Lambretta hub stud thread size.

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Minority
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I have seen this quoted as 11mm x 1 for Italian hubs, but on taking the studs out of genuine SX200 front hub in preparation for fitting SIP Rims, I reckon that they are 10mm x 1.
Anyone have the definative answer?
(I know if the SIP studs fit who cares, but I am having to drill one stud out (there's always one that won't come out :( ). I only have normal right hand thread taps so I want to get a left hand tap incase I have to clean up the thread).
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rosscla
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I have a m10 x 1 LH tap which I used to clean mine up and the studs fit fine after.
"Our dilemma is that we hate change and love it at the same time; what we really want is for things to remain the same but get better."
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Minority
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Main scooter: Li230 S3
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Thanks for that mate, I managed to drill out the stud without damaging the thread at all so didn't need to get the tap anyway.
Re-measured the studs that came out (the easy ones not the last pig that I had to drill out) and definately 10 x 1.
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