Bsa Rigid Frame. Engine Frame Numbers by Year Year Model Notes Engine Number Frame Number Notes 1938 500cc JM24 101 JM24 101 1939 500cc KM24 101 KM24 101 1949 350cc ZB32GS 101 ZB31 101 Rigid frames 1949 Continued. BSA were concerned that wear in the plunger suspension was leading to uncertain handling. Other points to remember. The engines during this period used a combination of a year letter and the range number. BSA B31 BSA B33 Motorcycles Engine Identification numbers.
These rigid frames were made for BSA by Reynolds something confirmed for me by Ken Sprayson. BSA M20 M21 M33 Spring Frame. The frame was available in rear rigid format but the more common option was plunger suspension adopted for the export market. Bsa Rigid Frame By reza 7 Sep 2015 Leave a comment Bonhams 1948 bsa b33 rigid frame bsa m20 m21 m33 rigid frame 1945 1948 544 801 c bsa plunger frame for unit bsa b31 b32 33 34 rigid frame. BSA B31 BSA B33 Motorcycles Engine Identification numbers. Early post war machines up to Z series had the frame stamped similar to the plunger or sprung frames eg.
Complete assembly available Please see link for further details.
Original bsa rigid frame still in original and un-opened packets Please see photos for specific items. Competition models offered the option of either a rigid or plunger frame. Postage cost is for the UK Mainland only from Delivered anywhere in UK if you would like a price for shipping elsewhere please ask before the end of the auction. Based on pre-war designs it used a single cylinder four stroke engine that displaced 348cc. Engine Frame Numbers by Year Year Model Notes Engine Number Frame Number Notes 1938 500cc JM24 101 JM24 101 1939 500cc KM24 101 KM24 101 1949 350cc ZB32GS 101 ZB31 101 Rigid frames 1949 Continued. BSA were concerned that wear in the plunger suspension was leading to uncertain handling. Complete assembly available Please see link for further details. High quality photography of Vintage Classic and Racing motorcycles.
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