14,000 rpm RC 4 Cylinder Engine & 3 Speed MANUAL Gearbox!
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- čas přidán 27. 09. 2022
- Get the engine here:
►HOWIN L4-172: bit.ly/3Bp6Jv3
►Other engines: bit.ly/3DEzpmy
►Other V8 Engine: bit.ly/3BogOsl
Use code q90 for 10% discount on your purchase
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Howin L4-172 Specifications:
Displacement: 17.2cc (4×4.3cc)
Four-cylinder
Four-stroke
SOHC
Cylinder Diameter: 18.00mm
Stroke: 17.00mm
Rpm: 3000-15000rpm
Power: 2.4ps@13000rpm
Water Cooled
Fuel: Glow fuel (nitro) 20-25%
Ignition Method: Ignition Modules (Included)
480 starter motor
Starting Power: 12V/3S Li Battery (Not Included)
Dimensions: 15.2 x 10.1 x 10.6cm
Weight: 1200g
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Make the dogs shorter and wider rectangles instead of round pins. Distribute the load across a larger face rather than point loading on a barrel. Distance out from the face increases bending force. Distance out from center increases bending force. The more compact you make it both radially and axially the more robust it will be.
Take what this person said ^^ and combine that with your idea to make them out of steel. That should bring a damn near bullet proof trans for that 4 banger. 10/10 Awrsome content!!
This man already answer your question but go for a flex steel not to flex but this can decrease the vibration on it. Or make it a longer shift rotation.
Might also want to add a slight angle to the contact faces of the dogs. Think most motorcycles use this concept to help pull the dogs in toward each other under load. Helps gears engage better without the dog "bouncing" of the other when there's a small amount of overlap on initial contract. Might be tricky to machine though.
Facts
@@frikcoetzer1776 and also a slight angle on the sliding face, so they are moving together when slipping.
YOU ARE AMAZING!!!
I’m a Lifetime Motörhead (78 yrs) and YOU SIR are a TRUE GENIUS.
I’d Love to see that set up in a chassis.
Again, Its an honor to see your work.
Thank you!!
Look at the transmission/reverse linkage for a traxxas t maxx. It will stop the buzzing and reduce the load on the servo in 1st and 3rd. Or you could also set endpoints on your transmitter if it supports that - looks great BTW :)
Nice to see gearbox lubricated and covered! Also, I think that dogrings should be made from some flexible metal that can absorb vibration, but not too flexible so it doesn't bent.
Oh man, with load this is going to sound epic with those shifts! Amazing job as always 👌
Can this be used as a generator?
@@debbiebernhardt5406 there is no point of using that as a generator
@@mynameislev how much can it generate? If it can’t handle large loads would smaller loads due?
@@debbiebernhardt5406 these engines make roughly from .06-.09hp or about 45-70 watts. youd maybe be able to power a decent flashlight but not much anything else useful.
@@wormydiaz if it is that much, then a 8 cylinder mini should be able to generate enough power to run aux systems in a car
11:42 those universal joints between the clutch and the gearbox are moving radially quite a lot
I would employ CV joints.
add a small spring or rubber in the engaging faces so you can reduce the impact while allowing a smoother engaging, add steel shafts across the teeth no need to make them out of steel, and add small chamfer tin the opposite side to the face that rest against the dog pin so they don't grind and just fall into the groove
You're making a whole new level of fun on this scale. There are so many uses for an engine that small and being able to select three speeds is amazing! That gearbox is spinning over 10,000rpm! Please keep developing this I love seeing your progress
I think a clutch would remedy the problem. I've been at the stage you're at. The dogs always break off. I built a 3 speed transmission and tried a lot of things but it came down to creating clutch action between motor and transmission. I used an electric motor instead of a gas engine. I built a car and installed the transmission. You can see it being demonstrated on my CZcams video. I really enjoyed your video it is really cool. Keep it up!!
Steel might work for the dog rings, but you might be chasing the failure elsewhere. I'd lean towards using brass, and redesigning so the teeth are much stronger. Once you have the traction and inertia of a car in the system, the dog rings are going to grenade if they're not at least an order of magnitude stronger.
Is it possible to automatically return the throttle servo to idle when shifting? If you have a microcontroller in the loop, it's just a few lines of code to coordinate it.
Like quickshifters on a bike do, except I think they kill the spark rather than the fuel iirc,
Add a clutch pack
Love watching your videos. All my childhood wonders and visions coming to life thru your builds. Literally all the craziest things I thought were impossible YOU made possible. Would there ever be a chance for someone to own one of your creations? Like a actual working car or even a table top model sort of like this?
Man I bet you had the biggest smile on your face seeing this work. I know I did. Freakin awesome bud, this needs to be in a RC car immediately lol. Will you need that big wheel too, or just let it do its thing? Amazing job and video. It runs so smoothly. I really want to see it in action. Will the torque of the wheels change everything? Or will it pop a wheelie in 1st and 2nd gear like my triple gear Schumacher 21 motor lol.
You make me want to get that bad boy back on the road again.
I cant wait to see what you have planned for this. You're one smart guy and I thoroughly enjoy your channel.
I’m sure the big wheel is just for load or else the engine rpm wouldn’t change at all when he shifts as the gearbox doesn’t require much power to spin at all.
Make the dogs out of a softer metal than aluminum. Steel would turn your gears into a consumable when the dogs should be the point of wear. Try brass with smaller square dogs so there’s is more point of contact spreading the force of impact. Like 1mm dogs and 1.25mm slots on the gears themselves. Take a look at motocross bike transmissions and also use gear oil in a sealed case. Grease will only fly off the gears with heat and centrifugal force. Oil will always climb up the gears from the reservoir at the bottom of the case.
Try 5 dogs that are shorter and smaller. The point of a dog box is that so you can no lift shift and that’s why sequential gearbox box’s are big money for racing. ☺️
Also gotta use GL4 rated fluid since it causes the brass to develop a layer of oxidation that hardens/helps lubricate
With all that machining capability, could you make a synchromesh system instead of just dogs? Also, how does the clutch work? How do you start out from a stop? The engine idles like over 1500 RPM, doesn't it?
It looks to me like you are really pushing that engine and transmission hard. I'm not saying you shouldn't. I guess your goal is racing. Maybe you could video that transmission at high frame rate and play it back slow motion so we can see more what's happening. It's amazing how well it all works for being so small! Cool!
Has anyone made a servo-operated friction clutch, or a fluid coupled torque converter at this scale?
I was thinking of redoing the brass synchros then making a sealed gearbox housing to be able to put transmission oil.
Bravo for the quality work!
Комментарий в поддержку канала и ролика, а также труда мастера.
Nice work
I agree dog rings out of steal or maybe brass. In full sized applications they are usually a very robust material.
I think it would be really neat if you could make a sealed gearbox case that used actual gear oil. You seem very talented at this small scale applications. I understand it’s a big undertaking but man that would be awesome.
Holy cow dude! I love the tiny engine content... but BANGING GEARS through a tiny gear box ?! Now that's just awesome!!!!
I'd love to see different motors with a similar demonstration.
The attention to detail in the engine is mind blowing, amazing the way its been engineered like that with so much detail, it blew my mind.,,it sounds like a mini motorbike engine the way it spooled up so quickly, fantastic the way it blew through the gears. Wow.
Steel gears are a must I'd also say double the belt from engine to clutch with twin pulleys the belt might be the next weak point reving that high, beautiful workmanship as always to
I would like to see the power output in each gear and then just the engine! Great work as always!
So nice to see this contraption finally come together, good job.
Nada como um trabalho bem feito. Parabéns pela construção e montagem .
I wouldn't make the dogs out of anything harder than what your gears are made of. The idea is that the dogs wear out before the gears so your failure point is less catastrophic. I'd just find a way to make them shorter and a tad wider to keep the forces closer to the body of the ring and mitigate the amount of torque at the base of the pins whilst simultaneously making them more robust with he size adjustment. You're extremely close though! Very cool!
Also, did you try downshifting? Lol this is one of the coolest things I've ever seen, definitely make them out of metal, have extra gears on standby hahaha 😆. Great job bud, it's so cool to see something you thought up, built and ran, work like it should. 👏 👏 👏 👏 Just awesome
it can't "downshift" as you mean because of the centrifugal clutch
@@dmartinr41 he did it in the video, the downshifting would only apply the clutch more
JohhnyQ90 back at it with another stellar build! Aftermarket for these lil engines is what makes a geat head, a gear head! Keep up the work, it's paying off!!!
WOW! amazing sound of the gear box !!!
Absolutely incredible little project that you have got going on there 👌🏻
so sick ! that sound of revs vrs shifting is gonna be so cool in a car !
Hey! I have the same transmitter for my RC stuff. Has been pretty great except sometimes the steering doesn't go completely back to neutral input when you're not touching the wheel. That being said, I do like that it has so many features, like exponential adjustment, virtual end point adjustments, ABS control, launch control, and many, many more. I would give it an 8 out of 10. I do like that you can get super simple or up to 6 channel recievers for it. And that it has if I remember right, 10 model memory.
Also, bronze may be a good choice for the sliding shift collars. Not as hard as steel, but tougher than plastic. And, that's generally what legit manual transmission synchronizers are made of.
Beauty of an engine! The shifts sound good!
A scaled down synchromesh would be awesome to see, I don’t know how it would perform being so small though.
I wish I was this good at something. Keep up the great work!
That was great just to get as far as you have gone! You are Rocking it! I love your videos just to see how far you have gone.
Thank you, 😊
Use brass for the dog rings! That's what they use in automotive applications, but they also use an oil that causes the brass to develop a layer of oxidation that hardens/helps lubricate, so idk if using grease changes that enough to matter.
I run brass dogs on my tamiya semi and they stick under load I think steel would be great but with a nylon bushing in the center to slide
Awesome video as always
I find it amazing all these great machines use the Dewalt router as their router. Every machine at my job uses it. I love it.
It seems that the strength of the dogrings is more of an issue than lubrication, but once everything is made of metal, I think filling the transmission roughly halfway with gear oil (and maybe the grease too) would be a good idea. And set endpoints on the shifter servo so it stops buzzing as others have said. Only make it throw the linkage far enough to get into gear.
For lubricant you’d want to use one or the other, not both, grease isn’t soluble in oil so it’ll just make a mess, grease in this case would probably be best as the case doesn’t really have to be sealed as it would with oil, but having a sealed case with a gear oil bath would give better lubrication
You can set end points on the TX so your servo isn't buring up. You can use the dual rate I think.
great work! Pros always make things look smooth
Whoa!! The needle crank bearings are awesome!!!! I do see some major issues developing over time with that setup but hey, not like this thing is powering a semi truck. Its adding moving parts to an already chaotic atmosphere, internals of an internal combustion engine. Over time, no matter what you do, metal particles WILL make their way into those bearings. The second one of those needles gets scored enough to render it just the slightest bit smaller than the others, it will create insane vibrations and throw off the harmonics of the whole engine in turn causing catastrophic failure. Like i said, not an issue with this little guy but, a production engine thats gonna do 100,000 miles or more definitely an issue. Not to mention one could get something stuck between itself and the race causing it to stop rotating. Hell they could even bind up with one another because theres no seperation girdle.
thank you for your videos I love them so much also appreciate the fact that you don't narrate or talk I'm sure you're a great person but I really love just not seeing people's faces when they're talking about the product and you make such an amazing product
l second that not talking through the video... in technical repairs or builds such as this one some people talk too much. all the talking is done with your mind and your hands, thanks.
with gears made of aluminum dogs of plastic, shape those dogs into rectangle as mentioned previously. next try stronger material im guessing is carbon reinforced plastic ?
anyways, try stronger material as needed til you find the strength needed without damaging aluminum gears...
27nov2022.dellthecomputer
Cómo siempre una maravilla tu trabajo Felicidades
Yes steel will have a much slippery change during gearing and longevity. Aluminum will just get wear out jamming till destroyed. Nice project!. 👍
It seems to me that the teeth on the dog rings are usually trapezoidal, so that they find alignment, but then once everything is lined up, you can have more and thicker teeth engage. I think that would give you less breakage.
Simply amazing. A work of art
A couple of things. The dogs should be rectangle.
A tip is to also cut a back angle on the dogs teeth and the matching hub/slider, this ensures that when the dogs are engaged they lock together.
Also even though they can be shifted at WOT there still needs to be some load taken off the dogs by either slightly lifting the throttle or as we do in race cars is cut ignition. Obviously that’s not an option for you.
Love the gearbox and setup it sounds awesome. I think they should be made out of brass but more teeth also be flexsable enough. ❤🇨🇦
Man I love your videos so much, they're so satisfying to watch. Keep up the content!
This is definitely one of your cooler builds!
Едренакопать, чел ты крут! хотелось бы увидеть такое чудо в маленькой RC машине)
Damn good machining 🤙🏽
My first instinct for this is to get a little arduino nano and fit it between the radio reciever and the servos so that when you tell it to switch up or down a gear it can automatically lift up off the throttle. in regular car engines you would have a clutch to disengage the power but lifting off the power was the old way of doing it before clutches were a thing. the only other way of doing it is to have sensors on the gear box to time when they angague like on a formula one car but that's even more complicated and still an electronic control system.
hardened steel dogs should do it 😅 Great work as always man
Square up the connection pins and use aluminum instead of Teflon. Try a 2:3 ratio for the pins.
Love your videos man, it always entertain me. I would like to see you add fourt gear or maybe reverse or maybe both. Also I agree with the idea of making the dogrings out of steel.
WTF!! seriously, amazing....speechless!
Works really good. Keep up the good work! you should make a custom top plate for that engine with your name on it.
Pretty rad bro you never cease to amaze me.👍👍
Thats awesome!
Steel is a good upgrade but not gonna stop the rough entry. Maybe shape the teeth on the ends to have a nice centering point so it can engage quicker.
My favourite idea would be to make a planet gear setup with brake bands that can be tensioned around the planet gear drums to lock each gear but all on the same output shaft and lock each ring gear individually. If the gears didnt need to be lubricated id say use normal RC brakes modified to fit a ring gear.
🤔
Love the detail on this one
Synchrons! I want to see it with bronze synchrons! Amazing work by the way! Keep up!
นี้และสิ่งที่น่าดูเพลิงเลยคับ สุดยอด
So beatiful to watch you, making things. 😉👍
I still want to see someone build an RC car that is controlled by a racing wheel. Imagine driving an rc car with googles, steering wheel and a 6 speed manual gearbox. This is very cool though. I really enjoy watching you make things. Keep it up!
I'm surprised you didn't go with steel in the first place, but looks like it's gonna be awesome!
Worked , thanks a lot!
Steel or brass dogs are a must, and with a lot more teeth (6-8 minimum) to spread the load among them. Don't forget to chamfer the tops to ease engagement and reduce any gouging of the female parts. as they'll just act like a high-speed milling-cutter!
I'd be interested to see how hot the internals get after a long run under load, that'll likely show you the next point of faliure too! I love the case, it'll help keep the grease in, but if you find that localised heat build-up is an issue, you'll need to switch to using oil.
In many automotive standard transmissions, the Synchronizers are made out of Brass or bronze. That is what I would suggest making your next set out of. Also, I think it is fine that you made the load mounts with bushings but, why didn’t you just use bearings? Anyway, still enjoyed the watching the project. Thanks for the vid
11:51 - might want address the shaft balance issues there before either the gearbox bearings explode, or the ending bearings, or the U joint!
wonderful design. Try to make the external structure of the transmission in colorless material and in such a way that it is well sealed, and then instead of using bearing grease, use transmission oil, because I believe that with the grease in a few minutes you may lack lubrication and start creating stress on the parts. Congratulations on the project and dedication.
Great video as always. Got to show an updated version of your shop. Its been awhile. 🙃🙃🙃
Nice work. A suggestion would be to have a tachometer on the large flywheel and one on the engine to show the differences in RPM between the two.
Stoked to see this in a car. :D
You could set up a system where a device knows what gear the transmission by where the selector arm is and can interpolate what RPM the engine needs to be to be in whatever gear you are selected therefore always being rev matched.
Hey man🤘 I’m here to say that the best part of this concept will be the downshifts 🤤it’ll be the first fuel based scale engine rc build to acuity go through down shifts.
Have you guys yet seen the blower engine, it has that classic roots blower winding sound. We’re getting to that point… imagine all those features in one build.
Amazing. Once again an awsome video! Thanks.
But if you want a good gear change experience maybe look into synchro-mesh gearing.
Might be a little hard to achieve, but should be do- able on small scale.
This guy will have his own tiny army and take over the world with tiny cars and tanks
If it were me doing it - I would make it all out steel - put it in a casing where it can draw up some lubricator- that sucker would work slick as hell. Really damn cool.
I think brass dog rings and a gearbox with oil, not necessarily a heavy gear oil but something lightweight. Awesome job all the same.
works amazing, good job ✌️👌💪👍
If you make a small radius at the bottom of the dogs flange face you will eliminate the stress riser causing the dogs to snap. Basically you are providing a place for the crack to start like a crease in paper.
Looks like a lot of fun.
I'd love to see what you could do with a full size cnc machine and the budget to go crazy with it
CAnt' wait to see the car you put it in.
You've got awesome skills.
I agree with you about making the dog ring's out steel cause that's a lot of RPM for plastic to handle
At those rpms the gears are going to fling all the grease off in short order. Suggest some kind of oil bath. Maybe seal up that case and fill it a third full.
Awesome mate well done.
You can try the steel dog ring. It will last a lot longer but with your design the weak points will become the aluminum gears getting worn edges or straight up snapping like the plastic. I doubt that will be an issue with the stock power but potential issue if you increase engine power too much.
this is a cool one. I'd love to see it with steel, even hardened, instead of the UHMW you use now. Nice dog box, you will be drag racing in no time
Might as well go with a 6 speed manual next! Great work as always.
and I didn't see a reverse, yet...
Yes, definitely make the gears out of steel. I could watch machining videos all day.
Very cool build! I wish you could show the RPM’s of the engine and the RPM’s of the output shaft of the transmission while it’s shifting.
Thats really cool.
Still killing it 🤘🏻
Wow,that was really cool to watch JohnnyQ90!!! Yes,definitely make those dog-gears out of metal using those kind of RPM's!!! Can't wait for your next video!!! : >)
I was using split needle bearing back in 1965 for textile machinery.
2:32 the drill bit makes a sound like an up keyed universal studios theme clip
Steel dogs will make it sound like a mini race transmission, but it's going to be really hard on the gears if you're doing it under load. It will transfer the shock to the gear mesh where you only have a tooth or two in contact at a time. I'd keep the dogs made of a softer material and make the engagement shorter and fatter- more rampart than tower if that makes more sense.
I was thinking of making the dog rings out of carbon fiber
Vous êtes vraiment très très fort !!