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Up Topic Welding Industry / General Welding Discussion / Sa-200+ LN 25 CC
- - By JohnJohn (**) Date 02-14-2009 14:50
Has anyone ran an LN 25 CC on their SA- 200 with good results? I just got done welding a lot of galvanized iron and it would have been nice to run 202 wire instead of 7018. The flat fillets are ok but the verticals just seem to take forever because the galvo just seems to UC so much, and you have to run multiple passes to fill them up. Even after grinding off the galvo first. I've ran the LN 25 CV from 300D, Pro 300 and electric power source, but never CC. They want $1800 for the wire feed module plus the $2K for the LN 25 new, seems a lot to invest for the CV if it will run decent on CC. My machine runs like a top and holds a great arc. BTW does the wire feed put anymore stress on the generator? I would appreciate any thoughts.

JohnJohn
Parent - - By patg (**) Date 02-14-2009 15:03
i run a ln 25 off my 63  and never had any problems
just remember its only 60 percent duty cycle
so i would run about a 1 foot and stop
have run fluxcore and mig both work fine for me
just to throw it out there i have a ln-25 4 sale
asking 750.00
Parent - - By Jake331 (**) Date 02-14-2009 19:17
I'm not up to date with wire feeders... so the LN 25 can be run cc? so I could just plug in to my sa 250 and roll? I just got a deal to build 3 big mud pump skids and possibly 7 more. this could save some time for sure.
Parent - By patg (**) Date 02-14-2009 20:12
yea theres a switch on the inside for cc or cv
never had a problem runnin it on my 63 sa200
Parent - - By JohnJohn (**) Date 02-14-2009 21:45
Is the duty cycle the same if it's CV? Wire can be the way to go for a lot of structural applications. I do alot of onsite fab so the fluxcore would work best for me. I think fluxcore runs hotter/faster than MIG IMHO.
Parent - By patg (**) Date 02-14-2009 22:45
i agree with you on fluxcore bieng the way to go for speed
but no matter what you run its still only 60 percent duty cycle
now i have ran my machine on 200/85 all day and never had a problem but you gotta give the old girl a break now and then
i hear lincoln makes a good wire for uphill fluxcore
i have never used it just hear it works good
i have only welded fluxcore flat, and overhead
Parent - - By 52lincoln (***) Date 02-14-2009 23:38
i dont believe u can weld with it on cv with an old 200
Parent - By JohnJohn (**) Date 02-15-2009 00:31
You have to install the CV module, about 1800 bones.
Parent - - By tazmannusa (**) Date 02-14-2009 23:08
I use to run mine on cc hooked to a miller big 20, No CV available. I found that NR 211 will run pretty good that way in the .068" diameter. I did a lot of heavy duty stuff with it and never had a problem but after the quakes it got declassified to nonstructual.
  Tom
Parent - - By JohnJohn (**) Date 02-15-2009 00:30
Now you have to run NR-232 for seismic zones, a WHOLE different wire to run. No whip, no weave, just drag any position. Takes awhile to get it down and the wire is britle, always breaking in the gun. We used it for Moment Connections and 202 or 211 for everything else.
Parent - By Superflux (****) Date 02-15-2009 02:08
NR 211 in a LN25 on SA200

YES it will work on any DC pwer source! However, the pure DC of SA 200's are the least forgiving. Rectified and inverters are far more user friendlyMake sure you have the correct Polarity, flip the internal switch in the LN25 to CC.   What i used to do was use my regular dual purpose gun, remove the copper gas nozzle and put on the white FCAW insulator and then wrap the gas ports in some insulation cloth and hi-temp mastic (sorry, I'm a poor feller/cheapskate and did not want to buy another gun).

Here in lies the problem...
With out a CV module on the power source, the LN25 "cheats" for you with that internal switch. BUT !!! The stick out must be maintained once you find that "magic length".
Depending on which "gear" you set the selector on SA 200 is going to affect the  electrical stick-out of the wire. Once you change any setting on either the suitcase or power source, it WILL affect the stick-out length AND usually by only a few thousandths of an inch.

Due to the length/size of job, dexterity involved and your ability to maintain that stick-out (tight spots), you might want to buy the module. This system I described works great on flat, easy access. When you get in a bind is when the whole Kit and Kaboodle will go south on you.
A small multi-purpose TrailBlazer or Ranger might be something to consider.

Without the module, all the inherent problems of wire feed welding will be compounded by that stick-out issue.
Parent - - By tazmannusa (**) Date 02-15-2009 14:30
I dout you would have much luck running 232 in a cc mode. I only tryed it once  with cv and didnt care much for it. 203N didnt like cc mode eather.
  Couple months ago I was on the ABS web site looking up what wires were aproved for ship building and was suprized the NR211 was still listed.
I guess building a steel boat would be considerd non strucual  LOL
Tom
Parent - By JohnJohn (**) Date 02-15-2009 15:13
If you show up to a structural job in Cali with no 232 papers, you'll probably be welding handrails. I agree about running it CC, it's a b*****d to run CV in perfect conditions. We used to designate certain LN-25's just to run it so the settings would remain somewhat constant, especially the wire tension. Once you run a couple hundred pounds it gets better. I still think they should improve on it, it could be an awesome wire with some adjustments. I don't know about 211 being classified as non-structural because we welded moments with 232 and galvo and tube steel with 202. I had an engineer prequalify it to weld some heavy tube with it a few years ago, but I ended up using 232 instead. The tube steel was to support window washing equip from the top of a mulitstory bldg. Job was so critical the inspector had to witness all the welding at critical points. Funny thing was, the LN-25 crapped out on me when the inspector showed up and I ended up using 5/32 7018. So much for planning.

JohnJohn
Up Topic Welding Industry / General Welding Discussion / Sa-200+ LN 25 CC

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