Anytime a transmission or portal gear sits on a pin inserted through a shaft, the pin seat in gear is only rounded on one side of the gear. If u look closely on ALL transmission or portal gears the gear "SHOULD" only go on one way but it can be installed either way because it appears as if it doesn't matter which side the pin sit's on, that's why we're seeing/hearing random videos of clicking SCX10III Jeeps & SCX10II UMG10's with various degrees of clicking depending how many transmission or portal gears are sitting on pins incorrectly! The transmission or portal gear shaft pin seats are only rounded on one side of every gear that sits on a pin inserted through a shaft, if it's the wrong side it's like adding 2 or 3 shims & will create binding &/or make gears hit covers causing the clicking. Some have just been lucky cuz it's a 50/50 chance of getting each gear seated on their pins correctly! Axial should make this clear in the instructions, luckily I saw a few other videos before I built my SCX10III Jeep. Now I need to go tear apart my UMG10 transmission cuz I didn't know this when I built that & even following the "revision" & using proper revised gear case in the UMG10 manual, it still was clicking & felt bound up.
Exocaged said he installed his in the correct orientation and still had significant clicking. I believe I also watched an interview with one of the Axial designers admitting there was an incorrect tolerance on the transmission gears and that is the root cause of the clicking. And that putting the gear in backwards emphasised the issue.
@@AbyssCrisp because sometimes if you write less and the message is unclear you end up having to write more in order to answer follow up questions. It's like insurance. Pay a little more up front and protect yourself from having to pay a lot more later.
I love having the 2 speed in a trail truck. If I run into a spot where I need more wheel speed, 2nd gear is there...mud, hill climbs stuff like that. I just like having the option.
I love having a 2 speed on the trail. A really low crawl gear and then one near stock scx ratio is about perfect in my opinion. My fast walk is pretty quick, but my scx on 3s will make me jog lol.
As someone that owns a trx4, I love the two speed transmission. I don't use it a huge amount, but when I need it (ascending snowy/slick slopes, etc), it comes into its own. I also have a scx10, and find that i have been taking the trx4 out more often than i, frankly, expected to.
excellent job and thanks for the free info as I just ordered this gear set to install in my 10III as I build it the first time and yes a two speed trans geared correctly is a must, 1St gear should be dead slow and 2nd should be about walking speed, my full size 2020 JLU Rubicon has low gear to creep over obstacles and not to get to the mall faster! if we are going to play tiny trucks correctly it should have low low 1st gear and scale 2nd gear, those that run only one gear aren't playing scale tiny trucks correctly and should only be allowed to drive to the mall.
I like having the 2 speed. Our comps we have around here have sometimes have longer driving sections in between the technical sections due to our terrain. So the 2 speed helps with those few extra seconds on the time clock.
Hey bud searching for an option to help what I thought was the lowest way to go... swap to a 11tooth pinion. I did this and it is really loud at half to full throttle. I put a 17tooth in and it's all nice and quiet and smooth but to fast. Can I go back to 11tooth and change another gear to mesh better. Please help me out I don't like this thing to race I really only want to slow crawl. With 3slipo and a 1800kv fusion set up it's still faster than I want with with 11 tooth.( I keep the remote set at 75 percent.)
I have a 2 speed but I use it very infrequently, the only time high gear is ever used is combined with me saying “yeah, and it has a 2 speed transmission too”. Also, thank you for reaffirming my decision to not use the 2 speed option in this kit, when it finally gets here.
Thats how it works IRL... People forget is all about scale looks and feel, You dont drive all the time in 4x4 Low to get to a challenge.. You have unlocked diffs, 2WD and High Gear to get from point A to B.. I love using my TRX4 all unlocked and start to lock shit as I needed it, It adds to the realism.
Yep, go fast and open til you get stuck, then start hitting switches til you get unstuck! Lol. If you forget to open (diffs) you'll remember when you roll it!
I just Got the TRX4 with 2 speed and i love it. If your actually going on a hike/walk in the wood. There'll be times where there isn't anything to crawl on or over and the extra speed makes it a little more fun. Also just getting from one crawl spot to another even in your back yard its a great option to have. If im carrying it, its either broke or has a dead battery. Thanks for the vids Keep'em coming.
I like the 2 speed feature, but I wish the difference between Hi and Lo was bigger. As it is now, it's not worth the weight for competition use IMO. Love that spreadsheet.
So frickin cool bro, just built my test ramp yesterday for better accuracy on testing. Hopefully everything I’m learning about the SCX10 iii my build will go smoothly. I look at my box sitting on the shelf everyday thinking 🤔, is today gonna be the day. SOON! Thanks for the info
Just want to say thanks for all your in depth looks at all these trucks. You really get to the point and cover everything in way that keeps me iterested to the end . Your work is appreciated my friend.
I love my two speed on my scx10.3. One of my favorite crawl spot is a 30 min trail hike to get to and it helps a lot. But then again this is why we have options for our own needs.
I've just upgraded to a 2 speed in my trx4 sports. And its probably my favorite mod. Mixed with the crawlmaster sports 550 12t its got amazing crawl control. But in high gear its got plenty of wheel speed for mud, sand, ect or simply sending it on a mission from my camp site
I wish trax-ass would make different ratios for the 2 speed. I’d go with the stock 64:1 low and a 20:1 high. But I’m living in between running a 13t pinion.
Thats because there is an actual significant difference in those gears. The spread is much higher so using 2nd actually feels like a faster gear in the TRX4.
@@TheNamesArif I wouldn’t mind owning an Arrma, but I only have one HH product which is my CRAPra kit. Fully stock they suck, but with a flat skid, rear steer axle, rear link riser, quality BLDC setup, decent servos, a negative spring on the front, and a lot of tuning the thing is excellent 🤦🏻♂️. Now my TRX6 isn’t stock either, but really all it needed was body mods and a brushless system.
Hi, first of all thank you for the great content. I am completely new to the RC crawler world and your videos have been a great source of information and inspiration. In fact, i am in the process of building an SCX10.3 as my first truck. Second, i apologize for the length of this post. From my point of view, the 2 speed transmission makes perfect sense for this vehicle. I understand that for a hardcore crawler fan having, the latest and greatest in your truck is a no-brainer and that spending over 200$ on a high power brush-less system is not a problem. However, from my perspective its just too much. I have ordered a 20$ crawlmaster motor that should be butter smooth at low speed and provide an appropriate top speed for this truck in second gear. It seems to me that you are spending a lot of money for the fast brush-less system, spending more money to slow it down and ending up with the same speeds that an inexpensive brushed motor provides. Am i missing something? Is brush-less simply overkill for this type of rc? Finally, the two speed transmission is one of the elements that take this kit closer to a 1:1 vehicle and that is appealing to me.
Thanks for the comment, but yes, you are missing something. I'm gaining additional reduction, and therefore not taxing the motor but adding the gearing. It's not an expensive change, and well worth it in my opinion. Using your less expensive brushed system would still benefit from it. Brushless is NEVER overkill in my opinion.
Thanks for the reply. I did not consider that angle. I would love to see a comparison between a brushed and brushless system on the same crawler. Keep up the great content.
I've got two Ascenders, two Bombers, and a Twin Hammers. I love them all...but I really want to get this SCX10.3 and have a really low crawl gear with stock trail gear, whatever you want to call it. Impressive...
in the winter i find a 2sp transmission to be a really useful tool. but in the summer when i do a 14KM + hike it has its place. its like a sound system totally personal preference and theirs a time and a place for it.
I just bought the OG SCX10 1 Today. I love it. Im for 1 DISLIKE the new SCX10 series, i hate the portal axles. So much aftermarket for the OG SCX10. Im putting Vanquish products on it to the max. 2.2 tires, brushless, castle sidewinder ESC, spektrum 5 ch radio, 3s 2200 battery. Will be just used for trail runs, youtube videos, but no Competitions.
I like my two speed set up. I like doing long trails of between 3 and 6 km's (about 2 to 4 miles...) And I like to be able go a quickly across the flat spots and have the wheel speed for climbing the sandy banks. Even with brushless....
i removed the unlockable diffs and 2 speed in all my trx4's got 45:1 gearing in all of them with an underdrive gear in the rear and it's plenty fast with a 2700kv puller pro, way faster than it should be but it's nice
I think some of the 2 speed arguments need to also look at what type of trail are you running. If some big open area between optical is a nice to open things up
Agree on the two speed being redundant with the appropriate ratio/pinion, but my objection is for weight and complexity. I enjoy wheelspeed, because I want my tiny truck to act like a 1/1; driveable in a range of environments.
It isn’t really walking at a fast pace but playing with my little shih tzu. That is my attraction to a two speed. Other than that, first speed has all the wheel speed that I need.
I run a two speed, mostly to get a really low gear crawl and control, but can switch for more wheel speed if needed. I'll admit I seldom use the second gear but when I need it I have it.
I'm with you and Josh... Never felt the need for a 2 speed in a SCX10... Any of them. I would like to see how to lock it out, and just have Dig. I asked you for advice in your last Video... It's OK you didn't answer. That's an EPIC idea!! And even an easy upgrade. Just add the Gears in the build. 😉 IF by some miracle I win the SNU/Holmes contest... I'll probably get a SCX10 III. If not, I'm going in another Brushed direction. Please stay SAFE! 😷 Carmine ✈🚂🚙
Stock trucks with one speed goes plenty fast on 3s and I put an 18 tooth on a vaterra one time and it would fly but crawl suffered and motor was short lived
I have not builded mine yet , waiting for all the upgrades , tips . I thinking of just going with the 11 tooth pinion. 13 t or 16t Holmes hobbies crawlmaster sport. Do you think I can getaway with not putting in spacer for 2 speed , and try to hold it in place with zip tie or something? Definitely want dig . Ordered the 24% over drive from super shafty. Soooo many options. What do you think of my motor choice, ?? I do want to stay with brushed. I have hobbiewing 1080. Thanks for all the awesome videos. 😊
Thank you so much to the man who made the Gear Ratio Spreadsheet, Its helped so much in working out which pinion I'm going to use and weather or not the optional gears are for me. I'm not going to use the 2 speed, i have a Mamba X and a Slate motor to go in.
Matt. First issue that I have with my SCX10-III are the lengths of the shock springs. The kit comes with 13mm x 62mm long springs (green & red). With these, I have the front and rear adjustment collars all the way up on my rig; but, still want to lower the overall height of the III if that was possible. Researching shorter springs and/or lower spring perches. Second issue is that the right front wheels lifts too easily and unloads on steep climbs. Feel that the kit should have come with stiffer springs at the rear to help control that issue. Bottom line...I am hoping to find something like 13mm x 55mm springs with about a 2 lbs/inch rate. Or, will try other shock/spring assemblies. FYI...I am running the new Proline Jeep JL body (210 grams painted) for better performance than what the kit body allows (500 grams?). Fits pretty well.
If you want to shorten the overall length of the shocks, put some nitro fuel tubing under the piston, It will limit the travel and shorten the shock length. Easy fix.
@@scalebuildersguild Matt. A little too easy...LOL With internal spacers, I would still end up with no available adjustability of the springs via the shock collars. Thanks!
I've never used a 2 speed before. I have the scx10.2 kit but never hooked up the 2 speed. I never had a problem with its overall speed so i did not see the point it using it. But im very interested in the dig unit on the scx10.3. Waiting on mine to come in.
Awesome informational video. I have done this and it does amazing for crawling. Currently have a roc412 3100kv motor. Still plenty of wheel speed if i need it but the crawlability is so much better over stock. Also run a 12t pinion.
3s and I'm crawling plus I have the power to make all wheels dig in, I don't get the number ratio I would like to see a regular out the box crawler versus this two speed deal...
Something interesting to note, and you can see this born out in data logs, is that you’re not really getting any more torque at the wheel when you’re gearing down. The motor simply draws less amps lol. It’s easier for the motor and makes crawling smoother, but unless your driveline is bound down it will just rev high and do nothing.
I enjoy 2 speeds, as I have a orginal 10.1 with the rc4wd 2 speed, and under drive gears sets, so once I get my 10.3 I'll actually try that 98 to 1 reduction, with a holmes brushless system
Great video as I'll probably be using that chart,thanx. Me personally,I prefer 2 or even 3 speeds as if I need a little more acceleration and speed,I know its there. I gotta ask,where did you get your action of yourself? I'd love to get 1 for myself,thanx.
You mentioned that gear reduction from the portals is why the manual lists the 1:1... My question is: Do you intend to further reduce the gearing ratio AND keep the portals, or do you plan on switching to regular shafts when they are released? Thank you very much for your videos and insight!
I have the portals installed, so there's no way to get further reduction, at the highest, you can get 98:1 reduction. Once you lose the reduction at the portal, expect it to be closer to 60-ish FDR.
I feel that the problem with most 2-speeds is that the difference between 1st and 2nd gear is not great enough. The TRX-4 2-speed is better than most, but it could be better. If your 1st gear FDR is ~60:1 then make 2nd ~20:1.
You asked what hop ups I'd like to see. I'd really like to see a faster 2nd gear. Or some sort of 2 speed gearing options. Does anyone know if that's available? As some of the guys already said, these trucks are for driving, not carrying. I'd rather carry an extra battery than carry the truck!
Do you think 2 speed would be cool on a basher? Like you could have first gear for general bashing at 50mph and then 60 or 70 mph in second gear for shorter speed runs or places where you want more speed like if you want to hit a jump at 70mph.
Scale Builder's Guild yeah you’re right. Cool thought though. Hitting a jump at 70mph. I guess it is easy enough just to swap out the pinion gear for a bigger one on these arrma’s. Love your channel btw. Kinda what helped me in to the crawling side of things
now if u revesrse the way the small gear and large gear go on the trans will u get a much higher ratio? rc4wd does this in thier transfer case gearing if u flip the configuration u get a much different ratio.
Would you suggest those trans gears if I’m gonna use a 13t pinion with overdrive front ring and pinion with the Holmes hobbies crawlmaster pro 16t brushed motor in my scx3?
Hi Matt, I notice most of your rigs have a very clean wiring look with what appears to be a protective sleeve. What product is that? Thank you, and great stuff with the videos!
is there a way to change the gearing on the high gear side? i luv the low gear ratio but there isnt much range between high and low gearing, in the trx4 u know when ur in high or low gear. the spread is much wider. this truck i hardly know if i am in high or low gear
how much of a factor is your radio/esc when it comes to low speed control, compared to the mods mentioned here? ive primarily done trail running rigs thus far, and my low speed is a little vague/weak and then jumpy.
hello could you please inform me I have a scx10 III in rtr on which I would like to add the 2nd gear I add the moni servo what should i do with the gearbox as a modification thank you in advance good driving
What’s a good gear reduction for a stock RTR SCX 10 2 with a 4400 kv brushless I changed cause the stock motor burnt up...? Love the channel, great stuff man...
That is a LOT of motor for these trucks. I would consider getting a lower KV motor if you cannot get your speed to where you like it. I also have a sheet for the SCX10II as I own one of those as well. drive.google.com/file/d/1AJKqNaYa0rMnErDJQw89WmFJ0Nm68P_l/view?usp=sharing Put in your numbers for the gears, battery, Kv, and tire size. This way you can see what your top speed is now and how much you can slow it down with available gear changes.
this was a very helpful video. I have ordered my SCX10iii and should have it by May. With this being my first kit I going to do both the dig and 2 speed. But I have a feeling I will be ditching the 2 speed after a few runs since there is no need for the speed but wanted to see if it would work for the purpose of driving it to the location I am crawling at.. since I am lazy and do not want to carry it. The gear ration file is very helpful and thank you for sharing that. Is all this with it still being with the portal still in it and not a straight axle?
Yes the portal gear ratios are in the spread sheet. If in the future one decides to go with straight axles, (no portals) just adjust the numbers for the portal gears to 1 and 1 respectively. This will null out that calculation. This is the same as what I list as the "transfer case" gears at 27 and 27 respectively. This is 1:1 so the gear ratio for the spreadsheet does not change unless you update the "New Value" column with the new Transfer Case gear numbers. I hope that did not confuse things.
Most of the places I use a crawler have a lot of flat sections that it's nice to have a 2 speed for. I can flip a switch, blast through those to the more fun sections. They are mostly a straight shot, so unlocking diffs is pointless for me. I am not happy with the way the SCX10-3 2 speed is however. The ratios are so close that it seems pointless. The TRX4 is better in that respect, however I like the SCX10-3 more.
i have a question , does axial make a longer link set for the truck i want to do a custom gladiator build and the chasis needs to be longer i see i can extend the rails but i can't find aftermarket links .
I have purchased two different servos for my scx10 III but neither of them will fit/clear everything correctly. I even bought Horizon’s recommend Spektrum brushless servo & it doesn’t even fit, lol. Do you know of any servo’s that will fit without any modifications?
I can't help you as I don't know which ones will fit without modding. That said, one or two quick trims with a blade will make any servo fit just fine.
I just put 11t pinion yesterday haven’t crawled outside but it’s lot slower. I’m running AXE brushless. I’ll pick up those transfer gears as well. What’s the result if I only change pinion?
What is a good engine/transmission/transfercase combination that is waterproof and available for purchase without a whole chassis with axles and stuff? Like what is in this jeep, but without the the two speed. I want to make my own tube rc crawler and need something for a drivetrain.
@@scalebuildersguild thanks for the quick reply, I have seen one combo on there site, but arent there any more brands that make reduction/transfercase units?
Great work Matt. I have been playing around with the spreadsheet for my TRX4 sport, how would you calculate if using both over and under drive gears, and who was the guy on the RC Crawler forum if your unsure i can ask him?
Sadly no, well, no not really. I swapped out the skid and replaced with a traditional 3 gear from Vanquish. Added dig back and it crawls much better now.
@@scalebuildersguild that’s actually the direction I chose to go, but naturally the Vader flat skid is on back order. Any other ideas on the skid? Really appreciate you responding let alone in such a quick fashion….. much respect Matt, keep up the great work! Currently waiting on my vrd carbon kit so I’m sure I’ll have some more questions on my first kit build!
@@scalebuildersguild that’s actually the direction I chose to go, but naturally the Vader flat skid is on back order. Any other ideas on the skid? Really appreciate you responding let alone in such a quick fashion….. much respect Matt, keep up the great work! Currently waiting on my vrd carbon kit so I’m sure I’ll have some more questions on my first kit build!
I'm no expert that's for sure, but I'm still gonna give my opinion! I have the Capra, and the SCX10iii (also SCX10ii UMG & TRX4), both are using Hobbywing Axe 540 1800Kv systems (Castle is very expensive and hard to get in UK at the moment), on 3s with stock pinions, both are good at crawling, and seem to have loads of power down low, and good wheel speed. Rather than using a high Kv motor (2850Kv) and gearing down why not use a lower Kv motor (1900Kv)? Anyway the two speed on the SCX10iii does seem a little pointless, and at low speed its hard to tell which gear you are in as they are very close, perhaps they could have made the lower gear a little lower and the high gear a little higher. What I would really like is for one of the manufacturers to make quieter or silent transmissions, I guess it would involve helical gears which would be expensive and complicated to make and implement. My UMG10 is too loud!
The idea here is to add reduction, not just less KV. I keep all the torque, and in fact, actually increase it be reducing the gearing. Just putting a slower motor in won't garner the same results.
Thanks for the explanation, perhaps you could make a head to head video, to show the results of high Kv with low gearing Vs Lower Kv with higher gearing, would love to see the results, anyway I enjoy watching your videos, thanks and stay safe!
I am with you on having 2 speeds but you got your SCX10 lll to go so slowly. Love it. But what would you get if you put the other gears in it from the kit? The ones for the old style axles?
The two speed in a crawler has never really interested me, I locked out the three speed in my Tamyia semi as third is way too fast, unless I wanted to drag race it. A little faster than a normal walking pace is fast enough.
And kudos to Suicide Shift for his gearing spreadsheet. Being able to review the formulas used within it helps with understanding gearing. Will be using it to create a workbook of spreadsheets for my other crawlers. Yes, I am a spreadsheet nerd! LOL
To be honest I don’t really think 2 speed transmission is that useful because most of the time I’m going to be crawling over rocks and going quite slow. If you want to go fast get a slash or a UDR or something geared higher.
Great info, thanks Matt👍 I installed the two speed but really won't engage it unless I'm running with my son and his TRX4. He feels the need for speed🤣😂
Anytime a transmission or portal gear sits on a pin inserted through a shaft, the pin seat in gear is only rounded on one side of the gear. If u look closely on ALL transmission or portal gears the gear "SHOULD" only go on one way but it can be installed either way because it appears as if it doesn't matter which side the pin sit's on, that's why we're seeing/hearing random videos of clicking SCX10III Jeeps & SCX10II UMG10's with various degrees of clicking depending how many transmission or portal gears are sitting on pins incorrectly!
The transmission or portal gear shaft pin seats are only rounded on one side of every gear that sits on a pin inserted through a shaft, if it's the wrong side it's like adding 2 or 3 shims & will create binding &/or make gears hit covers causing the clicking. Some have just been lucky cuz it's a 50/50 chance of getting each gear seated on their pins correctly!
Axial should make this clear in the instructions, luckily I saw a few other videos before I built my SCX10III Jeep. Now I need to go tear apart my UMG10 transmission cuz I didn't know this when I built that & even following the "revision" & using proper revised gear case in the UMG10 manual, it still was clicking & felt bound up.
Exocaged said he installed his in the correct orientation and still had significant clicking. I believe I also watched an interview with one of the Axial designers admitting there was an incorrect tolerance on the transmission gears and that is the root cause of the clicking. And that putting the gear in backwards emphasised the issue.
nhlzr1z28camaro Thanks for the tip. Now I need to disassemble all to ensure I did them correctly...
Why do people like to write so much
_.dark_heart56._ Rc crawlers K
@@AbyssCrisp because sometimes if you write less and the message is unclear you end up having to write more in order to answer follow up questions. It's like insurance. Pay a little more up front and protect yourself from having to pay a lot more later.
I love having the 2 speed in a trail truck. If I run into a spot where I need more wheel speed, 2nd gear is there...mud, hill climbs stuff like that. I just like having the option.
I love having a 2 speed on the trail. A really low crawl gear and then one near stock scx ratio is about perfect in my opinion. My fast walk is pretty quick, but my scx on 3s will make me jog lol.
As someone that owns a trx4, I love the two speed transmission. I don't use it a huge amount, but when I need it (ascending snowy/slick slopes, etc), it comes into its own.
I also have a scx10, and find that i have been taking the trx4 out more often than i, frankly, expected to.
I like having 2 speeds. Climbing loose dirt and sand is fun.
excellent job and thanks for the free info as I just ordered this gear set to install in my 10III as I build it the first time and yes a two speed trans geared correctly is a must, 1St gear should be dead slow and 2nd should be about walking speed, my full size 2020 JLU Rubicon has low gear to creep over obstacles and not to get to the mall faster! if we are going to play tiny trucks correctly it should have low low 1st gear and scale 2nd gear, those that run only one gear aren't playing scale tiny trucks correctly and should only be allowed to drive to the mall.
I like having the 2 speed. Our comps we have around here have sometimes have longer driving sections in between the technical sections due to our terrain. So the 2 speed helps with those few extra seconds on the time clock.
Yes. I like my Trx4 two-speed gearing and i only carrying it when battery is dead. Driving every where is kinda the main purpose of a trail truck?
Or when your mamba x bricks trying to adjust the drag brake. :(
You hit the nail on the head! These trucks are for driving not carrying!
Thank you for the info on the spread sheet and the gear part numbers. Been holding on my build until I have all the pieces needed for my set up.
Hey bud searching for an option to help what I thought was the lowest way to go... swap to a 11tooth pinion. I did this and it is really loud at half to full throttle. I put a 17tooth in and it's all nice and quiet and smooth but to fast. Can I go back to 11tooth and change another gear to mesh better. Please help me out I don't like this thing to race I really only want to slow crawl. With 3slipo and a 1800kv fusion set up it's still faster than I want with with 11 tooth.( I keep the remote set at 75 percent.)
I have a 2 speed but I use it very infrequently, the only time high gear is ever used is combined with me saying “yeah, and it has a 2 speed transmission too”. Also, thank you for reaffirming my decision to not use the 2 speed option in this kit, when it finally gets here.
Well said!
Love my 2 speed keep it in high until you need low.
Only lock the diffs if your stuck or struggling
Same way I do it! High and open, mostly til I need an adjustment
Thats how it works IRL... People forget is all about scale looks and feel, You dont drive all the time in 4x4 Low to get to a challenge.. You have unlocked diffs, 2WD and High Gear to get from point A to B.. I love using my TRX4 all unlocked and start to lock shit as I needed it, It adds to the realism.
Yep, go fast and open til you get stuck, then start hitting switches til you get unstuck! Lol. If you forget to open (diffs) you'll remember when you roll it!
I just Got the TRX4 with 2 speed and i love it. If your actually going on a hike/walk in the wood. There'll be times where there isn't anything to crawl on or over and the extra speed makes it a little more fun. Also just getting from one crawl spot to another even in your back yard its a great option to have. If im carrying it, its either broke or has a dead battery. Thanks for the vids Keep'em coming.
I can't stop starring at that chevy now, I love it so much!
I like the 2 speed feature, but I wish the difference between Hi and Lo was bigger. As it is now, it's not worth the weight for competition use IMO. Love that spreadsheet.
So frickin cool bro, just built my test ramp yesterday for better accuracy on testing. Hopefully everything I’m learning about the SCX10 iii my build will go smoothly. I look at my box sitting on the shelf everyday thinking 🤔, is today gonna be the day. SOON! Thanks for the info
You can do it!
Just want to say thanks for all your in depth looks at all these trucks. You really get to the point and cover everything in way that keeps me iterested to the end . Your work is appreciated my friend.
I love my two speed on my scx10.3. One of my favorite crawl spot is a 30 min trail hike to get to and it helps a lot.
But then again this is why we have options for our own needs.
Agreed!
Where do you buy the gears that go inside the transmission, the different size ones ? 🙏
Links are in the description!
I see it now. didn't Scroll down thank you 🙏
I've just upgraded to a 2 speed in my trx4 sports. And its probably my favorite mod. Mixed with the crawlmaster sports 550 12t its got amazing crawl control. But in high gear its got plenty of wheel speed for mud, sand, ect or simply sending it on a mission from my camp site
I wish trax-ass would make different ratios for the 2 speed. I’d go with the stock 64:1 low and a 20:1 high. But I’m living in between running a 13t pinion.
Thats because there is an actual significant difference in those gears. The spread is much higher so using 2nd actually feels like a faster gear in the TRX4.
@@KTMcaptain arrma fan? xD lol jk it's funny
@@TheNamesArif I wouldn’t mind owning an Arrma, but I only have one HH product which is my CRAPra kit. Fully stock they suck, but with a flat skid, rear steer axle, rear link riser, quality BLDC setup, decent servos, a negative spring on the front, and a lot of tuning the thing is excellent 🤦🏻♂️. Now my TRX6 isn’t stock either, but really all it needed was body mods and a brushless system.
Hi, first of all thank you for the great content. I am completely new to the RC crawler world and your videos have been a great source of information and inspiration. In fact, i am in the process of building an SCX10.3 as my first truck. Second, i apologize for the length of this post. From my point of view, the 2 speed transmission makes perfect sense for this vehicle. I understand that for a hardcore crawler fan having, the latest and greatest in your truck is a no-brainer and that spending over 200$ on a high power brush-less system is not a problem. However, from my perspective its just too much. I have ordered a 20$ crawlmaster motor that should be butter smooth at low speed and provide an appropriate top speed for this truck in second gear. It seems to me that you are spending a lot of money for the fast brush-less system, spending more money to slow it down and ending up with the same speeds that an inexpensive brushed motor provides. Am i missing something? Is brush-less simply overkill for this type of rc? Finally, the two speed transmission is one of the elements that take this kit closer to a 1:1 vehicle and that is appealing to me.
Thanks for the comment, but yes, you are missing something. I'm gaining additional reduction, and therefore not taxing the motor but adding the gearing. It's not an expensive change, and well worth it in my opinion. Using your less expensive brushed system would still benefit from it. Brushless is NEVER overkill in my opinion.
Thanks for the reply. I did not consider that angle. I would love to see a comparison between a brushed and brushless system on the same crawler. Keep up the great content.
I've got two Ascenders, two Bombers, and a Twin Hammers. I love them all...but I really want to get this SCX10.3 and have a really low crawl gear with stock trail gear, whatever you want to call it. Impressive...
in the winter i find a 2sp transmission to be a really useful tool. but in the summer when i do a 14KM + hike it has its place. its like a sound system totally personal preference and theirs a time and a place for it.
I just bought the OG SCX10 1 Today. I love it. Im for 1 DISLIKE the new SCX10 series, i hate the portal axles. So much aftermarket for the OG SCX10. Im putting Vanquish products on it to the max. 2.2 tires, brushless, castle sidewinder ESC, spektrum 5 ch radio, 3s 2200 battery. Will be just used for trail runs, youtube videos, but no Competitions.
I like my two speed set up. I like doing long trails of between 3 and 6 km's (about 2 to 4 miles...) And I like to be able go a quickly across the flat spots and have the wheel speed for climbing the sandy banks. Even with brushless....
i removed the unlockable diffs and 2 speed in all my trx4's got 45:1 gearing in all of them with an underdrive gear in the rear and it's plenty fast with a 2700kv puller pro, way faster than it should be but it's nice
I just ordered mine Friday can't wait for it to get here. love your videos on it thank you.
Hope you enjoy it!
Where did u guys order for scx10 .3?
I think some of the 2 speed arguments need to also look at what type of trail are you running. If some big open area between optical is a nice to open things up
I tend to run the smallest pinion gear in my trucks. No reason to go faster than a casual walking pace.
*for me.
Agree on the two speed being redundant with the appropriate ratio/pinion, but my objection is for weight and complexity.
I enjoy wheelspeed, because I want my tiny truck to act like a 1/1; driveable in a range of environments.
I want to get a new body painted up nice for my crawler. Any suggestions to where i could send one to be done?
Harley used soots for his check it out on face book
It isn’t really walking at a fast pace but playing with my little shih tzu. That is my attraction to a two speed. Other than that, first speed has all the wheel speed that I need.
I run a two speed, mostly to get a really low gear crawl and control, but can switch for more wheel speed if needed. I'll admit I seldom use the second gear but when I need it I have it.
Thanks for sharing!
I dig your vids, I would like to see a video about dig n second gear for a real rc rockcrawler fan and having fun outside! Thanks
I cover that in the initial review video! And demo it!
23% OD 12t pinion, 2700PP stubby mine creeps. Can’t imagine a two speed, mines locked out.
I'm with you and Josh... Never felt the need for a 2 speed in a SCX10... Any of them.
I would like to see how to lock it out, and just have Dig.
I asked you for advice in your last Video... It's OK you didn't answer.
That's an EPIC idea!! And even an easy upgrade. Just add the Gears in the build. 😉
IF by some miracle I win the SNU/Holmes contest... I'll probably get a SCX10 III. If not, I'm going in another Brushed direction.
Please stay SAFE! 😷
Carmine ✈🚂🚙
On the next III build I do, I'll be sure to detail the 2 speed delete. It's really, really easy.
Stock trucks with one speed goes plenty fast on 3s and I put an 18 tooth on a vaterra one time and it would fly but crawl suffered and motor was short lived
I have not builded mine yet , waiting for all the upgrades , tips . I thinking of just going with the 11 tooth pinion. 13 t or 16t Holmes hobbies crawlmaster sport. Do you think I can getaway with not putting in spacer for 2 speed , and try to hold it in place with zip tie or something? Definitely want dig . Ordered the 24% over drive from super shafty. Soooo many options. What do you think of my motor choice, ?? I do want to stay with brushed. I have hobbiewing 1080. Thanks for all the awesome videos. 😊
I really enjoy having a 2 speed in my rr10 bomber. Granted that’s a rock racer but I like it.
Little different application, no?
Thank you so much to the man who made the Gear Ratio Spreadsheet, Its helped so much in working out which pinion I'm going to use and weather or not the optional gears are for me. I'm not going to use the 2 speed, i have a Mamba X and a Slate motor to go in.
Matt. First issue that I have with my SCX10-III are the lengths of the shock springs. The kit comes with 13mm x 62mm long springs (green & red). With these, I have the front and rear adjustment collars all the way up on my rig; but, still want to lower the overall height of the III if that was possible. Researching shorter springs and/or lower spring perches.
Second issue is that the right front wheels lifts too easily and unloads on steep climbs. Feel that the kit should have come with stiffer springs at the rear to help control that issue.
Bottom line...I am hoping to find something like 13mm x 55mm springs with about a 2 lbs/inch rate. Or, will try other shock/spring assemblies.
FYI...I am running the new Proline Jeep JL body (210 grams painted) for better performance than what the kit body allows (500 grams?). Fits pretty well.
If you want to shorten the overall length of the shocks, put some nitro fuel tubing under the piston, It will limit the travel and shorten the shock length. Easy fix.
@@scalebuildersguild Matt. A little too easy...LOL With internal spacers, I would still end up with no available adjustability of the springs via the shock collars. Thanks!
I've never used a 2 speed before. I have the scx10.2 kit but never hooked up the 2 speed. I never had a problem with its overall speed so i did not see the point it using it. But im very interested in the dig unit on the scx10.3. Waiting on mine to come in.
Awesome informational video. I have done this and it does amazing for crawling. Currently have a roc412 3100kv motor. Still plenty of wheel speed if i need it but the crawlability is so much better over stock. Also run a 12t pinion.
3s and I'm crawling plus I have the power to make all wheels dig in, I don't get the number ratio I would like to see a regular out the box crawler versus this two speed deal...
Something interesting to note, and you can see this born out in data logs, is that you’re not really getting any more torque at the wheel when you’re gearing down. The motor simply draws less amps lol. It’s easier for the motor and makes crawling smoother, but unless your driveline is bound down it will just rev high and do nothing.
That’s very interesting! That’s the kind of data I’m very interested in seeing.
Thanks for this post. Not a fan of the 2 speed for what I do. More interested in getting the crawling performance up.
I enjoy 2 speeds, as I have a orginal 10.1 with the rc4wd 2 speed, and under drive gears sets, so once I get my 10.3 I'll actually try that 98 to 1 reduction, with a holmes brushless system
I just ordered the gears and will be adding a 11T pinion
Great video as I'll probably be using that chart,thanx. Me personally,I prefer 2 or even 3 speeds as if I need a little more acceleration and speed,I know its there. I gotta ask,where did you get your action of yourself? I'd love to get 1 for myself,thanx.
A friend made it for me many years ago. Thanks for watching!
Was just curious as to why u don't keep your rc's on blocks/jacks? Do u have flat spot issues with your tires? Love the videos.. ty
I rotate them daily.
Awesome in depth info like always, thanks for sharing! Cheers crawling friends-
Our pleasure!
11T spur result is 98:1? Then that's what I want since my 1:1 scale jeep has that - or close to it
You mentioned that gear reduction from the portals is why the manual lists the 1:1... My question is: Do you intend to further reduce the gearing ratio AND keep the portals, or do you plan on switching to regular shafts when they are released? Thank you very much for your videos and insight!
I have the portals installed, so there's no way to get further reduction, at the highest, you can get 98:1 reduction. Once you lose the reduction at the portal, expect it to be closer to 60-ish FDR.
This is the obvious first mod to do to the 10iii in my opinion. 👍
I feel that the problem with most 2-speeds is that the difference between 1st and 2nd gear is not great enough. The TRX-4 2-speed is better than most, but it could be better. If your 1st gear FDR is ~60:1 then make 2nd ~20:1.
I built mine with a 12t pinion and a 1800kv hw axe. Haven’t tried it yet but hoping it’s really controllable
You asked what hop ups I'd like to see. I'd really like to see a faster 2nd gear. Or some sort of 2 speed gearing options. Does anyone know if that's available?
As some of the guys already said, these trucks are for driving, not carrying. I'd rather carry an extra battery than carry the truck!
I'm interested in seeing, if running straight axles will tuck the axle up into the chassis enough to make 4.19s look good.
Can't help you there, yet.
This is a great "yet."
Do you think 2 speed would be cool on a basher? Like you could have first gear for general bashing at 50mph and then 60 or 70 mph in second gear for shorter speed runs or places where you want more speed like if you want to hit a jump at 70mph.
No, too many moving parts for a basher. Keep it simple.
Scale Builder's Guild yeah you’re right. Cool thought though. Hitting a jump at 70mph. I guess it is easy enough just to swap out the pinion gear for a bigger one on these arrma’s. Love your channel btw. Kinda what helped me in to the crawling side of things
SCX10III's athletic ability is great! 7:02
now if u revesrse the way the small gear and large gear go on the trans will u get a much higher ratio? rc4wd does this in thier transfer case gearing if u flip the configuration u get a much different ratio.
Nope, you're stuck with what exists and can't switch. Thanks for watching!
Would you suggest those trans gears if I’m gonna use a 13t pinion with overdrive front ring and pinion with the Holmes hobbies crawlmaster pro 16t brushed motor in my scx3?
I leave that up to you. This is if you want to get a ton of reduction and ultra low speeds.
For my $450 budget, What crawler should I get?
Not really up to me to answer without a lot more info. The best truck is the one that puts a smile on your face.
No two speed for me. I use either the RC4WD or more often the GCM Racing scale drivelines.
Hi Matt, I notice most of your rigs have a very clean wiring look with what appears to be a protective sleeve. What product is that? Thank you, and great stuff with the videos!
AlexTech wire shroud. Get it on Amazon.
@@scalebuildersguild Thank you, Matt. Much appreciated!
is there a way to change the gearing on the high gear side? i luv the low gear ratio but there isnt much range between high and low gearing, in the trx4 u know when ur in high or low gear. the spread is much wider. this truck i hardly know if i am in high or low gear
Nope, you’re stuck with what it offers.
how much of a factor is your radio/esc when it comes to low speed control, compared to the mods mentioned here? ive primarily done trail running rigs thus far, and my low speed is a little vague/weak and then jumpy.
Gearing will have a much greater impact than radio settings or ESC, but they can definitely help.
hello could you please inform me I have a scx10 III in rtr on which I would like to add the 2nd gear I add the moni servo what should i do with the gearbox as a modification thank you in advance good driving
The instructions that toy can download show you exactly what you need to do. Available at axialracing.com
So when’s the skid plate for a 3 gear gonna show up? I sat in wonder, listened to the sound of heavy thunder.
I'll never go back to that style of trans again. Far more options here.
Ehh. Too many bells and whistles. More parts=more to break.
What’s a good gear reduction for a stock RTR SCX 10 2 with a 4400 kv brushless I changed cause the stock motor burnt up...? Love the channel, great stuff man...
I'd start by reducing the pinion size and increasing the spur.
That is a LOT of motor for these trucks. I would consider getting a lower KV motor if you cannot get your speed to where you like it. I also have a sheet for the SCX10II as I own one of those as well. drive.google.com/file/d/1AJKqNaYa0rMnErDJQw89WmFJ0Nm68P_l/view?usp=sharing
Put in your numbers for the gears, battery, Kv, and tire size. This way you can see what your top speed is now and how much you can slow it down with available gear changes.
If I change pinion on motor to 11 tooth with a hh16 turn would work better then stock?
It’s important to experiment and see what works best for you.
this was a very helpful video. I have ordered my SCX10iii and should have it by May. With this being my first kit I going to do both the dig and 2 speed. But I have a feeling I will be ditching the 2 speed after a few runs since there is no need for the speed but wanted to see if it would work for the purpose of driving it to the location I am crawling at.. since I am lazy and do not want to carry it. The gear ration file is very helpful and thank you for sharing that. Is all this with it still being with the portal still in it and not a straight axle?
These ratios will work for portals or straight axles, whenever they come out. But yes, the calculations I'm showing still have the portals.
Yes the portal gear ratios are in the spread sheet. If in the future one decides to go with straight axles, (no portals) just adjust the numbers for the portal gears to 1 and 1 respectively. This will null out that calculation. This is the same as what I list as the "transfer case" gears at 27 and 27 respectively. This is 1:1 so the gear ratio for the spreadsheet does not change unless you update the "New Value" column with the new Transfer Case gear numbers. I hope that did not confuse things.
Most of the places I use a crawler have a lot of flat sections that it's nice to have a 2 speed for. I can flip a switch, blast through those to the more fun sections. They are mostly a straight shot, so unlocking diffs is pointless for me. I am not happy with the way the SCX10-3 2 speed is however. The ratios are so close that it seems pointless. The TRX4 is better in that respect, however I like the SCX10-3 more.
i have a question , does axial make a longer link set for the truck i want to do a custom gladiator build and the chasis needs to be longer i see i can extend the rails but i can't find aftermarket links .
You can make your own links. Threaded rod and rod ends!
@@scalebuildersguild ok thanks
excellent information as usual..... love the truck, just a pity we cant get them over here in the UK yet.
Sorry to hear that, I thought some arrived there first.
@@scalebuildersguild yeah but unless you had a preorder in or a youtube guru..... well you know the rest ... lol
I have purchased two different servos for my scx10 III but neither of them will fit/clear everything correctly. I even bought Horizon’s recommend Spektrum brushless servo & it doesn’t even fit, lol. Do you know of any servo’s that will fit without any modifications?
My jx46kg went right in with no modification needed
I can't help you as I don't know which ones will fit without modding. That said, one or two quick trims with a blade will make any servo fit just fine.
I just put 11t pinion yesterday haven’t crawled outside but it’s lot slower. I’m running AXE brushless. I’ll pick up those transfer gears as well. What’s the result if I only change pinion?
Download the spreadsheet and figure it out, super easy.
Scale Builder's Guild will do! I see it’s shared awesome. Thanks!! Great content as usual.
I would like to lower the ride height some more. Do you have any suggestions?
Shorter shocks? Droop?
Hi ,Great vid love watch you do stuff on RC trucks.did you use the 13t 48pitch or 32p ? The manual has a 48pitch AX30569
ONLY 32P, that’s a mistake in the manual.
What is a good engine/transmission/transfercase combination that is waterproof and available for purchase without a whole chassis with axles and stuff? Like what is in this jeep, but without the the two speed. I want to make my own tube rc crawler and need something for a drivetrain.
Check out what GCM Racing has to offer.
@@scalebuildersguild thanks for the quick reply, I have seen one combo on there site, but arent there any more brands that make reduction/transfercase units?
That’s the one I’d recommend.
Great work Matt. I have been playing around with the spreadsheet for my TRX4 sport, how would you calculate if using both over and under drive gears, and who was the guy on the RC Crawler forum if your unsure i can ask him?
Suicide shift.
@@scalebuildersguild - Thanks
@@scalebuildersguild Ps for anyone looking for him the "S" is a $ - $uicide $hift. FYI Matt he was thrilled to be mentioned on your site
Great video and the new t'shirt design is super
I'm glad you like it!
Can u do something like this to the Capra and is there a kit? Thanks matt
Sadly no, well, no not really. I swapped out the skid and replaced with a traditional 3 gear from Vanquish. Added dig back and it crawls much better now.
@@scalebuildersguild that’s actually the direction I chose to go, but naturally the Vader flat skid is on back order. Any other ideas on the skid? Really appreciate you responding let alone in such a quick fashion….. much respect Matt, keep up the great work! Currently waiting on my vrd carbon kit so I’m sure I’ll have some more questions on my first kit build!
@@scalebuildersguild that’s actually the direction I chose to go, but naturally the Vader flat skid is on back order. Any other ideas on the skid? Really appreciate you responding let alone in such a quick fashion….. much respect Matt, keep up the great work! Currently waiting on my vrd carbon kit so I’m sure I’ll have some more questions on my first kit build!
Mine not moving at all after installing the spacer for the shifter n dig..im running full time 4wd..suppose to be moving free right?
Sounds like you’ve done something wrong. I’d tear down and start again.
Done check n all pins in correct position..will restrt build back the complicated(hahah) gearbox again for the 2nd time..
Magnet mounts qualify as an upgrade?
Do some chassis upgrades!!!! Please🤘🏼
I'm no expert that's for sure, but I'm still gonna give my opinion! I have the Capra, and the SCX10iii (also SCX10ii UMG & TRX4), both are using Hobbywing Axe 540 1800Kv systems (Castle is very expensive and hard to get in UK at the moment), on 3s with stock pinions, both are good at crawling, and seem to have loads of power down low, and good wheel speed. Rather than using a high Kv motor (2850Kv) and gearing down why not use a lower Kv motor (1900Kv)?
Anyway the two speed on the SCX10iii does seem a little pointless, and at low speed its hard to tell which gear you are in as they are very close, perhaps they could have made the lower gear a little lower and the high gear a little higher.
What I would really like is for one of the manufacturers to make quieter or silent transmissions, I guess it would involve helical gears which would be expensive and complicated to make and implement. My UMG10 is too loud!
The idea here is to add reduction, not just less KV. I keep all the torque, and in fact, actually increase it be reducing the gearing. Just putting a slower motor in won't garner the same results.
Thanks for the explanation, perhaps you could make a head to head video, to show the results of high Kv with low gearing Vs Lower Kv with higher gearing, would love to see the results, anyway I enjoy watching your videos, thanks and stay safe!
What is your preferred final drive ratio if going single speed only?
That depends entirely on you and your driving preferences. I'll probably play with this 80-ish to 1 for now.
I've got a 3300kv axe in mine have yet to test it but I'm going to put the 11 tooth in there first
I am with you on having 2 speeds but you got your SCX10 lll to go so slowly. Love it. But what would you get if you put the other gears in it from the kit? The ones for the old style axles?
Old style? You can only put the gears made for this truck in.
@@scalebuildersguild D44 not portals
I run a 55t in my scx10.2, speed is not something I worry about when crawling.
So, is this the gearing that comes with the straight axle conversion?
Yes and no. On the trans side yes, but when you add the portals, you get double the reduction.
id like to see a gear ratio calculator standard with the build instructions..........
The two speed in a crawler has never really interested me, I locked out the three speed in my Tamyia semi as third is way too fast, unless I wanted to drag race it. A little faster than a normal walking pace is fast enough.
And kudos to Suicide Shift for his gearing spreadsheet. Being able to review the formulas used within it helps with understanding gearing. Will be using it to create a workbook of spreadsheets for my other crawlers. Yes, I am a spreadsheet nerd! LOL
To be honest I don’t really think 2 speed transmission is that useful because most of the time I’m going to be crawling over rocks and going quite slow. If you want to go fast get a slash or a UDR or something geared higher.
If I'm out hiking/trailing. High gear works great for walking speed. Low gear seems to fall behind.
What are your favorite 1.9 tires to run?
I've got too many to mention. There isn't one tire that doesn't it all.
Great info, thanks Matt👍 I installed the two speed but really won't engage it unless I'm running with my son and his TRX4. He feels the need for speed🤣😂
I love the idea of a two speed due to brushless systems are expensive and I always have brushed motors in my collection
Spreadsheet is trick. Nice video.
Yes! Thank you!