Armours (Bournemouth) used to sell two different pipes, one for Brum swinging-arm bikes and one for rigid frame bikes, but I don’t know what the difference was. Their Scott silencers also came in two versions, and the Brum one had a mounting lug on the body, whereas the one for rigid-framed bikes was plain, and needed a circular fixing clip around it. Strangely, they still list Scott pipes in their adverts, but a telephone enquiry usually gets a rather terse refusal ! Odd….
Brian
