I haven't gotten around to messing with the drive train just yet on my 70's Moto Grand Touring, but I have noticed in checking out what seems to be working and what isn't that the rear derailleur either needs some work or needs to be replaced. It is a Hurét Alvit. From what I am beginning to read about these things in the archives of these forums is that they are not very good. Is this the case? Should I just replace it without trying to get it to work? What should I replace it with if I do replace it? Right now the bike does not have indexed shifting, should I look into upgrading that as well?
While I want to keep every "original" (or at least somewhat from that time period), I do want this bike to become my commuter bike and general city bike so I do want to put some mileage on it.