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  #1  
Old December 4th, 2008, 03:03 PM
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radius undone

just in case anyone is running these silly perforated radius arms.....may be worth keeping an eye on them
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new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

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  #2  
Old December 4th, 2008, 03:18 PM
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Ouch, so much for reducing unsprung weight!
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Old December 4th, 2008, 03:46 PM
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My D90 is lighter, but I will have to keep a watchfull eye. Which brand? Did it get hit hard?
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Old December 4th, 2008, 04:34 PM
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I don't think you really need to hit anything, the front radius arms take a lot more abuse than we think they do.

Watch this video...

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Old December 4th, 2008, 05:21 PM
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Is that Jefro's rig?
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Old December 4th, 2008, 05:24 PM
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How much weight are you actually saving with the holes?
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  #7  
Old December 4th, 2008, 06:56 PM
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yes thats Jeffro wrig.

I dont think he hit anything really, just normal (?) trail abuse.

Don't think they where installed to save weight,...needed castor correction. I generally use (or build) RTE style.
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new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

"Dedicated to the resurrection of junk through engineering?"
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Old December 4th, 2008, 07:01 PM
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I bet that made hard braking interesting.
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  #9  
Old December 4th, 2008, 07:10 PM
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The only reason to drill those holes is to save weight and I bet it didn't save much. You can still get them with castor correction without the holes as this is done proximally near the bushing attachment point.

Most the the manufacturers that make the castor corrected arms are making them for "racing" so they seem to like to drill them for weight savings and possibly cosmesis.

They look cool but I was afraid that's what might happen.

This is a great post as it's something worth learning from although numbers of failures are probably pretty low.
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Old December 4th, 2008, 07:10 PM
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'twas ok as the other side hadn't QuiTe broken yet.
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new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

"Dedicated to the resurrection of junk through engineering?"
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  #11  
Old December 4th, 2008, 08:55 PM
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On my QT arms the holes are drilled along the radius arm and not around the axle. The same is true on my Equipe arms. That is why I was curious about the manufacturer. Is there rust/corrosion in the area? How malleable is the steel? Somehow this doesn't compute in my engineer's brain. Failure should have been at one of the attachment points unless there is a crack or something else in that area.
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Old December 4th, 2008, 10:52 PM
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If you look carefully along the left hand side it looks like the outer strip of steel peeled off the core (part with holes in it) at the weld (looks like they are welded not likely carved out from a billet). After that it just tore like a piece of paper through the stress riser, ie the hole next door. Both the QT and Equipe have same designs. I have heard of weld imperfections and quality issues, ie consistency issues on some of the QT stuff.
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Old December 5th, 2008, 07:24 AM
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There would be considerable stress in that area during extreme articulation (literaly trying to twist the axle) . There is no corrosion present. They were not damaged from impact. They were a little over a year old.
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new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

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  #14  
Old December 5th, 2008, 10:58 AM
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I'm curious how much of a factor rust can be with regarding strength and durablility retention. I don't think surface rust would be much of an issue, but at what point would rust really start to become a factor? I saw this pic on a rig on ebay with Equipe lower control arms, with a "slight" amount of rust. It will only get worse without addressing the problem. Not sure if I would like to see that under my rig.

I'm still in my "research" phase regarding suspension for my D90 and Equipe and other Euro manufactured suspensions are possible options, but they seem a little steep in price for what you get. Someone tell me different Seeing that photo you posted makes me wonder if they are worth it. I'm not exactly sure if those arms are Equipe, Scorpion or some other manufacturer, but I might be heading in a different direction (when it comes to the "perforated" design).

Anyone out there knows who produces a setup that pays special attention to corrosion resistance? Living in the Northeast makes this a concern for me. Thanks!
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  #15  
Old December 5th, 2008, 11:05 AM
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Those have the equipe logo on them but for $1400 I would expect them not to rust like that. I thought they were anodized or something because they look so good when they are new. Thanks for the picture, I am now thinking differently about the equipe stuff.
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  #16  
Old December 5th, 2008, 03:53 PM
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Equipe makes the billet radius arms out of ergal (which I believe does not rust but I might be wrong here).
The Qt ones are made of steel strips welded together.
I have an old issue of LRM (or LRW) showing a pic of the parts I might scan for those interested...
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Old December 5th, 2008, 04:15 PM
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Does not look like the parts were serviced correctly and failed to me! LOL

Bolts were overtorqued-installation problem! LOL

Why would anyone even run those holy parts. Cleansing of the gene pool, attracting vain LR owners?
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  #18  
Old December 8th, 2008, 07:49 PM
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In fairness these arms were made by QT Services and aparently intended as "show" items for display only and were not intended for installation. I'm not sure how they ended up on the truck as we did not install them.

Dave Marsh of QT Services has been very helpfull in correcting this situation in a true "stand up guy" fashion.
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new expansion complete. Not only are we the only Rover shop in Eliot Maine...now we're also the biggest.

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