I have a small Lincoln 125 flux core welder that I am going to convert to gas, it can use up to .035 flux core wire

So when I started the conversion I bought .035 tips and .035 wire, now some are saying not to go over .030 when you do a conversion but they don't say why


Just wondering if anyone knew if it’s ok to use the .035 welding wire (non flux core) and .035 tips


Thanks in advance

Davegt27

 

The bigger problem is how you are going to get gas to go through a lead and gun that don't have gas hookups and passages.

 

no it has almost everything sort of like this upgrade



Davegt27

 

On a welder that small you probably won't have enough power to burn in .035 solid core. And if it can, you will hit the duty cycle pretty quick. 035 flux core is a lot different than .035 solid. I converted my little weld pak 100 to gas and its an awesome welding little machine for sheet metal and light gauge but I run .023 solid core.

 

Ha ha they got me ha ha my welder can’t be converted to gas

I was told at Lowes that it could the book even talks about it

It has a gas hose in the machine

Yep Lincoln welder I will have remember this company

I will have to rig something up with a relay probably, use the drive motor input and then to a relay to turn on the 120v I need to actuate the gas solenoid



davegt27

 

What kind is it?

 

Lincoln welder 125

 

Look at this link and see if your welder can be converted. If it can, this kit isn't cheap but will come with everything. You could probably peice it together cheaper but this makes it easy as it's everything you need minus a bottle to run gas.

http://www.weldingandcutting.com/Pro...ctCode=K2526-1

 

No you misunderstand I have all that stuff but the control board connections inside the welder are not there

In the video the guy said go to where you see sol (for solenoid) and plug the gas valve in

I have to figure that part out

David

 

Oh I see. That sucks lol but you should be able to rig up the solenoid power to the trigger connections some how. The trigger is probably ground I would guess so you could have a relay that was looking for ground send power to the solenoid when you pull the trigger. Just find the circuit that's hot only after the machine is hot and solder a power wire coming off the board to the relay. Should be pretty simple. Just need to see what voltage the solenoid is.

 

Almost any 110v machine should run .030 wire solid at the largest and .035 flux at the largest. 30 solid wire is just too heavy for a small 110v unit and it will probably weld like **** along with it.
Not to mention .030 wire can handle up to 180 amps (IIRC) so no need for a larger wire anyway. Hell 125amps, all you need is some .023 wire which is good for that amperage.

 

Thanks for the info

I spent a few hours trying to do the mod yesterday and the automotive relay won’t energize

They are using a floating ground on this welding machine

I read 15V on the trigger wires with the trigger acting as a switch

I am guessing I need a low current relay so I will head to radio shack and see if I can pick one up


Davegt27

 

Ok I think I got it, took some praying

But It came to me there is already a relay on the circuit board has to be there for a reason

Long story short I pulled the connection off the relay put a splitter (single female to dual males) this goes to one side of the AC solenoid the other side of the solenoid goes to input (another splitter) into the welder.

Turned it on pulled the trigger and all works
Put my finger on the solenoid and it works when I pull the trigger

I just need to button it up and do the final ops check

Davegt27