wire speed to fast on min

[fbc]

Hi, can anyone suggest what i can do to slow down the wire speed on my mighty mig 100.

i cant stop it blowing holes in thin metal as it is.

Thanks.

 

[Sparkey]

Hi!
maybe you could tell us some more about your welder? min-max amps, etc?
Some pics would be great!
Welding thin stuff is tricky, the stop-start technique could help if it's too thin...


edit: duh, sealey mighty mig 100, i've found it out when i checked your profile.... what's the min amps on that kit?

 

[fbc]

hi sparky.

yes its a mighty mig 100, non fan. old skool kit i know but didn't cost much

min amps is 30 i think, maybe 35.

Its obviously wire feed has been a problem for the past owners so i'm wondering if someone has had a play with it. When wire speed is on minimum it still feeds far to fast. I dont know if there is a way of altering this?

wire is 0.6
gas is argon/c02 mix

trying to weld car body thickness.

Thanks

 

[BChild]

Its obviously wire feed has been a problem for the past owners so i'm wondering if someone has had a play with it. When wire speed is on minimum it still feeds far to fast. I dont know if there is a way of altering this?

Have you had a look at the PCB - I don't know Sealey welders but my SIP had a trim pot on the PCB that you culd use to set the wire speed to a creep on the lowest settings

 

[ballores]

i would suggest a 12v bulb wired in series with the motor works as a resister i use 1 when i charge my 6v bike battery as i'm to tight to buy a dedicated charger.let us know how you get on cheers Nick

 

[BChild]

PS It's been covered on a lot of posts so maybe have a search and see what you find

This one shows it well

http://www.mig-welding.co.uk/forum/showthread.php?p=76713&highlight=Trim+Pot#post76713

 

[fbc]

hmm thats interseting. I'll have to go and have a look now to see.

I'll let you know what i find

Thanks for the help.

 

[fbc]

no there is no adjuster on the pcb, not much of anything really on it, can see its a budget welder.

i'll have to try the bulb trick. not sure what sort of bulb to use, guess this is just gonna be trial an error.

I'll get back with results tomorrow.

Thanks again

 

[fbc]

ok i've tryed a 12v bulb and it did slow it down a fair bit, i think with 2 bulbs it would be ok. The motor isn't as strong though, i can stop the wire feeding by hand easier, not sure if this is a problem yet though.

 

[Jake SS]

Yes it will be a problem, you will have less speed and less torque.