AndreZA Posted August 29, 2007 Share I think thit will be cool for SS. http://www.cyclingnews.com/photos/2007/tech/news/08-28/CDS_chainring_with_ports.jpg http://www.cyclingnews.com/photos/2007/tech/news/08-28/CDS_keystone_dropout_on_bike.jpg Read more here http://www.cyclingnews.com/tech.php?id=tech/2007/news/08-28 Link to comment Share on other sites More sharing options...
RodTi Posted August 29, 2007 Share Nice!Like the crankarms too... Link to comment Share on other sites More sharing options...
rad006 Posted August 29, 2007 Share mud would never be a problem with that Link to comment Share on other sites More sharing options...
Johan Bornman Posted August 29, 2007 Share Belt drives are nothing new and each year at Interbike in Las Vegas there is a new company launching a belt drive system. Belts and pulleys (not cogs, like they say) have driven motors and pumps, motorcycles and a host of other machinery for more than a hundred years, not to mention my lawnmower. Yet, the minute this "technology" is reinvented for cycling, they have to use the C-word.....carbon. All sorts of fibres can be used in these belts, yet no cyclist worth his/her salt with settle for less than C*A*R*B*O*N and here we have it, the CABON DRIVE. Puhleeese. Then, they go on to talk about increased efficiency. C'mon someone, moer me with a wet fish. The efficiencies of drives like these are well known, well documented and dont need speculation. Make no mistake, I like the idea, but can do without the marketing rubbish. I find it strange that they didn't mention the obvious solution to single-speeding - internal gear hubs like Rohloff and even Shimano, Sturmey Archer and others. Oh, and one final gripe, they talk about cogs. A cog is one tooth in a sprocket or gear. They actually refer to pulleys. I hope this concept finally makes it to market because I think the chain and sprocket on mountainbikes can be improved on. Leave road bikes alone, chains aren't an issue there. Johan Bornman2007-08-29 09:30:17 Link to comment Share on other sites More sharing options...
MichH Posted August 29, 2007 Share Johan, I remember reading an article a while ago where keeping the belt in one piece was an issue because of the design of the bicycle? On a chain you can break it and put it back on, but one of the benefits of a belt was that it didn't have that weakness? The article I read (blown if I can remember where!), had to design a rear triangle that could be disassembled or something! Link to comment Share on other sites More sharing options...
Johan Bornman Posted August 29, 2007 Share Johan' date=' I remember reading an article a while ago where keeping the belt in one piece was an issue because of the design of the bicycle? On a chain you can break it and put it back on, but one of the benefits of a belt was that it didn't have that weakness? The article I read (blown if I can remember where!), had to design a rear triangle that could be disassembled or something![/quote'] Yes, that is one minor drawback of a belt drive - there are others too. But designing the bike to accommodatge a one-piece belt is realitively easy. It is a question of the dropout that disconnects from both the seatstay and chainstay. I think many carbon bikes with alu dropouts are already bolted onto the frame. They would be able to accommodate a belt.Johan Bornman2007-08-29 11:47:25 Link to comment Share on other sites More sharing options...
GoLefty!! Posted August 29, 2007 Share neat idea, nothing new, nothing to see here,moving on Link to comment Share on other sites More sharing options...
spotbikes Posted September 9, 2007 Share Johan - Frank here from Spot Brand. Read some of your comments and would dig having the chance to give you more info on the system. Bell me or email and I would be happy to give you all of it - both barrels. Thanks - Frank Link to comment Share on other sites More sharing options...
Merlin Posted September 10, 2007 Share ...if you're on holiday and your fanbelt breaks... ;-) What about stretching, hardening, and friction? I'm not putting it down...these are legitimate queries I'm interested in. Cheers, N. Link to comment Share on other sites More sharing options...
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