The Good and Bad Driving Dynamics Effects of my Ti Roll Bar
#16
Three Wheelin'
Thread Starter
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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.
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.
It is no doubt safer, which is a good thing.
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.
#17
Rennlist Member
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I think a rollcage in a Porsche {or any car} is a cool factor for some folks. It sure is for me. I don't track mine but love my bbi streetcup bar. I think a bar looks perfectly at home in any Porsche. Cudos to the OP for springing for a Ti bar. Life is very short guys, live it like you want. Dont sweat the haters.
#18
Three Wheelin'
Thread Starter
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Interesting proposition, made me stop and think about the runs. I will have to disagree, I had actually been anticipating no difference and to be frank this road unloads the suspension when coming over a hill into drop away right sweeper, which in the past has scared the hell out of me and made me start lifting (which of course in itself can be an issue), I expected the same feeling but nothing, it just stayed planted and I carried much more speed into the hard braking zone for the slow 90 degree right turn. The speed-o-meter was definitely not affected by a placebo
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Last edited by usrodeo4; 07-06-2021 at 11:48 AM.
#20
Three Wheelin'
Thread Starter
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I think a rollcage in a Porsche {or any car} is a cool factor for some folks. It sure is for me. I don't track mine but love my bbi streetcup bar. I think a bar looks perfectly at home in any Porsche. Cudos to the OP for springing for a Ti bar. Life is very short guys, live it like you want. Dont sweat the haters.
#21
Racer
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When added the rollbar (steel, custom fabricated 1-piece), I couldn't notice any difference in twisty mountain road driving. When I did he same on my Shelby GT350R, it was definitely noticeable which I guess makes sense as was a larger car probably with more chassis flex.
Last edited by FogCitySF; 07-06-2021 at 04:13 PM.
#22
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I think a rollcage in a Porsche {or any car} is a cool factor for some folks. It sure is for me. I don't track mine but love my bbi streetcup bar. I think a bar looks perfectly at home in any Porsche. Cudos to the OP for springing for a Ti bar. Life is very short guys, live it like you want. Dont sweat the haters.
#23
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Deleted
Last edited by 3-Pedals; 07-06-2021 at 09:16 PM.
#24
Nordschleife Master
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I am certainly no professional racer, but I've been a reasonably successful club racer for a fairly long time. So my ability for my butt to be in tune with the driving dynamics is pretty reasonable. As you were on the street, you were no where near the cornering limit of the car. It takes a good 4-5 laps on a race track, driving in anger, to get tires up to full temp (I have the motec internal IR tire temp data to back this up). So there is no real chance to approach that on the street. You are best getting the tires to maybe 150 degrees, not the ~200 where they really have max grip best.
Anyway, as I have said before, I think the fact that you managed to get one of these Ti bars in the US and install it so meticulously is incredibly cool. Its a beautiful piece that really compliments the car. Enjoy the ride.
#27
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OP let me drive the car to confirm what you're feeling
...I'm in FL as well...
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#28
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I don't know if you're aware but the torsional stiffness of a GT2/3 RS is around 40,000 Nm/deg.
If you switch the g meter on in your gauge cluster - when you are pulling close to ~ 1.6g (lateral) you will get a sense of both limit of grip and roll stiffness.
You will only get to these limits on a track and under hard cornering.
Good to see you're enjoying your car but don't discount placebo![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
If you switch the g meter on in your gauge cluster - when you are pulling close to ~ 1.6g (lateral) you will get a sense of both limit of grip and roll stiffness.
You will only get to these limits on a track and under hard cornering.
Good to see you're enjoying your car but don't discount placebo
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#30