Home › Forum › Ask A Member › 1956 Johnson 30 HP. shear pin brass or monel? › Re: 1956 Johnson 30 HP. shear pin brass or monel?
August 20, 2015 at 5:05 pm
#22404
A tid-bit of info on those props & pins. Since the prop can spin on the hub under extreme overload, it can tend to move off the end of the hub. The long drive pin sticking out both sides of the hub prevents that from happening. The thrust washer between the pin and prop acts as sort of a bearing. I have seen lots of cases where a short pin was used and the prop spun out over the ends of it, so you couldn’t get the pin out. A real inconvenience if the pin is sheared.