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MG Midget and Sprite Technical - Front wheel bearings

Having replaced the front wheel bearings 11 months ago and having gone no more than 1000 miles I find that I'm geting rumbling from the same wheel again. Looks like I need to replace again. I got the first replacement from and mg specialist locally. Does anyone know where to get decent bearings? ('71 1275 Sprite)
Steve Church

At the moment if it were me I would contact this company and ask them for a:

3MJT17

and a:

34LJT25

These were the original bearings and if replaced by these then you should have no trouble.

There are cheaper bearings around but these will always be a problem
Robert (Bob) Midget Turbo

Don't know if it is to difficult, but there is a guy in Copenhagen, Denmark, who supplies closed bearings.

I had the same problem with my race midget, but after I got his bearings I've had no problems.

It is this guy:

http://www.mgparts.dk/

Ole
Ole Aaen

Er, Bob, which company would that be then!?
Steve Church

This one. LOL

Sorry

http://www.ransomeandmarles.co.uk/references.html
Robert (Bob) Midget Turbo

in my opinion the trustside for the inner large bearing should be facing the oil seal and trustside for the small bearing should face towards the nut.

on a proper bearing the trust is taken by the higher, thicker side of the outside
race.

On some bearing I notice only a fatter trust part on the smaller inside race.

is there somewhere a sectioned drawing of the Midget hub set up incl correct bearings availble on the internet I wonder ?
Bas

It is funny that you should ask for that, Bas, because there is such a site, and it does a pretty good job of explaining how the bearings work in a Midget hub (and why one should not install the bearings with the thrust side facing the wrong way, or leave the spacer out):


http://smithtr6.com/bearings.htm



Norm
Norm Kerr

ahh thnx Norm, been well investigated but clearly the trustfaces should be facing the other way then just described by me above
Bas

http://smithtr6.com/bearings.htm

Are you actually all considering this radius issue mentioned in the above website ?
Bas

yup,
in fact, that radius is the reason why we are advocating to use the OEM ("RHP") bearings, instead of the "equivalent" NSK or Timken ones that have too sharp of a radius there. This discrepancy is very hard to tell during assembly because you can't "see" it (the bearing must be pressed on/off to do a trial fit), and a corner radius can be hard for someone without a set of radius gauges to measure even if they knew to check for it.


Norm
Norm Kerr

I never imagined what this would come to when I first noticed the space behind a bearing I had placed on the stub axle now more than a year ago.

Norm, I would like to wrap up that web page. I wonder if you might write something about the pre-load for the bearings and send it to me? I think you are better informed about that.

I will get some other things together and get this done, before I forget things. Old age you know.
tomshobby

Tom,
I'll send you an email with some suggestions I was thinking about for you!

":oD

Norm"tech support" Kerr
Norm Kerr

Norm, I see your e-mails. Got home from a days drive and the heat has pretty much worn me out. I will read them tomorrow. BTW - Thanks
tomshobby

This thread was discussed between 04/07/2010 and 18/07/2010

MG Midget and Sprite Technical index

This thread is from the archive. The Live MG Midget and Sprite Technical BBS is active now.