1975 Trailblazer 5G

[Johnny T01LB7]

Hello, I've tried posting numerous times whether to help others or such as today I have a question but my posts never seem to make it past a mod hopefully it works today

I have a 1975 Trailblazer model 5G serial number HF847166. The first question I have is does anyone else know of one of this model Trailblazer to exist, or ever used one before? It is an amazing welder for me, but it seems like I'm the only one on the planet to own one lol.
The next question I have is about the contacts that are within the machine for the MIG welding setting, it has a 2-Prong male twist lock on the panel, and a toggle switch to switch form STICK to MIG. Does anyone know what wire feeder would be needed to use this feature or would I be better to find a regular CC wire feeder from miller comparable to the LN25 Stinkin Lincolns? Thank you for any help possible. John

[Tryagn5]

Hello, I've tried posting numerous times whether to help others or such as today I have a question but my posts never seem to make it past a mod hopefully it works today

I have a 1975 Trailblazer model 5G serial number HF847166. The first question I have is does anyone else know of one of this model Trailblazer to exist, or ever used one before? It is an amazing welder for me, but it seems like I'm the only one on the planet to own one lol.
The next question I have is about the contacts that are within the machine for the MIG welding setting, it has a 2-Prong male twist lock on the panel, and a toggle switch to switch form STICK to MIG. Does anyone know what wire feeder would be needed to use this feature or would I be better to find a regular CC wire feeder from miller comparable to the LN25 Stinkin Lincolns? Thank you for any help possible. John

Nothing compares to a ln25 they are the best. Only portable feeder i would use.
Kevin

[JSFAB]

First off, I agree with Tryagn5's comment. Over the years, I have owned various machines from several major manufacturers, I have found that the company you put down, makes machines that are far more trouble free, and the factory reps I have contacted from that company, have been far more helpful than those from other brands.

All that aside, you have to realize things have changed since the 70s. Back in the day, the only ones commonly buying large, big amp engine drive welders were large construction companies, oil refineries, and shipyards. Since the technology wasn't really advancing that much back then (there's really not that much difference between an engine drive built in the 50s and one built in the 70s, even up to the early 80s), most of these companies buying felt no need to turn over their inventory of welders. They would just run them until there was nothing left, then scrap them.

Today, of course, it's like buying new cars,,,, what you bought a couple years ago is already obsolete.

A few remain, more often big Lincoln DC machines. I myself have a 4G, a 400 amp class machine driven by a gasoline engine. Not familiar with the 5G, but I suspect it is 500 amp class (probably tops out at over 600 amps, with a gas engine). Based on who I bought it from, mine probably came out of the shipyards in San Diego. Eventually I replaced this with several more modern machines, it really didn't make sense for me to keep working with old technology.

I am speaking from the viewpoint of somebody in the portable welding business, if you happen to have welders, and work on your own stuff, the economics may be different.

The two prong plug suggests simply a contactor connection, no remote amp or voltage control.

[Johnny T01LB7]

JSFAB I didn't realize they'd made a 4G trailblazer, my 5G is 400 amp capable with 300 amp 100% duty cycle then it has a switch to change course amp range and to go from stick to Mig and change the amount of slope... And on my contactor someone unhooked the main power feed off the power side but its still threre ready to hookup... I was just wondering if there was a specific wire feeder designed to run off this setup that would be different than the ln25 that I assume you just plug in power and use ground and works? I'm more on the hobby and farm repair side of things just trying to learn more what's there and try getting better as I go thanks for the input

[JSFAB]

Like I said before, if all you have is a two prong connection, it is just a contactor connection. Just be sure you match up voltages, most of the older ones were 120 volts. Set the volts on the power unit, set the wire speed on the feeder.

NOTE: Feeder drive volts is NOT the same as welding volts!!!!!!

My 4G was built a few years before your machine was,,,, it is a CC only unit, set up specifically for big amp TIG work.

You can look up your owners manual on this site,,,, check under "service" above, on the Home page

[Portable Welder]

JS Fab, I have always used constant voltage suitecase feeders off my portable units and over the winter borrowed a friends S-32 Voltage sensing feeder to run dual shield E71 elite with 75/25 gas, I was very impressed with the feeder and want to buy one.
However, Your really causing some problems with your statements, Now you have me thinking I should look into a LN-25.

[gnforge]

1975 Trailblazer 5G

I have 1988 miller big 40 diesel with cv pkg. I run LN-25 pro off it mostly excell arc 71 dual shield. Runs as good as any mig I've used.
So far bullet prof

[Miller_Caleb]

Hi John,

I would recommend a voltage sensing feeder like the Suitcase X-Treme 8VS or 12VS.

http://www.millerwelds.com/products/...se_x-treme_vs/

These feeders have a contactor built in and don't require an interconnect cable to run. You will need to put both the remote control switch and contactor switch in the "standard" positions. You will adjust voltage at the Trailblazer and wire feed speed at the feeder.

If you need additional help you can call the Miller Industrial Engine Drive service group at 920-831-4851.