Of course, the drag cup is aluminium and won't be bothered by iron. And the magnet is out of the way.

That's just it...iron filings can stop the drag cup in its tracks...especially when they are hiding in the gap between the magnet and cup and underneath the cup...be very careful tho...

Aside: a fella I know used compressed air to expunge the iron filings...I was horrified...especially as air lines can be full of water...but he got away with it!

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"Show me the Mini!"

What an awesome read. My odometer stopped turning a few months back, and after reading this, I'm now 100% positive that I'm too scared to pull it apart for a look!

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Chuck Norris is the only person alive who can kick you in the back of the face!!
mooo, I'm a pig!

Quite interesting particularly the tools. Think I might have a go at repairing a few some time

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1960 Morris Mini Minor

As you well know...its not for the feint hearted or those with a hangover...steady hands Grasshopper

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"Show me the Mini!"

The only new parts I have found for these speedos is the chrome bezel and the glass. After that you have to rely on everything just being dirty and dried up and needing just a clean and lubricated. Parts have to be cannibalised but they are often worn out too.

Ummmm slightly newer Brit cars or low mileage units can be a source of good parts that can match...not easy, but possible

Another hint...

https://mgaguru.com/mgtech/dash/st106.htm

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"Show me the Mini!"