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M3 Track: Racing and DE Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start!


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Old Sun, Jun-16-2019, 05:55:50 AM   #11
STAATS
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Default Re: Welding RTAB Pockets: Wire and Gas Tips

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Originally Posted by ThunderMoose View Post
Take a look at this video
That video always scares the hell out of me... seems somewhat isolated but I'm annoyed i didn't see this before i did my reinforcement and get some welds on the pockets when i was down there... will definitely have to head back down there and look at doing this at some point...
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Old Tue, Jun-18-2019, 03:29:27 AM   #12
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Default Re: Welding RTAB Pockets: Wire and Gas Tips

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Take a look at this video

https://youtu.be/J4zPECASIrs


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I was two cars behind when it happened. Never seen anything quite like it.

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Old Wed, Jul-24-2019, 02:11:27 AM   #13
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Default Re: Welding RTAB Pockets: Wire and Gas Tips

So I ended up doing this myself with a Miller 211 and .030 wire and 75/25 gas. Was very easy. One has to start the bead on the pocket metal, then move to the unibody. And I found autoset to be too hot.

--Peter
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Old Wed, Jul-24-2019, 03:57:16 AM   #14
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Default Re: Welding RTAB Pockets: Wire and Gas Tips

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Originally Posted by herrubermensch View Post
So I ended up doing this myself with a Miller 211 and .030 wire and 75/25 gas. Was very easy. One has to start the bead on the pocket metal, then move to the unibody. And I found autoset to be too hot.

--Peter
Did you zig-zag/ circle between surfaces, or stay on the pocket and dart to the unibody occasionally?
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Old Wed, Jul-24-2019, 01:48:17 PM   #15
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Default Re: Welding RTAB Pockets: Wire and Gas Tips

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Did you zig-zag/ circle between surfaces, or stay on the pocket and dart to the unibody occasionally?
Started with the wire in the gap between pocket and unibody, then zig-zagged. But not in a continuous arc. 3-4 second stich welds.
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Old Wed, Jul-24-2019, 07:17:11 PM   #16
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Default Re: Welding RTAB Pockets: Wire and Gas Tips

When we did mine, we found threading a bolt into one of the chassis mounts for the RTABs worked great as a ground for the welder.

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Old Wed, Jul-24-2019, 08:47:23 PM   #17
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Default Re: Welding RTAB Pockets: Wire and Gas Tips

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Originally Posted by ThunderMoose View Post
Take a look at this video

https://youtu.be/J4zPECASIrs


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To be fair you must mention the context - that was a car that was used for racing for almost it's entire life.
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Old Wed, Jul-24-2019, 11:16:30 PM   #18
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Default Re: Welding RTAB Pockets: Wire and Gas Tips

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Originally Posted by Fhcrubarb View Post
To be fair you must mention the context - that was a car that was used for racing for almost it's entire life.


Fair point but this is the track sub forum so directly applicable to many of us.


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Old Thu, Jul-25-2019, 12:04:44 PM   #19
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Default Re: Welding RTAB Pockets: Wire and Gas Tips

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Originally Posted by nholmes View Post
When we did mine, we found threading a bolt into one of the chassis mounts for the RTABs worked great as a ground for the welder.

Great tip! Wish I had thought of that!

--Peter
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Discussing Welding RTAB Pockets: Wire and Gas Tips in the M3 Track: Racing and DE Forum - Best mod for speed is learning to get the most out of what you currently have. Tracks and DE's is the place to start! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)