On 27 November 2011 18:16, gene heskett <ghesk...@wdtv.com> wrote:

> at a 1mm undersize, that matches what I am thinking too.  It would have to
> be made not from bearing steel, but a spring steel alloy.  This flex has to
> be allowed for while restraining its rotation somehow.

I don't think that it would need to be anything particularly exotic,
the wall is deliberately fairly thin to keep the surface strain down.
>
> Yes, McCullough sold a boatload of those super chargers, but during the
> time of their popularity, until the more efficient exhaust driven turbos
> showed up, their operational lifetime was far less than the engine they
> were feeding unless it was burning dynamite in a full race build, 5 to 10k
> miles maximum on a street engine.  There was at one point, a quite thriving
> rebuild industry around them in the early 60's & into the 70's.

The one I was looking at was for fitment to a 2006 model year car (it
didn't make it into production).
The picture at the bottom of this page:
http://www.jalopyjournal.com/forum/showthread.php?p=6764656
Seems to indicate a rather different design.

> With, I assume some sort of a 3 piston squeezer to loosen it enough to put
> the new shaft in. :)

Yes, assembly is an unsolved question. I was imagining that it would
probably be possible to wedge/shim the three ball bearings apart, push
in the shaft, and then roll the shims out.
(Actually, using the lathe  3-jaw chuck to deform the outer ring into
the correct shape would probably be easier)

-- 
atp
The idea that there is no such thing as objective truth is, quite simply, wrong.

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