Mechanical engineers: Cover your eyes.

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traineefarmer
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Mechanical engineers: Cover your eyes.

Post by traineefarmer » Tue Jun 02, 2015 9:07 pm

I've nearly finished rebuilding a spare PG1 for the coupe and the final stage of the build is shimming the diff and mainshaft. Setting the clearances properly required a 0.7mm shim. Obviously these and pretty much every other size of PG1 mainshaft shim are NLA, so I had to find a way to shrink a 0.9 that I had taken out to size.

A couple of local precision engineering companies that I knew to have the correct machine for this (a magnetic bed surface grinder) told me to they weren't interested, so I present my solution:

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Superglue, cable ties and, after my previous attempt at making a homemade magnetic chuck came loose at 900rpm and smacked me in the face, much blood and swearing.

For those interested* this achieved an accuracy of 0.03mm.
Tom.

'97 Vitesse Coupe
'03 XC90 D5

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vito
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Re: Mechanical engineers: Cover your eyes.

Post by vito » Tue Jun 02, 2015 11:21 pm

Bodgtasia rules ........... :D
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Richard Moss
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Re: Mechanical engineers: Cover your eyes.

Post by Richard Moss » Wed Jun 03, 2015 2:54 am

Great improvisation, Tom
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aryan57
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Re: Mechanical engineers: Cover your eyes.

Post by aryan57 » Thu Jun 04, 2015 9:11 am

As an ex Precision Engineer myself, congratulations. I mean the shim, not smacking yourself in the face with a spinning chuck, that was pretty foolish, to put it mildly. Dying is no way to make a living!
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