My dear husband has been trying to figure out the source of a sound like a grinding rubbing noise. He has replaced both chains and both bottom brackets, but the noise is still there, worse then ever. It's especially noticeable when pressure is applied to the pedals.
He has finally figured it must be in the rear hub. He has finally given in and will be taking it to the shop that originally put the bike together, explaining to the mechanic what he thinks it is. He likes doing most of the work himself, but this is just a bit complicated for even him.
We are suppose to take the tandem with us to the Tour de Palm Springs, so hopefully it will be solved by then, otherwise we take our singles.