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Belt Drives
Perusing the LBS in search of rims, hubs and spokes I spotted a little
folder with a Nexave 7-speed hub and a belt drive. Sooo...why don't we see more belt drives? Maintenance free, tough as tarmac, used on motorcycles and cars so proven technology. Ok, I note it's going to be tricky with a Campag-10 setup, but still. |
Belt Drives
Tosspot wrote:
Perusing the LBS in search of rims, hubs and spokes I spotted a little folder with a Nexave 7-speed hub and a belt drive. Sooo...why don't we see more belt drives? Maintenance free, tough as tarmac, used on motorcycles and cars so proven technology. Ok, I note it's going to be tricky with a Campag-10 setup, but still. I was going to ask exactly the same question. Just think, no moving parts. Daniele -- Apple Juice www.apple-juice.co.uk Chapter Arts Centre Market Road Cardiff CF5 1QE |
Belt Drives
D.M. Procida wrote:
Tosspot wrote: Perusing the LBS in search of rims, hubs and spokes I spotted a little folder with a Nexave 7-speed hub and a belt drive. Sooo...why don't we see more belt drives? Maintenance free, tough as tarmac, used on motorcycles and cars so proven technology. Ok, I note it's going to be tricky with a Campag-10 setup, but still. I was going to ask exactly the same question. Just think, no moving parts. No chain lube, no powerlinks, no cleaning! |
Belt Drives
Tosspot wrote:
No chain lube, no powerlinks, no cleaning! Would need joining somewhere but yes would be a lot cleaner than a chain. -- yours S Nihil curo de ista tua stulta superstitione |
Belt Drives
Tosspot wrote:
Sooo...why don't we see more belt drives? Maintenance free, tough as tarmac, used on motorcycles and cars so proven technology. Same reason you don't see many on motorcycles: less efficient than a chain. But on a m/cycle you can get over a lot of the problem by just putting in a bigger engine, which doesn't apply to bikes in the same way... Same with shaft drive. They're there and you can buy them, and you have the same pros/cons (though both to a greater extent with a shaft): cleaner and less maintenance, but sucks up more power and limits your choice of final drive gear. Also the case that you can aovid a lot of ther mess and maintenance of a chain drive, at least with hub of single speed gears, by just enclosing it, which does add a little weight but doesn't compromise the efficiency (and by reducing the amount of chain wear from road clag may actually improve matters over the longer term). Pete. -- Peter Clinch Medical Physics IT Officer Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital Fax 44 1382 640177 Dundee DD1 9SY Scotland UK net http://www.dundee.ac.uk/~pjclinch/ |
Belt Drives
Tosspot wrote:
D.M. Procida wrote: Tosspot wrote: Perusing the LBS in search of rims, hubs and spokes I spotted a little folder with a Nexave 7-speed hub and a belt drive. Sooo...why don't we see more belt drives? Maintenance free, tough as tarmac, used on motorcycles and cars so proven technology. Ok, I note it's going to be tricky with a Campag-10 setup, but still. I was going to ask exactly the same question. Just think, no moving parts. No chain lube, no powerlinks, no cleaning! No efficiency either. Plus tend to slip under power unless you use a heavy belt under high tension. Best left to local errand bikes or vehicles with motors. Like shaft drive, they are not common on bikes for a reason. -- Tony "I did make a mistake once - I thought I'd made a mistake but I hadn't" Anon |
Belt Drives
I submit that on or about Sun, 07 Aug 2005 21:37:57 +0200, the person
known to the court as Tosspot made a statement in Your Honour's bundle) to the following effect: Sooo...why don't we see more belt drives? Less efficient, and belt life. I have heard the noise a Strida makes as the belt disintegrates :-) Guy -- http://www.chapmancentral.co.uk "To every complex problem there is a solution which is simple, neat and wrong" - HL Mencken |
Belt Drives
in message , Tony Raven
') wrote: Tosspot wrote: D.M. Procida wrote: Tosspot wrote: Perusing the LBS in search of rims, hubs and spokes I spotted a little folder with a Nexave 7-speed hub and a belt drive. Sooo...why don't we see more belt drives? Maintenance free, tough as tarmac, used on motorcycles and cars so proven technology. Ok, I note it's going to be tricky with a Campag-10 setup, but still. I was going to ask exactly the same question. Just think, no moving parts. No chain lube, no powerlinks, no cleaning! No efficiency either. Plus tend to slip under power unless you use a heavy belt under high tension. Or teeth. I suspect efficiency may be part of it, but probably the main reason belt-drive kits are not available for conventional bikes is because of the seat-stay. Either you'd have to have a removable drive-side seat-stay, or no drive side seat-stay (cantilevered chain-stay), or you'd have to mount the rear pulley on the outside of the seat-stay/chain-stay, because, unlike a chain, you can't break and rejoin a toothed belt. All this is possible of course but you can't retrofit it to a conventional frame design. -- (Simon Brooke) http://www.jasmine.org.uk/~simon/ Das Internet is nicht fuer gefingerclicken und giffengrabben... Ist nicht fuer gewerken bei das dumpkopfen. Das mausklicken sichtseeren keepen das bandwit-spewin hans in das pockets muss; relaxen und watchen das cursorblinken. -- quoted from the jargon file |
Belt Drives
Simon Brooke wrote:
in message , Tony Raven ') wrote: No efficiency either. Plus tend to slip under power unless you use a heavy belt under high tension. Or teeth. Have a look at a Harley drive belt - it has teeth and still needs lots of tension to stop it slipping on a large diameter toothed drive pulley. So does the toothed belt on a Strida (which slips if you try too hard on the pedals) -- Tony "I did make a mistake once - I thought I'd made a mistake but I hadn't" Anon |
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