Very nice Steve. An Amal mk2 concentric if I'm not mistaken. Wonder if 2LS front brakes are a popular mod on that bike. It's what I have on my one year newer Velocette. Bet yours starts more easily though
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone