Without being limited to what's available in India, are there any good shaft-drive bikes? If anyone knows one, I'd love to find out about it.
A while back I considered buying a used Biomega AMS
http://moderndna.com/rides/biomega-ams-bicycle/
While researching the model, I found that reviews weren't great - here is an extract from bikehugger
"The shaft drive is a love it or hate it thing. We appreciated the functionality of it and nearly immediately
discovered the downside. Zero maintenance, looks cool — great — but
massive friction, speed limitations, and a gear range that, hobbled by
frictional losses, isn’t going to get you up any hill."
I used to own a motorcycle with a shaft drive and never had anything but praise for that (low maintenance, worked great), so I would expect it should work for bikes too. However, I'm no mechanical engineer, maybe there are limitations on a bike.
Deepa, are you saying your husband has a shaft-drive bike? How does he like it? If you can share more details, I'd appreciate it. Details such as model, cost, ordering process would be useful.
-Arvind