Family reference

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A workshop-grounded walkthrough of scope, tools, time, model choice, and the pitfalls first-time restorers hit hardest — written for the reader who has not yet picked a bike.

Open the getting-started pillar

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BSA DOHC single-cylinder (1938-1963) -- DBD34 rigid-rear (1938-1948), YA / ZA / ZA-B Golden Flash plunger-rear (1949-1958), DBD34GS Clubman swinging-arm (1956-1962), 1959 Catalina scrambler with Lucas RM13 alternator + negative-earth switchover, and B50SS Clubman continuation (1961-1963). DOHC shim-under-bucket wedge spec (I 0.10 / E 0.15 mm), BTH fotQ versus Lucas W2 / W3 stand-alone magneto split, and the 1956 swinging-arm chassis pivot.

Open the BSA Gold Star Restoration Guide

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