Originally Posted by
miahmiah
Automotive timing belts look very similar - if they stretched at all then your car doesn't work very well, so I would say belt technology is definitely good enough for bicycles.
And about that "saw your chainstays from your seatstays comment above" I am really surprised that there is even one person that will actually do that. Scary.
timing belts and other automotive belt DO stretch, and have tensioners to compensate. so to make up for the stretch in these belts, if the are made the same materials, some kind of tensioner would be needed. and those tend to not work that well with a fixed gear. could be viable for a singlespeed, but not a fixed gear.
of course, all of the above is invalid if the belts don't stretch that much, you could just adjust your wheel in the dropouts
