@Mankul , sure that’s the dam thing, so many variables, we even had a power analyser
hanging off the wall to try and figure out why the Cemonts were so difficult to tune in,
we were also using different gas suppliers keen to get a contract with us, the welders
we’re also training so lots to...
I don’t think @ 250 amp will suffice, initially I hoped one would, but the way that Origo welded
or tried to has me thinking, I firmly believe the transformer was the problem, on paper @ 250 amp
should burn 1mm well enough to use on 6mm all day given the duty cycle isn’t an issue, yet not a
hope...
Interesting you mention the Cemonts, I found the exact same with Two new ones on a job,
we took one back to demonstrate to the distributor to show how it worked, but the company wouldn’t spend
the money to upgrade, a year later the sweet spot was rarely altered, just had to put up
with it.
But...
and
you could jump start them through their very own welding cables from a battery, we had lister start o matic
that were different in that they used their own windings also as a starter, but had a big solenoid in line and some other
circuitry to achieve this by switching on a light or any tool...
The most common problem with the cheap transformers is the laminations coming apart,
They make a distinct vibrating sound that has more to do with the AC dropping to Zero
and rising again 50 times a second causing a pushing and pulling action, the same happens
to coils that break loose because...
True, around here almost every AC air cooled welder was sub par
and all ended up in the junk in a very short time, Lincoln and Miller
we’re the opposite though, they did last and welded well.
Oddly enough, all the ones I seen leaking had those wheels too, along with their
shocking and killing the neighbourhood attitudes.
Ours is the basic 180 amp, no battery charger facility either like some had.
Ok a final update, I got my mig, and while trying it today I have decided to
send it packing.
@Mankul , it was the Origo C251.
I tried to like it, but the time to return it was running out,
I gave up trying to weld 5mm as it had no guts to do so, the welds started off
thin or thin and humped...
Some of them got a hard time, ours is still going after 50 years,
had one oil change, that’s all it needed.
it doesn’t shock when you change the rod either, always a good sign.
This welder was left switched on for days at a time, and it still lays
consistent beads time after time, it makes the...
The first Mig I bought was so heavy compared to other makes I looked at,
the consensus was, it must be full of copper, and none of that aluminium rubbish,
It was widely considered to be the best mig around, all based on its weight,
funny how people think, never had a problem selling a mig by...
I would agree, for certain rods a modern inverter that can handle 6010 and 7018 well
will make the difference in going mad and getting the job done, you won’t be happy with
AC in those cases.