Hi Don!
Since we don't hear of this sort of failure very often ,if at all, I'd suspect
some sort of installation anomaly - or - material failure. A close inspection
of the bits should tell.
Bill Tantau
-----Original Message-----
>From: Terry Sanders <taterry@pacbell.net>
>Don, don't be discouraged. The factory file on my NA sez that the coupling
>broke in Banbury during its maiden voyage from the factory to the dealer in
>northern England!
>They sent a mechanic to fix it....I have his report from Jan 1935.
>Terry in Oakland
>
>--- On Wed, 11/5/08, DB35PA@aol.com <DB35PA@aol.com> wrote:
>From: DB35PA@aol.com <DB35PA@aol.com>
>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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