I've got a Chomemoly roll cage coming but I'm out of money and need some help installing it. Is there anyone close that is willing to lend me a hand with the TIG welding?

 

Aer you stuck on using a TIG?
I just bought a new MIG that would do a great job.

ps. you never did send your address.

 

Al,

If I'm not mistaken with the chromoly cages they have to be TIG welded to be legal.

 

You are correct Chad. Sorry Dan, dont know anyone with one of those.

 

If you can get the car down to Carleton (near Monroe), i have a friend that can and will TIG in your cage for ya...

Give him a call Doug @ 734-654-6263,

He has a ton of experience in chassis and cage work.

later
larry

 

I will be glad to give you a hand.

 

Thanks for the help suggestions! I'll be giving you all a call. I have one fellow here locally that welds on the Cyclotron at MSU, but if he doesn't call back, I might be making that trip.

I'm taking the interior out right now. (Welll, not *right* now). I've only found one little spot of rust so far, and it's amazing how shiny those 19 year old panels look under that carpet!

Hafta be careful though... 19 year old plastic can break easily.

 

Why? Who says so?
I know that chrome moly is an alloy tube. Steel, chromium, and molyebedinum (sp). But why can't it be mig welded with the correct wire?
Inquireing minds need to know.

 

Why? Who says so?
I know that chrome moly is an alloy tube. Steel, chromium, and molyebedinum (sp). But why can't it be mig welded with the correct wire?




Does anybody know the answer to the above questions?

 

It's in the NHRA rule book. If you are putting a bar in why not make it legal.

I believe it has something to do with the depth of the weld. I will do some checking and find out more.

 

Chad it's not that I don't want to do it right, safe, or legal. It's that I don't understand why TIG only. Just looking for clarity. And the reason isn't depth of penetration. That is controlled strictly by voltage/amperage. I can get the same depth with any kind of properly sized welding machine.
I would really appreciate that.

 

I am still trying to find out for sure, but what I have learned from a journeyman toolmaker friend of mine is that with TIG welding chromoly you have to use filler rods (kind of like ARC welding) but with the gun of a MIG welder. He said that you can get a conversion kit for a MIG to make it a TIG, this changes the tip on the gun so the arc comes out of the gun and you use chromoly filler rods for the material. Whereas in MIG welding you are using the wire as the filling material.