Surly if he's going to be using a hub gear the chain line won't be changing?
No, but the chain still flaps about, and it's going to need a sprung tensioner to accommodate the variation in chainstay length when folding, which will probably make matters worse. There is an increasing number of chain guides on the market serving the 1×n MTB and CX crowd, so it's not the end of the world.
No, but the chain still flaps about, and it's going to need a sprung tensioner to accommodate the variation in chainstay length when folding, which will probably make matters worse. There is an increasing number of chain guides on the market serving the 1×n MTB and CX crowd, so it's not the end of the world.