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Post by dewintondave on Jul 19, 2008 8:30:50 GMT
Dear team,
I have a 1977 Unimat 3 lathe, the motor is worn out. I had been powering it from a cheapy 5 speed 1/3hp bench drill. With the original motor pulley mounted on an arbor and held in the drill chuck. The lathe was powered by a long crossed belt. This is not a compact set-up ;D
I am looking for suggestions for re-powering the lathe. I could buy a replacement motor from Chronos. Or, I could even buy a new Sieg C0 lathe and use all my Unimat accessories on that.
Innovative suggestions would be most welcome.
Seeing as though the lathe will be used in making small fittings, a variable speed motor set-up with a fixed speed pulley arrangement would be good. But what to use as a motor and controller?
Many thanks,
Dave.
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Post by circlip on Jul 19, 2008 15:15:59 GMT
The motor might not be worn out Dave, That one on the Unimat has been know to die if you just looked at it the wrong way. You could have a look on 'Tinternet for a Yahoo users group for the "UNI" Have seen a reference to using the motor and speed controller from a running machine/rolling road like what you use in the Gym to bu44er yourself up cos you like Tatoes or an extra pint. BEWARE if you are offered a new original equipment motor, although two would make neat bookends.
Regards Ian.
Not knocking EMCO, mines a"Maxi"
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steam4ian
Elder Statesman
One good turn deserves another
Posts: 2,069
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Post by steam4ian on Jul 20, 2008 10:43:53 GMT
G'day Dave
I quote from the intro to the Yahoo C0 site "An attractive price, but not a wise choice in tabletop lathes. Correction of manufacturing inconsistencies will require attention by an experienced machinist with proper tools. The known issues are carriage rock and tool gouging, bed irregularities, stiff and uneven movements, and a misaligned tailstock."
The site opened with a burst but has now tapered off. The quote pretty well sums the C0 up.
You might even be able to pick up a "used" CO and grab the drive motor off it complete with the variable speed.
If you are looking for drive systems Google "Baldor" they are sure to have representation in NZ, they have effective representation in Oz, even in some regoinal centres.
Regards,
Ian
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Post by gilesengineer on Jul 21, 2008 7:57:15 GMT
Years ago I bought a couple of Sheep Shearing motors from Peatol (they were on his stand at a show) These were in fact 180v DC jobs, with a little box on the side to run it off 240 AC. I then fitted a little 'pot' to give a variable speed from about 40% to 100%. It was very successful indeed, and the original motor has been on the shelf ever since....
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Post by ilvaporista on Jul 21, 2008 9:45:48 GMT
You could always convert it to foot-power. My father's old SL motor gave up the ghost so started a close relationship with a Singer sewing machine...
To anyone who went to Guildford last weekend he was the chap sat in the corner treadling away on the Unimat...
Details should be in MEW shortly
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Post by dewintondave on Jul 25, 2008 7:49:37 GMT
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Post by spamcanman on Jul 25, 2008 12:29:03 GMT
They run on 110 volt in the USA so you would have to step it up  |
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Post by weldsol on Jul 25, 2008 15:48:11 GMT
You could try the Parvalux site. I used a variable 42v one when I had a unimat
Paul
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Post by houstonceng on Jul 25, 2008 18:19:33 GMT
They run on 110 volt in the USA so you would have to step it up Read the spec. 100v to 240v AC, 50 to 60Hz (ie anywhere in the world). |
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Post by dewintondave on Jul 26, 2008 6:56:09 GMT
Read the spec. 100v to 240v AC, 50 to 60Hz (ie anywhere in the world). Well said Andy. ;D |
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Post by circlip on Jul 26, 2008 8:58:56 GMT
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