Roush UCA

[stevbd]

I'm trying to order the Roush UCA, the one @BillyJRacing used on his project S197, and am being told it's been discontinued? Does anyone know anything about this or where I might find one?
Thanks.

 

[TA28]

Fully boxed with bearing and powder coated Grey. Ifso I have 1 on a car nice piece all tig welded. See them on ebay

 

[WesDuenkel]

I'm trying to order the Roush UCA, the one @BillyJRacing used on his project S197, and am being told it's been discontinued? Does anyone know anything about this or where I might find one?
Thanks.

Kenny Brown sells a nice one. I found no NVH penalty, and it revises geometry on lowered cars to boot: https://kennybrown.com/collections/...module-for-2005-2014-mustang-and-shelby-gt500

 

[drj2k1]

I got my Roush UCA from Summit, it was one of the last ones I saw in stock when I was searching. I'd check around with some of the big suppliers (i.e. Summit, American Muscle, etc.).

Good luck in your search, so far I love the Roush arm on my dual purpose autocross/street car setup.

-J

 

[blacksheep-1]

Or.. you could just use the stock one

 

[WesDuenkel]

Or.. you could just use the stock one

This is not a constructive comment. Snark is fine...if you back it up with sound reasoning or technical info. Let's be smarter than a Facebook comment thread, m'kay?

 

[TMSBOSS]

Actually, there are several folks here who do simply run the stock piece, and win.

 

[stevbd]

This is not a constructive comment. Snark is fine...if you back it up with sound reasoning or technical info. Let's be smarter than a Facebook comment thread, m'kay?

Wes, I don't think he meant it to be snarky and actually in the end I did decide to just replace my trashed UCA with another stock one.

As I understand it, the extra compliance of stock can be an advantage on a road course compared to spherical or poly in terms of not shocking the tires and blowing off traction. Cheap and no NVH is nice too. The "intro" suspension kits from Cortex and Maximum Motorsports seem to make do with the stock link, and I think several race teams (one of which I believe @blacksheep-1 works with) use it successfully as well - although that may also be a rules thing. I'm sure there are improvements to be had but clearly one can go fast with the stock link.

Billy Johnson described the Roush unit as kind a Goldilocks solution, stiffer than stock and geometry improvements but still with enough compliance and quiet, which I found attractive. But with the Roush unavailable (and the 11-14 version long since discontinued) I decided to just go with stock and get the anti-squat improvement with some modest lowering and LCA brackets. I put the few dollars I saved towards an Eaton trutrak.

By the way, I'm still loving your book and thanks for writing it. I return to it often.

 

[blacksheep-1]

This is not a constructive comment. Snark is fine...if you back it up with sound reasoning or technical info. Let's be smarter than a Facebook comment thread, m'kay?

not meant to be snarky at all. I use the stock upper with FP suspension on mine. Maybe because I've always had to low buck things, I've tried to spend my money wisely. The stock trailing arm is fine for about 90% of the applications, Billy Johnson (I crew on his IMSA car BTW) likes something with a bit less deflection, probably a driving style thing. but again, the stock upper works fine for almost any application you can think of, spend that hard earned money elsewhere.
Maybe the reasoning behind making a change should be.. "what is the benefit of this?" rather than wholesale changes.

 

[stevbd]

@blacksheep-1 to your point I realized I was kind of internet racing on this upper link replacement project and asked myself what I didn't like about the stock one. I realized my answer was, nothing, until it started clunking lol. I definitely fall into your 90 percent, just driving my car to work and messing around at track days.

 

[TA28]

I would have to say blacksheep is right. I have the roush arm in my car ( fr500c ex rehagen car) but I also changed out lower arms they are full heim jointed.also pan hard swapped for cortex watts fully jointed.so unless your going fully bearinged rear suspension not needed.
I would use the ford racing bushing in .
I also have a multimatic 3rd arm the roush arm was 1/4 of the price of multimatic arm.
Chris

 

[blacksheep-1]

I would have to say blacksheep is right. I have the roush arm in my car ( fr500c ex rehagen car) but I also changed out lower arms they are full heim jointed.also pan hard swapped for cortex watts fully jointed.so unless your going fully bearinged rear suspension not needed.
I would use the ford racing bushing in .
I also have a multimatic 3rd arm the roush arm was 1/4 of the price of multimatic arm.
Chris

Someplace on here I posted the old rules package for PWC, it was pure gold, I tried to find it on line recently and whoever runs PWC these days has removed, sad, because it was S197 suspension 101. If anyone downloaded it, please post it back up.