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Making Steel Alloys for 911

6s and 7Rs, forged aluminum barrels, reconditioned steel centers, 20 steel rivets like the real ones. I'll be painting these this week. I'm thinking either classic silver or a medium grey metallic. 7Rs are 5 pounds lighter per wheel than a 5,5" steelie. Forged barrels are 3x stronger than the original rolled aluminum barrels. I'll be making wide ones for my latest 911 build.

https://youtu.be/u3waICBKGYY
https://youtu.be/3lnaB535B6c


Last edited by Fixer; 09-10-2019 at 04:59 PM..
Old 09-10-2019, 04:51 PM
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Interested in making more if I provide the centers? I would be interested in 7" & 8" for SC flares.
Old 09-11-2019, 08:13 AM
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Awesome work Fixer! If you are running S calipers, be sure to check clearances! Offset may need to be adjusted for spacers to clear calipers larger than "M".
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Old 09-11-2019, 11:23 AM
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Those are pretty much my dream wheels.
Old 09-11-2019, 11:32 AM
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Quote:
Originally Posted by Cory M View Post
Interested in making more if I provide the centers? I would be interested in 7" & 8" for SC flares.
Yes I'm making a set for my STR and Speedster #37. They're kind of a PITA to make.
Old 09-11-2019, 12:00 PM
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Awesome work Fixer! If you are running S calipers, be sure to check clearances! Offset may need to be adjusted for spacers to clear calipers larger than "M".
Thanks, clearance is great with this barrel design.
Here's the back of one I'm working on which gets more rivets.

Old 09-11-2019, 12:07 PM
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Did you trim the steel center? Hard to tell. If you did, then that would have solved it for sure. Excellent work!
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Old 09-11-2019, 12:11 PM
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Quote:
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Those are pretty much my dream wheels.
Thanks, I'll post some painted pics of the 6s and 7Rs in a few.

The 7Rs I tweaked a few mms inward for SWB rear quarter clearance. Lots of rubber back there.


Old 09-11-2019, 12:15 PM
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100% awesome.
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Old 09-12-2019, 07:08 PM
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Quote:
Originally Posted by Cory M View Post
Interested in making more if I provide the centers? I would be interested in 7" & 8" for SC flares.
One of my fave


+1 steelies in 16" x 7&8, i would be very interested.
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Old 09-13-2019, 01:45 AM
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Did you trim the steel center? Hard to tell. If you did, then that would have solved it for sure. Excellent work!
Thanks!

They get trimmed a few .001" to be made perfectly round on the outside only. Each wheel is fit together a few .001" tight.
Attention to insulate (and weatherproof) the steel from the aluminum is made to prevent galvanic corrosion. (20) 1/4" (.250" dia pin) steel button head rivets are used.

Regarding the rivet strength, for comparison, a single mild steel 16D nail (.165" dia) requires 2000 pounds of pressure to shear in half x 20 = 40,000 pounds. My rivets have more shear strength than a 16D nail.

Even though Porsche raced on these wheels and other wheel makers made wheels this way with less and smaller rivets (such as these Borrani wheels off a 1968 Maserati I'm restoring) I'm testing them..(read: beating on them)


9 rivets in the Borrani above for a bigger heavier sedan Maserati

Last edited by Fixer; 09-13-2019 at 02:58 AM..
Old 09-13-2019, 02:05 AM
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100% awesome.
Thanks
Old 09-13-2019, 02:54 AM
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Great work!
Please let me know if you decide to produce these for sale.
Old 09-14-2019, 08:08 AM
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Great work!
Please let me know if you decide to produce these for sale.
I am,

Here's the set of 6s and 7Rs painted. 5 med wet coats of urethane enamel over epoxy primer.



I call this "outlaw grey" 👍🏼 https://youtu.be/ZnKXRXT-XrI

Last edited by Fixer; 09-14-2019 at 01:02 PM..
Old 09-14-2019, 12:59 PM
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6 hours cure time and safe to move. You can see how much better they look. All you painters know this. I'll get this color formula from my paint guy. He can put an electronic eye on it. That way we can make more "outlaw grey".

Oh, I explained on Instagram @the_r_institute why, we mixed the color from scratch.
Old 09-14-2019, 04:01 PM
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1-Subscribed
2-Beautiful work
3-PM sent
Old 09-15-2019, 06:25 AM
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Great work.
Old 09-15-2019, 06:56 AM
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Could you give us an idea of pricing for the 6, 7, and 8's ?
Thanks, Bill K
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Old 09-15-2019, 07:12 AM
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1-Subscribed
2-Beautiful work
3-PM sent
Thank you!
Old 09-15-2019, 01:03 PM
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Great work.
Thanks!
Old 09-15-2019, 01:04 PM
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