In my message I should have made it clear that I was talking about roller
bearings used without a correct spacer as proposed by the original poster.
If you use a setup that maintains a spacer under compression then that
should
be fine.
Mike
-----Original Message-----
From: Brian Evans <brian@uunet.ca>
To: Rich.A.Wagner@mcdermott.com <Rich.A.Wagner@mcdermott.com>
Cc: spridgets@autox.team.net <spridgets@autox.team.net>
Date: Saturday, February 28, 1998 1:39 AM
Subject: re: front wheel bearings
>Mini's use the same kind of front bearing setup, and the bearings and
spacer
>were sold as a matched kit - the spacer was touted as not interchangeable
>between different pairs of bearings, let alone different manufacturers of
>bearings. Now, new bearings come with shoulders to replace the spacer, and
>again are matched sets. Key is to get the correct preload, and I have no
>idea at all as to how to measure that for ball bearings. I suspect that
the
>way to do it is to install the bearings, measure the distance between the
>inner races under low load, and then make up a spacer one or two thousands
>below that distance. And as Rich points out below, the spacer effectively
>locks the inner races of the bearings together, transfering load from the
>outer bearing to the inner, reducing the load on the outer part of the stub
>axle.
>
>Brian
>
>
>
>
>At 09:21 AM 2/27/98 -0500, you wrote:
>>Some responses to this topic mention eliminating the distance piece
>>when roller bearings are substituted for the ball bearings. While
>>this allows for adjustment like most other cars, I appears to greatly
>>increase the stress on the stub axle - like by a factor of the square
>>of the ratio of the diameter of the distance piece to the diameter of
>>the stub axle or more ( my structural mechanics course was way too
>>long ago for me to remember the equation.... jeeze most of these cars
>>weren't even built then....) Anyway, the WERACE roller bearing kit
>>instructions made a big deal of making sure you use the distance piece
>>to prevent axle breakage.
>>Rich Wagner
>>74 midget
>>90 miata
>>
>
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