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ambition exceeded talent -- roll bar question

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Old 06-25-2011 | 08:25 PM
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Default ambition exceeded talent -- roll bar question

Too much speed into Turn 1 at Harris Hill taught me a couple lessons:

1a. Slow down.
1b. Push the clutch in before going backwards.
2. It's time to replace the BK harness bar with roll-over protection.

From previous searches, I think I'd like a GMG bolt-in product (over Tek or DAS). Within the GMG catalog:

    At 6'5", I have the driver's GT3 euro seat bolted directly to the floor as far back as possible with some slim BK mounts (no sliders). I'm guessing/hoping that the GMG solutions will accommodate. What, if any, are the downsides of using all 6 anchor points with the combined WC+reinforcement? Similarly, why go with the RSR over the other combo? The car is only a street car when it drives to and from the track. I know many members like TC Designs, but unless someone has one just sitting in their garage ready to ship, I don't see this as a doable solution for me.

    Thanks for the help.
    Old 06-25-2011 | 08:35 PM
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    1b. Upon sensation it's going to snap -clutch and brake depressed with steering wheel straight results in less dramatic spin ie 180 degree fishtail : ). Mike
    Old 06-25-2011 | 08:42 PM
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    Is there a reason not using das? Pretty easy bolt-in and bar is very robust ie thick. Mike
    Old 06-25-2011 | 08:59 PM
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    I would be really interested to see some clear images of how you bolted your seats directly to your floor.

    Did it help you ? I looked at the option of lowering the seat within the sliders (drill some extra holes) but i see not even 1 inch of extra room.

    Might do the same. I also struggle with my length (6"1) trying to heal-toe without bumping against the steering wheel.
    Already took my bottom seat padding out, and removed the floor carpet and are also still looking for a good hub.
    Old 06-25-2011 | 09:26 PM
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    Originally Posted by Q&A
    I would be really interested to see some clear images of how you bolted your seats directly to your floor.

    Did it help you ? I looked at the option of lowering the seat within the sliders (drill some extra holes) but i see not even 1 inch of extra room.

    Might do the same. I also struggle with my length (6"1) trying to heal-toe without bumping against the steering wheel.
    Already took my bottom seat padding out, and removed the floor carpet and are also still looking for a good hub.
    Can't help with images as the car is getting 1b. fixed. Fortunately the car's PO was also tall and I inherited his setup. But this is what I think he used: http://www.bkauto.com/porsche/r9080.php. I keep the bottom seat padding in because I'm a little too wide to fit comfortably between the seat bolsters without it. I'm also looking out for a hub. The BK mounts definitely help. The console-delete also helps significantly. No height issues, even with helmet, and no leg room issues. I would like to bring the wheel a little closer but I've got a decent wing-span. The only downside maybe, is that shorter drivers can't drive my car (local shops probably hate it)... Short instructors can't just hop in and "show me"

    Mike -- regarding the DAS, I don't have a great reason. When I got the car a couple years ago I did lots of searching here and what I remember most was GMG mentioning tall-friendly features. Then after getting a new diff, new tires, suspension corner-balanced, RS wing, etc, the bank account decided to run the BK harness bar that came with the car. Didn't really think about it again until recently... If a used DAS bar comes up I wouldn't turn my nose up at it.

    Last edited by jberb55; 06-26-2011 at 01:33 PM.
    Old 06-25-2011 | 09:42 PM
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    i am using a DAS bar and couldn't be happier. it lets me slide my gt3 seats all the way back.
    Old 06-26-2011 | 02:20 AM
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    I'm 6'4" and was a little nervous about doing the rollbar/seat thing, as not many people/shops have "examples" to demo before buying. The car had the Euro GT3 seats already installed with sliders and I did not have sufficient head-room for a helmet.
    I bought the BK lowering mounts that attach to the sliders - I still wanted to have the sliders so my wife could drive the car if she wanted and I have a different seating position for street driving (what little I do drive on the street) than on track. I figured if it still didn't work I could just fab a plate for the floor and bolt the mounts to that. The mounts workd well, gave me the necessary drop (even better with the cushion removed) and some very much needed recline - I find that I don't need to put the wheel closer to me.

    For the rollbar, I made several calls and searched and searched. Availability, cost, and design features led me to the RSS 930 bar. It mounts to the seatbelt attachment points on the B-pillar at the strut-tops and has the harnesses attach behind the seat. Funny, I find that I don't really change the location of the seat, so I didn't need the slider, as the one position it's in is good for both environments...and my wife is afraid to drive the car, so no need for that. With the seat in a far-back position, I've still a few inches of rearward travel before the bar comes into play...there is ample room, for me, with this bar. The harness angle with the Euro seats and BK mounts also have a proper angle of the harness, which was another concern for me.

    All in, I'd do it again if I had to. I'm sure the GMG bar is top notch, too.

    Good luck with it,
    TomK
    Old 06-26-2011 | 01:56 PM
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    TomK, thanks for pointing out the RSS option, I was unaware of those. They look nice, designed/built in-house, and reasonable cost. Since the 930 bar doesn't appear to be different for sunroof or non-sunroof cars, can you tell me if there's a gap between the top of your bar and the headliner? When ordering the GMG bar, they ask to specify with or without sunroof, so I assume GMG's non-sunroof option may give a little more room. Even if there is, $1K for 1" (or less) is pretty expensive.
    Old 06-26-2011 | 02:00 PM
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    ^ get the non sunroof it's closer or at headliner ie more distance between the top of head and roof incase of rollover. Mike
    Old 06-26-2011 | 03:16 PM
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    Originally Posted by 996FLT6
    ^ get the non sunroof it's closer or at headliner ie more distance between the top of head and roof incase of rollover. Mike
    Absolutely, if that option is there. GMG and DAS both look to have two versions of their bars, but RSS appears to only have one bar. Love the new avatar.
    Old 06-26-2011 | 03:43 PM
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    Since seeing 24chromium/crazy Canuck and mr moderator 911 slow avatars- WAR IS ON : )!!!!!. You should email rss if that one size fits all is possibly just meant for non sunroof cars. 997.1 gt3 is the only one with sunroof unless it's designed for all modern 911's. Mike
    Old 06-26-2011 | 08:34 PM
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    Just measured from the back of the bar to the headliner- 2" from the headliner. The bar sits behind the b-pillar, so unless your head detaches from your body, it should never hit it.
    The other thing I liked about the RSS is that the "bolt-on" part is right at the strut-towers, not by the main hoop joints...fwiw.

    Any of the bars mentioned are all good choices, not a bad one amongst them.

    Good luck,
    TomK
    Old 06-26-2011 | 09:40 PM
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    Originally Posted by 996FLT6
    Since seeing 24chromium/crazy Canuck and mr moderator 911 slow avatars- WAR IS ON : )!!!!!.

    yes, your new stripper is distracting me. this one needs alot of work.

    the monroe tattoo is devaluing.




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