Thorn Cycles Forum

Technical => Transmission => Topic started by: Andybg on February 10, 2013, 03:05:26 PM

Title: Shaft Drive
Post by: Andybg on February 10, 2013, 03:05:26 PM

I never even knew you could get it on a bike but here is one for sale.

I would imagines the efficiency loses in the system are relatively high but does look clean if somewhat strange

http://www.ebay.co.uk/itm/carrera-Free-Spirit-shaft-drive-bike-with-7-speed-nexus-hybrid-alfine-voodoo-/290859287096?pt=UK_Bikes_GL&hash=item43b8908238

Andy

Title: Re: Shaft Drive
Post by: Andre Jute on February 10, 2013, 04:51:10 PM

Looked into shaft drive about ten years ago. At that time you couldn't get anything except plastic gears. The thing was at the toy-stage of development. I walked on by. I haven't heard since that the gears were changed to metal. Note that permanent frame alterations are required to fit shaft drive. -- Andre Jute

Title: Re: Shaft Drive
Post by: il padrone on February 10, 2013, 09:34:53 PM

Did someone mention the five horsemen of the apocalypse ???

 :P

Title: Re: Shaft Drive
Post by: Danneaux on February 10, 2013, 10:10:32 PM

<nods> Yes, Pete, and the other day I saw a prototype carbon crank with spiral-offset arms, latest variation on the PMP "L" 90° crank. Actually, there's several examples coming to market, including:
http://www.youtube.com/watch?v=f7lBivEvvWg
...or in the evergreen alu...
http://www.youtube.com/watch?v=D54TwOgtd1k

Sigh.

The End is surely nigh.

All the best,

Dan. (...who thinks it is more a matter of what come around goes around)