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The Good and Bad Driving Dynamics Effects of my Ti Roll Bar
Howdy Gents, I finished my Porsche factory euro spec WP GT2 RS Titanium roll bar install two weeks ago but I hadn't taken the opportunity to drive the car in a manner where I noticed any differences in driving dynamics. Today I took the GT2 out to a rural country road I have driven many times in this car and other race prepped vehicles...pretty decent elevation changes (we are talking Florida here) with a good albeit brief variety of corners including one off camber, some triple digit sweepers and a couple downhill turns at the end of high triple digit straightaways. Being the Monday after the 4th, traffic was almost non existent today and I drove the outbound and inbound legs at enough speed to heat the tires a bit and to look for any specific areas I needed to take extra caution and then I decided to give the GT2 a kick and see what we could see. It was pretty eye opening, where the car when pushed would normally get to be a bit of a handful on the edge before (I call it up on her toes), now everything seemed like a no brainer, completely planted and just begging for more throttle. It was frankly very surprising to me how different the car feels at speed on both the straights and the corners. I have never had a car with a roll bar so had no baseline of expectations. After my high speed runs I was so surprised with the difference I decided on the way home I would turn the nannies off and see what the car felt like at low speed loss of traction time when accompanied by instituted body roll dynamics (aka Drifting). Again the car felt very different, the transition into and out of loss of traction time was MUCH more predictable. I don't claim to be a pro drifter but even with my limited skill set the bar made a huge difference. So lots of good effects but the only bad effect definitely has my attention; whereas I used to be able to get to my driving limit pretty easily, the car now feels so planted my limit is way down range somewhere, which means it will be reached at a much higher rate of speed. I don't think it is safe to push up near that edge on the street, well other than in very select circumstances, which has me rethinking some of my driving patterns. If anyone is rolling without a bar I definitely would offer the opinion you should consider adding one. And whoever the "amateur's" name was that sourced and installed this beast needs a damn round of applause
OK I'll bite. I've always been under the impression these type of rolls bars were more for looks and bolting racing harnesses to?
I couldn't read the OP post, needs some serious help with breaking text up.
But adding a bar does help stiffen the rear. Thing of it as a strut tower brace like people run on the 964/993's. The chassis do flex you can't really tell that until you put a bar in. When I caged my 993 for club racing prep, I was amazed at how much the chassis was stiffened. For the 997/991 GT3 the rear bar does help.
your Ti roll bar is a really cool piece no doubt. But a bolt in. roll bar does literally nothing to improve the overall driving dynamics. It just doesn’t do enough for torsional stiffness to matter. I’d bet it actually makes the best drivers slightly slower because of the weight.
It is no doubt safer, which is a good thing.
Originally Posted by numnut
But adding a bar does help stiffen the rear. Thing of it as a strut tower brace like people run on the 964/993's. The chassis do flex you can't really tell that until you put a bar in. When I caged my 993 for club racing prep, I was amazed at how much the chassis was stiffened. For the 997/991 GT3 the rear bar does help.
there is a huge difference between a proper welded cage vs a bolt on roll bar. A cage you can feel. A bolt in roll bar, not a chance.
I've never seen someone so excited for a rollbar in a car they drive on the street for 30 miles and never track. OP just seems like a glutton for abuse.
High triple digit straightways… like > 800MPH?? This post has to be a joke.
I can't understand how anyone could misinterpret my statement on a car with a certified 211 mph top speed, but apparently you found a way, which I guess should not surprise me.
I've never seen someone so excited for a rollbar in a car they drive on the street for 30 miles and never track. OP just seems like a glutton for abuse.
Lol, I can tell you've never been through an F plane Program Readiness Review meeting. Trust me, this ain't "abuse". But I am impressed you have followed my posts and know who I am, I can't say the same As to never tracking, as I have stated before I don't have a desire to just run laps on a track. I suspect I am one of the few here that has had a Pro/Expert Racing license in a national racing association and actually raced in a top level series sponsored racing season, But that was a long time ago and when I made the decision to turn that page I moved on. My GT2 is a fun street car for me and a very good one, that I am capable of pushing to a very fine edge when I choose to. Have a great day
07-05-2021, 05:45 PM
The Good and Bad Driving Dynamics Effects of my Ti Roll Bar
