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Registered
Join Date: Aug 2000
Location: Deep in the bowels of UCLA hospital
Posts: 2,316
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fiberglass door vs safety
just been thinking...
if one installs a glass door is a full cage a requirement? I can't imagine a T-bone accident with a glass door. but then again the steel door desn't have much reinforcement either...but it is metal I've heard of guys installing fiberglass roofs, but that is on top of a cage no? also the new BMW CSi M3 has a cargbon fiber hood without a cage... am I missing something? MJ |
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10-03-2002, 05:40 PM
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Irrationally exuberant
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US doors have a reinforcement bar inside I believe.
-Chris |
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10-03-2002, 05:49 PM
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Navin Johnson
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,812
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ok.
I took my 65 lb (ea.) stock doors out, and replaced it with a 8 lbs glass door.... you will need more protection.. Im installing a glass roof too..... as low as possible to the cage to lower the Cf as well as Cg the doors in the early '70s got the reinforcments. I believe.... my '69 doors were heavy all on there own.
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Don't feed the trolls. Don't quote the trolls  http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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10-03-2002, 06:08 PM
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Registered
Join Date: Oct 2000
Location: Nor-Cal
Posts: 4,403
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If you run FG doors, you need a cage, with nascar style cross braces. Trust me, you don't want to be in a t-bone acident without them.
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10-03-2002, 07:36 PM
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PRO Motorsports
Join Date: Nov 2001
Location: Burbank, CA
Posts: 4,580
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Safety-Schmafety! Everyone knows that you want to be thrown-clear in an accident. Getting rid of those heavy seatbelts will save a few pounds too!
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'69 911E coupe' RSR clone-in-progress (retired 911-Spec racer) '72 911T Targa MFI 2.4E spec(Formerly "Scruffy") 2004 GT3 |
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10-03-2002, 08:23 PM
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Registered
Join Date: Apr 2002
Location: Santa Clara, CA
Posts: 5,668
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For the track, cage. For the street, they're not as safe as steel - but hey, some people ride motorcycles.
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Chuck Moreland - elephantracing.com - vonnen.com |
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10-03-2002, 09:19 PM
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Stay away from my Member
Join Date: Aug 1999
Location: Agoura, CA
Posts: 5,773
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Yep, it's all relative. The earliest cars didn't have any door beams and I'm not sure how many people suffered intrusion injuries/casualties due to this compared to the later, heavier US safety-beam doors.
I may at some point put fg or cf skins on my race car but it's got a welded 8pt cage with a high "X" door bar....stronger than any wimpy beam.
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Chris C. 1973 914 "R" (914-6) | track toy 2009 911 Turbo 6-speed (997.1TT) | street weapon 2021 Tesla Model 3 Performance | daily driver 2001 F150 Supercrew 4x4 | hauler |
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10-03-2002, 09:39 PM
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turbo dreaming
Join Date: Aug 2001
Location: Fujisawa, Japan
Posts: 544
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Yeah I'm pretty sure theres a beam inside normal doors. I wouldnt want to think of the possibility of the fg shattering and coming into the cabin in nice big shards either......
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10-03-2002, 10:08 PM
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Registered
Join Date: Aug 2000
Location: Deep in the bowels of UCLA hospital
Posts: 2,316
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confirming my suspicions...
so on the 911R with its fiberglass door...did it have a steel bar in it? or was it used only for high speed record setting so door bar was not an issue... what about the M3 CSL...CF roof, no cage...?? http://www.bmwnation.com/NEWS/010904_a.html MJ PS doesn't the lighter panels, thinner glass, better engine remind you of what porsche used to do to mak 911 models with RS and RSR designations...back when they used to make real sports cars... Last edited by 82SC; 10-03-2002 at 10:54 PM.. |
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10-03-2002, 10:51 PM
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Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
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MJ,
If you manage to get yourself T-boned by a 4000 lb to 6000 lb minivan or SUV ... a honeycombed Titanium door beam, or a chrome-moly cage won't help, so the FG vs stock door argument is pointless! If you wake up from the coma ... several weeks/months will be gone from your memory, and rehab will be your only concern for numerous months! Dale Ernhardt had a cage all around him ... and it all ended in milliseconds, when his chin hit the steering wheel! Active driver avoidance of collisions ... is the only way to survive in a 911! That means attemtion to the entire 360° vicinity around you at all times, thinking ahead, and being prepared to take evasive action from any threat! The handling and braking cabability of your 911 is the best defense you have.
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Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
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10-03-2002, 11:42 PM
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The Blue Pheonix
