I have a vintage two speed tandem Schwin Bicycle. I have had it restored. However, the two speed hub does not shift gears when back pedaled. Does anyone have a solution to remedy this or know where I can get a replacement hub with the two speed feature. Can't get up the hill in low gear.
Thanks,
It looks like they typically have trouble shifting under load. This is just in general.
Reminds me of many lesser Shimano derailleurs.
Someone mentioned that they are best shifted with finesse. You want to shift before you approach a climb.
I would also recommend lubricating the mechanisms before each ride. If they are old, they will just generally have issues at the pivots due to thermal breakdown from friction. Lubricating before each ride can help a little—although it's not a cure all.