Even though I have 3 tandems none have a rear drum brake. I would like to install one on my '72 paramount tandem it has a campy 36 hole freewheel hub. I thought it prudent to ask the experts here before I spend the cash for a brake that may not be compatible or may not be able to be used at all. Thanks for your input in advance. I do live in the CO mountains and need more brakes than the calipers on the bike.

Peter