R.White Posted July 2, 2013 Author Share Posted July 2, 2013 Before getting in too deep, I thought I would try and clean up the threads. As a 16 tpi 3/8" Whitworth tap is such a close match to the UNF I mounted one in a tool post and with one pass the threads were restored. Although not perfect, there is enough contact to enable the plug to be tightened. Hope it lasts.Job done.My sincere thanks for all the excellent contributions from you guys. It's what makes this a great forum.Ray. Link to comment Share on other sites More sharing options...
Guest 1930 Posted July 2, 2013 Share Posted July 2, 2013 Great job Ray, thats gotta feel good Link to comment Share on other sites More sharing options...
R.White Posted July 2, 2013 Author Share Posted July 2, 2013 Too True!The pictures don't show the threads very well but they are quite a bit deeper than they appear. Also, I think the very slight difference in pitch (5degrees) between the two parts actually works to make the mating surfaces a better fit.The sleeve is now back on the car and hopefully there will be no more oil leaks in future.I visited the auto electrician who is working on my starter motor; progress is being made there too so not a bad day. Not bad at all.Ray. Link to comment Share on other sites More sharing options...
MikeC5 Posted July 3, 2013 Share Posted July 3, 2013 Good work! Link to comment Share on other sites More sharing options...
MikeC5 Posted July 3, 2013 Share Posted July 3, 2013 Nice vintage lathe too. Link to comment Share on other sites More sharing options...
R.White Posted July 3, 2013 Author Share Posted July 3, 2013 Thanks Mike. The lathe was originally treadle operated but was converted to electric and completely modernised by the previous owner who was a steam and model engineering enthusiast. It's a 1921 model M Drummond made in Guildford, Surrey. It is 100% accurate but could really do with a repaint now.Ray. Link to comment Share on other sites More sharing options...
Ron Lawson Posted July 3, 2013 Share Posted July 3, 2013 Ray I have a 1924 Britannia Lathe made in Colechester I inherited it from my Father in law Link to comment Share on other sites More sharing options...
MikeC5 Posted July 3, 2013 Share Posted July 3, 2013 Very nice and period correct I might add! I have a little 9" Southbend of not quite as ancient origins (1933)...I really want to get an old Bridgeport too. Link to comment Share on other sites More sharing options...
R.White Posted July 3, 2013 Author Share Posted July 3, 2013 Some photo's of your various lathes would be nice, guys. My lathe is only a 3 1/2" centre height which is O.K. for small stuff but is rather limiting. I bought it for working on my little Austin Seven. Ray. Link to comment Share on other sites More sharing options...
Machinist_Bill Posted July 3, 2013 Share Posted July 3, 2013 Sorry I haven't replied to you Ray as I have been away on business. I am home to celebrate the 4th! "No taxation without representation!" I see you have been "Creative" in machining the threads. I would highly recommend that you use a small boring bar with a thread tip than use a tap! The reason is because a tap is very brittle and could shatter. A boring bar is much more forgiving. That photo scares me to death! Love the old Lathe! Unfortunately today's tooling is designed for thousands of RPM's instead of hundreds. Be safe! Link to comment Share on other sites More sharing options...
R.White Posted July 3, 2013 Author Share Posted July 3, 2013 Sorry to scare you with my 'Devil may care' approach, Bill - but I promise not to do it again! Link to comment Share on other sites More sharing options...
MikeC5 Posted July 4, 2013 Share Posted July 4, 2013 I'm sure he had his safety glasses on... Here is my 3 & 1/2 foot bed 9" South Bend. It's pretty basic and I'm still looking for a set of thread pitch gears (for a reasonable price)... Link to comment Share on other sites More sharing options...
R.White Posted July 4, 2013 Author Share Posted July 4, 2013 That's a good one, Mike. Can you run it on standard electrics ? (Don't you guys have 110 v? - we have 240v) or is it three phase? Link to comment Share on other sites More sharing options...
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