I agree David, the spacer adds a lot of strength to the assembly. I still use
roller bearings. :-)
> On Oct 26, 2021, at 10:10 PM, David Doiron via Spridgets
> <spridgets@autox.team.net> wrote:
>
> Well Folks,
> I have been caught with my hair trigger showing.
> I fired a shot across the bow too soon!
> I failed to notice that the Moss kit uses a spacer.
>
> That makes all the difference.
> Moss sourced bearings are purpose fitted, and should be used with the spacer.
> American cars didn't use spacers so mechanics who were familiar with that
> arrangement would be tempted to leave them out.
>
> Back when I did it, the only source was a generic bearing supply, and
> THOSE bearings were not compatible with the spacer. (which I luckily kept!)
>
> And yes, I did the conversion when the MkII came out, so my stub axles were
> the
> early version. Ergo the metallurgy was not as strong as the later stub axles.
> BUT
> Since used items are a common source of stub axles these days, you might
> be looking at early versions. It would be safer to use the later part #s.
> (If anybody wants those numbers ask me).
>
> I have never seen an aluminum spacer. All the factory spacers I've seen
> were dimensionally stable cast iron.
>
> Regarding the statement that the threads would strip before the nut was
> tight enough to add strength to the stub axle, I say show me the math.
> Every stress diagram I can imagine indicates that the spacer adds strength.
>
> W David Doiron...ex BMC mechanic
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