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-   -   Mr. G. Brettin's Slow Motion Leg Hump (http://www.the370z.com/members-370z-gallery/129437-mr-g-brettins-slow-motion-leg-hump.html)

gbrettin 12-19-2019 08:56 PM

That's a reason why I went with carbon kevlar.

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Rusty 12-19-2019 10:18 PM

Quote:

Originally Posted by gbrettin (Post 3896000)
That's a reason why I went with carbon kevlar.

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To make them thick enough for the stress. You would be spacing the bearings out too far. Then you will end up with alignment problems between the rotor and caliper. Pushing the rotor to the outside. The rotor would no longer be centered in the caliper.

Zezus 12-20-2019 10:02 AM

What fenders are those?
They look slick!

gbrettin 12-20-2019 05:40 PM

Quote:

Originally Posted by Rusty (Post 3896054)
To make them thick enough for the stress. You would be spacing the bearings out too far. Then you will end up with alignment problems between the rotor and caliper. Pushing the rotor to the outside. The rotor would no longer be centered in the caliper.

I'll be sure to give it a good one over; but, the plate mounts completely flat and shouldn't be zero stress. Again, I'll look it over real good before anything happens. Thanks for the heads up.

gbrettin 12-20-2019 05:41 PM

Quote:

Originally Posted by Zezus (Post 3896143)
What fenders are those?
They look slick!

I'm assuming you mean the fender vents. Those are Finite element.

Zezus 12-20-2019 05:44 PM

Quote:

Originally Posted by gbrettin (Post 3896203)
I'm assuming you mean the fender vents. Those are Finite element.

Oh wow, with the way they are molded onto that car I assumed they were whole fenders.

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gbrettin 12-20-2019 06:06 PM

Quote:

Originally Posted by Zezus (Post 3896204)
Oh wow, with the way they are molded onto that car I assumed they were whole fenders.

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OHHH, those are Porsche RS vents (green fender in picture). I'm going to try moulding the Finite Element vents into the fenders and attempt to make it closer to that.

gbrettin 12-21-2019 02:53 PM

Starting welding on your car is completely reasonable right? Looks like I have a little grinding to do. I know what I'm getting for Christmas! :rofl2:

All joking aside. I'm pretty happy with it, being my first time. Everything is going to get cleaned up and leveled out with a grinder by me first. Then seam filler is going back in so it wont look like worms all over the engine bay.

The MIG welder had too much amperage and the feed was too fast. Both were turned down and things went a bit smoother.

All the pictures are of the good and bad, you get to see them all.
https://z7rxxg.dm.files.1drv.com/y4m...&cropmode=none
https://0rrxxg.dm.files.1drv.com/y4m...&cropmode=none
https://0brxxg.dm.files.1drv.com/y4m...&cropmode=none
https://yrqm0w.dm.files.1drv.com/y4m...&cropmode=none
https://ybqm0w.dm.files.1drv.com/y4m...&cropmode=none
https://zlqm0w.dm.files.1drv.com/y4m...&cropmode=none
https://y7qm0w.dm.files.1drv.com/y4m...&cropmode=none
https://zrqm0w.dm.files.1drv.com/y4m...&cropmode=none

Rusty 12-21-2019 03:13 PM

Practice on thinner sheet metal than what you will be welding on first before doing the actual welding to adjust your settings. Depending on your eyes. I found that somethings using a #8~#9 lens instead of a #10 or darker will help you see the seams better, but you may pay the price later with welding flash.

gbrettin 12-28-2019 07:18 PM

Ground down the wormy MIG welds, tapped off the seams and epoxy filled them smooth. If you're not a welder, better be a good grinder.

The taping shown below was an unbelievable PITA. Who am I kidding? The whole thing took me all day.

I couldn't get any in between shots of the epoxy because that stuff only has an 8min working time and my hands were covered in epoxy boogers.

https://0lrj0a.dm.files.1drv.com/y4m...&cropmode=none
https://z7rj0a.dm.files.1drv.com/y4m...&cropmode=none
https://0rrj0a.dm.files.1drv.com/y4m...&cropmode=none
https://0brj0a.dm.files.1drv.com/y4m...&cropmode=none
https://yrtpra.dm.files.1drv.com/y4m...&cropmode=none
https://ybtpra.dm.files.1drv.com/y4m...&cropmode=none
https://yrtdma.dm.files.1drv.com/y4m...&cropmode=none
https://ybtdma.dm.files.1drv.com/y4m...&cropmode=none
https://zltdma.dm.files.1drv.com/y4m...&cropmode=none
https://zbtdma.dm.files.1drv.com/y4m...&cropmode=none
https://0ltdma.dm.files.1drv.com/y4m...&cropmode=none
https://yrr4pq.dm.files.1drv.com/y4m...&cropmode=none
https://ybr4pq.dm.files.1drv.com/y4m...&cropmode=none
https://zlr4pq.dm.files.1drv.com/y4m...&cropmode=none
https://y7r4pq.dm.files.1drv.com/y4m...&cropmode=none
https://zrr4pq.dm.files.1drv.com/y4m...&cropmode=none
https://zbr4pq.dm.files.1drv.com/y4m...&cropmode=none
https://0lr4pq.dm.files.1drv.com/y4m...&cropmode=none
https://z7r4pq.dm.files.1drv.com/y4m...&cropmode=none

Rusty 12-28-2019 07:39 PM

If you hate grinding. You will become a good welder. :rofl2:

Did you use a sanding disc to smooth out your weld beads? What's quicker, is using a 4" x 1/8" grinding disc on your die grinder for roughing down. Then use the sanding disc for final.

gbrettin 12-28-2019 08:09 PM

I used the sanding disc in the picture (50grit). It chewed through the bulbus part of the weld pretty quick. I then changed up to a 36grit and I wish I led off with that! It also took everything down flat. Don't think I'd use a die grinder due to that.

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Rusty 12-28-2019 11:25 PM

Quote:

Originally Posted by gbrettin (Post 3897554)
I used the sanding disc in the picture (50grit). It chewed through the bulbus part of the weld pretty quick. I then changed up to a 36grit and I wish I led off with that! It also took everything down flat. Don't think I'd use a die grinder due to that.

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Ahhhhh......you are using an angle head die grinder in the one pic. Die grinders come in a couple of different types. Straight, 45 degree, and 90 degree heads. Short shaft and long shaft. 12,000 rpms all the way to 80,000 rpms. ;)

36 grit is pretty course. 50 grit is finer. I normally start with a 36 grit, and finish with a 80 grit. If I want it really smooth. I then move to a 120 grit.

gbrettin 12-29-2019 01:40 PM

Quote:

Originally Posted by Rusty (Post 3897585)
Ahhhhh......you are using an angle head die grinder in the one pic. Die grinders come in a couple of different types. Straight, 45 degree, and 90 degree heads. Short shaft and long shaft. 12,000 rpms all the way to 80,000 rpms. ;)

36 grit is pretty course. 50 grit is finer. I normally start with a 36 grit, and finish with a 80 grit. If I want it really smooth. I then move to a 120 grit.

Rusty, as always, thanks for the input!

I can't imagine stitch welding the ENTIRE car. lol. FWIW, both of my buddies at the shop told me not to do it. But... I was already elbow deep doing the rust repair and removing the false firewall. For someone considering doing some stitch welding, I really hope the stumble onto this thread.

Rusty 12-29-2019 01:55 PM

:tiphat:

Stitch welding a whole car. You better have it in a jig that you can turn. It's no fun when you have to twist yourself in knots trying to get into position to weld. :shakes head:


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