Aaccessory power not working consistently on Bobcat 225

[Sean Brown]

I would say the hotter the better and the longer the cool down time the better, but be careful with too hot a pre/post heat or you might cause the casting to sag. I've read where 1,400 is the max recommended and I'd probably only use 1,200 to save gas. I doubt something like a grill will get that hot....

[Sean Brown]

Try pulling the copper off the rod before you start with sandpaper and cleaning it with the same chemicals you're using on the base metal. You might try going down to a 1/16" tungsten and using a gas lens also. I've noticed that these tricks can help.

I've used actual 4130 rod from...

[Sean Brown]

Try using Lanthanated or Ceriated tungsten's instead. Also, going up in size as ROCK says is probably going to help, but I've always found that 2% fingers-out like that when using AC.

Pure will work also, but the heat carrying capability is lower than the other two options I mentioned....

[Sean Brown]

My experiance TIG welding Cast Iron is that it doesn't work. If you pre-heat and post-heat the castings well, you may be able to stick them together but the weld will be porous and full of voids (all of mine were). I know a guy who tried to weld a cylinder head using TIG and it turned out like crap...

[Sean Brown]

Andy,

I mainly do TIG welding.

Sean

[Sean Brown]

I had (still have I guess) a Huntsman Autoview XL since about '98. It worked like a champ until about three months or so ago. The only time I would get flashed is when the batteries get low, or if I was trying to weld with an obstruction between me an the arc.

In any event, it quit working...

[Sean Brown]

Andy,

I think you are on the right track. I Did call Matt about a month ago now and following that, tore into the thing to find the problem. Incidentally, Matt is a very nice guy who deserves all the good words you could lavish on him for the help he gave me in understanding how the system...

[Sean Brown]

Hey guys,

I'm sorry I didn't follow up on any of this yet, I've been so busy I didn't even read the forum until this weekend. I will try to call Matt this next week and get the problem figured out. Thanks for the help!

Sean

[Sean Brown]

Andy,

I've got an older (about 5-years) Bobcat 225 gas (onan engine) welder. Just recently I've had some problems with the accessory power not working when you start it. In other words, if there is something that presents a load to the machine when you start the engine, it won't work...

[Sean Brown]

Thanks Andy, I appriciate your help!

Sean

[Sean Brown]

Andy,

I own a 225-G Bobcat welder/generator and I wonder what is the largest sized electric motor I can start with it? I'd like to get an air-compressor to run off of it, but I'm not sure how big I can go and still have it kick-over on startup. Do you have any recommendations?
...

[Sean Brown]

Andy,

Do any of the manufactures you deal with (sprint car, road race, drag or what have you) actually carry out this procedure?

Thanks,

Sean

[Sean Brown]

Thanks Andy,

Is there any reason to choose one over the other? Like cost, current carrying capacity or resistance (hot-cold arc)? I've found I can often use a lower amperage range with Lantanated sharpened to a point, would that change with ceriated?

Is Miller working to...

[Sean Brown]

Honestly,

I'd do whatever produces the strongest weld! There is a guy here locally who uses the "tack weld technique" as Andy called it. It not only raises the question of weld integrity, but it looks like crap to boot. And God only knows how much time the guy would save if...

[Sean Brown]

Andy,

I have recently been making the switch over to lantenated tungstens (for 1010 and 4130), and have thus far been pleased with the results. I have also tried these with AC on aluminum and I was surprised to find how well they worked with much better current carrying capacity etc,...