KevDo
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| posted on 31/1/08 at 09:15 PM |
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Drive Option Pics Please.
Hi,
I'm just curious as to how people generally transfer the drive from a bike engine to the rear wheels.. i'm just interested as i've
heard about diffs, even sierra diffs and was just wondering how it all works/fits..
any info and pics would be appreciated.
i've looked through 30 odd pages but haven't found much, so, yeah, it must be a noobie tipic of discussion! lol
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Howlor
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| posted on 31/1/08 at 09:18 PM |
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Bike engine mounted longitudinally then a drive flange that replaces the bike sprocket on the gearbox. Then just a prop shaft straight off this flange
down to a sierra diff.
Steve
[Edited on 31/1/08 by Howlor]
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itiejim
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| posted on 31/1/08 at 09:20 PM |
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Hi. I'm a newbie too
From what I can see, most front engined cars replace the bike output with a suitable flange to bolt a propshaft onto whilst the mid engined ones often
use a chain.
Hope I'm not leading you up the garden path....
Someone more knowledgable will be along soon to confirm/deny!
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KevDo
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| posted on 31/1/08 at 09:23 PM |
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Ah! that makes sense for the front engined cars..
So if the rear engined cars use a chain, how does that work? do you just use the sierra diff again except get an adaptor onto that to allow a sprocket
to fit and use a short chain?
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Howlor
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| posted on 31/1/08 at 09:26 PM |
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Yep you use an open diff with a gear around it. Then mount the engine tranverse and run the chain like a normal bike would.
You can use a shaft drive bike engine and put it straight in to a sierra diff.
Steve
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bigrich
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| posted on 31/1/08 at 09:32 PM |
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propshaft attached to an adaptor on a bike engine output shaft.jpg)
.JPG)
A pint for the gent and a white wine/fruit based drink for the lady. Those are the rules
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KevDo
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| posted on 31/1/08 at 09:33 PM |
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i see i see.. yeah well that gives me more to think about then, seems very simple and do-able..
plus i miss not having the scream of a bike engine next to me! very tempting.
So has anyone ever gotten a sierra prop shortened and balanced to allow for a mid-engine setup without using a chain obviously.. i fancy the idea of a
bike engine but i don't fancy the constant maintenance, adjustments and replacement of a chain and sprockets.
oh btw, that looks very nice BigRich! 
[Edited on 31/1/08 by KevDo]
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dan__wright
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| posted on 31/1/08 at 09:34 PM |
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this pic shows my engine and prop
FREE THE ROADSTER ONE…!!
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BenB
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| posted on 31/1/08 at 09:43 PM |
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If you use a shaft driven engine like a ST1100 you don't have to faff around with chains  Just shut + cut a propshaft
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NS Dev
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| posted on 31/1/08 at 09:49 PM |
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like this for mid/rear engined.
this is for twin bike engines. You would substitute a std car diff for the shaft in the pic. a driven sprocket bolts to each end of the shaft and a cv
joint recesses into each end
 
Fiat bootspace Dec 07
[img][/img]
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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lsdweb
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| posted on 31/1/08 at 09:51 PM |
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Chain drive in my mid engined set up.
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KevDo
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| posted on 31/1/08 at 10:14 PM |
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wow! loving the twin engined buggy there!..
The chain drive one looks like good work!! any advantages of using the chain/sprocket on the shaft over using a car diff? i assume there will be
bigger loses using the diff over the chain.
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blue2cv
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| posted on 31/1/08 at 11:46 PM |
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Another option
 
Rescued attachment DSCF0087.JPG
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lsdweb
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| posted on 1/2/08 at 07:29 AM |
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quote:
any advantages of using the chain/sprocket on the shaft over using a car diff?
Variable ratios, simplicity, light weight. Plus the orientation of the engine makes a chain the most obvious option.
It still uses a car diff though! That's a Quaife Fiesta diff in mine.
Wyn
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