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Anybody with the SFR front control arms? Any problems?

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Old 04-08-2008, 05:18 PM
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Ken D
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Just FYI, Wrightwood Racing (aka 'Charley Arms') typically manufactures arms in batches. Charley normally doesn't do singles/one-off requests. So if you're interested in a set it can be a multi-month wait until they get enough orders to spark up the machines.
Old 04-08-2008, 05:23 PM
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TonyG
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FYI... I do know one person that runs the Kokeln A arms. He's been POC racer for years and is a fast driver. He's had them on for a couple seasons now with no obvious problems.

It would be neat if someone could get him to remove the rod ends and have them x rayed to see what the condition is after some track time :-)

Some how I don't see him wanting to do it for the sake of the argument....


TonyG
Old 04-08-2008, 05:28 PM
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adrial
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At a glance .. the Kokeln design looks better than the SFR design since the rod end is cantilevered MUCH less in the Kokeln arm.
Old 04-08-2008, 05:30 PM
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Originally Posted by adrial
At a glance .. the Kokeln design looks better than the SFR design since the rod end is cantilevered MUCH less in the Kokeln arm.

And beefier.
Old 04-08-2008, 05:58 PM
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anders44
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someone should bump the charlie groupbuy I think, we are not that many far from reaching the goal
Old 04-09-2008, 10:46 AM
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944CS
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if you showed that design with that ball joint configuration to a real engineer and asked him to make it for you he'd tell you f*ck that, that's bullsh*t, go f*ck yourself. seriously
Old 04-09-2008, 01:18 PM
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TurboTim
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Originally Posted by Kool
And beefier.


We use a 3/4" heim. Kokeln uses a 5/8" heim. BTW, these are the same heims that are used on alot of sandrails that jump 150ft through the air. They are way overkill for this application. And to top it off, we are not seling these anymore.
Old 04-09-2008, 01:20 PM
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Originally Posted by TurboTim
We use a 3/4" heim. Kokeln uses a 5/8" heim. BTW, these are the same heims that are used on alot of sandrails that jump 150ft through the air. They are way overkill for this application. And to top it off, we are not seling these anymore.
wow - 3/4" IS HUGE.

considering other offering in it's place?
Old 04-09-2008, 02:08 PM
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Originally Posted by TurboTim
We use a 3/4" heim. Kokeln uses a 5/8" heim. BTW, these are the same heims that are used on alot of sandrails that jump 150ft through the air. They are way overkill for this application. And to top it off, we are not seling these anymore.
thanks for the clarification Tim.

Why have you stopped selling them?
Old 04-09-2008, 02:26 PM
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M758
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Originally Posted by adrial
The obvious (to any engineer) design thought is that the rod end is put into some serious bending when you jump on the brakes.

The stress concentration factor from the threads won't be an issue statically, but for fatigue it will be VERY significant.
Yep,
My exact thoughts when I first saw these years ago. I don't have and experience with them however.
Old 04-09-2008, 03:34 PM
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TurboTim
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Originally Posted by Kool
thanks for the clarification Tim.

Why have you stopped selling them?

They are not a big seller and we are trying to get rid of products that dont sell and replace them with product that do sell
Old 04-09-2008, 04:19 PM
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Sounds logical enough.
Old 04-10-2008, 10:10 AM
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Mike Lindsey
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We use a 3/4" heim. Kokeln uses a 5/8" heim. BTW, these are the same heims that are used on alot of sandrails that jump 150ft through the air. They are way overkill for this application. And to top it off, we are not seling these anymore.
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This is incorrect. The Kokeln arm rod is 3/4" and always has been. I have a set on our race car
and know how to use a dial caliper. The company that builds our LR arms used to build theirs and
they are 3/4" as well and that aspect of the arm is the same.

I just wanted to correct the mistake, not get into a discussion about arms.

Mike
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Old 04-10-2008, 01:17 PM
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TurboTim
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Originally Posted by Mike Lindsey
We use a 3/4" heim. Kokeln uses a 5/8" heim. BTW, these are the same heims that are used on alot of sandrails that jump 150ft through the air. They are way overkill for this application. And to top it off, we are not seling these anymore.
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Tim


This is incorrect. The Kokeln arm rod is 3/4" and always has been. I have a set on our race car
and know how to use a dial caliper. The company that builds our LR arms used to build theirs and
they are 3/4" as well and that aspect of the arm is the same.

I just wanted to correct the mistake, not get into a discussion about arms.

Mike

We had an early set on a car here and I could have sworn they were 5/8".
Old 04-10-2008, 01:19 PM
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Mike Lindsey

Do you offer your arms without the rear caster mount?


TonyG



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