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Boxford lathe metric compound gear

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Speedy Builder5	30/01/2011 16:44:30
2878 forum posts 248 photos	I have a Boxford AUD lathe, and am looking for the 100/127 compound gear for cutting metric threads but they seem quite rare and expensive. I understand the Southbend 9 1/2 inch lathe uses the same gears. Are there any other makes which used the same gears which I should be looking out for ?
Chris B	30/01/2011 18:37:10
34 forum posts 5 photos	You could try www.latheparts.co.uk or www.rdgtools.co.uk or www.lathes.co.uk Hope this is of use CB
John Stevenson	30/01/2011 20:30:01
5068 forum posts 3 photos	Try Ebay.com as you say they are the same as a South Bend, in fact a Boxford is only a 20th century version of the 19th Century South Bend :D They are plentiful over there and cheap so even with shipping it can work out better. John S.
Terryd	31/01/2011 04:09:25
1946 forum posts 179 photos	Hi John S, Actually, The Boxford 9" lathe was first produced in 1948 as an improved version of the South Bend 9" Workshop lathe first built in 1932 (not the 19th C). Boxford improved the headstock design with more substantial enclosed cast casing and taper roller bearing spindle etc, but the rest of the lathe was all 'South Bend'. Of course the South Bend accessories mostly fit including the gears as needed above. Terry (proud Boxford owner and user)
John Olsen	31/01/2011 05:05:22
1294 forum posts 108 photos 1 articles	They don't actually have to be the same as the other gears, so long as the pair you plan to mesh are the same. They do all have to fit the same arbor. I think the 127 tooth for my Myford would be more likely to be used if it was half the size, (eg 40dp instead of twenty) as it is you probably eat your dinner off something not too much bigger. As it is, it hangs on the wall looking good but has never been tried out. regards John
John Stevenson	31/01/2011 09:53:26
5068 forum posts 3 photos	Myfords are 20 DP, Boxford / South Bend are 18 DP. John S.
DMB	31/01/2011 10:17:08
1585 forum posts 1 photos	Hi all, Re John Olsen`s comment about Myfords 127 gear/40DP. Somewhere, I have seen a description of a solution to the size prob. It was to cut a 40 tooth and 127 tooth, both gears to be 40DP and mesh together. The 127 as a driven on the leadscrew and the 40 tooth wheel on a `driver` arbor with an ordinary 20DP gear on same arbor meshing with the rest of the 20DP train. New prob.! - gear cutting the two 40DP wheels. My simple solution to the dividing part of this is to borrow a 20DP Mford 127 gear from someone to use for dividing while you cut same no of teeth to 40DP. I have not done this as I cannot be bothered - its possible to fudge approximations to most metric/BA threads sufficiently accurately for short lengths neede for amateur purposes. John
jomac	01/02/2011 02:41:47
113 forum posts	Robert.Hi. Iv'e got an Australian HERCUS 260, which is the 5' model. Its much more modern than the earlier 4.5', which is very similar to the South Bend, but they still use the same gears for the gear train, The problem I had, was, that I needed a full set of gears. So that I could cut imperial on a metric lathe. So as mentioned in previous threads, I used a 63/64 combination, The two used machinery places I went to, had lots of gear for Hercus Boxford, and Colchester, I did not have a gear tooth gauge with me at the time, BUT the Boxford gears looked different. ie, different DP/PA, The Hercus/Southbend used 18DP and 14.5 PA, although some of the later Southbends used a 20PA, if I remember rightly from two years ago, All very confusing.!!!Getting the right gears is fraught with problems, Tony at Lathes is a great help. Also last year on E/bay there was a chap in the UK who was selling off gears and lathes cheaply. Best of luck, and if you know someone with a similar lathe to yours, so that you can measure DP/PA, it could save you some trouble with broken gear teeth. Buying of e/bay is like buying a pig in a poke if the seller does not know the right PA's. John Holloway

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