2006-09-27 05:40:25 · 7 answers · asked by XT rider 7 in Cars & Transportation ➔ Motorcycles
thanks guardrailjim.
I still have this feeling that there is a sideways leap in bicycle technology just around the corner, CVT, no chain, less weight. It will lead to a huge expansion in bicycle popularity.
2006-09-27 07:14:15 · update #1
although some power would be lost, you could get a smoother gear change due to the give in the belt.
2006-09-28 02:47:39 · update #2
You could make this work with a good internally geared hub which eliminates the need for a derailleur. Rohloff makes a 14, yes 14, speed internally geared hub albeit pretty pricey. But Shimano makes some decent enough 7 speed internals. It actually might make for a good idea in the recreational market with the advantages of a cleaner and less maintenance drive train. It definitely wouldn't fly in the competitive side though due to the lower efficiency of the drive train. The absolute best conditioned cyclist can only maintain a power output of about 3/4 of a horsepower. A little extra drag counts for a big percentage of power loss.
2006-09-27 19:49:51 · answer #1 · answered by Ron Allen 3 · 0⤊ 0⤋
1. It's been done, along time ago. using timing belts.
2. Belts are wider than chains, requiring a greater offset at rear wheel and front drive pulley. This means changing the frames. And because belts are wider, to obtain the same strength as a chain, the weight is not enough to make any difference at all.
3. I like that your thinking though, better luck next time.
2006-09-27 12:07:43 · answer #2 · answered by Martin 3 · 0⤊ 0⤋
You wouldn't be able to shift gears if on a 10 speed.
Belt drive is to wide and bulky for a bicycle. Using a thin belt with teeth, the belt would lose strength and be prone to damage.
If you were to use a thin belt, like one on a scooter with a CVT clutch - The clutch would be heavy and to bulky to fit between the frame and pedals. You'd need a wide frame to fit the rear wheel with a pulley.
2006-09-27 06:05:32 · answer #3 · answered by guardrailjim 7 · 1⤊ 0⤋
Because a chain transmits force more directly and with less friction especially in a low speed application like this.
2006-09-27 05:45:56 · answer #4 · answered by frigon_p 5 · 1⤊ 0⤋
It could be a good idea,but think about falling down. What could happen ?
2006-09-27 05:52:32 · answer #5 · answered by brian 2 · 0⤊ 0⤋
belts have to flex. this wastes energy. and if you're trying to race then every little bit helps.
2006-09-27 05:48:45 · answer #6 · answered by a1tommyL 5 · 0⤊ 1⤋
yes why not? sounds like a good idea.
2006-09-27 05:43:29 · answer #7 · answered by ~natural~ 3 · 0⤊ 0⤋