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Apologies if this has come up previously - it's an intriguing idea.  Maybe they should produce a hybrid model based on the wooden bike?

http://www.stringbike.com/

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Striking that there is no video on the website...  Or if there is, it is well hidden.  

Often see different forms of drive - there was a sort of rocking motion one at the Bike Show last year.  Part of me thinks that this is because it's a market dominated by huge manufacturers with vested interests.  Another part thinks:  You know, this is almost mechanically perfect, with only a few percent of energy lost in any case, so you're not going to see an order of magnitude improvement, so why bother?  

The pedal cranks are not straight - there is a short section between the hub and the gear-thingy for the strings, and then another section to the pedals.

That, surely, is going to increase the distance between the pedals? Which may affect the effects on the hips and knees.

Anyway - with the domination of chain driven gearing, and its reliability (regardless of the claims made on that website) I can't see this taking over....

Hi

The promotional video is under marketing support.  Looks horrible to me and if you watch the video youll see how many of the shots have things obscuring the pedal and 'string' action.

Strikes me as a solution looking for a problem

The more I look at it, the more similar it seems to a mock up they had at the NEC bike show.  A very asynchronous movement.  

Interesting that in the partially hidden promo video - you had more patience than me finding it - it shows people doing stuff that you could do on a normal bike, but this doesn't seem to have occurred to these trendy young hipsters...

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