Zoophoria
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| posted on 31/5/04 at 01:24 PM |
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Chaindriven lsd
I'm planning on building a midengined bikepowered car with a chaindriven lsd, is it possible to use a lsd from a ordinary car, like sierra, seal
it and fill it with grease then use it in the "open". I've also been thinking about mounting the engine longitudal and couple it to
a complete differential housing using a very short propshaft. The problem for me in mounting it like this is that the bikeengine will lean over to the
left, wich is will put most of the weight into that direction and as I am a swedem thats also the side of the car that I will be placed with all my 85
kilos. What do you guys think?
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Crazy Jay
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| posted on 31/5/04 at 02:02 PM |
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I think u shud go for a quaife atb diff. Bike chain jus fits straight on
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Zoophoria
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| posted on 31/5/04 at 03:41 PM |
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The problem is I can´t afford one of those. :/
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JoelP
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| posted on 31/5/04 at 04:11 PM |
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how about using the engine longitudinally but driving the diff off the sprocket. Then you can select a custom final drive ratio, and the diff is still
sealed. plus the engine can be to either side. Having said that, you would need the sprocket to be further out to have the engine on the right hand
side of the car. Maybe a small prop, with a bearing at far end, with a sprocket on it.
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andkilde
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| posted on 31/5/04 at 06:09 PM |
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Go here:
www.fsae.com
Register for the forum and ask the kids -- Formula SAE stuff is "hella cool" 
Or, volunteer at the local Uni and figure it out face to face.
Cheers, Ted
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Peteff
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| posted on 31/5/04 at 08:27 PM |
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I think the grease may interfere with the LSD idea, they usually run different oil to standard diffs and might not work with anything else.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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ChrisGamlin
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| posted on 31/5/04 at 08:46 PM |
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Quaife ATBs run in standard gear oil because they are gear type LSDs, and Sierra viscous LSD internals are sealed so the diff itself also uses normal
oil, its only plate type LSDs that need special oil to allow the plates to slip correctly.
With regards to the Quaife ATB, it doesnt connect directly up to a chain diff as mentioned above, the ATB itself is only a bolt-in addition to an
existing crown wheel / pinion so is different for each application, not to be confused with Quaife's chain driven rear diff for BECs that has an
ATB inside (an ATB is about £4-600, a full chain driven diff for a BEC is a lot more)
cheers
Chris
[Edited on 31/5/04 by ChrisGamlin]
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Zoophoria
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| posted on 2/6/04 at 09:14 PM |
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How effective is the Sierra viscous lsd? Maybe it would do for my needs..
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