Gallery, Projects and General > How do I??
Mini Lathe Electrikery.......
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andyf:
David D,

I was probably wrong to refer you to the Little Machine Shop troubleshooting guide, which deals with the Chinese-made control boards for Sieg minilathes, utilising mosfets rather than SCRs.

If your lathe is the Chester Conquest shown on their website, it is from the "Real Bull" factory (like the mini-lathes supplied by Amadeal) and is described as having a US control board. That will probably be a KBLC version of one of the KB Electronics' standard KBIC modules, and Dave BC has referred you to their online manual . The KBLC boards are specials supplied to manufacturers, but I believe the only difference between them and the standard KBICs is the rating of the power diodes and SCRs.

Should it transpire (after testing without the filter board in circuit) that the speed control board is fubar and has to be replaced, use a KBIC-240 board with the appropriate “plug-in horsepower resistor” for your motor. Chester’s website says 400W, or a bit over 0.5 HP, and it is no doubt 180VDC. KB’s online manual shows the part number for a 0.75 HP resistor to be 9840.

But even if the magic smoke has left the speed control board, it may be repairable – see http://andysmachines.weebly.com/variable-speed-controls.html , which also tells yopu how to find UK suppliers. As I say there, I have the circuit schematics and parts list which KB have now unsportingly removed from the manual, so if you need them, give me a shout.

Andy

Stilldrillin:
Mornin Chaps.
It's only 06.50 or so, and me brain's hurting already......  :palm:

My total understanding of leccy, is on a par with Dean's.  :scratch:

This afternoon, I'll bypass the gubbins, and switch on with fingers crossed......  :zap:

THEN, I/ we'll proceed..... Or not!   ::)

Dave.
The brushes are black carbon. Cross section 10mm x 4.5mm.  :thumbup:

David D

lordedmond:
David

as I am not to far away from you I will ensure that I have my tin foil hat on this afternoon along with welding googles when I look towards your neck of the woods in case a mushroom shaped cloud appears  :zap: :) :) :) :) :)


hope it just the add on board
Stuart
Stilldrillin:
 :lol: :lol:

Nice one Stuart! :thumbup:

Should I warn the neighbours?  :D

David D
krv3000:
HI I can never figer out electricity to me its all a black art
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