Yet Another Cycling Forum

General Category => Freewheeling => Topic started by: Ham on 07 October, 2017, 07:54:00 am

Title: A very interestring bike
Post by: Ham on 07 October, 2017, 07:54:00 am
http://stringbike.com/

This looks like it could be a genuine innovation, unless they're just stringing us along
Title: Re: A very interestring bike
Post by: dat on 07 October, 2017, 08:20:40 am
Only has a 300% gear range. This wouldn't be enough for me down here in Cornwall.
Title: Re: A very interestring bike
Post by: The French Tandem on 07 October, 2017, 08:23:57 am
For me it looks more like "How to take something as simple as a chain and chainring, and make it infinitely more complicated".

I think the string transmission is an excellent idea for rowing bikes, where the power comes from a reciprocating motion. On a normal bike, the power comes from a rotating motion of your legs, you convert it to a reciprocating motion, and then back into a rotation of the hub??

A
Title: Re: A very interestring bike
Post by: Ham on 07 October, 2017, 09:33:21 am
Quote from: The French Tandem on 07 October, 2017, 08:23:57 am
For me it looks more like "How to take something as simple as a chain and chainring, and make it infinitely more complicated".

I think the string transmission is an excellent idea for rowing bikes, where the power comes from a reciprocating motion. On a normal bike, the power comes from a rotating motion of your legs, you convert it to a reciprocating motion, and then back into a rotation of the hub??

A

Urm.Not really. your feet go up and down, the cranks go round and round. It looks like it is lossless connection tbh
Title: Re: A very interestring bike
Post by: T42 on 07 October, 2017, 09:44:21 am
Apart from reliability that's what should be telling: power in vs power out.
Title: Re: A very interestring bike
Post by: sojournermike on 08 October, 2017, 12:13:12 am
I put a new chain on my bike last night and the transmission was silent when pedaling this morning. Even the free wheel is not particularly noisy (Shimano hubs). Whilst this looks entertaining, it's quite expensive given it's not proven.
Title: Re: A very interestring bike
Post by: spesh on 08 October, 2017, 12:23:23 am
What Ham did there, I (finally) see it.
Title: Re: A very interestring bike
Post by: Mr Larrington on 08 October, 2017, 05:24:55 pm
Saw this on FB a couple of days ago.  Would be interesting to see how it performs when the string, pulleys and all those extra pivots are full of SkogTM.

If you really don't want a chain, then a toothed belt needs fewer custom bits.
Title: Re: A very interestring bike
Post by: rr on 08 October, 2017, 10:48:30 pm
We seem to have broken the website

Sent from my XT1562 using Tapatalk

Title: Re: A very interestring bike
Post by: Kim on 08 October, 2017, 10:58:25 pm
YACFdotted.
Title: Re: A very interestring bike
Post by: Cudzoziemiec on 09 October, 2017, 11:15:33 am
Now I can see it, yes, wow! A different gear for each leg; limited audience but very useful for some (I expect).
Title: Re: A very interestring bike
Post by: Kim on 09 October, 2017, 12:35:26 pm
Loading for me now too.  Wow.  My first impression is "that's complicated", but that's probably because it's different from what I'm used to.  Lots of pivots, but really simple gearing.  Hmm.  I expect someone will find a use for it.