Top Picture
These are Rapide front drums with the OD skimmed to run true and the alloy muffs shrunk and bolted. The A twin front wheel had these in period pictures around WW2 as it also had a black out headlight. They were destroyed in about 1958 when the rider T-boned and Edsel! I remade them from big pieces of alloy plate.
Bottom Picture
These are TTR brakes which were reproduced in the US sometime possibly in the 70's or 80's.
The TTR brakes were cast iron drums bolted to the alloy fronting plate (I call it a fronting plate as it is on the other side of the backing plate!) which had the bearing mounts integral with the plate. A's generally have independent bearing housings which are through bolted with the drums and hubs.
These are Rapide front drums with the OD skimmed to run true and the alloy muffs shrunk and bolted. The A twin front wheel had these in period pictures around WW2 as it also had a black out headlight. They were destroyed in about 1958 when the rider T-boned and Edsel! I remade them from big pieces of alloy plate.
Bottom Picture
These are TTR brakes which were reproduced in the US sometime possibly in the 70's or 80's.
The TTR brakes were cast iron drums bolted to the alloy fronting plate (I call it a fronting plate as it is on the other side of the backing plate!) which had the bearing mounts integral with the plate. A's generally have independent bearing housings which are through bolted with the drums and hubs.