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Swinefahrt 07-04-2004 06:42 PM

I've got to weld a cracked bolt attachment fitting where the baggage support side rail mounts on my 1150R. My question is: Will I have to disconnect the bike's computer to prevent damage when using a heliarc? At least I guess you call the welding gizmo a heliarc. My nephew is a welder and will be doing the work, but he wanted to make sure of the bike's electrics.

Obviously I know absolutely nothing about welding. I need help guys!

Win38-55 07-04-2004 07:06 PM

Disconnect to be safe. Can't hurt anything.

Frank Warner 07-04-2004 07:06 PM

Yes and no.

You should also consider the ABS brain if you have that.

Disconnection will ensure their safety.

Not disconnecting them .. well keep the earth clamp close to the wield area. I've had various things wielded on the bike without disconnection. But it is safer dissconected, and I carry spares.

KingdomRider 07-04-2004 07:16 PM

Always disconnect the battery. I've welded on a lot of vehicles, though they are the last thing I want to weld on, bikes exempt of course, and have never had a problem with computers. But not being familiar with what makes them tick, I would check with an electrical guru first. It may be really easy to disconnect to be on the safe side. That being said, find the end of the crack, centerpunch it and drill it so that it doesn't continue later. Also make sure the welder connects the ground lead as close to the area as reasonable & never ground to a shift lever or any point whiich will carry a bearing. When current makes contact on the bearing surface, you'll have a hard spot and it will commence to pound the snot out of it. Let me know how you make out.


Swinefahrt 07-05-2004 04:04 AM

Thanks guys. Connectors for computers and battery coming off! I'll check with the local BMW dealership although they don't always inspire me.

dancerdave 07-05-2004 06:36 AM

also connect the ground wire from your welder the closes place where you are welding... current runs the shortest route.... might save a bearing...

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