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Life-Sized, Drivable 500,000 Piece Lego Car Runs On Air

samzenpus posted about 10 months ago | from the toy-car dept.

Toys 73

cartechboy writes "Two guys have made a life-sized Lego car that runs on air. That's right, the 256-piston, air-powered Lego working vehicle built with half a million black and yellow Lego pieces can actually be driven up to 18 mph. It was designed and built by 20-year-old Romanian Raul Oaida in 20 months after he and his partner, Australia-based Steve Sammartino raised "tens of thousands" of crowdfunded dollars with their prospectus entitled quite simply: "Super Awesome Micro Project." The car was built in Romania and then moved to Melbourne, Australia (presumably not brick-by-brick.) In the video, the only visible non-Lego components are the gauges, wheel rims, and tires (though the wheels have Lego faces--literally.)"

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Runs on hot air (2)

buchner.johannes (1139593) | about 10 months ago | (#45742423)

I don't understand -- how does it drive?

Re:Runs on hot air (0)

Ol Biscuitbarrel (1859702) | about 10 months ago | (#45742607)

My guess is it's a bumpy ride.

Gleeming alloy aircar... (1)

Anonymous Coward | about 10 months ago | (#45742625)

...two lanes wide.

All you gotta do is find a one-lane bridge to lose him while driving your red Barchetta.

Re:Gleeming alloy aircar... (0)

Anonymous Coward | about 10 months ago | (#45746181)

nice

Re:Gleeming alloy aircar... (1)

Crudely_Indecent (739699) | about 10 months ago | (#45747597)

And an uncle with a red Barchetta [wikipedia.org]

Re:Runs on hot air (2)

gl4ss (559668) | about 10 months ago | (#45742843)

compressed air.
you know, like how pneumatic air driven tools work.

it's not quite optimal power storage medium though, but easy to turn into motion.

Re:Runs on hot air (1)

Lennie (16154) | about 10 months ago | (#45744107)

You build some pretty good cars with that (video from a couple of years ago):
https://www.youtube.com/watch?v=OJeMnZuOOJU [youtube.com]

Looks to me like Peugeot might bring a hybrid in production:
http://www.dailymail.co.uk/news/article-2266632/Car-runs-air-coming-soon-Peugeot-Citroen-unveil-new-117mpg-hybrid.html [dailymail.co.uk]

(this also makes fun of hydrogen powered cars because with hydrogen powered cars 'fuel' also needs to be compressed very much, so a lot of energy is lost to transfer hydrogen into a car. So why not use that energy directly ?)

Re:Runs on hot air (1)

Opportunist (166417) | about 10 months ago | (#45744703)

Oblig: Election promises.

What's the point? (0, Troll)

Anonymous Coward | about 10 months ago | (#45742441)

The frame isn't legos, it's just a normal metal frame with a lego body, whooptey doo.

Re:What's the point? (2)

Frosty Piss (770223) | about 10 months ago | (#45742453)

The frame isn't legos, it's just a normal metal frame with a lego body, whooptey doo.

And the power plant and train are "whooptey doo" as well? No wonder you posted under AC.

Re:What's the point? (0)

Anonymous Coward | about 10 months ago | (#45743043)

And the power plant and train are "whooptey doo" as well?

I don't see any mention in any of the links about a lego power plant or a lego train. But if all they consist of is lego forming the outer body of each, then yes, "whooptey doo".

Don't get me wrong, I do think it looks cool. But I was rather disappointed to learn what parts were not made out of lego.

Re:What's the point? (2)

Zynder (2773551) | about 10 months ago | (#45743233)

RTFS. It says right there it has a 256 piston air powered engine. Do you know of any ICE that 256 pistons? Not I.

Re:What's the point? (2)

TubeSteak (669689) | about 10 months ago | (#45744083)

Do you know of any ICE that 256 pistons? Not I.

The Soviets supposedly stuck together two 56 cylinder radial engines for use on military ships. 112 cylinders total.
Of course, it's not something you could put in a car. Or a big rig... maybe a train.
But you can find 42~56 cylinder radials that are leftover from the (post) WWII era.

Nobody really builds high-cylinder count motors anymore, they just increase displacement.
At the most extreme end, you have the world's largest engine with 14 cylinders, each displacing 1,820 liters.
Oh, and it's turbocharged, because more air is an effective substitute for more displacement.

Re:What's the point? (2)

Spy Handler (822350) | about 10 months ago | (#45742457)

and the tires aren't legos, and the gauges, and the steering wheel, etc.... so what? The point is, if you like Legos, then this is cool. People build cool things.

Re:What's the point? (0)

norite (552330) | about 10 months ago | (#45742649)

and the tires aren't lego, and the gauges, and the steering wheel, etc.... so what? The point is, if you like Lego, then this is cool. People build cool things.

FTFY :0)

Re:What's the point? (0)

Anonymous Coward | about 10 months ago | (#45742805)

and the tyres aren't lego, and the gauges, and the steering wheel, etc.... so what? The point is, if you like Lego, then this is cool. People build cool things.

FTFY :0)

Re:What's the point? (0)

Anonymous Coward | about 10 months ago | (#45742815)

and the tyres aren't lego, and the gauges, and the steering wheel, etc.... so what? The point is, if you like Lego, then this is cool. People build cool things. FTFTFY :0)

FTFY

Re:What's the point? (1)

fisted (2295862) | about 10 months ago | (#45742807)

and the tires aren't LEGO, and the gauges, and the steering wheel, etc.... so what? The point is, if you like LEGO, then this is cool. People build cool things.

FTFTFY :0)

Re:What's the point? (0)

Anonymous Coward | about 10 months ago | (#45743029)

For god's sake this. Will Americans PLEASE learn to call lego LEGO. No-one else in the entire fucking world uses the plural.

PLEASE.

STOP.

Re:What's the point? (0)

Anonymous Coward | about 10 months ago | (#45743161)

Pants.

Scissors.

Legos.

Deal with it.

Re:What's the point? (1)

marka63 (1237718) | about 10 months ago | (#45743293)

Sheep.

Fish.

Bacteria.

Not all plurals end in 's'.

Re: What's the point? (0)

Anonymous Coward | about 10 months ago | (#45743353)

Rocks
Spocks

Deal with it

Re:What's the point? (1, Interesting)

gl4ss (559668) | about 10 months ago | (#45743275)

what the fuck? sure we do.

Kun minà olin nuori poika me leikimme legoilla, meillà oli paljon legoja ja joskus legoista jopa tapeltiin(When I was a young boy we played with legos, we had lots of legos and sometimes we even fought over the legos we had). basically only if you want to follow the Lego trademark rules you will always use the word Lego in it's Lego form. but speaking like that gets pretty stupid, since then you have to start doing it like " we built lots of things from Lego bricks" instead of just saying "out of legos" - kids don't speak like that and adults shouldn't speak like that either. so are you the Lego companys lawyers bitch, doing what the MAN asks you?

anyhow, the cool part about this is the 256 piston compressed air->motion engine..

Re:What's the point? (1)

wisdom_brewing (557753) | about 10 months ago | (#45744739)

"We built lots of things from Lego" - was that hard?

Re: What's the point? (1)

xero314 (722674) | about 10 months ago | (#45745901)

You can't build from Lego. Lego is a brand name of building blocks. Sothe correct phrase according to the Lego trademark holder would be "we built lots of things from Lego brand building blocks." Your usage, even in the singular form, makes it a generic use which risks diminishing the value of the trade mark.

Re: What's the point? (1)

Xrikcus (207545) | about 10 months ago | (#45747061)

That is a quirk of American trademarks that you don't see so much in other countries. It has always seemed strange to see "x brand y" used everywhere in the US. Understandable for the reason you point out, but not natural to non-Americans.

Re: What's the point? (0)

Anonymous Coward | about 10 months ago | (#45750361)

Growing up in England, and as a devout Lego enthusiast, we never pluralized Lego. It's not like I had even heard of trademarks at that point. That just wasn't the lingo.

Re:What's the point? (2)

mcgrew (92797) | about 10 months ago | (#45747211)

You pompous British git, Legos are Danish, not British. The plural of Lego is legoklodser. Now, Legos are a recent thing, what rule of the English language do you think says that the plural of lego is lego? What's he plural of tomato? Potato? Tornado? Frito? Cheeto?

Sheesh...

Re:What's the point? (1)

Chuffpole (765597) | about 10 months ago | (#45755097)

The rest of the world (it does exist) treats Lego as a collective noun.

Hey America, kindly take the S from Legos and put it on the end of Math.

Thanks.

Re:What's the point? (0)

Anonymous Coward | about 10 months ago | (#45770219)

And what's the plural of sheep? It isn't like lego would be unique in have the singular and plural forms be identical.

I realise that the examples you chose all end in 'o', but I can't be bothered to look to see if there is another english word ending in 'o' that doesn't change for the plural form, simply because it doesn't matter, there are so many different rules and exceptions to them that one more doesn't matter.

Re:What's the point? (0)

Anonymous Coward | about 10 months ago | (#45743207)

It must have a metal frame hidden somewhere, you could not sit on it without breaking it.

Re: Whats the point (0)

Anonymous Coward | about 10 months ago | (#45745681)

actually if built correctly you can ... enough flats can be used to make an incredibly strong structure if they are in the right pattern.

Re:What's the point? (4, Funny)

lxs (131946) | about 10 months ago | (#45743767)

Anonymous Cowards see him rolling.. They hating.

Re:What's the point? (2)

Dishwasha (125561) | about 10 months ago | (#45744771)

Can't you see they're white and nerdy?

This rumbling in the distance? (5, Funny)

bob_super (3391281) | about 10 months ago | (#45742461)

Yep, that's the roar of US car dealers running to their layers and politicians to get a ban on Lego stores...

Re:This rumbling in the distance? (0)

Anonymous Coward | about 10 months ago | (#45743389)

...lairs... sorry

Re:This rumbling in the distance? (1)

bob_super (3391281) | about 10 months ago | (#45743497)

lawyers, but lairs would have been good too.

Re:This rumbling in the distance? (2)

VortexCortex (1117377) | about 10 months ago | (#45743603)

Car dealers? What about the IIHS - Insurance Institute for Highway Safety?
Just imagine the accidents!

-- No, I mean the post-collision Frankensteinian reconstructions after the instruction manual has been lost!

Re:This rumbling in the distance? (1)

MachineShedFred (621896) | about 10 months ago | (#45745095)

Honestly, I'm imagining the accident right now - that thing gets T-boned by a car going 40, and half a million Lego flying all over the place.

What a fantastic mess!

Re:This rumbling in the distance? (0)

Anonymous Coward | about 10 months ago | (#45748085)

Honestly, I'm imagining the accident right now - that thing gets T-boned by a car going 40, and half a million Lego flying all over the place.

What a fantastic mess!

And just think of all the secondary injuries to any barefooted people who rushed in to help!

Re:This rumbling in the distance? (1)

ImprovOmega (744717) | about 10 months ago | (#45748247)

Great, thanks for ruining the next episode of CSI...

"It's a two car collision, where's the other car?"

"No sign of it anywhere, just a mess of Lego bricks..."

Tune in Wednesday to see the mystery unfold!

Getting old :( (0)

Anonymous Coward | about 10 months ago | (#45742493)

25 years ago this guy would've been my hero.

Re:Getting old :( (0)

Anonymous Coward | about 10 months ago | (#45742637)

Got an old uncle with a little red Italian sports car stashed in his barn?

Eco-friendly? (5, Insightful)

countach (534280) | about 10 months ago | (#45742509)

The prospectus says he is building something eco-friendly. Is it really eco-friendly to build a car from 500,000 individual pieces, shipped from Denmark, one that has zero practical use, then ship it from Romania to Melbourne? And is the power efficiency of using electricity to fill an air tank and then power 256 plastic pistons really power efficient?

Cool, yes. Eco-friendly? Nope.

Re:Eco-friendly? (2)

Mr D from 63 (3395377) | about 10 months ago | (#45742583)

Compressed air energy storage compression & re-use is very inefficient.

Re:Eco-friendly? (1, Flamebait)

Slagothor (1156549) | about 10 months ago | (#45742669)

Gee 3P0, I'm glad you're hear to tell us these things. Chewie, take the professor here and plug him into the back.

Re:Eco-friendly? (0)

Anonymous Coward | about 10 months ago | (#45742883)

Why are you hassling the only (so far) post that is actually informative? Yes a lot of us know that compressed air is an extremely efficient form of energy storage but equally a lot do not. Why aren't u hassling the FTFY bellends instead?

Re:Eco-friendly? (0)

Anonymous Coward | about 10 months ago | (#45742899)

Because he said it's INefficient. Clearly they haven't heard of energy bags.

http://www.youtube.com/playlist?list=PL49FAD4E1788AE0C6 [youtube.com]

Re:Eco-friendly? (1)

gl4ss (559668) | about 10 months ago | (#45743837)

it just depends on what you think of as efficient.

if size of storage and weight of stored medium is no problem then I suppose yeah, efficient to some degree...

Re:Eco-friendly? (1)

noh8rz10 (2716597) | about 10 months ago | (#45744715)

the problem is in the rate of fill and discharge. if you want to fill the tank at any reasonable speed, and get enough air out for any reasonable power, then you start incurring huge thermodynamic losses. put more generally, fuel economy goes down as power goes up.

Re:Eco-friendly? (0)

Anonymous Coward | about 10 months ago | (#45746469)

Efficiency isn't some vague term open for interpretation. For energy storage, it is strictly energy delivered divided by energy stored and energy expended during charging the store. For compressed air energy storage, that'd be / . That's it. No weight and size considerations are involved. Just output over input.

The seat (1)

memnock (466995) | about 10 months ago | (#45742761)

can NOT be comfortable on that thing. Imagine all the little lego impressions on your bum.

Still, that's a pretty nifty project, imho.

Re:The seat (1)

Zynder (2773551) | about 10 months ago | (#45743271)

Maybe it ends up being like those wooden bead car seat covers. At first glance they appear horribly uncomfortable but, at least in my case, I don't even notice it after 10 mins.

Re:The seat (0)

Anonymous Coward | about 10 months ago | (#45743295)

Maybe it ends up being like those wooden bead car seat covers. At first glance they appear horribly uncomfortable but, at least in my case, I don't even notice it after 10 mins.

So they're just like anal beads then.

Super Awesome... (1)

Sechr Nibw (1278786) | about 10 months ago | (#45742813)

Am I the only one that thought it said "Super Awesome Mario Project", and was confused by the yellow/black theme? Maybe if it had been white/black, it could've been codenamed "Bullet Bill".

Fake? (5, Interesting)

Anonymous Coward | about 10 months ago | (#45742901)

I have looked at the video over and over, but it fails to reveal details of the engine construction. As an engineer I do know a thing or two about machinery and I do see some warning signs.

1: valve control
The car uses double acting pistons. Somewhere there is valve controls to turn the pressure on and off in the hoses. These controllers aren't visible.

2: pipe thickness
The pipes are constantly pressurized and depressurized. A lot of air goes into them each time the pipe is pressurized. Because the air pipes have such a small internal diameter and are pretty long, I'm concerned that there simply isn't time to pressurize pipes and pistons to go the speed they claim to go. Getting rid of the pressure on the other side of the pistons is also an issue as it has to escape though similar long and thin pipes.

3: crankshaft
There should be some crankshaft, but it isn't visible. That alone isn't a problem, but seeing it would be nice. It's a high torque part which makes it a critical part. Also somehow all the torque is joined into a single shaft and I really wonder how that could be done in lego.

4: rotating "rod"
There is a rotating rod between the seats. Supposedly it contains the entire power transmission between engine and wheels. Let's assume the lego blocks can handle this (I don't know if they can), then how is the bearings for a square bar made? The torque in that part alone makes me a bit suspicious to lego bearings.

5: smooth ride
The engine shows an amazing smooth ride. Given that the engine can start from a dead stop it is likely adding air until the piston has to move the other way. This causes vibrations as there is no brake on the piston. It accelerates and then it hits the end. Avoiding this is quite tricky as it involves RPM controlled valve control. I would love to see a lego valve controller, which takes engine RPM into consideration.

6: general lack of technical details other than what the video shows

Real world engineers solved 1+2 on steam locomotives by casting cylinder and valve into one block meaning the "pipe" which is pressurized and depressurized each time is much shorter than say a finger. It's nowhere the length of this setup. I would have expected a similar setup where the valve controls are placed right at the pistons and controlled by engine rotation. Granted that would make reverse a bit hard to implement, but it would work when going forward and the air usage would be much lower as the left over pressure in the pipes is let out each time the valve shuts.

All in all I can't put my finger on something specific and say for sure that it is fake, but somehow I don't trust the mechanical parts in it. However it is really impressive to build something of that size out of lego. I don't question if they built the car itself (maybe I should), I just question if the engine works.

Re:Fake? (-1)

Anonymous Coward | about 10 months ago | (#45742991)

> All in all I can't put my finger on something specific and say for sure that it is fake, but somehow I don't trust the mechanical parts in it. However it is really impressive to build something of that size out of lego. I don't question if they built the car itself (maybe I should), I just question if the engine works.

I just question why you are such a goddamned flaming faggot. PLENTY of stuff in this car is not lego... we all know that. Why you thought you were being somehow insightful by going into a detailed list, as if we were not aware of these things, is assholery as practiced at it's highest levels.

Re:Fake? (1)

Ksevio (865461) | about 10 months ago | (#45743057)

Presumably there are lots of non-lego parts. I really doubt he could build an air tank out of legos. I am a little interested in if lots of smaller components could be used to make it smoother or if that would cause other pressure issues. Obviously it would be more parts that could break, but it might have benefits.

Re:Fake? (3, Insightful)

Areyoukiddingme (1289470) | about 10 months ago | (#45743435)

An air tank out of LEGO isn't entirely out of the question. I think it's rather blindingly obvious that the parts for this thing have been glued together. ABS is fairly tough stuff, and the glue basically fuses bricks together, so making an air tight compartment isn't out of the question. It's not going to be a high pressure tank, but they made no claims about exactly how far this thing can roll on one tank of air. I'm betting not very far.

I think the guy you responded to also discounted the possibility of glue. I really don't see it hanging together without glued parts. With glued parts, I think the whole thing really could be LEGO elements (aside from the wheels, tires, and gauges).

Re:Fake? (1)

Neil Boekend (1854906) | about 10 months ago | (#45743819)

+GeorgFischer+ even advises ABS tubes in a lot of chemical applications. Basically: if it gets below freezing you want ABS because most other plastics have the tendency to break easily in cold. The glued tubes can withstand up to 16 bars.
LEGO bricks are not designed to withstand pressure, so the maximum is probably lower. I'd advise a few tests with low volume containers first, to test the strength of the bricks. Then scale up slowly (steps of a factor 2 in volume), because you can't scale wall thickness up and the required wall thickness will become bigger on a larger container. The walls are compound walls so it may not be as much a problem as it seems, but 16 bar makes quite a bang.

Re:Fake? (0)

Anonymous Coward | about 10 months ago | (#45745327)

Perhaps not, but I am fairly certain that there is a steel tank in the box behind the seats. You can get a glimps at it in some of the shots.

Re:Fake? (0)

Anonymous Coward | about 10 months ago | (#45744419)

Of course you could make an air tank.

Using those really flat pieces, you just have to use a criss-cross pattern several layers deep so it can't just easily break itself apart.
Also, offsetting the pattern every layer will increase said strength several times over too. (more so if you change the offset +/- each time so the stress doesn't just break out diagonally if you just used a straight plus or minus offset)

Then gluing together would increase that considerably more.

Whether it could hold a reasonable amount of air without shattering in to a Lego-grenade is another question.
It is likely why there isn't a long drive in the video.

Re:Fake? (0)

Anonymous Coward | about 10 months ago | (#45743097)

Saw the vid, for some reason I'm reminded of the 1900's era chess 'robot' machine that actually had a small person working inside of it. Wonder what's really inside of this LEGO car.

Re: Fake? (0)

Anonymous Coward | about 10 months ago | (#45743727)

You can see the guy pushing in the vid. Then close shot and the Alcatraz rolling. That makes me extremely suspicious at least. It could be done, but...

Re:Fake? (1)

noh8rz10 (2716597) | about 10 months ago | (#45744795)

Saw the vid, for some reason I'm reminded of the 1900's era chess 'robot' machine that actually had a small person working inside of it. Wonder what's really inside of this LEGO car.

the Mechanical Turk [wikipedia.org]

Re:Fake? (1)

gl4ss (559668) | about 10 months ago | (#45743919)

it doesn't go up hills.

there's list of non-lego parts somewhere too..

I'd wager glued intersected lego blocks could work as the shaft for that, quite low, power no problem. there's 4 radial engines each with 64 cylinders... so I guess at least 64(or 120+) cylinders are providing push at any given point. cranckshaft would be the shaft that is going straight through the engine(and it has round parts.. if some part is rectangular that is visible then it is that just for style or to save money on rounded legos).. doesn't need that much of a push to go downhill. i didn't notice reverse on the videos.

I'd just assume that they dump the air straight out of the engine so there's no return for the air. so it would be an usual lego air engine just taken to extreme.

Re:Fake? (1)

georgeb (472989) | about 10 months ago | (#45744537)

It can't be fake! This is from the same country that's gonna launch a lunar mission [wikipedia.org] from a supersonic seaplane [wikipedia.org]

Re:Fake? (0)

Anonymous Coward | about 10 months ago | (#45744721)

5: smooth ride
The engine shows an amazing smooth ride. Given that the engine can start from a dead stop it is likely adding air until the piston has to move the other way. This causes vibrations as there is no brake on the piston. It accelerates and then it hits the end. Avoiding this is quite tricky as it involves RPM controlled valve control. I would love to see a lego valve controller, which takes engine RPM into consideration.

There are 256 pistons, so each one is small and lightweight. It doesn't look like those pistons cycle any more than 2Hz, so accelerations are also small. Small accelerations of low mass, finely distributed around the revolution: it should be a very smooth ride. Except for the square tires.

Re:Fake? (1)

bytesex (112972) | about 10 months ago | (#45744973)

Torque - the guy is *sitting* in it! Have you ever thought of what tension the weight of a grown man puts on something built out of Lego over the distance between the front- and hind-wheels?!

Re:Fake? (1)

Smidge204 (605297) | about 10 months ago | (#45745183)

1. There are valve assemblies on "top" of each piston assembly, and these valves are flipped back and forth by the motion of the pistons themselves.

2. The tubes are only a few inches long between valve and piston, and the valve itself vents the "off" side. At most you only need to depressurize a few inches of tubing at a time.

3. There appears to be four pistons per assembly, 16 assemblies per stack, and 4 stacks. Each piston assembly has a small crankshaft which outputs to a gear, and then each assembly in the stack combines their power via a set of gears to a shaft, and each stack contributes to the shaft. You don't have (or need) a single central crankshaft like with a typical car engine.

4. It doesn't necessarily need bearings, but it's entirely possible to make select sections that are round enough or use a series of wheels that ride in a round-enough track for support. Alternatively, the gearboxes on either end could be non-LEGO, leaving only the shaft to be built with no support required. (I suspect this is the case at least for the rear axle)

5. Each piston has a travel of ~3cm and has dick-all inertia.

6. Agreed, but there's a dropbox linked through the official site has some better photos.

Being an experiences LEGO nerd, there's nothing obvious that completely rules out such a contraption. I suspect they may have used glue on some parts, though, at the very least.
=Smidge=

Re:Fake? (0)

Anonymous Coward | about 10 months ago | (#45745261)

You must have never built from LEGO Technic Pneumatic parts, then. The valves can be installed right next to the pistons and are standard LEGO parts, just as the pistons are. The motion of the piston actuates the valve. The entire single-piston unit is very compact and the critical variable-pressure tubing is a few inches long at the most.

The crankshaft is a distributed crankshaft - there surely are many small crankshafts, likely all geared to a common pick-off shaft. It's just like a bog-standard LEGO air engine, such things are parts of some LEGO Technic kits, only it's been multiplied many times.

There isn't a problem with making a rather decent power transfer shaft with LEGO Technic parts. It can be quite stiff if you know what you're doing.

The lack of technical details is annoying, I agree. There was no reason not to make the frame out of LEGO, if, as someone else insists, it has a metal frame.

Re:Fake? (1)

AC-x (735297) | about 10 months ago | (#45745631)

In regard to the possibility of a lego engine, while you can't see the exact workings it's probably very similar to this working 3 cylinder pneumatic in-line engine [nico71.fr] .

Also my understanding of the pneumatics of these engines are that the long feeder pipes are constantly pressurised and the air is only redistributed right next to the cylinder.

From the look of it there isn't a main crankshaft, but rather lots of small crankshafts linked by gears. With the load distributed over so many separate gears there probably isn't that much force on any individual part other than the main drive-shaft, and the overall size of the engine would work to smooth out any jitters.

Neat but evolutionary, not revolutionary (4, Interesting)

devphaeton (695736) | about 10 months ago | (#45743061)

It is neat, I'll give it that. However, we've been building pneumatic Lego 'engines' for decades. They are all over Youtube and other places. The sheer scale of this is impressive but I don't know that "genius" is the right word here.

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