Re: (ET) ElecTrak Welder on e-Bay - and related ElecTrak powered Welders - Ready Weld, GoWeld, etc

["John B Reinhard" <reinharj frontiernet net>]

I check those three Ebay listings and all were cancelled/withdrawn - but a
few similar ones showed up with new search.
A problem with these is lack of power control.
Tapping the pack at 6 volt steps is not as precise as I would like, AND we
keep running into the unbalanced pack problem.
Another company - Broco - makes a similar product called GoWeld.  It seems
to be a step up in that it has microprocessor based PWM motor speed 
control.
They also list/picture a Voltage Control Unit - but price is not listed, 
and
they did not respond to my email a month ago asking about the unit.

I already own 2 old Airco Spool Guns - rated 100% duty cycle at 250 amps !
Plus, I have tank, regulator, extension cable, etc

The only part of the system I need is the power control (hence my interest
in what's inside the 2 range ElecTrak Welder unit - maybe just a large load
resistor and or inductor ?).

I expect a modern solid state unit to be very similar to an AllTrax motor
control - but maybe with a LARGE inductor.

If anyone on this list knows how to do this (PWM voltage/current control
unit adapted for MIG welding), please let me know.

Thanks,
John

----- Original Message ----- 
From: "Chapin, Tim" <tchapin bf umich edu>
To: <elec-trak cosmos phy tufts edu>
Sent: Tuesday, January 11, 2005 11:03 AM
Subject: RE: [SPAM] Re: (ET) ElecTrak Welder on e-Bay


Check out ready welder
http://www.premierpowerwelder.com/readyweld/readyweld.html

You can even find them on ebay right now.  You should be able to pick
one up for around $200 or less it looks like.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=67054&item=386569
0178&rd=1&ssPageName=WDVW
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=45032&item=386590
5847&rd=1&ssPageName=WDVW
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=45032&item=386572
2410&rd=1&ssPageName=WDVW


-----Original Message-----
From: elec-trak-bounces cosmos phy tufts edu
[mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of John B
Reinhard
Sent: Tuesday, January 11, 2005 10:34 AM
To: elec-trak cosmos phy tufts edu
Subject: [SPAM] Re: (ET) ElecTrak Welder on e-Bay

I am also extremely interested in what is inside this box - as I am
putting
together a spool gun MIG welding system powered by the Elec-Trak - and I
wanted some variable power control besides wire feed speed.

I like the fireproof workbench the guy (in the Ebay auction picture)  is
welding on :>)