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When one engine isn't good enough, add two more (infosec.pub)

submitted 6 days ago by neatobuilds@lemmy.today to c/motorcycles@sh.itjust.works

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cross-posted from: https://mastodon.neatobuilds.com/users/mrpistachios/statuses/114870583550542224

When one engine isn't good enough, add two more

@photography
#photography #motorcycle #harleydavidson #ThrowbackThursday #california #year2014 #Sonya58 #carmelca #TheQuail

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[–] fartographer@lemmy.world 8 points 6 days ago (1 children)

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.

[–] officermike@lemmy.world 6 points 6 days ago (1 children)

Page title says it's a drag racer, so I took the liberty of making the following guesses:

Engines aren't running long enough to overheat
In the Swiss-cheese excavator bucket-looking cover is what I'm guessing is a clutch. It very well may be the case that this gets run wide open throttle and acceleration and speed are modulated with the clutch.

All of this is just guessing. I have no first-hand experience with drag racing drivetrains, motorcycle or otherwise. I do seem to recall learning that there are automotive drag racing transmissions in which the clutches weld themselves closed during the race and need to be rebuilt between runs.

[–] fartographer@lemmy.world 3 points 6 days ago

Ew! Your speculations sound based on reason and research! I, on the other hand, was relying on pure stupidity.

Personal anecdote about welding clutches: turns out it's really easy to do! The clutch pedal fork in my '95 4Runner broke, so I ended up getting my entire clutch system replaced/rebuilt. As part of the rebuild, my mechanic's parts supplier offered a deep discount on a racing clutch they recently started manufacturing. Somehow, this clutch sat incorrectly in the housing and presented a partial gap of a few micrometers, which the supplier assured us would be negligible within a few days. A couple of weeks later, I was running errands all day and suddenly smelled and heard something awful and couldn't depress my clutch pedal, even when trying to stand on it. That was a fun day of abusing my clutch start override every time I stopped and wasn't on a decline or had to change between forward and reverse!