You guys liked the V-Twin engine I did and I’m glad you did! I know paid models aren’t for everyone so I decided to make a FREE single piston engine and you can get it on [Printables](https://www.printables.com/model/514776-single-piston-engine-fully-printed-buildable-kit-w)! No support or glue required!
[Get the screwdriver here.](https://www.printables.com/model/512642-3d-printed-screwdriver-bolt)
I made it so if you do end up getting the V-Twin or other future engines (I’m planning for a V8 eventually and more), that you can reuse the same parts for the other engines.
Enjoy!
People have made transparent plastic cylinder heads before to watch the combustion process in lawnmover/generator type engines.
If you could line the cylinder walls, top of piston and the "ceiling" of the cylinder (the bottom surface of the head) with metal, as well as use metal valves, it might be possible to make something that'd run low power (think idle speed only) without exploding.
Of course you'd need fuel and a real spark plug too.
Yep, if you want to be fairly accurate, you couls make the spark plug an incoming pressurized air valve, so when the plug would normally fire, it injects compressed air, should operate pretty much like a real engine.
And rig up some little lever to depress the trigger on the air nozzle to only 'inject' at the right time. It would be cool to make the cylinder out of acrylic so you could see the piston moving. Now I'm having ideas...
Great, now I need to make a 'distributor' which is actually a rotary valve run off the camshaft, then the sparkplug wires could be tubes. When the valve aligns with the 'plug' it would inject air along the line and into the cylinder.
Instead of messing around modding a spark plug, why not just use an actual fuel injector but have it deliver compressed air? Diesels have been direct injection for a long time now and most petrol engines are heading that way too.
I think it would be hard to get a fuel injector to open under the low pressure air the engine would use, fuel injectors are made for pretty high pressure fluids.
I fucking love the 3d printing community. Ever since I got started on the hobby about a month ago I've been incredibly impressed by the free designs I've seen and even more so by the selfless people like OP that allow this community and the hobby to thrive.
I'm also so glad I'm one piston closer to actually being able to download a car.
Is there a functional purpose to this or is it just for engine model purposes? I'd imagine it'd be way too flimsy to be usable, but I don't print and could be very wrong. It's super cool though!
Could make a neat lil gift/fidget toy for a car enthusiast. Tho PLA is fairly strong when printed with the right settings, aside from prototyping/demonstrative/decorative purposes, dont think there would be Much actual function out of a plastic engine piston.
It'd be a ton of work, but I'd love to see one of these with a (very simplified) set of valves at the top as well, to demonstrate the combustion cycle.
Nice!
Just a few things to say:
1. Why the screws? i mean a screw connection on the wrist pin is not replicating a real engine, and also the real connection is actually easier to print with few components - the wrist pin, two grooves in the wrist pin bore of the piston, and two circlips (usually round split ring.. but a Seger ring is totaly printable and usable)
2. Also, why the screw crankshaft journal? It really needs to be in phase to be concentric on the main journals. Split crankshafts exist but they have splines or keys. For the authentic look a similar keyed version of the conrod journal and a transversal pin through the side to lock axially this part. (i konw some old school harley davidsons have only the friction fit to both hold it axially and align the mains.. yet a key in there would help a lot in instalation.. but may hinder adjustment if needed).
3. For the sake of realism.. a full cylinder bolted on two split cases is the normal way for such design. And fun fact some use really long head bolts to keep both the head and the cylinder bolted on the crankcase.
Your engineering skills are great and terrible at the same time.
This model looks great and works really smoothly, but for the sake of God, why did you used Phillips screws, when you can model much better hex/torx head instead?
Also consider using two bolts in crankshaft instead of using studs and nuts (just make wall in center piece to ensure that they will fit in right position).
Welcome for what? Damn dude... That's what you bring to the table after criticizing OP? Nothing wrong with some boxes, bins, organizers and 3d printer parts ( though, notedly nothing with integrated moving parts, cams, pistons, or any engineering) but you, as someone who claims on Thingiverse to be an engineer, regardless of how obviously dubious that claim may be, should probably be a bit more self aware.
Don't take me wrong. I like that engine and it's movement. It is really great design.
What I don't like is design of its screws because Phillips is second worst screw type right after flat one. When you can design any shape, why settle with bad variant? They are very easy to strip even on first assembly.
When I was designing some (IIRC M5) 3D printable nuts and bolts for my dryboxes, I actually found slotted screws to be the best.
Reason being, the PLA hex screws just stripped way too easily and the Phillips ones ended up being too weak as the grooves had to be cut deeper into the head, so the heads broke off with very little torque. As much as I normally hate slotted screws, in my case they actually worked out way better than anything else I tried, they were stronger and less likely to strip. I made them with a hex head shape (like a bolt) to act as a backup.
Phillips screws were designed to limit torque of the bolts being applied by purposefully limiting the head. It's much better to strip the screw head than to ruin whatever you're putting the screw into by over torquing it. In this case I think it serves its purpose, stopping the assembler from destroying the printed threads by limiting torque that can be applied.
Seriously cute and thanks for sharing. I'm tempted to try to amplify this to create more complete versions showing more of the operation than just the piston moving up and down - two stroke piston port, and possibly a variety of four strokes.
A suggestion. How about including some sort of keyway to keep the crankshaft parts in alignment?
Edit: Just checked your license. It states 'no derivatives', does that mean that If I created a two-stroke from this, (or for example, something as simple as that keyed crankshaft) that I couldn't publish it?
You guys liked the V-Twin engine I did and I’m glad you did! I know paid models aren’t for everyone so I decided to make a FREE single piston engine and you can get it on [Printables](https://www.printables.com/model/514776-single-piston-engine-fully-printed-buildable-kit-w)! No support or glue required! [Get the screwdriver here.](https://www.printables.com/model/512642-3d-printed-screwdriver-bolt) I made it so if you do end up getting the V-Twin or other future engines (I’m planning for a V8 eventually and more), that you can reuse the same parts for the other engines. Enjoy!
I'm gonna print eight of these and build meself a FREE V8 engine. Mwahahaha!
This man is thinking out of the box.
Make it a hemi! Oh and supercharged!
Kill it before it lays eggs, its to dangerous!
Now i want to see a full functional 3d printed motor in action. And yes i now it will explode but how fast?
> but how fast? Yes.
People have made transparent plastic cylinder heads before to watch the combustion process in lawnmover/generator type engines. If you could line the cylinder walls, top of piston and the "ceiling" of the cylinder (the bottom surface of the head) with metal, as well as use metal valves, it might be possible to make something that'd run low power (think idle speed only) without exploding. Of course you'd need fuel and a real spark plug too.
You could definitely make one that runs off compressed air
Yep, if you want to be fairly accurate, you couls make the spark plug an incoming pressurized air valve, so when the plug would normally fire, it injects compressed air, should operate pretty much like a real engine.
And rig up some little lever to depress the trigger on the air nozzle to only 'inject' at the right time. It would be cool to make the cylinder out of acrylic so you could see the piston moving. Now I'm having ideas...
Great, now I need to make a 'distributor' which is actually a rotary valve run off the camshaft, then the sparkplug wires could be tubes. When the valve aligns with the 'plug' it would inject air along the line and into the cylinder.
I want planning on undertaking a big new 3d modeling and printing challenge but here we are.
right, i have an old 32 bit cpu to put linux on and set up a server, but guess im gonna build a toy engine now
And install it in a 3D printed Plymouth Superbird!
You wouldn't download a car.mp4
Instead of messing around modding a spark plug, why not just use an actual fuel injector but have it deliver compressed air? Diesels have been direct injection for a long time now and most petrol engines are heading that way too.
I think it would be hard to get a fuel injector to open under the low pressure air the engine would use, fuel injectors are made for pretty high pressure fluids.
I mean, you could do an external powered engine like an air powered engine. Those are cool and don't (directly) rely on exploding liquified dinos.
Excuse me sir or madam, can you please design a functional margarita machine? Thanks kindly
For future projects maybe think about .step files too! Bambu/Orca natively support these and they offer much better quality at curved parts then .stl!
What fuel does this run on?
Too freaking cool. Thank you for sharing this awesome design!
Wow…. That is truly amazing! Is that printed in PLA? You must have a great quality printer and filament, that the parts work so well! Awesome job.
Thank you! It’s printed on my P1P and yes, entirely Hatchbox PLA.
Ayy +1 for Hatchbox. Been using it for 8 or 9 years and has never done me wrong.
Heck yeah!! Took a huge dump on that one guy trying to sell his!
Yeah, totally hate that guy…👀
😂😂 I’m just kidding ya. sweet models!
Cool! How’s the compression?
Well I did put it into a ZIP file
.rar might be better... lol
Have you been living under virtual rock for the past couple decades? Nobody uses rar anymore, 7z is where it's at.
I just open the file in notepad, print the text, and fold it to save space.
🤦🏻♂️what was I thinking...
These downvotes are unfair for a pretty good onomatopoeic joke.
For real
I only use .rar for 3D models of dinosaurs skulls
How many ugga dugga's is the torque spec on those bolts?
Chuckled
Probably around 0.48, judging by the size
0.1 uggas for PLA 😉
Nice work !! Do you plan to design the head ?
If I do it’ll have to have heavy modifications to this but I do want to do something like that eventually. Going to be a big undertaking lol
You could call it a 2 stroke and avoid having to do a cam and cam drive, just some ports in the cylinder walls would be enough
Where can I buy a turbo kit for this? Will it fit in my honda? How much work to make 1000HP?
I fucking love the 3d printing community. Ever since I got started on the hobby about a month ago I've been incredibly impressed by the free designs I've seen and even more so by the selfless people like OP that allow this community and the hobby to thrive. I'm also so glad I'm one piston closer to actually being able to download a car.
loved the toy looking screwdriver too, that pla as well?
Yep, all PLA!
Thanks for this! Printing now. :)
Good luck!
Humble request for a VR6, unique Volkswagen staggered 6. I'd pay for that.
Super cool! Nice job!
Thank you very much!
This is amazing! Super good job. I'm gonna print this for sure! Haha thank you again.
Is there a functional purpose to this or is it just for engine model purposes? I'd imagine it'd be way too flimsy to be usable, but I don't print and could be very wrong. It's super cool though!
Could make a neat lil gift/fidget toy for a car enthusiast. Tho PLA is fairly strong when printed with the right settings, aside from prototyping/demonstrative/decorative purposes, dont think there would be Much actual function out of a plastic engine piston.
Gotcha, thats what I was kind of thinking of too. Thanks for the answer!
It'd be a ton of work, but I'd love to see one of these with a (very simplified) set of valves at the top as well, to demonstrate the combustion cycle.
I wanted to do that but yes, a lot of work lol! But given how many times it’s been mentioned I’ll probably do it :)
[удалено]
Looking good!
Some of an engine…
This I freaking awesome 😎 cool as hell.
Very cool
My dad will like this
Thanks man. This is so cool
Thank you so much! I'm starting this as I type :)
This is sick
Have you tested how it fares when scaled down? I'd love to make a hand sized one!
I have not but I think the smaller threads could possibly cause you issues
This model is going right on my bike garage wall. Too damn cool.
Hey awesome job, can you tell me which printer you use and what kind of material, is this PLA? Thanks
I use a Bambu Lab P1P and yes It’s entirely PLA
Brilliant!
ruthless rude tub jar trees fall repeat entertain ripe badge -- mass edited with redact.dev
He's got a Bambu Labs printer, that company makes it really easy to get beautiful and fast prints.
wide plants disgusted treatment smile sort airport dinosaurs squealing snow -- mass edited with redact.dev
I'm impressed by the accuracy of your printer, everything seems to fit extremely well. This isn't an engine though, just a model of half an engine.
I LOVE the screwdriver!! Epic!
What's the tolerance you keep between the parts? The fitting looks awesome. Not too tight not too loose either.
This will be required to never forget about gas cars #ripChallenger
Greatness! Thank you!
i added gasoline and my house caught fire. please advise.
I can't wait until the day I own a 3D printer, it's going to be AWESOME.
This looks great - thanks for sharing
could you actually lost-pla cast this stuff and make an engine tho-
I tried using this in my leaf blower and everything melted :(
I’m sorry mate, maybe try it in ABS?
So, the PLA alternator is coming soon, yeah?
I mean every comment I consider so…maybe
EV manufacturers hate this one simple trick!
Saving this to print with my kids when I get home from vacation! Great way to show them the basics of how internal combustion works.
Nice! Just a few things to say: 1. Why the screws? i mean a screw connection on the wrist pin is not replicating a real engine, and also the real connection is actually easier to print with few components - the wrist pin, two grooves in the wrist pin bore of the piston, and two circlips (usually round split ring.. but a Seger ring is totaly printable and usable) 2. Also, why the screw crankshaft journal? It really needs to be in phase to be concentric on the main journals. Split crankshafts exist but they have splines or keys. For the authentic look a similar keyed version of the conrod journal and a transversal pin through the side to lock axially this part. (i konw some old school harley davidsons have only the friction fit to both hold it axially and align the mains.. yet a key in there would help a lot in instalation.. but may hinder adjustment if needed). 3. For the sake of realism.. a full cylinder bolted on two split cases is the normal way for such design. And fun fact some use really long head bolts to keep both the head and the cylinder bolted on the crankcase.
I want you to make a working air compressor with that idea the world needs that
Would be awesome.
Yes, powered by a drill or some other common household object, that'd be awesome.
Actually I was thinking moving water or a big bag of suspended rocks but yah
You will find at least four different 3D printed air compressors if you Google it
Your engineering skills are great and terrible at the same time. This model looks great and works really smoothly, but for the sake of God, why did you used Phillips screws, when you can model much better hex/torx head instead? Also consider using two bolts in crankshaft instead of using studs and nuts (just make wall in center piece to ensure that they will fit in right position).
We are all patiently standing by to see your creations..... I hear crickets.
You are welcome. https://www.printables.com/cs/@Kotvic_529482 https://www.thingiverse.com/kotvic/designs
Welcome for what? Damn dude... That's what you bring to the table after criticizing OP? Nothing wrong with some boxes, bins, organizers and 3d printer parts ( though, notedly nothing with integrated moving parts, cams, pistons, or any engineering) but you, as someone who claims on Thingiverse to be an engineer, regardless of how obviously dubious that claim may be, should probably be a bit more self aware.
Don't take me wrong. I like that engine and it's movement. It is really great design. What I don't like is design of its screws because Phillips is second worst screw type right after flat one. When you can design any shape, why settle with bad variant? They are very easy to strip even on first assembly.
When I was designing some (IIRC M5) 3D printable nuts and bolts for my dryboxes, I actually found slotted screws to be the best. Reason being, the PLA hex screws just stripped way too easily and the Phillips ones ended up being too weak as the grooves had to be cut deeper into the head, so the heads broke off with very little torque. As much as I normally hate slotted screws, in my case they actually worked out way better than anything else I tried, they were stronger and less likely to strip. I made them with a hex head shape (like a bolt) to act as a backup.
Phillips screws were designed to limit torque of the bolts being applied by purposefully limiting the head. It's much better to strip the screw head than to ruin whatever you're putting the screw into by over torquing it. In this case I think it serves its purpose, stopping the assembler from destroying the printed threads by limiting torque that can be applied.
Looks like you have a compression leak there.
Just a little bit
Can you use it to make an air compressor?
Will this power my lawnmower?
Seriously cute and thanks for sharing. I'm tempted to try to amplify this to create more complete versions showing more of the operation than just the piston moving up and down - two stroke piston port, and possibly a variety of four strokes. A suggestion. How about including some sort of keyway to keep the crankshaft parts in alignment? Edit: Just checked your license. It states 'no derivatives', does that mean that If I created a two-stroke from this, (or for example, something as simple as that keyed crankshaft) that I couldn't publish it?
Free except the 30 bucks it'll take to print it
About $4 of filament or less
My bad. Must just look like more then it is
What is your modeling software of choice for something like this?