Stringbike

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Stringbike

Postby Zynster » Fri Sep 24, 2010 8:08 am

Here is something a bit different.

http://www.stringbike.com/

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by BNA » Fri Sep 24, 2010 10:02 am

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Re: Stringbike

Postby Boognoss » Fri Sep 24, 2010 10:02 am

Interesting. I'll stick with a chain though :)
n = 3 for now

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Re: Stringbike

Postby scotto » Fri Sep 24, 2010 10:29 am

rreminds me The Goodies string promotion.

clearly i wasted money on that old school metat based chain drive system
[youtube]http://www.youtube.com/watch?v=7rlOSjpIbFs&feature=related[/youtube]
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Re: Stringbike

Postby soc » Fri Sep 24, 2010 10:33 am

Hold on a sec, isn't this a family friendly forum? :shock: :shock:

Last but not at least the STRINGBIKE® is a beautiful piece of art, and the reciprocating movements of the swinging members with the never ceasing winding of the ropes provide a nice visual impression.
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Re: Stringbike

Postby il padrone » Fri Sep 24, 2010 10:43 am

I think I may have to add this one as a sixth to the Five Horsemen of the Cycling Apocalypse :shock:

http://www.angelfire.com/art3/levercycle/

Frazer Robike
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Rowbike (apparently invented by the same guy to develop rollerblades)
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The invention dates back to 1905 at least

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There were such drive systems in the 1890s as well. The Farrens have an 1882 Dublin trike with lever drive and a Lever Chainless Bicycle from 1895 in their collection.


Apparently it's even been on the New Inventors - gotta be a recycled invention then :roll:



The (new) Six Horsemen of the Cycling Apocalypse

- shaft drive
- automatic gears
- airless tyres
- funky saddles
- elyptical chainrings
with added
- lever drive

:P :lol:
Riding bikes in traffic - what seems dangerous is usually safe; what seems safe is often more dangerous.
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Re: Stringbike

Postby rkelsen » Fri Sep 24, 2010 11:42 am

il padrone wrote:The (new) Six Horsemen of the Cycling Apocalypse

Uhhh... this isn't a lever drive system. Watch the videos on the website.

The rider's feet move in circles (as if riding a bike with regular cranks), unlike the lever systems you've mentioned. For all intents and purposes, it looks like the rider wouldn't even notice the difference between this and a normal bike.

It looks cumbersome and complicated, but I'd give it a go. If a string were to snap, could it cut your leg?
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Re: Stringbike

Postby il padrone » Fri Sep 24, 2010 11:49 am

For sure, the pedal action is not lever-style, it's rotary. However the drive is just the same as all the other lever-drives, just using string not chain. This type of drive has a number of disadvantages over the good old rotary chain.

I remain very sceptical :|
Riding bikes in traffic - what seems dangerous is usually safe; what seems safe is often more dangerous.
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Re: Stringbike

Postby rkelsen » Fri Sep 24, 2010 11:59 am

il padrone wrote:However the drive is just the same as all the other lever-drives, just using string not chain.

OK, but this design seems more elegant in its execution. It certainly is far less awkward to use...
il padrone wrote:I remain very sceptical :|

I'm not disagreeing with you. The thing that kills it for me is that you can't use it on a standard frame.
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Re: Stringbike

Postby Uncle Just » Fri Sep 24, 2010 6:02 pm

I'm with you Pete. Ridiculous idea that overcomplicates the drivetrain for no better result.

Notice in the You tube video they show the front quick release lever rotating as well! :roll:
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