No Prep RC Drag Car Gearing Test! | How to Select RC Drag Car Gearing
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- เผยแพร่เมื่อ 29 พ.ค. 2021
- After finally getting my RC No Prep car launching straight and making consistent passes, its obviously time to start trying to go faster! Adding boost and turbo in the Tekin RS Pro ESC is one way of getting faster, but I have a lot of turbo and boost in the car already and want to try a few other things. One of those things is gearing. Gearing changes are an easy way to pick up some speed but you also have to watch out for temperature changes with gearing changes.
Today, I'm testing some different pinion gears on my car. Starting with the 20 tooth pinion that I normally run and the 81 tooth spur gear, I want to work my way up and see what kind of speeds I can get with a larger pinion. To test this, I'm not changing anything else. Leaving everything in the radio, in the esc, and the motor itself the same. I'm pretty happy with the results and what I learned and I hope you learned some stuff as well!
Hope you Enjoy the Video!!
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Information about gearing is always helpful. The new body looks good
Thank you so much!
Great video. That new body is 🔥 bro. Really appreciate your transparency and how much good info you always share. Thanks
Thank You! I'm getting some comments on other things to try so I'll be back out soon trying some more things.
@@FullThrottleRC nice looking forward to them
Very cool body! Enjoyed watching all the different gearing setups 👍🍻
Thanks! I've been interested in seeing what some different gears would do to the car.
Great vid.
Thanks!!
Thanks and I just subbed
Thank You!
thanks for the great videos.. Q? do you change up your spur gears and if so what size? thanks keep up the great videos. appreciate you.
Spur gears are a little harder to change and find fine tuning sizes for so I don't change as often. I have a 76, 84, and 87 tooth Spur though and have been running the 87 lately. Thanks!
Great video. I like the new body But one thing you gotta know if u didn't already know is that the GNSS is two sec off
Two seconds?? I've heard about two tenths from a lot of people which means my car is even faster than I thought but it still gives me a good idea of what kind of progress I'm making
Thank you for your video. I am just getting into the rc drag racing. What pitch are you running 48 or 32?
This car runs a 48p gear
Great build, appreciate the video. Excellent body. Thanks. What wheelie bar are you running?
Thank you! The wheelie bar is custom made, I have a video on it on my channel if you're interested
Nice vid and shell, what turn motor are you using,,,I'm working with a 10.5
Thanks! I run a Trinity Drag Master 3.5t
@@FullThrottleRC oh ok Im using 78/31 with my 10.5 motor and staying consistent at 2.8 trying to break into the 2.7's now
Enjoy this type of content
Thank You!!
I'm running pretty much the same chassis setup. Last weekend I was running 3.0s. Tonight did some more testing and my best time was 2.774 @ 49.16. Hoping to get in the 2.5 next weekend. I've learned a lot from your videos. Thank you.
Thank You!! Good Luck
Gregory Frost what turn motor are you running?
@@radsierra2138 I was running a tekin 3.5t with a tekin rx8 gen2 esc. Best I ran was 2.54 at 53mph. I have turned this car to a 13.5t car. And built a new car with a extreme racing chassis with a 2.5t and a castle creations mamba x 1/8 esc. Haven't ran it yet.
Good stuff bro like the new Camaro body 💪
Thank you!
Who’s rear wing is that? Great video!
All of my wings come from Undercover RC Drag wings. Thank You!
🔥
Thanks
I use a copperhead 10 7700 KV motor sensored for a 25 tooth pinion and a 75 tooth spur Castle
What time and speed?
as a very new guy coming in to this hobby, which car or body should I start with?
I eventually want to compete! but don’t have much knowledge nor have much experience in RC game!
The associated dr10 and the losi 22s drag car are two great starter cars. Lots of aftermarket support and you can upgrade from there!
Crazy...i run a 31t pinion with a 83 spur on my vxl3s slash and i do about 5 passes before it warms up.it seems to take it well.
Wow! That's higher than I have ever gone on this car. I've started gearing more conservative and letting the RPMs wind up more on the top end.
@@FullThrottleRC i know when i herd 27t i was like huh.and im running a 31 am i wrng...lol or ill go 31/76
It all depends if your running 2 pole or 4 pole ,stock slash is 4 pole so your it's normal to be in that gearing your fdr should be around 7.5 but for 2 pole it's the opposite you want a Big Spur and small pinion there High Rev motors ,fdr should be 13.5sh or so
I’ve been thinking about getting a traxxas vtec 2.0 as a drag build. Whattaya think? I know it prob isn’t in rules but I’m looking at just parking lot runs
Could make a cool scale car. Like you said, doesn't really fit the No Prep rules but I'm sure you could find a class to put it in
I have one that I use for drag racing, it's the first of it's kind and fast. I did some modifications to it. You have to see it to believe it. Killah Bee 2.0 is its name.
@@godsson273 right on.. I could see it being pretty fast from what I’ve seen and it’s a “run what you brung” class in my neck of the woods.
Servo brand?
I don't understand how that yes she is getting hot after one run I beat the crap out of 6s typhon drag running 40/31 boiling tires drifting drag hits etc and it takes about 10 minutes for it to get really hot
They make fans you can put on the motor
Hi make a Video how you make this rear Wing thx
The wings I use on my cars are from undercover rc drag wings
Starting off with 19/76. Vxl. Any input ???
I don't have much experience with the vxl system. See what your temps look like though and how the car reacts with that gearing
What transmission are you running? Stock or something else??
I'm running the 3 gear transmission
@@FullThrottleRC is that a Traxxas transmission? Or an aftermarket my apologies if I should know lol
@@joshschaeffer6495 No, this car is built from an Associated SC5M so its an Associated transmission.
👍👍
Thank you
So how did you do this on keeping your motor from getting hot
I was making one or two passes and then the car would sit for a while when I changed gears so that allowed the car to cool a bit.
@@FullThrottleRC I have the new bandit rtr with the led lights and I’m working on turning it into a drag car, I’m keeping everything the sam the chassis and the body. I have the traxxas esc and motor in it,
So when go and run it the motor gets hot I have a 13 pinon and a 58tooth spur gear, I was trying to go up and the spur gear to a 62t spur gear so what do I need to do that get it to come off the line real fast
I can only get my car to go 45 mph ..91t spur gear 25t pinion 45amp esc 3300kv 3s??!what do I need to do to get it faster
I'd personally say probably a more powerful ESC. A 45amp ESC is kind of small for drag racing. Then you can look at other motor options if you wanted as well.
@@FullThrottleRC ok so if I get a bigger esc like my spectrum 150 what size motor to run it on a 1/10 Arrma granite voltage 2wd?? Go up on kv or lower
@@devinw9698 to get higher speeds you'd want a higher kv motor, lower kv for more torque
Hmmm 19/84 or 21/90??? Im stumped wich sounds better to you guys?
From my testing, I'd say start 19/84. Maybe even go smaller on the pinion if you can
Neither Bro ,if its a 2 pole motor go 90 /18 stay around 13.5 fdr
If it's 4 pole try 73 spur and like 33 pinion etc fdr around 7.5 💯
@@ConditionZero76I have 9500kv 3.5turn 2pole motor what gearing do you suggest right now I’m at 2.8 at 50mph 22/86 gearing
Are you running 2S or 3S?
2s
U in Louisiana? If so where at? I’m in south AL.
Thanks! Yep, I'm in south Louisiana, about an hour out of New Orleans
Do u have a part number for the side pieces
The aero plates on the side of the car? I actually 3d printed them myself. If you search online though there's a few available on different websites
@@FullThrottleRC do u have a file for them thanks
I don't think so. I don't remember if it was something I found online or just drew up really quick.
How can I keep my nose down. I recently got a 5700 KV on my DR10
Add weight on the front bumper. That happened to me whenever I first got mine and it helped a lot
Okay thanks bro
Limiting the extension of your rear shocks will help your wheelies tremendously, front shock extension limiters will also help. Also what methods of power control are you using if any ?
Weight on the front end will definitely keep it down. And suspension tuning like someone else said. I run a super soft front and a little stiffer rear to let the weight transfer slowly down track.
Power control ?
Blow off your test spot I use WD-40 and belt conditioner made by CNC on my tires and pick up 3 to 5 mph on my et from a 2.67@49mph to 2.47@53mph and I added some weight on the front end I have a dr10 with a new traxxas villennium vxl-3s with a Gensa Redline 5100 130-C with a 72/35 gearing in am going to a 69/35 gearing next and I am using Proline Reaction
WD-40 on tires?
Yes , thought it was dumb too ..it makes the tires super soft and sticky once it dries
Okay thanks bro
That gearing seems insane! How are your temps with that gearing? Sounds like the car is running well but that would scare me. I want to experiment with some tire prep and conditioning next.
How did the 69/35 gearing work out for you
Should have made it look like kye Kelly's shocker
Who painted the body?
I did! You can check out the painting video here if you are interested: th-cam.com/video/6P2WKglgHdg/w-d-xo.html
Have you tried 24/72
I haven't I don't think. I talked with a couple people after this video and settled on a higher gear ratio to hopefully take advantage of the rpms of the motor.
@@FullThrottleRC it’s the ticket for DR10 box stock I’m not sure about comparable with Traxxas.
Motor/esc?
I believe in this video I was running the Tekin RS Black ESC. I'm currently running a Maclan DRK 160. Still running the same Trinity drag master motor.
@@FullThrottleRC what gearing did you end up being the fastest with this motor I’m curious I have a 3.5t 9500kv I’m stuck on gearing Brotha
Try and get the biggest spur you can 87 ... you can run a smaller . Pinion and then maintain the same mile an hour but have a mechanical advantage which will give you less Heat
Running a bigger spur with a smaller pinion will give me the same mph? I'm not really understanding that.
@@FullThrottleRC yes, it is true. I run a 15/87 gearing with a 2.6 trans ratio for a fdr of 15.1. Been 2.449 @64mph with a trinity 3.0 and 60* TOTAL timing. 2 pole motors love rpm. 4 pole motors have more torque so less timing and more gear.
Also to add about the mechanical leverage, it makes the motor use less torque. Less torque is less heat. Less heat is less amp draw. Less amp draw is higher voltage over the course of the pass. Higher voltage is more power. More power is more speed.
@@jeremymothershead6890 thank you for explaining that for me Jeremy
@@FullThrottleRC I didn't think you were gearing for speedruns I thought you were gearing for drag racing ET wins races
Car still is torquing to the left. Maybe put a lighter or change shock oil on the right side. Change to rigid bulkhead and rear a arms maybe,?
The chassis definitely still has some torque twist as I haven't come up with anything to stiffen it up yet. I haven't noticed it affecting the car as much though. I'm making pretty straight passes, most of the drifting is happening down track.
@@FullThrottleRC checking on DL 10 upgrades, since the chassis is one peace and the diff connects to it you have no choice but to change out the stock chassis pan for a carbon fiber or aluminium version or add carbon fiber plate to the rear of the chassisto strengthen it. CF is very rigid. I have sean intagy makes an aluminium pan for the sc10, not sure if its the same. And of course, there are carbonfiber chassis galore for a complete build out. That rear mounting point for the diff, seams to be the weak point of that car.
@@TheBlueberry606 I'm actually running the SC5M chassis which is aluminum, not the one piece plastic pan like the dr10.
@@FullThrottleRC wow. And still getting twist. I wonder if its just the motor and diff housing?
@@TheBlueberry606 I'm assuming its the thin chassis plate and the plastic transmission case that's allowing it to flex. I've been looking into adding some bracing.
What battery
Currently running a Maclan 10000mah 2s pack
7.4 volt? 120c.
@@WildTrailsRC yep👍🏻
If that car has a 3.5 or 4.0 in it I promise you it’ll be faster with the 18 pinion. My car has a 3.5 and has been 2.30@66 on GNSS
What size spur are you running? I've run a 20 tooth pinion and couldn't get over 54 mph.
I’m running a 3.0t motor, and somewhere around 16/84 seems to be the sweet spot for gearing - I’m still fairly new to running these low turn drag motors, but it seems like you need a smaller pinion than you’d think (with lots of top-end timing), and you just need to let that motor wind out.
@@jt8141 Seems like I'm getting a few people saying this. I'm really excited to test it out
@@FullThrottleRC that's because you need to run a bigger spur, the bigger the spur and the smaller pinion will launch harder out of the hole😎 try a 82 or 84 spur with a 18 or 17 or even 16t pinion
@@losoknoso3151 I've been getting a few comments about that and plan on trying it soon! Thanks
I get about 62 mph
Speed will pick up you don't have enough runway
Should use carpet
Dude - this video did not teach me anything.
Sorry about that, it taught me a lot about gearing making it. Best advice I can give is go out and test yourself to see what works best for your car