Interesting Alastair. Phil Bleazey pioneered a chain drive conversion for his M3W and whilst it was successful in its own right, I got the impression it wasn't the improvement over the factory belt drive he expected.
Interesting video here on back to back dyno test of both drive mediums on same motorbike.
Not to mention belt having up to four times weight reduction, four times greater psi tensile strength, little or no lube and stretch maintenance, less snatch etc. Only let down is belt less tolerant of suspension articulation when front sprocket and swing arm pivot not concentric, leading to dynamic drive length variations.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone
