Lincoln "coffee grinder" DC stick welder

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Lincoln "coffee grinder" DC stick welder Vernon 05-10-2006
Posted by Vernon on May 10, 2006, 9:30 pm
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A couple of years ago I posted an inquiry about an old Lincoln 3 phase
"R2D2" welder I bought on ebay.

Specifically, I'm wondering whether anybody has ever managed to spin
one of the things from some kind of external power supply such as a
tractor PTO.

I have seen pictures of old Lincoln welders that were designed
precisely for that purpose.

I'd like to do something with this machine. Especially now since I
just got our old Farmall Cub running again.

One of the responses to my original post stated that the 3 phase motor
and the rotor share the same bearings. He went on to suggest that I
operate it with a phase converter.

But I'm much more razzed about spinning it mechanically.

Has anybody out there ever done this? Somebody said they call those
"coffee can" welders.

Thanks,
Vernon


Posted by Potblak on May 10, 2006, 9:41 pm
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The original Lincoln pto-driven unit was called a TractaPak (sp?) Last one I
saw was in a logging camp near Miri, Sarawak about 1983.
:))
Good unit with excellent characteristics.
If you know the rpm of the 3-ph motor, I suppose you'll need to drive the
unit at the same speed with your external power, and have some kind of speed
governor.

>A couple of years ago I posted an inquiry about an old Lincoln 3 phase
> "R2D2" welder I bought on ebay.
>
> Specifically, I'm wondering whether anybody has ever managed to spin
> one of the things from some kind of external power supply such as a
> tractor PTO.
>
> I have seen pictures of old Lincoln welders that were designed
> precisely for that purpose.
>
> I'd like to do something with this machine. Especially now since I
> just got our old Farmall Cub running again.
>
> One of the responses to my original post stated that the 3 phase motor
> and the rotor share the same bearings. He went on to suggest that I
> operate it with a phase converter.
>
> But I'm much more razzed about spinning it mechanically.
>
> Has anybody out there ever done this? Somebody said they call those
> "coffee can" welders.
>
> Thanks,
> Vernon
>



Posted by Vernon on May 11, 2006, 2:51 pm
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Hi Potblak,

Thank you for providing the name of the critter. After doing some
additional internet research it appears they're still being made in
Australia.

Thanks!
Vernon

Potblak wrote:
> The original Lincoln pto-driven unit was called a TractaPak (sp?) Last one I
> saw was in a logging camp near Miri, Sarawak about 1983.
> :))
> Good unit with excellent characteristics.
> If you know the rpm of the 3-ph motor, I suppose you'll need to drive the
> unit at the same speed with your external power, and have some kind of speed
> governor.
>
> >A couple of years ago I posted an inquiry about an old Lincoln 3 phase
> > "R2D2" welder I bought on ebay.
> >
> > Specifically, I'm wondering whether anybody has ever managed to spin
> > one of the things from some kind of external power supply such as a
> > tractor PTO.
> >
> > I have seen pictures of old Lincoln welders that were designed
> > precisely for that purpose.
> >
> > I'd like to do something with this machine. Especially now since I
> > just got our old Farmall Cub running again.
> >
> > One of the responses to my original post stated that the 3 phase motor
> > and the rotor share the same bearings. He went on to suggest that I
> > operate it with a phase converter.
> >
> > But I'm much more razzed about spinning it mechanically.
> >
> > Has anybody out there ever done this? Somebody said they call those
> > "coffee can" welders.
> >
> > Thanks,
> > Vernon
> >


Posted by wayne mak on May 13, 2006, 6:44 am
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I bought one years ago for $25.00 with some very long cables. My plan was to
drive it with a 12 HP briggs vertical shaft engine. A few problems, it would
be a bit of work to get a lovejoy ontop of the unit but could be done,
however with mine the rotation was in the wrong direction so the engine idea
was out. To try to drive it from the bottom would be very hard.
> Hi Potblak,
>
> Thank you for providing the name of the critter. After doing some
> additional internet research it appears they're still being made in
> Australia.
>
> Thanks!
> Vernon
>
> Potblak wrote:
>> The original Lincoln pto-driven unit was called a TractaPak (sp?) Last
>> one I
>> saw was in a logging camp near Miri, Sarawak about 1983.
>> :))
>> Good unit with excellent characteristics.
>> If you know the rpm of the 3-ph motor, I suppose you'll need to drive the
>> unit at the same speed with your external power, and have some kind of
>> speed
>> governor.
>>
>> >A couple of years ago I posted an inquiry about an old Lincoln 3 phase
>> > "R2D2" welder I bought on ebay.
>> >
>> > Specifically, I'm wondering whether anybody has ever managed to spin
>> > one of the things from some kind of external power supply such as a
>> > tractor PTO.
>> >
>> > I have seen pictures of old Lincoln welders that were designed
>> > precisely for that purpose.
>> >
>> > I'd like to do something with this machine. Especially now since I
>> > just got our old Farmall Cub running again.
>> >
>> > One of the responses to my original post stated that the 3 phase motor
>> > and the rotor share the same bearings. He went on to suggest that I
>> > operate it with a phase converter.
>> >
>> > But I'm much more razzed about spinning it mechanically.
>> >
>> > Has anybody out there ever done this? Somebody said they call those
>> > "coffee can" welders.
>> >
>> > Thanks,
>> > Vernon
>> >
>



Posted by Vernon on May 13, 2006, 8:35 am
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Wayne,

What is a "lovejoy"? A pulley??

And why do you say? "To try to drive it from the bottom would be very
hard."

Since you've already looked into it and I haven't, I don't doubt you.
But I'm just wondering what the issues are.

Is it because of the wrong direction of rotation?

If I ever attempted it I'd figure on driving it from a tractor PTO or
stationary engine.

Thanks!
Vernon


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