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gnforge
gnforge
Senior Member
Last Activity: 03-20-2016, 05:41 PM
Joined: 04-10-2012
Location: Western Pa.
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  • I bought a used Dynasty SD. There cheaper than DX but same machine less pulse.
    It’s in my shop but if I hv field work it can go with me.
    I’ve got same problem I’m still running a 1988 Big 40 D with CV pkg. still runs strong.
    I can get 150 amps in Tig off the 240 13amp. ...
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  • I know how hard my Big 40 works welding dual shield so I Just looked at Miller web site and the new Bobcats are listed 100% duty cycle on CC at 25 volts BUT for CV mig only listed at 20 Volt
    Not looking very promising.
    For my work I wouldn’t buy anything less than Big 40 or pipe pro...
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  • Depends on cable length, voltage drop at wire feeder duty cycle etc.
    Been running a lot of Excell Arc 71 lately off my older Big 40. It has CV pkg. and runs dual shield off wire feeder super.
    I’m running big wire from welder to feeder. I think it’s #4 but it’s at least as big as...
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  • Miller 30 A spool gun and WC-24 and the Big 50 will weld aluminum great.
    For Tig buy used dynasty sd or dx and run off AC on big 50.
    Works for me in field work.
    Never had any luck with Teflon liners.
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  • gnforge
    replied to Welding manganese
    I’ve used both. But have to say I use Postalloy now. Really like there products and there tech support is beyond awesome. They hv helped me a lot.
    In fact there working with my on a quote at the moment. Just received a email response at 9:30 pm. That’s unheard of in this day.
    It’s...
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  • gnforge
    replied to Welding manganese
    Not real familiar with welding manganese. But do a lot of similar work in under ground rock and saw mill repairs.
    In my work the pre heat sounds a little low. Especially with that thick of material. I like my 4130-4140 to be between 400 & 600 deg. And keep my inter-pass temp not over 500...
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  • gnforge
    replied to Rebate is back
    Didn't realize the diesel were adaptive rpm. That's interesting.
    Have older Big 40 and normally don't run it all the time but it's been running every day all day for the last month and I'm getting little worried.
    Time to upgrade but new ones are many bucks
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  • gnforge
    replied to Rebate is back
    Just curious is your new machine 3600 rpm or 1800 rpm.
    I've always liked the 1800 but there generally twice the money.
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