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Post by simplyloco on Oct 22, 2023 17:39:34 GMT
The backlash on my lovely EMCO has worsened of late, so much so that there is now nearly half a turn on the dial before anything happens, so I resolved to fix it. Copying the nut was straightforward enough, and I found a drawing on the Net just to confirm the finished sizes. A fat piece of brass was found and I was away! I now have just 0.05mm backlash and it is as smooth as silk...  There was the rare option of buying one, but at £72.00... www.ebay.co.uk/itm/235247842218What it should look like.  What I finished up with after two hours work. I bought the length of stainless rod intending to replace the existing shaft, but it wasn't necessary as all the wear was in the nut. I hacksawed the slot using two blades in the saw frame. Worked a treat.  I cheated and bought some LH taps from RDG Tool. Velly cheep!  |
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Post by steamer5 on Oct 22, 2023 20:48:48 GMT
Hi John,
Well done!
I was fortunate that a friend of mine had the same issue, I asked him very nicely since you are making one, can you make one for me too? The spare is carefully put with other lathe items ready for the day!
Cheers Kerrin
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Post by simplyloco on Oct 22, 2023 21:47:03 GMT
Hi John, Well done! I was fortunate that a friend of mine had the same issue, I asked him very nicely since you are making one, can you make one for me too? The spare is carefully put with other lathe items ready for the day! Cheers Kerrin I'm very happy with it, but it would also be nice to locate a replacement for the clanky fibre headstock gear! John |
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Post by steamer5 on Oct 23, 2023 0:39:51 GMT
Hi John,
I replaced mine after an eerrr uummm moment! Lathes UK at the time had replacements, you had to send the center to them, which living down under meant a reasonable time without the lathe. By chance when I brought the lathe there was a spare…. read fiber gear needed replacing…. in the bits that came with the it. I went & talked to a local company who made me a replacement out of a modern equivalent, it wasn’t cheep but neither was lathes UK.
I have been watching some gear making videos on YouTube using a shaper over the last couple of weeks, doesn’t look to hard…… if you know what you are doing!
Cheers Kerrin
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Post by simplyloco on Oct 23, 2023 9:06:06 GMT
Hi John, I replaced mine after an eerrr uummm moment! Lathes UK at the time had replacements, you had to send the center to them, which living down under meant a reasonable time without the lathe. By chance when I brought the lathe there was a spare…. read fiber gear needed replacing…. in the bits that came with the it. I went & talked to a local company who made me a replacement out of a modern equivalent, it wasn’t cheep but neither was lathes UK. I have been watching some gear making videos on YouTube using a shaper over the last couple of weeks, doesn’t look to hard…… if you know what you are doing! Cheers Kerrin I made lots of replacement gears when I was in the Army, but I had access to the right equipment - and a full set of cutters! The EMCO teeth are all intact, so I can live with the clanking. as I just have to remember to push the chuck backwards a little before I press 'start'! John |
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SteveW
Elder Statesman
Posts: 1,397
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Post by SteveW on Oct 23, 2023 17:17:29 GMT
Maybe clean the whole assembly and give it a good dose of lubricant to extend the service life, hopefully, out beyond your needs.
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Post by simplyloco on Oct 23, 2023 17:36:47 GMT
Maybe clean the whole assembly and give it a good dose of lubricant to extend the service life, hopefully, out beyond your needs. As one would, after going to all that trouble... |
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SteveW
Elder Statesman
Posts: 1,397
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Post by SteveW on Oct 23, 2023 17:44:04 GMT
Maybe clean the whole assembly and give it a good dose of lubricant to extend the service life, hopefully, out beyond your needs. As one would, after going to all that trouble... Is that "as one would" or "as one did"? |
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Post by simplyloco on Oct 23, 2023 18:43:09 GMT
As one would, after going to all that trouble... Is that "as one would" or "as one did"? One doesn't mind how one is taught to suck eggs, would or did is just fine!😇 |
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Post by jon38r80 on Oct 31, 2023 9:21:32 GMT
I have bought spares from Emco themselves and sets of gears (mine had none other than the basic set) they still supply quite a lot of bits an d I found them to be cheaper than hunting on EBay. . I’ll look out the link I used.
Edit. - had a quick look without success , will look again later when I’ve more time
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Post by jon38r80 on Oct 31, 2023 22:49:07 GMT
The Emco site where I bought spares for my Compact 8 was here - www.emcoshop.at/Dont know which model you have but maybe they cover it. Helps if you have part numbers as its in German. Have you thought of printing a new gear on your 3D printer? I have seen models for printing the change gears, why not the gear you mention. I suspect you want a metal one though |
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Post by simplyloco on Nov 1, 2023 9:20:50 GMT
The Emco site where I bought spares for my Compact 8 was here - www.emcoshop.at/Dont know which model you have but maybe they cover it. Helps if you have part numbers as its in German. Have you thought of printing a new gear on your 3D printer? I have seen models for printing the change gears, why not the gear you mention. I suspect you want a metal one though Hi Jon, and thanks for this. I have a V10P, and it's the main drive gear: metal hub and fibre gear ring. I haven't checked the part number, but if it's the one listed here then at €547.00 I'll put up with the noise! Incidentally, when I remove the chuck and replace it with an ER16 collet chuck, the noise on start up disappears and the spindle stops instantly when the power is cut. Inertia rules. OK?  John www.emcoshop.at/356-maximat-v10-p-maximat-mentor-10 |
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Post by jon38r80 on Nov 1, 2023 10:42:40 GMT
I see, not just a simple gear! I think I too would live with the noise at that price.
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abby
Statesman
Posts: 927
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Post by abby on Nov 9, 2023 15:06:00 GMT
I loved my emcomat7 , sold my ML7 to buy it .It was a very accurate piece of kit with loads of inovation , but the nylon tumbler gears could be easily stripped of teeth and became more difficult and expensive to get over time.
Similar thing ,nylon with steel centres.
The diecast zamac(mazac) gear change levers snapped but I cast new ones in brass , a definite improvement.
Eventually the built in switch gear became faulty and when I did find replacement parts they were priced at more than I paid for the lathe.
Such a shame but it had to go.
Just wondering why the slot in the nut ?Can it be adjusted ? My pultra lathe has similar style nuts , although obviously much smaller , the nut has a screw , accesible from the front of the slide , which goes through the slotted part into the main body of the nut.A very slight tightening of the screw closes the slot to remove any backlash.
Dan.
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Post by simplyloco on Nov 9, 2023 16:40:07 GMT
SNIP Just wondering why the slot in the nut ?Can it be adjusted ? My pultra lathe has similar style nuts , although obviously much smaller , the nut has a screw , accesible from the front of the slide , which goes through the slotted part into the main body of the nut.A very slight tightening of the screw closes the slot to remove any backlash. Dan. Hi Dan, long time no speak. There is a M6 cone grubscrew embedded vertically in the saddle, at just the right distance from the slot to remove any backlash. Works a treat! John |
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