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Richard Parsons25/03/2011 06:01:59
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Ian Checking the thread angle is quite easy if you have a good quality set of thread gauges (not those made by the yellow peril). I use the Whitworth set. If I cannot find a match its metric, so I try the metric gauges, if it don’t fit the metric it’s a BA (47.5°. or God knows what. If it fits the Whitworth gauge I hold it up to the light. A good fit it is Whitworth/BSF (55°. If it is not a good fit it is a ‘Unified’ (60°.


Over here in Hungary much of the old Russian army gear is ‘Unified’ not metric. This seems to drive the locals ‘round the twiddle’. There was heaps of the stuff about, but the Orientals turned up with suitcases of forint and everything disappeared including some new pylons they were putting up.
Regards

Dick
Richard Parsons25/03/2011 06:03:36
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645 forum posts
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Confounded auto insert "smilies".
Edited By Richard Parsons on 25/03/2011 06:03:56

Edited By Richard Parsons on 25/03/2011 06:04:33

Ian S C25/03/2011 09:10:12
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Dick was it Hungary where some one nicked a bridge afew years back? Ian S C
Ian Parkin25/03/2011 12:04:55
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Well after all you guys fine advice, I decided to buy a chinese die to match my tap so it will be 12mmx1.0 LH and hopefully just run the die down the spindle so it will be reasonably standard then ...just the delivery time from china...it was only £8 in total though.
 
Problem with making a new spindle is thats theres a bearing cup threaded onto the middle of the spindle so making a new one of those starts getting complicated ...so if i just leave the bearing cup on the oversize thread and cut down the exposed thread on each end.
JimmieS27/03/2011 14:53:49
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Hi Ian
 
Just came across this site which you may know about.

http://terrot.france.free.fr/index.php?page=accueil
 
Jim
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