HOME and how to join Forum Open Area General Scott topics 1950 Flying Squirrel Primary Chain Adjustment Re: Postwar Shipley Primary chain

#7827
Ted Robinson
Participant

A 1/4 inch is ample movement for the adjustment, if my memory is correct the chain is 69 links long including the spring link. there is nothing wrong having a Cranked link (or as you refer to a half link) in the chain so long as it is fitted correctly ie. no tightness on the plates. The weak point is the spring link,on some inferior ones the spring clip is a loose fit on the rivets and due to the movement will eventually fatigue. The use of cranked links is common practice in engineering, if you check a Renolds chain catalogue all manufacturers British and foreign have at least one or more models that use a cranked link.