How 3 Speed Transmissions work in RC Cars & Next project!
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- เผยแพร่เมื่อ 25 มิ.ย. 2024
- Before this thing becomes a shelf queen, I wanted to give a last chance on the 3 speed transmission to work. Originally this chassis came with a screaming 38,000rpm 2 stroke engine which was capable enough to make the centrifugal clutch of 2nd and 3rd gear to engage. The second gear would engage at 5,000rpm and 3rd at 7,000rpm+. The v4 engine though can't do that, as it can rev maximum to 10,000rpm and with the gear reduction it's even lower. That means that it's impossible to activate the clutch at those rpm. Since it's not an adjustable clutch to precisely adjust the shifting point of each gear, the only thing I could do, was to soften the springs of 2nd and 3rd gear of the clutch to engage them at lower rpm. Unfortunately that didn't happen, and I could't soften them anymore, because the clutch shoes could fall out and lose them. I really didn't want to postpone this video any longer as it was supposed to take no more than 1-2 days. I kind of feel shame for posting it, but at least I hope some people will appreciate it. As for the next project, I know many of you won't like it, but if by now you haven't noticed, I weird XD. Seriously though, this chassis, the Schumacher Menace GTR had one electric version from factory with the 3 speed transmission, exactly in the way I'm going to make it. Only different thing will be the size of the brushless motor, which will be huge. As I said in the video, I'm not giving up on combustion engines. As a matter of fact, by the end of this month there's a video coming with a very unique single cylinder 4 stroke engine.
Thank you for your support and nice comments.
► Some parts and tools that I used and you might find them useful:
-Transmitter and receiver: bit.ly/2tMUDNG
-Servo: bit.ly/2SyBMy6
-3D printer: QIDI X-Max: bit.ly/2Ddj6Ao
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-Thermal camera: bit.ly/2SAjInv
-Toyan FS V400A Engine
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-Toyan FS S100G Engine
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-Other Toyan Engine
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Just make clutch shoes out of heavier material. The centrifical force will overcome the spring tension
That's a very clean solution. I like it!
Its mostly due to the lack of power. But yeah sounds like a good idea
If you don't calibrate MD5# and other factors, you might have issues.
Source: my ass
That is also a very good suggestion. I also suspect that the spring tension is still too great. Tip; With a grub screw at the point where the spring rests, you can set the shitfing point by turning the grub screw in or out
@@StevieZeee Who are you callin a grub screw!??!
"I will clean it and replace all the parts I don't like."
[Proceeds to create & replace all the materials]
Mr_ E54 no he just found it funny
@Mr_ E54 Normal people left
Watch the welps
As a fellow schumacher racer I know you spent a small fortune finding those new old stock parts. haha
Schumacher and tamiya vintage parts are worth their own weight in gold.
Yes ! haha
And then there's Vintage Yokomo. Priced like a new element found only on the moon! Restoring an old Schumacher Avenger myself right now, and in Australia the parts seem to be more readily available and reasonable. Procat and Topcoat are a different story
Had an old belt driven 4wd tamiya roller a few years ago, didn't know what i had and sold it for $25.
@@Druid_Plow ouch 😭
No one will hate you for electric engines. Your nice job is what matters
I was legit watching your last video about 10 minutes ago wondering when your next was! Cannot believe it haha thank you for another amazing video
Can we get one last v4 rc video if you can get it to work
"You would hate me for this"
All the comment: nope never
I imagine that nobody will hate him for it, but I also imagine that a lot of people won't be watching nearly as closely. Electric motors in RC cars are pretty common, you can go to any toy or hobby store and have one off the shelf for pretty cheap. These combustion motors, however, are a bit more exotic and take a lot more time and money to get working, something not a lot of people are willing to do, which I suspect is why this series really took off.
@@AiOinc1 - The advantage of electric is the torque, that has a lot to do with the petrol engine struggling to gain revs at lower rpm's. The electric would have ALL the torque all the way through the rev band.
Cannot wait for the next project, very exciting! As always, great video, looking forward to the next as well.
I can't wait to see what you lathe and cnc parts. Your videos are always top notch!!
This custom car blows me away. Watching you 3d print and make your own parts blows me away too. Ive shared your channel so many times.
Boys and their toys !
I think combustion engines are more intricate. However that acceleration of the electric wins. I can see why you want to do something different as you were working on the last project for a long time :D Good luck with the next one :D
both have their quirks :)
Even if it won't shift properly I'm still very impressed with the time and dedication it took to make a running and driving rc car with a real engine basically from scratch.
Your engine build was awesome can't wait to see your next project
What you do is amazing, just amazing! I enjoy all your fine craftsmanship. 👍🏻
That is 1 bad ass RC .You have extreme Patience And knowledge For building such a device.👍👍👍👍👍👍
Awesome build you have done a fantastic job fitting all those peaces
Can't wait to see it up and running Jonny
Actually I know nothing about these small cars, but I really enjoy watching your videos.
Keep going 👍🏻
Abdullah
From Saudi Arabia
same here!
Cant wait to see this next build.
Why hate you? You make vids of things you like to do, and you do it extremely well. You obviously do not make something to please the crowd and we love you for it.
I have never commented, keep this alive! I have followed every single video and with a thumbs up! I really love your work! Thank you for sharing!
I can’t wait. Been a nitro guy my whole life but brushless motors make me smile albeit in a different way.
I can’t get over how insane this thing is.
I made my tmaxx with two speed brushless and it was great I could get it to pop wheelies when it shifted, gonna love this build😊😊😊
Looking forward to the next one!
Such a cool project! I envy your skill
Us hate you? Never!
Johnny: This car works fine and all, buuut....
chucks an aluminum bar in lathe...
That is why we love watching your channel. We can't wait to see what you create next.
Keep up the great work.
Unless I'm misunderstanding this, you're selecting a gear from the engine RPM, not the final drive RPM. With all due respect, that is the opposite of what you want. You need to be able to run the engine at near maximum RPM for power in each gear for best performance. Your governor or gear select mechanism needs to be based on ground speed. It may be easier, although I don't know if there's enough space to control that with a servo and a simple encoder feedback to select what gear is active.
To make this work well, it gets complicated quickly as you'd also need to know throttle input, and motor speed, along with ground speed. This would be an easy job for an arduino and a couple of sensors. You may be more of a mechanical guy than a coder/electrical guy though, and that's ok.
kleetus92 I don’t believe those gears are engaged by engine speed. It’s hard to say for sure from the video but it looks like that mechanism is likely placed on the output shaft of his transmission, thus operating based on ground speed as you said.
I once had a nitro rc car and its transmission was similar to your standard constant mesh gearbox except it had one of these mechanisms on the output shaft, with first gear being driven by a one-way bearing. Once first gear drove the car fast enough the mechanism would engage and grab the next gear.
@@tbdcreations5370 Maybe because he takes the reading with no resistance on the tyres. Once on the ground the RPM might drop significantly enough to prevent the clutch from opening.
@@HarryCrackz Exactly
anonymous32167 That is likely why it shifted properly under no load but not when on the ground, yes.
Ground speed can be best measured from the moon after achieving tire to ground look back up
Love these videos! Keep the coming.
Love your projects!
Very nice work. Keep up all the kool Vid's.
thats a shame i thought it would work! maybe the little arms are getting stuck? maybe the coils in the spring are too close together so the spring compresses fully before it engages? Hope you figure it out bro !
yeah good luck
Hi kev
its good you are taking a more direct route to fun this round. your soul will be happy about that. it will also motivate you to go into your next project with even more ideas and motivation. more fruit for your labor, more often, makes jack a happy boy.
Okay you have slowly became my favorite youtube channel with this build
Can’t wait for the next project 🤙🤙
i would never hate you for that your channel is the best wether you use engines or electric motors.
I love the engine stuff but I've actually been curious about a 2 or 3 speed electric car for ages so i cant wait for the vids
i mean you have a LOT of engines ... maybe you can put them together ... double nitro engined saw doesn't count, it's not a vehicle lol
Ive been looking for a new channel to watch and this is freaking intresting
I am not going to hate you for that. It is funny you chose that as when you first showed the car I wondered what electric would be like with the 3-speed transmission. I am excited to see the result.
Very cool, how much detail in this project, congratulations!
Leandro Wagner.
Lets be honest, after working on a engine that still has problems months after the starting period, I to would want to work on something easier. I do not blame you a bit. You're having fun, and we're here for the ride.
I love that you’re doing an electric build. The variety of builds is nice.
A JohnnyQ90 and a ChrisFix video on the same day?
Now this is gonna be a great day!
I have the same V4 shifting problem also, but I have an idea to fix it. If it works I will share it with everyone. Keep up the great builds my friend!
I have came this far to watch ur succes and im glad u really did it
You are breathtaking. ❤
Nice video keep up the good work
Love your work !
I will definitely continue to follow your career with great interest! Regardless of if it's electric, I just feel it presents less of a challenge to have an electric RC car.
I'm excited for the electric build. I had an electric Traxxis car for a little while and they can certainly move quickly!
waiting for the day when you get started a project of "DIY Helicopter"
No no no no no, that jet engine should go on a F-16
You should try working with that micro rotary engine that you had
Dislike
I love your videos bro ❤️
Молодец не останавливаясь 👍
Oh today is going to be productive and i'm going to get right to work...
gets notification new JohnnyQ90 video is up...
work can wait...
Great vid. Thanks.
If you're done with the V4, I'll have it! I f**kin LOVE that car.
Personally I'd leave it rich, shorten up first gear a lot (you want it to shed those rubber tyres) and keep tuning your clutch pack. That way you can fun drifting on rubber tyres, and then fit foam tyres for ultimate 0-100 in under 1 second fun!
Its finally back
Shortening a spring dose not change the spring rate, it’s still the same spring, you need thinner wire, you have a lathe, make your own springs, just buy the right diameter and turn around a mandrill. But I’m sure you already know this as you an intelligent individual, very enjoyable to watch you progress with these projects.
Very nice👌
Wow,despite me NOT liking you going back to an Electric-motor for the next video...........I was totally re-joyed to hear that You'll soon be making a video of a 4-stroker,so that's awesome!!! Absolutely LOVE every single video You ever do,regardless if it's with electrics or fuel-powered!!! :-)
Let me explain about the gear.
You need thinner but longer spring for the 2nd gear and relatively stronger for the 3rd gear. You measured the RPM of the gears and no load. In loads it never go 4,000 RPM. You need to adjust the 2nd gear spring to engage at 800 RPM and for the 3rd gear 1,200 RPM.
But as I told thinner but a little bit longer spring.
sensacional o seu trabalho, parabéns!!!👍👍👍
You got me with thumbnail lol I totally thought this was a This Old Tony video, I was like what another video 🤣🤣
That what I get for opening YT 5min after waking up 😂
Old Tony is awesome lol
Looking forward to the electric build 👍🏾👍🏾
Excellent!!!
класс, невозможно оторваться от ваших видео!
It is a work of art
I am a Taiwanese who likes your videos.
Pshhh, hate you?? Never! I absolutely love your channel, and I'm so excited to see the electric R/C car build! I've been building 18650 battery packs, and am currently working on an electric go kart build myself! We'll see how your R/C car compares! 😊
I'm kinda glad it doesn't work, part of me doesn't want the car saga to end and was sad after the last video. Honestly, I'm SUPER stoked for the electric one since I actually know about electric rc cars. Lol.
Glad to see you starting a new project. The videos are extremely enjoying to watch and sort of addictive too! On another note, do you really need 3 speeds with an electric motor?
I love watching your gas engine builds, but brush less motors are hard to beat.....love watching the precision and quality of your work.....please keep it up
Congrats for the videos and all your great work. Are you from Greece?
Love the electric choice:)
electric is cool but i personally prefer gas. That sound is awesome. Also you don't have to wait for the battery to charge and you get many more hours of play time
You should build a rotary engine for it, I would love to see that!
I was hoping the "next project" to be a CVT, but brushless beast sounds like more fun.
Nice
it's great idea and beautiful. I'm turkis and ı love you watching you . thanks
I Realy like your videos you are great youtuber
You just need to use a weaker spring for the centrifugal clutch to work. I used to do this when OS first came out with their 4 cycle .26 engines in the early 2000's. They couldn't rev high enough to engage second gear so I found a softer spring to make the centrifugal clutch work.
Shame it didn't switch gears but I still love the whole build. It looks awesome! Can't wait to see the next project 👍🏼
The best way to start your day,
With JohnnyQ90 lathe.
Brushless electrics are insanely fast! I used to be all nitro then decided to try a 5 turn 1:10 brushless setup with a 2C Lipo. It was the fastest thing I've driven.
When you said I would hate your for your choice of power I thought you were gonna do something wack like a boxer, or a rotary engine and I was getting hyped. Little disappointed about the electric engine, but im mainly here for clutch, brakes, suspension, other cool parts. I'll stay tuned as I have been.
Thought this was a good video then read the description where you think it's a fail, nah everyone knows these things don't work first time, publishing your successes and failures help people learn, keep the great videos coming!
Great content, will we see more of that cnc action in the future?
Good vid showed me stuff I didn't know which I always appreciate :-)
... of course the engine rpm when driving the car is much lower than it is when running up on a stand.
I had an issue with a two speed system about 15 years ago... Instead of trying to count on the weighted throws to keep the clutches engaged... I shaped the contact points sharp, like a clock work escapement points.... so they lock in, once they do catch... and stay locked in while under torque/power/throttle....... please note, although this helped a whole lot... they didn't last as long, as the sharp edges dull out pretty quick... but the pulsing, of trying to to stay engaged, then being bogged down, even though, only for a second, was enough to disengage them.. .hence, shaping the contact points to snag and lock into one another ,while under power .. good luck
As always, never failed to impress. Next project: rc car with the rotary engine please I'm begging you.
You should check out the transmission breakdown on a CEN gst 7.7 for second and third gear. There is no spur gear notch To break off. the clutch engagement is fully adjustable without disassembly. Adjustable Spring tension using a set screw.
Awesome
Don't give up on that V4!!!. It looks like it has a lot of torque but not enough RPMs for the transmission. Keep Trying!
Am damn excited about the new electric engine start build as soon as possible 😁👌👌👌 it's really great idea.just hit it😁👌👌👌
Look into transmissions they make some crazy things I've been looking at them on aliexpress and banggood using scale truck parts like frame rails I think a car can b made with these engines more efficiently but keep up the great work
Johnny, your clutch is engaging near redline. I've done the 4 stroke thing myself (airplane 4 strokes into land vehicles). You must use heavier clutch shoes!! That's a 15cc engine it has way more power than you've seen so far.. its just not making it past the clutch. Buy some 1/8" tungsten rod off ebay, and drill holes into your clutch shoes. Press a section of the tungsten rod into the hole and bam, weighted shoes. It will make ALL the difference. There are pics of this solution over on RCTech forums, I can give you a link.
Who else cant wait for him to build a drifting car
Don't make it a shelf queen, you spent hours on it, just thrash it drift or whatever down your street and have fun with it my man. looking forward for your next build 👍
Another great video Johnny, one question though. It seems the fuelling is totally out when its on the road compared to on the stand. Probably because under load it requires more fuel. This could be why it seems to struggle to get to high rpm's. If the enine revs to 11,500, surely you should be changing from 1st to 2nd at 4000rpm and 3rd at 6750-7500rpm? But it don't appear on the street to be hitting anywhere near those revs. Thoughts?
I am really looking forward to seeing that electric motor in action.