Originally Posted by
kenh3497
Does the circlip have a single tang and how was that tang oriented? The tang should be virtigal in relation to the cylinder bore. If horizontal, the tendency is to vibrate and weaken with the piston motion being the cause.
Ken
Ken,
The clips have twin tangs. They are the type where you squeeze the tangs to insert into the slots, just like many engines use.
Another way to retain the wrist pin is using a circular retainer made from spring wire. If I recall, Webra used that style and it worked great. The natural springiness of the wire really pushed hard into the groove with little chance of vibrating loose. This isn't fool proof either but might be better than circlips.