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dynamo woe

To: <healeys@autox.team.net>
Subject: dynamo woe
From: "Allen C Miller, Jr." <acmiller@mhcable.com>
Date: Tue, 7 Sep 2004 20:19:17 -0400
Got in a wonderful 300 miles on the 100M during the Lime Rock festival, and
the car is performing fantastically apart from a few easily corrected
glitches.

One larger problem, however: the rear generator ear has cracked across the
hole, and while the generator is firmly in place, I need to assess damage
control.

Is there a source for generator (excuse me, dynamo) endplates? I tried British
Car Specialists, and they indicated this is a commonplace fault, and that they
are out of plates, and are sending plates out for rebuilding. Moss has the
predictable "N/A" on old generators, let alone the parts. My unit was just
rebuilt, and is putting out an excellent charge, so I don't want to give it up
without a fight.

If I have to repair the ear, I would prefer using Alumaloy, which I can do, vs
sending out for a heliarc welding repair. I've had good results with a variety
of aluminum repairs, but not on such a high stress structure. The literature
claims 90% the strength of virgin metal, and I've also heard that BN1 bell
housings ofter get ear repairs with Alumaloy.

Any thoughts? Has anyone tried the alloy repair route before on a generator
end plate?

Allen Miller.

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