I had no problems when I welded a new flag mount on the sub-frame of my Z400. I did disconnect the battery though.....but not the CDI.

 

Your CDI box is comprised of electrical components, when you are welding on something, you are generating an enormous amount of current which can essentially zap your electronics.

 

Thanks, I'm still not sold. I know the CDI is grounded to the frame I'd think but so is the welder. I'm no electronics wizard either, LOL.

Geez Brian is your sig for real? I was laughing my azz off then I got to thinking about it, and it wasn't realy funny anymore.

 

i am an electronics guy..... and "sometimes" welding can cause failures in electronics, it also can cause wires to melt.... Some elctronics are more sensitive, like radios and stuff i work on.... but it also depends on how the electronics are wired... weird things happen, but when weding, there is a massive amount of current ... 30-175 AMPS depending on type of welding, and if the ground of the welder was on one side of the electronics from where you are welding, it has the potential to damage everything in its way...

 

Thanks, well, I guess I better start disconnecting the CDI next time I weld somthing on my quad. Better safe than sorry, or out $3-400.

 

i think it is just be careful where you ground your welder.....

 

I had my atv up on a steel stand so that may have attributed to a poor ground. Its important to ground as close to your weld as possible to prevent the charge from traveling through the frame.