Paul Lousick | 12/02/2015 11:48:05 |
2276 forum posts 801 photos | Hi JP, The gear is not a single idler gear. It is a reduction gear and was available in different ratios. Search under Southbend and also Hercus lathes. If you cannot find one in the UK, they are available in Australia. I just did a search and found a 72/18 tooth compound gear for $69. (approx ₤40) at Australian Metalworking Hobbyist. Other ratios are also available. (Probably cost that much in postage.) http://australianmetalworkinghobbyist.com/store/index.php?route=common/home The spacer washer on my lathe is about 1/8" thick. You could easily make your own if it is required. Paul. Edited By Paul Lousick on 12/02/2015 11:54:36 |
JP Santos | 12/02/2015 12:01:15 |
49 forum posts 9 photos | that's it!! Compund gear!!! I've found a couple on ebay UK!! the original one is 72/18 and the ones I found are not the same but doesnt matter. I just want it to connect to the lead screw so I can have the power longitudinal feed.....
http://www.ebay.co.uk/itm/54-18-Tooth-Compound-Change-Gear-For-Boxford-Lathe-With-Bush-Bolt-Assembly-/121562745282?pt=UK_Home_Garden_PowerTools_SM&hash=item1c4db449c2 |
Tony Ray | 12/02/2015 13:12:01 |
238 forum posts 47 photos | Hi, You are getting good advice here but do you know about the Southbend user group on Practical Machinist ? What they don't know about SB's is probably not worth knowing. Theres probably a tried an tested way of doing this on your machine and those guys will be able to tell you what it is. Tony
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Keith Long | 12/02/2015 14:16:05 |
883 forum posts 11 photos | Hi JP Before you go out to buy anything I suggest you have a look on the www.lathes.co.uk website for info on South Bend and Boxford lathes. Tony usually gives a list of the change wheels for each model and you can compare that list with what you've got and see just what you are short of. The compound gears aren't just paired up at random but form part of a series of gears designed to give you the ability to cut threads of specific pitches as well as giving the fine feed - you might as well get the correct gear to go with your others. As other have said it's also worth joining the various South Bend or Boxford user groups on places like Yahoo. They usually have opertaing manuals and parts list for the various models that you can download as well as giving you better access to folk who use the machines and have been there and got the T shirt. Don't be put off by comments about Yahoo's current "unfriendly" format - it isn't that different to what it was, you can still access what you could before - most of the issues that folk have had is due to a "blinkered" approach!. |
JP Santos | 12/02/2015 16:01:23 |
49 forum posts 9 photos | thanks for that info, been reading a bit more and looks like the guy I emailed yesterday was right mentioning that I needed a 80t idle gear and he has one for £18.... looking at the screw cutting chart, and bear in mind im only interested in the longitudinal power feed, I do need that 80t gear. I can set it up as shown on FIG1... or even FIG2.
And here's some very useful bit of information (added in case someone ends here with the same questions as myself) Edited By JP Santos on 12/02/2015 16:16:56 |
Chandler Welford | 20/10/2015 13:05:13 |
2 forum posts | Try this guy in the US http://plazamachinery.com http://plazamachinery.com/files/Metal-10-11-2015.pdf
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