Welding Question - Page 2 - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Body - Exterior
User Name
lost password?   |   register now

LinkBack Thread Tools
  #16 (permalink)  
Old 11-23-2005, 07:54 PM
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,927
Wiki Edits: 0

Thanks: 0
Thanked 10 Times in 10 Posts
Kringold, Good point!

Reply With Quote Quick reply to this message
Sponsored Links
  #17 (permalink)  
Old 11-24-2005, 10:50 AM
Join Date: Nov 2004
Location: Maryland
Age: 65
Posts: 71
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Yes, the work clamp is not grounded to anything. It is deliberately "floating" so that the flow of current is from the electrode back to the welder without going through any other paths.

I would definately disconnect the battery before welding. Electromagnetic fields are created by welding that could alter the computer programming even if it doesn't zap the circuits. Just as you hear the welding electromagnetic interference on radios nearby, these signals are present on the input leads to the engine computer when you are welding. The memory is more likely to be altered with the 12V power applied. I think it's also good idea to remove the computer AFTER the battery is disconnected, just because they are so expensive.

The "keep alive" gadgets keep the computer powered up. They don't serve a purpose in this application because you really want power to the engine computer memory off so it doesn't get accidentally programmed (altered). The keep alive device is effectively a small power source that maintains 12V on the system but it doesn't have enough current available to harm you if a wrench gets across it.
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 11-24-2005, 11:11 AM
BstMech's Avatar
Join Date: Sep 2002
Location: TN. In the corporate states of America
Age: 43
Posts: 1,552
Wiki Edits: 0

Thanks: 0
Thanked 2 Times in 2 Posts
Originally Posted by milo
If you let the smoke out of some computers it'll kill em.
I've noticed that to be true with most electronics. LOL!
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 11-24-2005, 02:14 PM
Last photo:
Join Date: Jan 2003
Location: tennessee
Posts: 5,927
Wiki Edits: 0

Thanks: 0
Thanked 10 Times in 10 Posts
Fiurbird, You are right, definitely disconnect the battery. I did not mean to make it sound as if disconnecting the battery is a waste of time but all too often someone will think they can just do about anything they want with the welder without harm because the battery is disconnected so it will be safe. One still needs to exercise caution when welding on any vehicle, computer or not. It really is simple just look at where the welding will take place vs WORK clamp and ask "what will the current travel through in this configuration"? If welding on a door and clamped to THAT door then that is all that will be affected but if clamped to the frame and welding on the door then every thing capable of carrying current between body and frame will share the load plus the door hinges also
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 11-24-2005, 02:18 PM
Brian Martin,Freelance adviser
Last photo:
Join Date: Jun 2004
Location: San francisco bay area
Age: 58
Posts: 15,437
Wiki Edits: 0

Thanks: 4,198
Thanked 3,596 Times in 2,683 Posts
ICAR guidelines say don't weld within 18 inches of a computer. Just disconnect the battery and the 18 inches is all that is needed. It also suggests don't allow your feed line, ground cable or power supply cord to be in a circle, this could produce an electro magnet effect.

Reply With Quote Quick reply to this message

Recent Body - Exterior posts with photos

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
supercharger.... 73monte Engine 16 07-24-2010 10:27 AM
welder reccomendations? rally4x4racer Garage - Tools 32 10-14-2008 09:00 PM
basic welding question montea Body - Exterior 8 02-04-2005 01:01 PM
Ignotion Set-ups Native Gearhead Engine 8 11-29-2003 01:20 PM
Hi All I just Joined, Questions Re:454 rebuild Gay-Shark Engine 8 11-29-2003 10:25 AM

All times are GMT -6. The time now is 09:40 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.