I forgot to upload the files until just now hehe, they're in the description

now run high octane through it

One thing you could do to have a stronger crank could be pressing a metal rod/pin through the center. Could also use a long screw to achieve similar effect.

Man, its fun to see a series of progress on a project like this. And as you can see by the numbers, it is fun not just for me. If youre enjoying this, please continue

A lighter con rod and piston would reduce the force on the crankshaft. Also, the closer the crankshaft bearings are to the con rod, the less bending moment the piston force will have on the crankshaft.

You could possibly print counterweights on the crankshaft to make it not want to flex as much from the piston moving, as well as drilling a screw through the print to give it extra rigidity.

I just wanna say it's impressive and amazing seeing the difference in confidence you have on camera. In the earlier videos, I felt you were a bit tentative but now you're just hitting us with a slightly more manic but more genuine self. I love it! I've always wanted to make videos but get hung up on camera presence and the type of content people want to watch and this is a big inspiration / motivator, that if I could reliably upload stuff I would hopefully become more watchable! Thanks Cam this is a sick project and congrats on more than 10K subs! I'm sure it'll soon be more like 20K+

I'm excited to see where this goes in the future. Possibly more cylinders? Perhaps putting the E (Electronic) into VTEC? Maybe even continuously variable valve timing/lift?

I like the video Camden! Just curious though, did you ever try making the piston airtight? I’m gonna guess you did so my question is more, how did it go?

Even thou it is not too much power, the VTEC manage to increase it by over 20%. That's really good!

I absolutely love the audio dyno. What a fantastic no code demonstration.

Awesome video- your delivery of the lines is entertaining making a great combo of comedy and education

I love the cassette dyno! Also, that diaphragm solution is very clever!

I stumbled upon this channel a couple months ago because anyone who can make any sort of engine is super neat. Congrets!

Let's goo! 21k subs, this is my first video seeing from you and first impressions amazing production quality with great angles, clear and comprehensible speech.

im glad you are getting the recognition you deserve, these videos are unique and fun to watch.

Some of the coolest, most useful, and educational 3d stuff I’ve seen

5:11 Experts are now saying Air Engines should use EGR to reduce Dangerous Dihydrogen monoxide emissions, so I’m glad you’re staying ahead of the game.

I just found your first video today and was sad that I had to wait for a part two but no you have perfect timing. Love the videos man keep it up

Has anyone else noticed we have seen an absurd jump of quality engineering related youtube channels? Feels like every other day I get recommended a video of some guy doing crazy things with a 3d printer and well edited videos with few subs lol

This is some really impressive stuff, looking forward to seeing where this channel goes in the future.

50 seconds in and i subscribed... there is a "this channel will be big" kind of vibe comming through! :D

Bad ass. I've been subbed for 2 years. It's super cool seeing your Channel grow.

Found you just a couple of days ago, stuck around. Love the content and hope to see you keep growing. Good luck, and keep up the great content. Bless the algorithm :)

damn you upped the production quality for this one, talk about being prepared for success. glad you blew up with that one video, the rest of your catalog was great. keep it up!

His videos are getting better and I’m here for it

Great video, great presentation style and great editing; look forwards to your next video.

Your content is just of my type. I like it.

glad you blowing up i realy like your content and i woud like to see more of it specialy cuz your ideas are not that boring like other peoples

This series has been awesome throughout. As a former auto tech, variable valve timing is one of those "damn, that's brilliant" things when you learn how it works.

Algorithm recommended this video to me, and it's absolutely great! It's as if integza and code bullet had a baby! Love your humor and video style. Keep it up brother 🤙

i love your channel and i cant wait to see you reach your potential!

when I opened my KZfaq subscriptions and saw you, I instantly had to see your new video.

I love finding channels right when there about to get big

After I saw the first one, I was excited for the next. Nice video!

Nice af. You deserve all the attention.

Dude I love 3d printed air engine I've probably watched all of em on KZfaq I'm glad you're doing some now these are so entertaining to me. Also I just found your channel

nice to see these things implemented, keep up the good work. : )

Can't wait to see your progress on this engine or on new ones.

After watching this video, I find it fascinating how I've gained an understanding of various concepts such as horsepower, torque, and the mechanics behind the dyno. Although I can't pinpoint the exact reason why

I watched 3 of your vids before going to sleep, and you just uploading this one, i guess I'm sleeping 5:30AM

3D printed titanium solves the crankshaft fatigue problem ;) Subbed after watching this. The previous video of yours I watched a few months ago hadn't convinced me but the algorythm knew I'd like this 1.

When that 3d printed vtec kicks in

great job as usual zaddy 🎉

So this is pretty awesome, but again, it would actually be a good idea to actually add counter weights on the crank shaft to help reduce vibration

Awesome engine work as usual!

Hey Camden, great name btw. I just wanted to say I am very much enjoying your videos, keep up the great work! 👍

The sound it makes is so cool!

Awesome video, underrated!!

Something that could greatly increase the power, and reliability is desmodromic valves. I think part of why it was losing power was because of spring fatigue and valve float, both of which would be fixed by desmodromic valves, another is by giving the engine Aluminum Can Cylinder Liners. Instead of two abrasive Prints working down the outer layers of each other, friction could be reduced by the aluminum from the walls of a soda can.

I believe there are some free open source dyno apps for windows online, I haven't checked but I saw somebody use one a while back and it is way easier as it does all the math for you, all you need is the rotating assembly weight and the rpm. I would also recommend getting the valvetrain fixed up before moving onto new motors, I had a lot of valvetrain issues on one of mine as its tuned to make power at around 6.5k rpm right now but you would be surprised how much extra power properly closing valves makes. it also shouldn't be too hard with your motor as its massive and you can easily fit some small springs into the timing system or something. anyways awesome video as usual and its awesome to see your sub count rising so quickly!

Love your videos!!

Oh, nevermind, your exhaust pressure idea sounds way better than my governor idea for trigger the VTEX

A twin cam head would be sweet to see !!

Nice job! I want to make it in Lego now!

Regarding the clicky crackles in the audio, iZotope RX can remove those. I don't know what's causing it since it doesn't sound like you're overdriving or clipping anything. Maybe there's something that's compressing/limiting the audio levels to level it out and then normalize it back to max level, but every now and then one sample of the signal gets chopped. It doesn't snap crackle pop when you aren't speaking as far as I noticed, so it's probably not a loose wire, it's gotta be related to the input signal level. Your engine braps really good. Obviously a gas engine braps differently from the small explosions combined with the exhaust flow, but I have no ideas on how to get something like that explosion impulse, unless you were to just add a little mechanical snapping sound to it somewhere in the exhaust just for acoustics. Like putting a playing card on a bike's wheel spokes.

Damn dude, I want to follow you in doing this! See if I can make it like you have.

I'm a certified 3d printing autist. I have put well over 10000 hours on various 3d printers and have years if cad experience relating to 3d printing. I have 3 recommendations for the engine: Filet and thicken the crankshaft Use oriented infill or increase your parameters settings to achieve 100% infill It seems thet you have some voids in your print, you should increase the extrusion rate

If you're worried about user repeatability then finding solutions using materials and methods anyone could copy could help. You could absolutely do things using metal. Ive learned from watching youtuber/rc and aviation hobbyist that you can get all sizes of brass pipe and easily cut it with a hobby razor by rolling it. You could use these brass pipes as sleeving and bushings for the crank and cylinder walls and other wear locations to reduce friction and heat, as well as increase longevity. Plus, its cheap and anyone with an internet connection can acquire the right brass.

i love the explanation and the math behind it. also clicking noise every now and then in the videos audio?

Honda needa hire bro!!

This is insane your awesome

Nice! Keep these coming

congrats on 69k subs

I've made some parts that have to move within another, and a simple thing that makes a huuuuge difference is ensuring the grain is either perpendicular or parallel, but if parallel, only in the direction of motion. having the grain/layers parallel against the direction of motion is friction hell

dam bro you are one smart cat . well done

Awesome project. I think bearings or at least homemade bearing surfaces would be well within fair game to consider this still a 3d printed VTEC Engine. Very cool!!

Dang I didn’t expect your channel to blow up this much but I think you deserve it Also, will there be any more videos on the 3D printed combustion engine project?

You could use a piece of pvc as a cylinder sleeve insert ,for a smooth bore

Funny ✅ Informative ✅ Subscribed ✅

You should make a boxer 4, this might help to balance crankshaft forces a bit. Or make something weird with a wobble plate instead of crankshaft like e-rex😅

I left this on an older video but it's worth mentioning here. Make your parts as a positive with funnels, minimal infill, and make a mould with plaster. Melt the plastic out and fill it with aluminum. Now you're 3D printing with metal.

I wish you could make an opposed cylinder version (that would increase efficiency a LOT Or a boxer one that would remove the fatigue issue you have with smaller crank shaft

Love this!

Inline 4... And I'm waiting for that next video my dude.

I feel like the valve activating the VTEC is limiting the power. Since it requires back pressure to activate the valve, the engine is basically fighting against that, which means its losing power. Try measuring without the self-activating vtec through the exhaust and activating the vtec manually to see if there's a power increase.

Hey, you’re getting 20% power gain with your VTEC!

Love to see a 4 cly version

@CamdenBowen You should reengineer it so that you can put oil in the engine. It won't heat up as fast as should lubricate everything. Might fix your crankshaft problem

The method I'm using to make the "3d printed part" stronger is embedding a bolt inside that parts. Make a hole in the model and just tread a metal bolt in.

What you should do for the bottom end and piston is add a liquid lubrication system. An oil pump and filter to get the engine running smoother!

COOL VIBRATIONS

I’m surprised lego engines are able to survive this interesting

Bearings are amazing pieces of tech aye?

Try printing the friction parts with POM, wich is self lubricant. Also, make it hollow and super glue a solid PLA shaft inside the hollow POM main shaft tree for rigidity.

Hi ! Great video, I think you should try to make the engine rev more.

sick compressor bro

Now let's see a V4 like the Honda VFR 800 !

You could put the pressure valve on a separate line coming out of the copper tubing instead of having all the exhaust go through the valve to reduce power loss from excessive backpressure

Perhaps this could ultimately be powered by a pressure chamber that generates its pressure via mixing dry ice and water, or perhaps even liquid nitrogen and dry warm water. Then the system could be self powered. Air powered go kart?? 👀

1:33 oh hey I know a guy with that civic, loves to drive by at 2am

i said it in your other post, but maybe use some bearings of sorts. like a normal piston engine for the conrod. and bearings press fit onto the ends of the crank

Giving the crankshaft a counterweight that counterweights both the unbalance of the crankshaft and piston will also reduce the crankshaft flex.

We have finally found biggus disccus! We must tell him about the centurion!

Cool. You're a cool guy.

So... This may sound a bit weird but I've been 3d printing struts and I can get extra strength by designing them to be composite parts printed with different orientations, then combining them. Could you print your crankshaft in one orientation with hollows to insert three pins printed in a second orientation?

That dyno took way more effort and money than an arduino and a hall effect sensor would. Well, unless you're really bad at both programming and finding ready solutions online, then it's probably really hard.

you could have a small air port direct compressed air at the crankshaft for a cooling effect

I was subbed before that video woo remember me

Actually, PETG is not universally stronger than PLA. PLA is actually extremely stiff, but a bit less "tough." It's a little brittle, but for a crankshaft, where you're not taking impacts, the stiffness of basic PLA is going to be better. Actual crankshafts (and camshafts even more so) are hardened for this reason. Dropping a crank or a camshaft can be catastrophic because they're very hardened, and thus brittle. But in the rotational engine loads, that's ideal.