Today’s invention is yet another bicycle frame.
It consists of a simple cross arrangement with pulleys at the extremities.
A fibre-reinforced drive belt passes around the frame as shown (red) and its tension helps to reinforce the frame itself -which could be substantially shorter and lighter than a conventional layout.
This is inspirational!
1) The chain under the saddle could drive a mechanical massage to prevent pain from sitting.
2) The chain under the saddle could be basis for a saddle-brake
3) follows from (2) the chain under the saddle can heat the saddle in cold days.
(I always hate a wet saddle, why not rotate it upside down or so when parking, build in cover)
4) I would prefer the chain to go from saddle to pedals for safety reasons
Q: is there a mechanism to bring the movement of the chain also to the front wheel? to get a 2wheel drive?
Very glad you enjoyed it Rob.
1) Actually your suggestion might be seriously valuable, given what we know about pubic nerve damage.
2) Yes. I was thinking about some kind of extra drive input, based on sitting repeatedly on the saddle, but couldn’t easily see a good solution.
3) WDITOT?! 😉
4) Fair enough. Originally I thought of having a set of hand pedals as well but I felt it would be too hard to steer without a great deal of additional complexity.
Q: This passed through my mind too, but when I sketched it the belt looked too long and the steering was, again, a bit compromised.
Cheers,
p