Modshack1
Go Kart Champion
Since there's a GB going on in the Vendor section, I thought I'd repost my comments here since I'm the first with a production model:
Last week I installed the RB. Simple install (easier than the Stern). As has been noted, this would be the last one to add to the Unibrace Trio as far as Chassis impact.
Early last week I removed my Stern, and noticed a difference...It is subtle and keep in mind I'm very sensitive to chassis dynamics. After adding back the RB the car came back together. It certainly compliments the XB/UB but realize it does different things than they do. Triangulating the Lower rear suspension arm mounts with the rear subframe ties this area together and reduces any flex from hard cornering and flex/pressure from the lower control arm mounts. The XB/UB are really Chassis stiffeners and deal with limitations in the body structure....and do that Quite well I'd say. The RB is for the guys looking for that last edge in handling and optimizing suspension actions.
Install was easy and all dimensions are spot on for no RSB or exhaust conflicts. Mine was a pre-production as I was working with Bruce on finalizing dimensions and fitment. No interference noted anywhere, even heavily loaded (4 passengers on the way to dinner Saturday).
Over the weekend I ran about 240 miles in some real twisty stuff. The car is buttoned down. A friend with a stock GTI and I swapped off for awhile and he was wowed with the combination of APR RSB's, DG springs, and The Unibrace trio. His car felt loose and soft in comparison. He immediately asked me what he needs to do to get his like mine..
Install is simple, requiring dropping the exhaust a bit, fitting the brace in place, then pivoting it up for the final bolt in:
Fully mounted:
As noted earlier, start with the XB for best immediate impact and Stabilizing the "Box" structure
Then the UB to handle the chassis "Twist":
The RB is icing on the cake. Here it is compared to the Stern Bar. Almost 2 lbs lighter too...
As far as function compared to the Stern I could detect no differences. They both do the same thing with the advantage going to the RB due to increased exhaust clearance and easier install...
All the install and fitting and beauty pics here:
http://public.fotki.com/ttschwing/gti-20-2011-stuff/rb-install/
The trio is highly recommended for those serious about their cars.
Some general thoughts on braces in general:
I've had a few cars (63 or so) and done braces on more than a few of them.
My take:
The Golf is basically an economy car. It was never designed as a high performance piece. Given that you must assume some limitations in the basic chassis and structure..
XB: Consider a shoe box with the end cut out of it...The box will be pretty flexy side to side. The hatch does little to stabilize that since it just latches and is hinged at the top...No real stability enhancing structure. Take the XB, tie the strut towers/Structure together, and the box gains stability. The flex is countered by the Triangulation of the Brace. Biggest win on this one.
UB: Take that same shoebox and twist it...Lottsa flex. Double the structure on the bottom and the potential flex is reduced. If you think the light Sheet metal tie bars do anything you're delusional. Adding to the bracing, spreading it over a wider area and the chassis twist is reduced. #2 on the Bracing hit list.
RB: Most of the cornering forces are transmitted through the lower control arms. While this area (stock) is pretty stiff, gusseted etc, Tieing those forces together and triangulating them to the rear subframe stiffens that whole area up. Flex is reduced and forces spread over more attachment points.
They each do something different, but in combination, make the car far stiffer than originally designed. A stiffer chassis allows the suspension to do it's job. Sway bar changes result in more precise control, and Spring rates are not absorbed as much by the chassis, but rather allowed to do what springs are supposed to do. Everything gets more precise. Some of these changes are wasted on the average street driver, but if you value precision and drive your car a little harder than average, you'll appreciate the differences...
That's my story and I'm sticking to it...
__________________
Last week I installed the RB. Simple install (easier than the Stern). As has been noted, this would be the last one to add to the Unibrace Trio as far as Chassis impact.
Early last week I removed my Stern, and noticed a difference...It is subtle and keep in mind I'm very sensitive to chassis dynamics. After adding back the RB the car came back together. It certainly compliments the XB/UB but realize it does different things than they do. Triangulating the Lower rear suspension arm mounts with the rear subframe ties this area together and reduces any flex from hard cornering and flex/pressure from the lower control arm mounts. The XB/UB are really Chassis stiffeners and deal with limitations in the body structure....and do that Quite well I'd say. The RB is for the guys looking for that last edge in handling and optimizing suspension actions.
Install was easy and all dimensions are spot on for no RSB or exhaust conflicts. Mine was a pre-production as I was working with Bruce on finalizing dimensions and fitment. No interference noted anywhere, even heavily loaded (4 passengers on the way to dinner Saturday).
Over the weekend I ran about 240 miles in some real twisty stuff. The car is buttoned down. A friend with a stock GTI and I swapped off for awhile and he was wowed with the combination of APR RSB's, DG springs, and The Unibrace trio. His car felt loose and soft in comparison. He immediately asked me what he needs to do to get his like mine..
Install is simple, requiring dropping the exhaust a bit, fitting the brace in place, then pivoting it up for the final bolt in:
Fully mounted:
As noted earlier, start with the XB for best immediate impact and Stabilizing the "Box" structure
Then the UB to handle the chassis "Twist":
The RB is icing on the cake. Here it is compared to the Stern Bar. Almost 2 lbs lighter too...
As far as function compared to the Stern I could detect no differences. They both do the same thing with the advantage going to the RB due to increased exhaust clearance and easier install...
All the install and fitting and beauty pics here:
http://public.fotki.com/ttschwing/gti-20-2011-stuff/rb-install/
The trio is highly recommended for those serious about their cars.
Some general thoughts on braces in general:
I've had a few cars (63 or so) and done braces on more than a few of them.
My take:
The Golf is basically an economy car. It was never designed as a high performance piece. Given that you must assume some limitations in the basic chassis and structure..
XB: Consider a shoe box with the end cut out of it...The box will be pretty flexy side to side. The hatch does little to stabilize that since it just latches and is hinged at the top...No real stability enhancing structure. Take the XB, tie the strut towers/Structure together, and the box gains stability. The flex is countered by the Triangulation of the Brace. Biggest win on this one.
UB: Take that same shoebox and twist it...Lottsa flex. Double the structure on the bottom and the potential flex is reduced. If you think the light Sheet metal tie bars do anything you're delusional. Adding to the bracing, spreading it over a wider area and the chassis twist is reduced. #2 on the Bracing hit list.
RB: Most of the cornering forces are transmitted through the lower control arms. While this area (stock) is pretty stiff, gusseted etc, Tieing those forces together and triangulating them to the rear subframe stiffens that whole area up. Flex is reduced and forces spread over more attachment points.
They each do something different, but in combination, make the car far stiffer than originally designed. A stiffer chassis allows the suspension to do it's job. Sway bar changes result in more precise control, and Spring rates are not absorbed as much by the chassis, but rather allowed to do what springs are supposed to do. Everything gets more precise. Some of these changes are wasted on the average street driver, but if you value precision and drive your car a little harder than average, you'll appreciate the differences...
That's my story and I'm sticking to it...
__________________
Last edited: