[Healeys] Front wheel bearing spacers. New blog post.

[Michael Salter]

Hi thanks for your comment. If possible I would really appreciate it if you
would add it to the comments  on my blog post.
https://precisionsportscar.com/austin-healey-front-wheel-bearing-spacers/
Interestingly my understanding of "Magnaflux" testing is entirely
different. The "magnaflux" system we used in the aircraft industry
subjected the ferrous part to a magnetic field and immersed it into a bath
of spray containing iron particles. The particles would gather at the edges
of any cracks.
I was involved with a comparison test of "Magnaflux" vs penetrant dye
testing on Rolls Royce Dart engine parts and the general conclusion was
that the results achieved using "Magnaflux"were very much more dependent on
operator skill than penetrant dye although the penetrant system took a lot
longer.

M


On Wed, Jan 18, 2023 at 3:55 PM Bob Spidell <bspidell at comcast.net> wrote:

> Another good post, Michael. A couple things:
>
> - To the best of my recollection--I haven't gotten in there in a while--my
> BN2 has the spacers. I think it was one of the later cars so maybe they
> were added at the end of the run? Nothing else about the car makes me think
> any of the previous owners were particularly diligent or careful with the
> car (though it was in relatively good shape when we bought it).
>
> - If you don't have facilities for using a penetrant dye--what us Yankees
> call 'magnaflux'--the 'ring test' can sometimes suffice. Suspend the stub
> axle, preferably with wire, and give it a sharp rap with a hammer, wrench,
> etc. The axle should ring, like a tuning fork, but if you get a dull thud
> you likely have a crack in the axle. My dad took our stub axles up to BCS
> to have new bushings installed and reamed, and Dad said Norman Nock was
> impressed by Dad's knowledge of the ring test (Dad was an Old School
> mechanic himself).
>
> - I always assumed if a part wasn't absolutely necessary the BMC bean
> counters would have it removed; maybe they realized keeping the spacer, for
> the BN4s and later cars was cheaper than replacing broken stub axles?
>
> Bob
>
>
> On 1/18/2023 8:00 AM, Michael Salter wrote:
>
> https://precisionsportscar.com/austin-healey-front-wheel-bearing-spacers/
>
> _______________________________________________
>
>
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation  $12.75
>
> Archive: http://www.team.net/pipermail/healeys
> http://autox.team.net/archive/healeys
>
> Healeys at autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/michaelsalter@gmail.com
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20230119/1885f891/attachment.htm>