[Closed] much wierdness

T'other sprocket is a brake?

😯

😀

Brilliant stuff. Someone had too much vin or is it just a French fancy.

WTF

pedal backwards for a higher gear.

Look at the rim; the small sprocket is engaged when back pedalling and must therefore act as a brake.

is it for "easy" wheel removal ? the chain doen't actually run around the sprocket it sort of just rests on top and is removed by loosening the little idler gear ?

Aye...what the klunk/crikey said (after drawing it on a piece of paper).

stoner has it

http://www.solidstatedepot.com/wiki/index.php?title=Rob%27s_Red_Bike

thats probably an really old bike

No, I was wrong, wow... Imagine pedalling backwards to get up hills!

If you dropped the chain running from the front ring down to the smaller rear ring, then it would alter the gear ratio..Early 2 speed?

sharki - the chain runs over both sprockets simultaneously, but by being reversed in direction by the "tenionser thingy" it passes over one of them in the freewheel direction, whilst the other sprocket is engaged in the locked pawl direction. When you change the chain direction (backpedal) the engaged sprocket swaps over.

[IMG] [/IMG]
This one is a tandem. Three speed

jamie - is that not just a kind of derailled gear as opposed to the OP pic?

I can see that stoner. 🙂

But would it work if the chain was routed onto the smaller sprocket first then around the jockey onto the big one?

Pedaling backwards seems to me a touch less efficient, which during it's original design wasn't i suspect, a big thought..

[img] [/img]

http://en.wikipedia.org/wiki/Retro-direct

I think so, just cant work out how it shifts...

sorry sharki, dont get it.

Anyone else getting that weird (Esher?) effect with the red writing in TJ's post ?

Slightly raised on the righthand side.

[IMG] [/IMG]
Green grips

Another one of the first one
[IMG] [/IMG]

beautiful mudguards! And love the angles...