Rear Sprocket Drum 1928-1935
£378.00
Rear sprocket drum for 1928 to 1935 models. From 1928 -1931 it replaces the earlier drum (part 4587) which used locking pins with 5/16 cycle threads (part 4590) therefore the later BSF pins available on this shop should be purchased.
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S1-6782
Manfactured from EN24.
This fits models 1932 -1934 and probably 1935. The original drums were fited with a peaned in non standard bearing part number 4610 (2 3/4x 1 1/4x 3/8 in). This new drum is fitted with a bearing ring sleeve (value £25.00) to enable fitment of an available standard bearing.... see item S1-3546 having 2 1/4 outside diameter. A sleeve part number S1-4134 is available to adapt original drums to take this available bearing.
The drum is drilled to take locking pins part number S1-6709 with 5/16 bsf threads. Available from this shop.
S1-6782
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Rear sprocket drum for 1928 to 1935 models. From 1928 -1931 it replaces the earlier drum (part 4587) which used locking pins with 5/16 cycle threads (part 4590) therefore the later BSF pins available on this shop should be purchased.