| Gallery, Projects and General > How do I?? |
| Mini Lathe Speed Reduction....... |
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| Stilldrillin:
Andy, John. Thank you! :thumbup: I realise there's a little less metal, in a Sieg version....... I wondered if the deck was cut away, under the headstock. Or summat! :Doh: David D |
| Bluechip:
Hi Dave I KNEW you'd fix the speed wotsit .. I had every confidence.. :thumbup: What happened to the squeak BTW ?? Or are you looking for a pip to go with it ?? :scratch: After last nights curry I've got some bubbles if you want some ... :palm: I'm off .... not before time etc etc BC |
| Stilldrillin:
Hi Dave. Thanks for your confidence, in my confidence. :thumbup: Squeak's still there, as it has been since new. No sign of Wilfred, or Pip...... :scratch: Will post the build/ mods, as they happen. Don't hold yer breath. I'm hoping I can grab a whole hour in there this aft...... :bang: David D |
| Stilldrillin:
Dave BC. I was fiddling with the new pulleys, this aft. Realised I could do a vid, or two...... :thumbup: But, I couldn't make it squeak on camera, for you! :bang: But, here's a vid of the quiet end......... [ Invalid YouTube link ] The other end isn't as exciting, but it's a lot noisier...... [ Invalid YouTube link ] I still think the commutator needs a gentle skim....... David D |
| Bluechip:
Dunno Dave, does sound a bit ratchetty ...but .... If I turn the one on my WM16 mill right down it cogs ... and I expect it to really. With these controllers you are only putting a bit of a pulse through the motor 100 times a second. So the motor is going to give a lot of little kicks rather than a continous s-m-o-o-t-h rotation. On my mill it rattles the gears horribly, but if I put some drag on the spindle, it don't, 'cos I have taken the backlash out of it. I wonder what that motor would sound like using my Variac with a bridge rectifier ??? When the controller went dud on the WM16 I ran using the variac/rectifier for months 'cos I was too idle to fix the Controller Board and it ran a whole lot better. And faster ... :zap: the motor was getting a fair bit more than it's usual 180V ration ... It may be that the commutator is a bit gruesome. but I would not have thought so, the motor ain't all that old is it? No harm in having a shufti, make sure the brushes are free too, they can give all sorts of aggro ... BTW what's all that black stuff? Belt crud?? I'll wind your spare board up with the Warco motor and see what that's like ... IIRC it doesn't make too much noise. Hmmmmm hard to tell at this distance ... BC |
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