Si wrote:there's a chap that rides the origami rides who has a homebrew belt drive set up on his moulton. He's gone for a rohloff hub with a custom carbon belt. He reckons it's really good, maintenance free and reliable. I think that Moulton were looking at his set up with a view to reusing the technology.
I've been in touch with said chap - he's very pleased with the Moulton/Rohloff/belt drive combo. He used the short-lived Moulton Bentley as the basis for the plan, and put some of the ideas therefrom into place on a Moulton Double Pylon NS
After some teething-trouble (possible Unintended Pun alert) he reports that it goes Great. However, it's a lot of work/money. I'll wait with interest to see what the Good Folk at Moulton produce - the Moulton "do" @ BoA is next month...
CJ wrote:Belt drive is the answer to a problem that already has a better answer. It's called a chaincase.
I must admit, it had occured to me to wonder whether there might be some milage (Oh no - not another Unintended Pun...) in a chain case - I can think of several old motorcycles that had full chaincases fitted, and provided you oiled them regularly, the chains magically took on almost unlimited life

(I'm talking about models with power outputs very modest compared with say a Fireblade...)
It's the fatal combination of open chain/sticky lubricant/road-dust that creates the chain-wearing grinding paste. Once you cover up the chain and lubricate it regularly, it turns into a silky smooth, long-lived Wonder thing.
However, I can't bear the thought of a great big tin chain case stuck on me TSR (vanity vanity), but having thought rather vaguely about recumbents and the way they use some sort of durable/flexible plastic tubes to route their great long chain runs, I'm sure there could be a way of combining tubes and dishes to provide good cover for the chain in a way that was both physically and aesthetically light. Suitably covered, I bet a good chain would last for years!
There... I've just persuded myself out of the Great Belt Drive idea
