Hi
Can anyone tell me the correct chain size modern equivalent for 1937 B22 chain, cant see it in parts list, but instruction book says it should be 1/2 x .305" .
Been googling various chain sizes all afternoon, nearest seems to be bs08b-1, but not sure of roller sizes
tried a 1/2 x 5/16 chain on sprocket but rollers did not seem to sit properly
Have you contacted the chain man?
Hello
Could it be 420 chain that you are looking for. There is 0.5 and 0.305. 1/2 x 5/16 is 428 chain.
Chain Size: 420
Pitch (P): 0.500"
Roller Width (W): 0.250"
Roller Diameter (D): 0.305"
Feked.com says:
"
125EBSR 1/2" x 3/16" (P x W) standard 420 chain equivalent to Renold 110044.
Standard roller final drive rear chain.
Note: the 420 chain measures closer to 1/4" between plates, the 415 chain is closer to 3/16"
"
J
1/2 x .305 is a common size - used on A7/A10 swinging arm primary - and should be readily available.
Got a length of bs08b-1 and checked fit on sprockets ,seems good, primary chain from a different model may have worked on primary, but would have been too short for final drive. Will be a couple of days before I can get it fitted though.