I 3D Printed an Air-Powered Engine with Honda's VTEC 

Please do a multicylinder version of this with v-tec! That would absolutely awesome, love your ideas man!

Air Engines are Back Baybee!

For a mechanical solution of actuation of the Vtec you could use a centrifugal clutch or a centrifugal switch

I love the fact you're able to make such seemingly complicated systems far simpler to design and 3d print! I'm actually working on a VVTI system for one of my engines and your video has given me some inspiration. Thanks bro!

An external flywheel with weights on springs or gravity, like a steam engine, would work for enabling your VTEC mechanically.

It needs a turbo

amazing work man! Having the pressure work to your advantage to close the valve is pure genius!

I would suggest to make it multi cylinder if you go for sounds. The timings between cylinders is really important when it comes to the engines melody. For the automatic vtec engagement maybe use valve float with a really late actuation and a buffer. Meaning that you have a cam with a buffered peek that actuates vtec. At low speeds the buffer compresses and the cam isn't triggering the pin. But at higher speeds the buffer has not enough time to buffer the cam peak and it engages the vtec pin.

It’s all fun and games until a ball bearing hits you in the eye 😂 great idea for a weighted flywheel though!

I'd also add a bushing or bearing between the rod and crankshaft to reduce friction, heat, and wear. Many small 2 cycle engines can run at crazy high rpms and last for years using bearings

this also explained vtec in an easy to understand way. commenting for the algorithm, may this video spread far and wide all over automotive youtube!

you could make a system sort of like old tachometers, where you have two plates with magnets spinning individually where the vtec plate has a torsion spring to set a minimum rpm and the other plate is connected to the crankshaft.

amazing project! really cool! the exhaust is a really cool idea, now add a centrifugal glutch that drives the VTEC mechanism at a given speed ;)

I dig it. I build honda engines for fun and you nearly nailed the explanitions. Nice project and an even better video.

What a clever solution to the valve problem! Looking forward to seeing more from your channel soon!

intro was funny asf, been looking forward to this video

An alternative approach could be to design a flywheel that harnesses the centrifugal force generated during rotation. In the past, many steam engines and other rotating machines were kept at a certain speed using this method. By utilizing the centrifugal force, the flywheel could effectively engage the VTEC mechanism. This could provide a potentially efficient and reliable solution while minimizing additional friction in the system. Another idea is to utilize the principle of "valve float." This occurs when the camshaft rotates at such high speeds that the valve lifters begin to float and cannot fully return to the base circle of the cam. By incorporating this principle, it would be possible to activate the VTEC mechanism. The advantage of this approach is that it is likely to consume less energy compared to a centrifugal flywheel clutch plate. This could provide an efficient and energy-saving solution for engaging VTEC. Eddit: other idea

Incredible content, you are very underrated

You must use ABS fillament instead of PLA/PETg for higher temperatures and CF for frictions

that is so cool man i always liked air powered engines but theres not many content about it. Its cool to see

My ideal automobile has mechanical valve timing & fuel injection, a preselector gearbox, and zero essential computers. I enjoyed your experiment!

at 7:30 it sounded like a truck sitting on a jake brake haha

To kick in during certain RPM, perhaps look towards something steam engines couldve had which was a spinning shaft that raises up based on gyroscopic forces.

+REP for the exact eurobeat song playing during the ek9 fight vs the ae86, that made me giggle. Great video though, really is cool to see VTEC implimented into an air engine.

With your crankshaft melting, I experienced the same issue at high rpm, which was completely resolved by using petg instead. PLA will soften very easily under heat. PETG will do amazingly :)

You could use a centrifugal clutch, like an RC car uses, the engage VTEC at a certain RPM. Based on the springs inside the clutch you can tune at what RPM it kicks in.

You sir are hilarious! The intro, 5:06, and 7:44 are some of my personal favorites. And your builds are hella impressive. Subscribed

I love that self sealing valve! The air valve was one of the biggest pains in the ass when i was building mine wish I thought of this!

Only seen 2 of your videos so far... but very entertained. Your persona is super familiar, very relatable attitude. Happy to see your future content!

THAT PASCAL'S LAW IDEA IS AWSOME! I cant believe I didn't think of it sooner. the vtec idea is a good idea since truly variable timing is difficult to do, especially at small scales. Im making a 2.5cc 3d printed air motor that oil filled with an oil pump so it can be reliable at extremely high revs but vvti would never work on a cam thats 8mm wide under a few pounds of valve force revving to 7k rpm. however with that pascal's law idea, if I can fit it into a 2 inch tall motor, will allow for a delicate vvti system to work as it wont be under such insane forces. great video as always, I love seeing your channel grow so quickly!

Perfect timing!!! I was just browsing your channel moments ago wondering when your next upload was gonna be lol

This helped me understand vtec way better than anyone else ever described

These are my favourite videos right now

i loved tom stanton’s air engine series glad to get this recommended to me

I suggest adding the weighted rotating levers that contract upon higher rpms. I dunno what they are called, but i know that they are used to measure rpms through centripetal force. Put that on the valves themselves and it should work right in theory if you add the right springs to counter the rotating levers forces...

5:13 Rip fish that was chilling

Bro that valve design detail at 2:40, genius, absolute genius. I still have to finish the video and im sure ill be further impressed. but that made me press subscribe!

The screwdriver, the most versatile tool, used from tensioning belts to splitting spheres

use something like what they used in old diesel engines for fuel control, so it engages at the higher RPM automatically or add a torque slip gear for it to engage at a certain load

That header sounds just like my gokart or the old honda clone motors we used to race with!

A simple solution to your automatic vtec would be something like a steam engine governor. As the output speeds up, some weights are flung out and that motion engages the vtec. If you are looking for it to activate under load, make a coupler that allows for about a quarter-turn free play. Use that relative motion between input and output to activate the valve timing. Easiest thing to do there would be like on those pull-string toy helicopters. Essentially couple of circular wedges that push apart as they are turned. In this case a spring would keep them together, and once under enough load to overcome it, the outer half of the coupling pushes a lever that operates the valve timing mechanism. Also, nice Half Life "dunk" sound effect at 5:45 :D

So proud of the quality of your videos these days. Also the views your getting goddaaamn

Finally the algorithm worked, I loved your video about the 3d printed carburetor, greetings from Brasil 🇧🇷🇧🇷🗿🗿

Compared to other yt guys building air engines, this is much more advanced level

This is revolutionary. If you scale it up you could make the first air powered car.

Put oil in the crank case and an air oiler on the air supply to help Valve sealing and reduce friction

Something like a governor on a lawnmower engine. It’s gear driven and uses weights to move a lever at a set rpm using spring tension

When you mentioned triggering the vtec mechanically, I remembered that centrifugal clutches exist. There could be a way to 3D print one and tune it to kick in when needed; I'm just not sure how a static/rotating thing could trigger an in/out mechanism...

Title was all I needed to subscribe. I can't wait for more

Bro this is so cool. This is some of the most I’ve learnt about engines and it’s 3d printed!

I see u are a cultured individual... loved the initial D stuff

To make VTEC kick in automatically mechanically use a centrifugal clutch

Amazing video man

This is by far the coolest air engine ever biult! If you take a Demel to the exhaust you can make the exhaust port bigger so more air can escape. But there definitely needs to be some bearings in there. Cause that plastic on plastic action isn’t doing the engine in favors

this is the first video I've watched of yours, and I LOVE IT! I'm definitely subscribing. this channel is so good!

Appreciate the stone throwing break mid video

The first 4 minutes are brilliant... Edit: People w Hondas, even a big dopey Odyssey, know the far away motorcycle styling pedigree compared to Toyotas, etc.

You can use a mechanism closer to hit and miss engines to deal with the VTEC.

Am i the only one who realized how long the video is or shall i just keep it to myself

I dont know why but I am always super hyped when I see new video from you ❤👍

The VTEC should engage as the result of a mechanical governor. Weights spinning around against springs, and when spinning fast enough they lever a plate that pushes the VTEC engage pin in.

3:43 that's the face of a happy man

Vtec kicked in yo!

Plus this guy is funny!!! while also being pretty damn smart! Very entertaining as well! Thanks Camden!!

Try and make a governor on the flywheel and use the output lever from that to engage the vtec. Should be simple and should should cool when you rev it up.

I really wanna see you make a 4-8 cylinder now! Very cool. ❤

fairly stright forwards, like steam engine style limiter, or governer, have a spinning counter weight butterfly looking thing belt driven, so as it throws out the weights by restraining the base the top can move freely and get closer to base and then push in the pin, or a through pin to activate the vtec plunger as a desired rpm range

Well done, Gordon

A spring loaded ball valve that triggers at a certain psi would probably work for enabling the vtech, you can also adjust when it happens by changing how strong the spring is

I think a governor is what you're looking for that can step between normal and Vtec at different RPM

Great little engine.

5:13 natural instincts took over 😂

I finished all your videos can you make more please.

Automatic engagment would be some kind of weight using centrifugal force tensioned with a spring. At a certain rpm the weight would slide outwards and engage me mechanisms. Just a idea might be complicated to implement or get the right force spring.

One of those spinny ball governors you see on old steam equipment might work well for triggering the switch

new watcher here,.....your comedy is perfect ! it reminds me of Integza

You could have a small air passage from the intake that leads to an adjustable valve for a pneumatically actuated solenoid

If you want a purely mechanical mechanism to engage the VTEC you could maybe try doing something similar to mechanical engine governors or flyweights or something

for the mechanical vtec activation you could use the same design that a governor uses except instead of modulating throttle at whatever rpm it just pushes harder and harder on a spring and then at whatever rpm it has enough force to push past and enable the vtec actuator

Build a metal crank & rod, with metal bearings (or bushings). Look at a lawn mowers governor for a way to activate VTEC mechanically. Have the goveror spun by the crank, & act through a spring (like it does the carburetor throttle) to a lever that activates VTEC through a pushrod that is resisted by a spring. Then it would activate VTEC at a certain RPM & disengage at a certain RPM.

u should use a centrifugal clutch that would control the V-tec after a certain rpm

add bearings or lubricant to the crank shaft and stuff, reduce's friction therefore less temp, longer lasting

NICE ENGINE

A centrifugal actuator similar to what makes up the governor inside little honda VTwins might be usable to activate Vtec. Could be tunable based on either mass or radius.

Love your videos

I like seeing how natural and relax you are speaking now. Compared to your previous videos that made you looked like holding a fart. Too stiff and too formal.. Now you are more lose and has more freedom.. Feels refreshing.. Supah Nice..

Find a way to use a system like those old yo-yo's called "the brain" which had a brake that was released when it spun fast enough to let it spin longer. If you had that type of system on the camshaft with two different hard stops you could possibly make it such that the smaller cam was engaged when the brake was engaged and the larger cam was engaged when the brake wasn't engaged and it would be fully passive. Might take some tuning with some sort of torsional spring so when it slows down it returns to the first hard stop but could work.

Man thats cool! Im really impressed! I think I'll now design a 5 pot 3-D Printed air engine....I just like that 5 Cylinder sound but never thought to do something like this with my 3 d printer until i saw your videos✌️

VTEC JUST KICKED IN YO WOOOOOOOOOOOO

I legit got a honda ad before the video

U could use a governor (centrifugal weights) to turn on the v-tec, like they used on steam engines to control the speed.

The sound of that engine’s valvetrain sounds uncannily similar to my single cam Civic idling

For a mechanical solution, you could make some sort of governor that actuates your solenoid. It would need a bit of linkage and weighting the governor to open at the right rpm might be tricky, but it would be totally mechanical.

That's pretty tight bro.

My guy made the vtec kick in

Use the position of the throttle let say around 70% throttle,add something that hook between the throttle position and the vtec button

A centrifugal clutch could engage at some desired RPM and could in some way engage VTEC

you just showed up in my reccommended and im sad i havent seen you ealier this is so sick

I appreciate the stone throw

You could possibly make a centrifugal clutch to somehow actuate the pin.