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Anyone use or heard anything about this system?
http://www.kinetics-online.co.uk/html/mountain_drive.shtml
That one only has square taper cranks, and gears down not up - I think people mainly use them on road / touring / folding bikes.
They are making a 'freeride' version, which lets you use a small chainring, and gears up:
http://www.seed-your-ideas.com/Triebwerk/en/index.html
They are made by a very nice man called Florian who lives in Switzerland. He makes things to very high standards, which are pretty reliable, but they aren't cheap, and if anything goes wrong, it is a long time to get a fix. I have one of his unicycle hubs, and it has gone back to Switzerland once.
Joe
http://www.schlumpf.ch/antriebe_engl.htm
Saw this guy at Eurobike a few years back. Impressive bits of kit. No shifters, you just use you heal to kick a button where the crank bolts are.
tried one of these at inter bike a coupler years ago. imo it would be awkward to use off road, shit, it was awkward to use in the demo area!
Opps, same as the Triebwerk :O)
tried one of these at inter bike a coupler years ago. imo it would be awkward to use off road, shit, it was awkward to use in the demo area!
You get used to it with a little practice - at least you do on the unicycle, and that is fixed gear with forward backward balance control being done through the pedals, which I'm guessing is a lot harder to shift than the standard bottom bracket version.
Joe