cross-posted from: https://mastodon.neatobuilds.com/...
When one engine isn't good enough, add two more
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When one engine isn't good enough, add two more
a year ago by MrPistachios to c/motorcycles
officermike 10 points a year ago
I found a gallery that has other photos of what appears to be the same bike with the drive chain visible.
fartographer 7 points a year ago
That's honestly a better solution than the two differentials I hoped for and achieves essentially the same results. I just figured I'd you're trying to do something as silly as packing the power of 3 engines into one vehicle, creating a train of differentials that provide an output of (1+2)+3 would be far more amusing and mechanically overcomplicated.
But I guess whoever built this was trying to be slightly more serious. But obviously not serious enough to buy a bigger engine.
ininewcrow 6 points a year ago
I was imagining engine overheating issues .... If you powered this thing for longer than ten minutes, you'd have to start moving forward to push the air over the motor to keep it cool enough ... which wouldn't be a problem for engine #1 at the front, but engine #2 would receive all the hot air from engine #1 and engine #3 would receive all the hot air from engines #1 and #2!
Not to mention ... how do you sync idle speeds and direct engine rotation for three different engines using a direct timing chain and no clutch system to deal with any differences in engine rotation?
As silly as this all sounds .... I would still love to see this thing turned on and driven down the road!
fartographer 8 points a year ago
If you powered this thing for longer than ten minutes, you'd have to start moving forward to push the air over the motor to keep it cool enough
Easy enough to solve: use each idler to drive a fan. Also, large radiator. Where? Everywhere. The whole bike. Heat-resistant clothing mandatory and no shoelaces allowed!
how do you sync idle speeds and direct engine rotation for three different engines using a direct timing chain and no clutch system to deal with any differences in engine rotation?
You assume there's no clutch system, but perhaps there's no throttle system! When you start the bike, all three engines scream, locked at full throttle. The handle that would usually control throttle instead is directly tied to three clutches and your speed is determined by how engaged your clutches are.
People will always know when you're approaching: first they'll hear you, then they'll smell you, and then they'd see you.
how do you sync idle speeds and direct engine rotation for three different engines using a direct timing chain and no clutch system to deal with any differences in engine rotation?
*Spoken as Marisa Tomei* Positraction. I refuse to say more because whatever implementation your brain pictures is far better than any mental image I can paint with words.
fartographer 3 points a year ago
I'd be very excited to find out that they're using two differentials
officermike 4 points a year ago
I guess you're not going to be very excited then. See my comment above for a link to more photos.
ininewcrow 3 points a year ago
A better photo would have been to take a picture of the other side of the bike.
neatobuilds 5 points a year ago
yeah sadly this was back when I first got my camera and I was more occupied with figuring out how it worked than with what I was taking a picture, I have like hundreds of photos from that day all from bad angles or with peoples butts in the frame
fartographer 5 points a year ago
Show, don't tell. Release the butt cut!
Ep1cFac3pa1m 9 points a year ago
My ears hurt just from thinking about what a 6 cylinder 2-stroke would sound like
expatriado 6 points a year ago
i am supposed to ride superman position? cuz the seat is too far from the handles
Nastybutler 4 points a year ago
Yes. It's an old drag racing bike.
expatriado 2 points a year ago
interesting, just searched "old motorcycle drag race" and found similar builds
Darkassassin07 4 points a year ago
It's also only going to run for like 10min with three engines and that tiny fuel tank.
Geometrinen_Gepardi 3 points a year ago
Why do the exhausts taper to tiny whistles? I get that a 2 stroke needs the backpressure but aren't you limiting most of your power away with such drastic taper?
TerraRoot 6 points a year ago
The smaller it is, the more power, and the sooner you melt the piston from the retained heat/pressure.
Don't think of two stokes as three simple moving parts, they are one almighty pipe and a not that important engine.
thenextguy 3 points a year ago
“The harmonica sounds amazing.” Steven Wright
ShinkanTrain 2 points a year ago
Needs a turbocharger
bathing_in_bismuth 2 points a year ago
Vertical balancing has its place
Tylerdurdon 2 points a year ago
Reminds me of that South Park episode "The F word."
pankuleczkapl 2 points a year ago
Bad piggies aah motorcycle 💀💀💀
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motorcycles
@sh.itjust.works
447
28
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A place to share all your motorcycle braaaps and adventures!
go to feed...
This is absolutely impressive and horrifying at the same time.
How does the drive train even work on this thing? Or is it really just one engine powering the bike and then two just making noise to impress the crowd?
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