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Kirkham Motorsports

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  #1 (permalink)  
Old 07-22-2015, 05:47 PM
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Old 07-30-2015, 05:04 PM
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Beautiful - 20 lbs with cover.

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Old 10-06-2015, 07:06 PM
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I was unable to source steering arms for the ATS spindles. We took one of the Gen 1 steering arms and cut the webbing out of the ball joint relief so the arms would be oriented outboard.

I have spent some time with Tony Woodward learning how to properly locate one of his racks. I want to raise the rack and rotate it down some if I can. In the process of learning this we also discussed steering arm length and it's relationship with steering ratio. That led to some study on Ackermann which is still in process.

I took the cut up arm to one of our machinist's and had a prototype machined. He re-modeled the cut up with 100% Ackermann, 4 3/4 arm length, and 5/8 thru for the linkage bolt.

They fit very nicely. A little rework in order, but I may finally order the rack










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Old 10-27-2015, 02:30 PM
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3.5"










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Old 11-05-2015, 05:06 PM
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Oil Lite Bronze





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Old 11-30-2015, 03:40 PM
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The Minilites only come in a 4.5 backspace. The replica stuff is 3.8. I have the Minilites modeled with a .5" spacer.

He have tooling ordered to run the following on our 5 axis. This will get rid of the spacer, decrease the scrub radius, and slow roll center migration. There is no stabar mount yet. We want to relocate the front stabar possibly mounting in the bottom center of the arm. We are going to use 7050 aluminum for the arms.

Also (my car) the rear radius rods are not square enough to the shells to run bronze bushings. With no give in the bushings the rod ends rub the mounting tabs at the cradle.







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Old 12-01-2015, 10:48 AM
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Quote:
Originally Posted by ERA2076 View Post
Oil Lite Bronze

I absolutely DON'T RECOMMEND this. It's putting a nasty bending moment into the arm and lower pivot shaft. As the suspension goes through its travel, the arms don't remain perpendicular to the hub carrier. Some compliance is necessary.

If you want "solid" on the outer end, use rod ends or spherical bearings.

Last edited by strictlypersonl; 12-01-2015 at 10:58 AM..
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Old 12-01-2015, 12:08 PM
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Quote:
Originally Posted by strictlypersonl View Post
I absolutely DON'T RECOMMEND this. It's putting a nasty bending moment into the arm and lower pivot shaft. As the suspension goes through its travel, the arms don't remain perpendicular to the hub carrier. Some compliance is necessary.

If you want "solid" on the outer end, use rod ends or spherical bearings.
Yes - I found that out when I cycled it. We are working on rod ends.

x-chr
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