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John Stevenson23/03/2017 19:00:56
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I did a 12mm eight start nut a while ago for Mr Rollsy Royce because they couldn't do it.
SillyOldDuffer23/03/2017 19:54:02
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Posted by John Stevenson on 23/03/2017 19:00:56:
I did a 12mm eight start nut a while ago for Mr Rollsy Royce because they couldn't do it.

Gosh! Did they say what it was for?

Dave

Allan B23/03/2017 21:40:13
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Not quite got to that standard yet, don't think my internal threading tool would go down that lol, but might have to have a go 😀

Allan
John Stevenson24/03/2017 00:56:18
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Posted by SillyOldDuffer on 23/03/2017 19:54:02:
Posted by John Stevenson on 23/03/2017 19:00:56:
I did a 12mm eight start nut a while ago for Mr Rollsy Royce because they couldn't do it.

Gosh! Did they say what it was for?

Dave

It was part of the rise and fall mechanism off one of the crack detecting machines.

Neil Wyatt24/03/2017 01:20:00
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Posted by John Stevenson on 24/03/2017 00:56:18:

It was part of the rise and fall mechanism off one of the crack detecting machines.

Amazing to think they used to rely on specially trained police dogs for that.

Neil

John Stevenson24/03/2017 01:26:09
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Wrong crack Neil.

I meant this one.

 

Edited By John Stevenson on 24/03/2017 01:27:56

larry Phelan24/03/2017 08:34:05
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Hi Allan,

Thank you so much for those kind words !! Do let us know how the 4 start works out,cutting the inside thread for that should be fun. Did you have any bother fitting the nut to the twin start?

Allan B24/03/2017 08:40:43
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Hi Larry

I will have a play with it early next week and put some pictures up.

I did have to go back to the nut and do another clean up pass on each thread just to ease it off, as in the beginning it was a little tight, but it's now very smooth.

Allan
"Bill Hancox"24/03/2017 09:08:48
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Posted by John Stevenson on 24/03/2017 00:56:18:
It was part of the rise and fall mechanism off one of the crack detecting machines.

Awesome to say the least!!.... I would love to see a short video of the unit in actual use at the speed of use. It would definitely raise and lower a window in a RR in very short order.

larry Phelan24/03/2017 11:07:23
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544 forum posts
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Hi Allan,

That,s exactly what Sparey said about the fit of the nut,that one or other of the threads could be tight,but there was no way of knowing which one,so the only way was to take another pass from one and try it. If that did not work,take a pass from the second thread and try again.

You,ve really got me interested in this stuff now,time to leave the grass for another day. Cheers !

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