[Fot] variation in Timken carrier bearing width?

[Peter Vucinic]

Jason,

The variation will be due to the ANGLES that the bearing cup and cone race have been ground too and the roller diameter/angles.

So, it doesn’t take a lot of angle/diameter change over all of the components to alter any pre-load/shimming dimensions.

Miniscule angle changes will either have the cones closer together or further apart.

You have to measure every time!

 

  

 

 

"You can Make a Small Fortune From Motor Racing. As long as You Started With A Lage Fortune!"

Kind Regards

Peter Vucinic

TR4 - TR7 V8 - Spitfire MkII

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From: Fot [mailto:fot-bounces at autox.team.net] On Behalf Of Jason Sukey
Sent: Thursday, 29 September 2016 10:59 PM
To: FOT list
Subject: [Fot] variation in Timken carrier bearing width?

 

Has anyone else noticed rather large variation in carrier bearing width's when rebuilding a spitfire differential?  The one I'm building right now, I've replaced what I suspect are the original bearings (Timken England) with brand new Timken USA bearings.  In order to reach the required .004" preload, it will require .012" LESS total shim than what was in there originally.  That seems like a big difference with the only variable being new bearings.  I'm using the same housing, same carrier, the bearings visually look to be fully pressed home.  Anyone else experience this?

 

Thanks,

 

Jason Sukey

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