Originally Posted by
mkeller234
As always, very interesting bikes. That sliding freewheel is very strange, what controls it's movement? The fork on the Ephgrave is very nice looking, as is the whole bike. You sure get to see some cool things.
The quadrant lever on the top tube pulls the freewheel out while a spring inside pushes it out when the lever is released (I think it's that way round), while the hanger/guide/tension arm is static and keeps the chain where it is, forcing it to change cogs.
The Ephgrave is lovely - if you look you can see how thin the seat and chain stays are.