crankshaft thread size

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Hi,
can anybody tell me the thread type that holds the rotor on to the end of the crankshaft, is it 5/8 UNF ?
Terry
 

L.A.B.

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5/8" UNF is 18 TPI.
The Commando rotor nut/crank thread is 20 TPI I believe, possibly 5/8 - 20 TPI BSCycle thread (as most diameters of Cycle thread were 26 TPI).
 
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Hi there, yes I can confirm , it is 5/8 20 tpi, had just bought the dye from rdgtools.co.uk three days ago , fast sending and cheap ..................
 
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hopefully its just the nut has been crushed a bit, I've bought a new one. but if its not I was just wondering where I would get a 20 TPI die from, so now I know,
thanks
Terry
 
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