Thread sizes
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Thread sizes
Hi does anyone know the thread sizes of the 2 crankshaft end covers for extraction please, that’s the threaded holes on the plates ,I want to make my own extractor bolts, any information would be most helpful and welcome,Thanks Roy
- Roger Gwynn
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Re: Thread sizes
5/16 UNC
Roger Gwynn, Membership Secretary, curator of the Machine Register and the works drawings. Director of Draganfly Motorcycles, Craven Equipment and Supreme Motorcycles mostly retired.
Re: Thread sizes
HI Roy,Roger G is half right,A standard 5/16 unc bolt is used,but the first 1/2 inch of the bolt is turned down to 1/4 inch with a 1/4 unc thread making it a shouldered bolt to stop you punching a hole through the end covers,Roger Lee and out
- Roger Gwynn
- Holder of a Golden Anorak
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Re: Thread sizes
Thank you Roger L, I stand corrected, you are of course correct.
Roger Gwynn, Membership Secretary, curator of the Machine Register and the works drawings. Director of Draganfly Motorcycles, Craven Equipment and Supreme Motorcycles mostly retired.
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- Posts: 53
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- Location: Bedford
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Re: Thread sizes
Thank you both , yes I had a 5/16 bolt, so realised that it was turned down , bought myself some thread gauges so should be ok now on, Regards Roy.
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