FYI A Healey friend removed a fitted axel from a Big Healey. seems it
might be Chrysler giving note to left hand thread lug nuts. Contact me off
line if there is any interest in this "Bugger"
"Jack W. Drews" wrote:
> Bill Babcock wrote:
>
> >
> >
> > I really doubt that is happening guys--if the bearing housing was
> > flexing that much it would crack the bearing race, and I don't think
> > we've ever seen that.
> >
> > -----Original Message-----
> > From: Jack Brooks [mailto:brooks@belcotech.com]
> > Sent: Wednesday, August 02, 2000 10:54 AM
> > To: Jack W. Drews
> > Cc: Friends of Triumph
> > Subject: RE: TR axle breakage - my theory
> >
> > > Every hub / axle assembly that I've taken apart has exhibited a
> > puzzling
> > > thing. The surface appearance of the axle on the inboard third of
> > the
> > > mating surface has been different than the outer 2/3 or so.
> >
> > Jack,
> >
> > If the problem is caused by flexing and "bell mouthing", as you
> > suspect,
> > the different appearing surface of the axle may hold the answer. Do
> > you
> > (or other FOT) have access to high magnification microscope or a SEM
> > (scanning electron microscope)? I am wondering if the difference in
> > the
> > appearance on the taper might be fretting or some other surface
> > condition
> > which would reveal the mechanism causing difference in appearance and
> > possibly the failure too.
> >
> > Please keep us informed of what other clues you may find. Maybe we
> > can
> > help.
> >
> > Regards,
> >
> > Jack Brooks
> > 1960 TR3A
> > 1974 Norton 850 Commando
> > Hillsdale, NJ
> >
> >
>
> I'm not talking about the bearing housing. It's the HUB. The portion of
> the HUB inboard of the flange where the wheel bolts on. And most of the
> axles are breaking about 1/2" down inside the HUB -- at the end of the
> keyway.
>
> In fact, want to buy my old bearing? I need the money.
>
> Of course, this theory, like the last one, may not be valid.
>
> --
>
> TR6 -- 29 and still running
> TR4 -- 39 but no longer racing
> uncle jack -- temporarily sidelined
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