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21-10-2022, 04:25 PM | #8 | |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,853
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Quote:
It reminds me of the G50 and 7R crankpin nuts that they made at ERM. Those had a velux thread. (Or was it vernier?) The pitch subtly changed in the length of the nut, so when it was torqued up to something astronomical, it stretched the nut. Once in place the hexagon was machined off leaving just a collar. I'm assuming they were chopped off to get the crankpin out as the pin would not be re-used anyway.
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