Originally Posted by steveknight
I have a burley limbo it uses two idler pulleys for the chain. When you shift toe the second and third chain ring you feel a rumble. I found out it is the chain doing it the rollers on the chain on a flat surface. I think it robs a bit of power too.
http://www.terracycle.com/parts.htm they are nice and locak so ican see them in person but spendy.
I was thinking of making a bracket to hold two pulleys from rd’s and run the chains on them. I would have to play a bit with how the chain runs but think it would work?
I don't think jockey pulleys would hold up very long. Hostelshoppe sells a
Greenspeed idler, which is a plastic version of the fancier Terracycle one. Or rather, the Terracycle model is an upscale version of the Greenspeed. I'm not sure about ganging two of them on a single shaft, but I suppose it could be done if you use a bushing between them.