Recently gave PA 1823 one of her longest runs to-date... about 80 miles.
When I fired her up Sat AM to go to local Monthly MG Club meeting, was greeted
by a loud knock which rose and fell with RPM. BIG sinking feeling in stomach!
Later, we determined the knock to come from the top end and found the
flexible coupling on the vertical to have broken through one of the 4 bolt
holes.
New part on the way from S&V but curious... has anyone else ever suffered
the same? Do I have something cranked down too hard? I have done a lot of work
in this area from the time it swallowed the brass distributor drive gear,
rebuilding dynamo after cutout stuck...and addressing oil leak down the cam
drive.
Thoughts about coupling failure? Just fatigue after 74 years?
Thanks
Don B.
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