What wheel bolts have I got..?

for those with Series MM sidevalve cars produced between September 1948 and February 1953
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Squeezebox
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What wheel bolts have I got..?

Post by Squeezebox »

I need a few new wheel bolts for the MM. The correct ones for the car have a head that is 5/8" across flats and what looks like a 7/16"UNF thread - but can anyone confirm? An example of the other type of nut (i.e. wrong for my car) that I have has a larger hexagon head if this helps.

Mike
Mike Gott. 1968 4-door saloon, Ariel and Velocette motorcycles - and a 5 ton Ruston and Hornsby narrow gauge railway loco........
mike.perry
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Re: What wheel bolts have I got..?

Post by mike.perry »

The lowlight MMs, up to about 130000 had BSF treaded bolts with 5/8 A/F heads, possibly larger on very early cars. The later UNF bolts also had 5/8 A/F heads. Early S11s had 3/8Whit heads, the same as the M1000. Andrew Stone was looking into large headed bolts. Graham discusses the subject under Tech Info
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Squeezebox
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Re: What wheel bolts have I got..?

Post by Squeezebox »

So it sounds like I need some UNF. Thanks Mike.
Mike Gott. 1968 4-door saloon, Ariel and Velocette motorcycles - and a 5 ton Ruston and Hornsby narrow gauge railway loco........
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Re: What wheel bolts have I got..?

Post by mike.perry »

Contact Andrew Stone and find out what he is doing, there is no point in both doing the same thing. I would expect that there is also a demand from other MM/S11 owners. The larger the batch produced, the lower the unit cost.
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Squeezebox
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Re: What wheel bolts have I got..?

Post by Squeezebox »

Will do. I've had quite a game finding some off the shelf - best I've managed is some second hand ones at Bath.

Mike
Mike Gott. 1968 4-door saloon, Ariel and Velocette motorcycles - and a 5 ton Ruston and Hornsby narrow gauge railway loco........
mike.perry
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Re: What wheel bolts have I got..?

Post by mike.perry »

Alternatively read my solution under "Loose Wheel Bolts" by Dean in "Other Section"
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