The flywheel could also be used to help get it started. But given that it barely has any torque, I'm wondering if it would at least sustain the flywheel.
When 1mm is the difference between an engine running and not running: 3:27 Timestamps: 0:00 Introduction 0:07 The Housing 0:42 The Rotor 1:58 Outer Casings 2:38 The Eccentric Shaft 3:42 Assembling the Engine 4:09 Troubleshooting 5:45 The Final Product 6:59 Outtakes and Endscreen NOTE: I do not take credit for any of Akiyuki's original ideas, I was simply inspired by his works and wanted to create an actually working engine. Akiyuki's original video: th-cam.com/video/WnrrxUuZl4c/w-d-xo.html
Pneumatic engines are insane! I really like them and built a lpe powered car. But this is awesome! It doesn't run perfectly, but it runs! Wow!!! Felix wankel would like your model!
I’d love to see the design perfected a little bit more. Very cool to see a rotary in Lego! I’d also love to see another rotor added. It may help elevate some of that wobbling
I think there are multiple ways to improve torque on the engine, so I will list some: 1. Adding another rotary. 2. Adding a pro/supercharger. 3. Improving the rotor to maybe have 5 compression areas instead of the 3
Good ideas. I think the main problem with this engine is that because the peanut shape housing isn't perfect, the air leaks into the other chambers and overall the housing is not sealed well. This is something that is hard to achieve with LEGO but I think a second rotor may help.
@@laudo_au2418 I'm not an expert by any means, but I heard that they're good to burn fuel more efficiently. I guess it could work since you're driving more air into an air powered engine, but there's probably someone more educated on this platform that can answer you better.
@@laudo_au2418 Technically yeah, but when you’re already using pressurized air to power it, it makes no difference. It isn’t a combustion engine sucking air in. So it technically already has boost like a supercharger or turbo would provide for a IC engine. So in this case just upping the air pressure would be sufficient. However as the creator has mentioned, the housing isn’t perfect. It has too many leaks and isn’t shaped quite right.
Your first solution after the mechanical issues should have been lubrication, you would be surprised how much of a difference it makes. Was the tape really necessary? Injection modded ABS should be pretty smooth.
If you added another rotor and made it offcentered to the other one it would’ve require more sore but I bet it would spin faster also that would be amazing to watch
Properly engineered, with no fear of doing what's necessary: like changing the quantum/grid size of the Lego geometry😅 and contaminating LEGO with foreign substances.
Has anyone heard of the LiquidPiston engine? Like a wankel inside out, still a planar rotary shape. No torque = air pressure is constantly applied, not a timed valve. This provides kick-back torque. Adding inlet timing and a flywheel will *substantially* increase performance.
Besides the transparent cover and circular credit card cut-out it is 100% LEGO. However some of the LEGO parts were, of course, cut and modified. For a Wankel engine, the geometry of it needs to be extremely precise, so modifying the LEGO parts was the easiest way.
You added that little pipe to make an air go through it instead of compressing. But, what you didn't noticed is that the piston blocks an air from going into a pipe.
As the rotor pushes air through the pipe, the rotor also blocks the air from moving. Since the air has nowhere to go, it has no choice but to actually push the rotor, which (in theory) would boost the engine performance. However, the boost of this is minimal since it is LEGO, and I could not achieve perfectly airtight shapes and geometry.
LOL @ all the people butthurt about the tape and cutting. The task was to figure out what it would take to make a LEGO model of a Wankel engine actually work... and that's what it takes because otherwise it's not possible given the geometry of LEGO pieces and the geometric requirements of a Wankel engine. How hard is that to comprehend?
It's a nice model, and interesting too, but it's not a LEGO model when you have to use modified parts, foreign materials, and glue to make it work. If you're going to go to that much trouble you may as well 3D print the whole thing.
This is not a "lego rotary engine". It uses glue, cut parts, glass/transparent plastic etc. Its a tremendously cool build! Just please do not call it lego when it is not.
@marcosstables exactly! "Mostly". It's rather easy to build a frame that looks like the outline of a wankel engine out of Lego. It's much harder to create a functioning, somewhat airtight construction that resembles the functionality of a wankel engine out of Lego.
@@ThePentti The base is still Lego so it still counts as Lego. The other things are just to make it run better (like glue and other lubrications) and he didn’t need the transparent plastic, he could have used Lego but then you wouldn’t have of seen the rotors. So I would still call it a Lego Wankel engine.
Doesn’t work great because, inlet is placed wrong, there’s no outlet, the housing has a wrong shape, it’s actually more pear shaped, apex seals don’t seal, they need pressure against the wall, also there’s no way you can create the right seal using legos against the side walls.
I am aware of the poor housing shape, but with LEGO you cannot build that precise. Unless I 3d printed it or built at a much larger scale, creating perfect geometry with LEGO is almost impossible.
I feel like it could run a lot easier with less lubrication with a fly wheel
Or maybe another rotor for less vibrations
i cant tell if this thread is meant to be 'dirty' or not
@@leopinty5103 Bruh
@@leopinty5103 it’s not..
The flywheel could also be used to help get it started. But given that it barely has any torque, I'm wondering if it would at least sustain the flywheel.
mmmmmmmm now i wish it could be build with official parts
It is lol
@@Jackcook27 it’s not some pice is cut and that thing to make shorter
@@Jackcook27 ah yes, my favourite lego pieces: card, tape and pencil lead.
I know but sadly not even a Lego pipes/tubes even hold in air none of the less create pressure
@@alexanderwheatley2500same bro always gotta use the tape pencil led and cards
This man out here using forbidden lego tech
As I’ve said before, this is an even *more* huge of a milestone!
Keep up the great work! :D
You may have committed war crimes in this video but I respect it nonetheless.
the amount of effort put into this is amazing its purely amazing worth not getting vids for a while
"worth not getting Vids for a while" what does that mean?
@@Dark-zw6ssHe means that the quality of the videos are so good that he can wait if they take a bit longer to make.
Good job man, glad you stuck at it, Was worth the wait!
Thanks, I am happy with the final result too :)
When 1mm is the difference between an engine running and not running: 3:27
Timestamps:
0:00 Introduction
0:07 The Housing
0:42 The Rotor
1:58 Outer Casings
2:38 The Eccentric Shaft
3:42 Assembling the Engine
4:09 Troubleshooting
5:45 The Final Product
6:59 Outtakes and Endscreen
NOTE: I do not take credit for any of Akiyuki's original ideas, I was simply inspired by his works and wanted to create an actually working engine.
Akiyuki's original video: th-cam.com/video/WnrrxUuZl4c/w-d-xo.html
Really proves how clearance makes the biggest of differences!
Really crazy and probably really frustrating
hey a rotary is a rotary lego or not😂
so no wonder those apex sealings keep breaking, its hard as stone, cracks too easily
Can you make 2 rotor ?
I was going to hate on this engine until I realized it's air powered. Didn't think that something like this would work. Pretty cool!
It looks so cool and it also sounds like a rotary engine
Now it's time to build an RX7
Pneumatic engines are insane! I really like them and built a lpe powered car. But this is awesome! It doesn't run perfectly, but it runs! Wow!!! Felix wankel would like your model!
Thank you!
Pretty cool and I'm glad you admitted the no torque thing. It doesn't matter it's still cool as hell.
bro, I searched for this few years ago when I was much younger, and no one made it, you literaly made my dream
That's awesome. I myself made a mini rotary engine for small models, even posted a video of it working in slow motion. Keep up the great work!
Thank you!
Me: sees video, "cool!"
Me: watches cutting and gluing of lego pieces.
Also Me: So this is what pain is like...
I’d love to see the design perfected a little bit more. Very cool to see a rotary in Lego! I’d also love to see another rotor added. It may help elevate some of that wobbling
I think there are multiple ways to improve torque on the engine, so I will list some:
1. Adding another rotary.
2. Adding a pro/supercharger.
3. Improving the rotor to maybe have 5 compression areas instead of the 3
Good ideas. I think the main problem with this engine is that because the peanut shape housing isn't perfect, the air leaks into the other chambers and overall the housing is not sealed well. This is something that is hard to achieve with LEGO but I think a second rotor may help.
Supercharger won’t help. It’s a pneumatic engine not a combustion engine.
@@Enthusiastlist So a supercharger would work then? More air = more rpm, no?
@@laudo_au2418 I'm not an expert by any means, but I heard that they're good to burn fuel more efficiently. I guess it could work since you're driving more air into an air powered engine, but there's probably someone more educated on this platform that can answer you better.
@@laudo_au2418 Technically yeah, but when you’re already using pressurized air to power it, it makes no difference. It isn’t a combustion engine sucking air in. So it technically already has boost like a supercharger or turbo would provide for a IC engine. So in this case just upping the air pressure would be sufficient. However as the creator has mentioned, the housing isn’t perfect. It has too many leaks and isn’t shaped quite right.
I remember my dad who's an engineer telling about the Wankel engine and finding it very difficult not to start laughing
Btw pencil lead isn't pure graphite, it contains clay so it stays in shape, it might grind your parts a little bigger.
Yikes, I felt the pain when you've snipped that track piece...
Add a counter weight to reduce vibration and a flywheel should make the pulses of the rotary more smooth
Nice 👍🏾 really cool. I thought you stopped working on it, but seeing all the steps you had to take, i understand now!
I love how you have a Solution for every problem that comes up!
very cool improvement on Akiyuki's design
If you’re up for the challenge, and you have enough pieces, you should try to make a 2 rotor version
Your first solution after the mechanical issues should have been lubrication, you would be surprised how much of a difference it makes. Was the tape really necessary? Injection modded ABS should be pretty smooth.
I always loved the rotary engine but a Lego one is insane
Very cool and impressive to be able to reach so many rpm with air pump
Well done 👍
Seen the word wank and I had to click and wasn't disappointed at all 💯👍🔥
Wow! This is impressive. I've got some work to do....
If you added another rotor and made it offcentered to the other one it would’ve require more sore but I bet it would spin faster also that would be amazing to watch
MY MANS DID IT HOLY MOSES
Properly engineered, with no fear of doing what's necessary: like changing the quantum/grid size of the Lego geometry😅 and contaminating LEGO with foreign substances.
Keep it up bro mad how you’ve built a rotary out of Lego
cool video man! I liked it, this is very good for a first time.
red thats so much work! you even cut the lego pieces my hats off to you you are on a level with or more than sariel
you can add a counterweight or/and a flywheel to make the poweroutput smoother and not jump around as much
Impressive. Probably the only one of its kind
This is sick!! loved the jump cut to step 6 it made me laugh haha
Cool build!
Has anyone heard of the LiquidPiston engine? Like a wankel inside out, still a planar rotary shape.
No torque = air pressure is constantly applied, not a timed valve. This provides kick-back torque. Adding inlet timing and a flywheel will *substantially* increase performance.
Ive never seen a more illegal lego build in my life lol
this is really cool
but… glue, cutting, tape, non lego parts?
surely you could have found a better way
Besides the transparent cover and circular credit card cut-out it is 100% LEGO. However some of the LEGO parts were, of course, cut and modified. For a Wankel engine, the geometry of it needs to be extremely precise, so modifying the LEGO parts was the easiest way.
GLUE.
FUCKING GLUE!
ON LEGO.
sick, downright sick.
This is so cool
mazda after seeing this video: you're hired. 😂
just so impressive
I understand the need to modify the pieces to get the necessary geometry, but it still hurt to watch
I'll get right to watching the video after I'm done snickering about the word "wankel."
Man clipped the track pieces but there is a piece for that
That is amazing man
Runs better than my Wenkel 13B
You are need a million subscribers,i wish will you to popular
feel like it would work better with a fly wheel to keep it going after it starts
I liked the concept of it all except the amount of drilling and superglue used
Mmm yes the beloved BRAP BRAP BRAP BRAP of the Mazda rx7
True to the real one as reliability goes
I credit Lego, at least partly, for my mechanical aptitude as well as my interest in building things.
Lego builders after learning science Just to make teir build more realstic
very cool !
THIS is next level Lego building.
But why did you use these graphit bars, and not other material?
Anyways, very cool build
We are one step closer to creating a lego rocket
Oooooooffff cutting and gluing pieces hurts so much. But still great work
Bro whipped out the kragle multiple times 💀💀💀
Edit: worth
You didn't even edit the comment
Look at that Dorito go
Ryosuke and Keisuke Takahashi approved
Awesome!!
You could defitely power a Lego city with this lol
it works pretty well. Kinda bums me out how much it had to be modified.
Holly molly!😮
I think you might get more RPM if the engine was more secured? less energy lost to moving around?
cool vid
My eyes start bleeding when someone glues Legos or cut them
cutting lego pieces was very painful to watch but cool design!
You added that little pipe to make an air go through it instead of compressing. But, what you didn't noticed is that the piston blocks an air from going into a pipe.
As the rotor pushes air through the pipe, the rotor also blocks the air from moving. Since the air has nowhere to go, it has no choice but to actually push the rotor, which (in theory) would boost the engine performance. However, the boost of this is minimal since it is LEGO, and I could not achieve perfectly airtight shapes and geometry.
Very cool🤘. Think about making V2 engine for a bigger car, worth it?
LOL @ all the people butthurt about the tape and cutting. The task was to figure out what it would take to make a LEGO model of a Wankel engine actually work... and that's what it takes because otherwise it's not possible given the geometry of LEGO pieces and the geometric requirements of a Wankel engine. How hard is that to comprehend?
It's a nice model, and interesting too, but it's not a LEGO model when you have to use modified parts, foreign materials, and glue to make it work. If you're going to go to that much trouble you may as well 3D print the whole thing.
Man really wasted a credit card for a LEGO project
Brapbrapbrapbrap 🤩
Congratulations your engineer, even if there just Legos😂
You You should make a dual motor rotary engine cause it is smoother and has less vibration
What's the point of the gasket if the apex seals don't seal at all?
This is not a "lego rotary engine". It uses glue, cut parts, glass/transparent plastic etc. Its a tremendously cool build! Just please do not call it lego when it is not.
It mainly uses Lego 🤦♂️
@marcosstables exactly! "Mostly".
It's rather easy to build a frame that looks like the outline of a wankel engine out of Lego.
It's much harder to create a functioning, somewhat airtight construction that resembles the functionality of a wankel engine out of Lego.
@@ThePentti The base is still Lego so it still counts as Lego. The other things are just to make it run better (like glue and other lubrications) and he didn’t need the transparent plastic, he could have used Lego but then you wouldn’t have of seen the rotors. So I would still call it a Lego Wankel engine.
NICE DORITOS
There was no warning that you are going to CUT and GLUE LEGOs? Herecy!
3:34 that's what she said
RX-7: BRAP BRAP BRAP BRAP BRAP
They gonna see you rolling in a lego car soon.
Doesn’t work great because, inlet is placed wrong, there’s no outlet, the housing has a wrong shape, it’s actually more pear shaped, apex seals don’t seal, they need pressure against the wall, also there’s no way you can create the right seal using legos against the side walls.
I am aware of the poor housing shape, but with LEGO you cannot build that precise. Unless I 3d printed it or built at a much larger scale, creating perfect geometry with LEGO is almost impossible.
nice
Try making a pneumatic motor like a impact guns rotor motor. But without the hammers
wouldn't a counter weight reduce the vibration?
Rx7 brap. Brap brab 😂
GLUE?!
it would probably run a little bit smoother if you put some kind of flywheel on it
you could make et go faster by screwing it to the table because some off the energy is going to make the engine vibrateing
All we need is a real sized rx7 and fit this in
you need a counter weight