ettore bugatti
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| posted on 8/3/11 at 09:55 PM |
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Belt drive conversion
Hi,
Im currently involved in a Yamaha R1 conversion into a Mini, it is a front wheeldrive setup.
The idea is to use a belt drive instead of a chain.
Now, I have found that it would be possible (in theory at least).
So where could I find pullies that gives me a ratio of about 2.7, that takes the same place as 14/38 tooth sprockets for a chain drive.
I would like to use a pitch of 14mm.
I recon that a 1.5" belt would be wide enough, or should we go wider?
Thanks!
[Edited on 8/3/11 by ettore bugatti]
[Edited on 8/3/11 by ettore bugatti]
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matt_gsxr
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| posted on 8/3/11 at 10:08 PM |
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What about the kind of kit they use on massive superchargers. I mean proper dragster blowers, some of those draw big power.
http://theblowershop.com/category/23
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designer
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| posted on 8/3/11 at 10:15 PM |
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American bikers use wide belts, search in the US.
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tegwin
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| posted on 8/3/11 at 10:15 PM |
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Soemthing like this would work...
http://www.bearingboys.co.uk/14M_Taperlock_Timing_Pulley-1808-c
But why would you want to? They can be noisier, ideally need a tensioner on them to compensate for heat stretch....
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hillbillyracer
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| posted on 8/3/11 at 11:26 PM |
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I'd be looking for people who deal power transmission systems for industry, there is a massive range of stuff available to transmit the drive
from electric motors etc to where it needs to be on a machine.
I know for example there's an agricultural grass mower called a Kidd Clipper that uses to two toothed belts to drive two 1.2m cutting drums, not
unlike a car timing belt but mabye 100mm wide!
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MikeRJ
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| posted on 9/3/11 at 09:18 AM |
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quote:
Originally posted by tegwin
But why would you want to? They can be noisier, ideally need a tensioner on them to compensate for heat stretch....
And can snap without warning if you get a stone caught in the pulleys, and availability of spares will be very poor compared to a chain and sprockets.
The lower maintenance (whilst still in one piece!) is really the only thing going for them.
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coyoteboy
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| posted on 9/3/11 at 11:19 AM |
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Chains are remarkable devices when you come to look at it.
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ettore bugatti
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| posted on 9/3/11 at 01:47 PM |
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Thanks for your inputs!
The goal is to be different, however the following advantages are interesting:
-Belts have a constant power lose during their life span. whereas a chain take more power as miles are piled on
-Belt drive system is lighter
-Belts last longer than chain
-Belts don't need lube
-Belts are positive drives and don't have annoying chain snatch
Anyone experience with Gates Poly Chain GT2?
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tegwin
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| posted on 9/3/11 at 03:50 PM |
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No chain snatch?!?? You get elastic retardation instead from the belt...
Lighter?!?!? Unless you get bespoke alloy pulleys I suspect you will end up with stonking heavy steel pulleys.... much heavier than their
"sprocket" equivalant.
Not trying to ruin your fun, good to see something different...
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Would the last person who leaves the country please switch off the lights and close the door!
www.verticalhorizonsmedia.tv
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T66
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| posted on 9/3/11 at 05:51 PM |
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How short are you planning on the belt being ?
A V8 with a top mounted blower still has a decent run of belt between centres, in a fwd engined Mini surely the belt will have to be tiny?
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MikeRJ
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| posted on 9/3/11 at 06:05 PM |
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quote:
Originally posted by ettore bugatti
Thanks for your inputs!
The goal is to be different, however the following advantages are interesting:
-Belts last longer than chain
Under ideal conditions, maybe 
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