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Thread: WTB: FIA Rollbar

  1. #21
    Join Date
    Oct 2006
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    Cincinnati
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    Interesting Croc. I have to say I am not impressed with the Caterham cage. It hugs the contours of the car so there is no "crush" zone. My Caterham's custom cage sticks out 6-8" on the driver's side so, if hit and deformed, it still stays out of the narrow driver's seat.

    The Caterham cage is better than no cage (where, basically, your left elbow is the barrier to intrusion), and I am sure is decent in a roll over or, "climb over" (where another car lands on top of your car), but still, the driver's left arm is at risk, even with arm restraints.

    I think the odds of something catastrophic happening at a track day are very minimal, given the point-by rules and policy against aggressive driving. I'd be much more concerned in competition.
    Kitcat:AKA, Sir Spinsalot
    '97 Caterham Super Sprint, 1700 Crossflow-sold
    '09 Birkin S3, Duratec-sold
    '03 Caterham Zetec track car
    '19 Honda Type R, sold
    '19 Miata Clubsport

  2. #22
    Join Date
    Apr 2016
    Location
    Cary, NC
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    40

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    Quote Originally Posted by Kitcat View Post
    Lotsats: I don't think so. Based on my ever worsening "memory": the Caterham FIA bar weighs 31 lbs, the standard bar weighs 11 lbs. I weighed both on my bathroom scale many years ago. So, it is much stouter than the stock bar. An occasion where adding lightness is not a good thing. A knowledgeable Caterham pro once analogized the protection provided by the stock bar to being similar to that afforded by a Kleenex box....

    This was for a '97 Caterham, so its very possible that the current "stock" roll-over bar is far superior to the flimsy unit offered in '97?
    So—————-in 1969, I bought a used Formula Vee and went SCCA racing. After my first driver school, I removed the rollbar to add a taller one with better reinforcements. Upon inspection, the old bar was made out of electrical conduit. I don’t thank that even Colin Chapman would have done something that reckless during his quest for lightness.
    Joel Hoffman

  3. #23
    Join Date
    Jul 2013
    Posts
    500

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    BWTM. One year at the Carrera Panamericana, a beautiful (German team) 300SL roadster showed up with just a single driver side roll bar. Tech rejected it and informed them that they needed a 6 point cage. They went to a muffler shop and had one fabbed of exhaust pipe. Their further disregard for sanity was shown on a top speed stage where the navigator unstrapped so he could get completely out of the wind stream (small aero screens).

    PS Back in the day, there are countless photos of Jim Clark et al with helmets higher than the roll bar.

  4. #24
    Join Date
    Jul 2007
    Location
    Parker, CO
    Posts
    19

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    Quote Originally Posted by Croc View Post
    Sadly no. A driving instructor described it as the metal equivalent of a cardboard tube in a chat earlier this year. So clearly no improvement over 1997.


    Also interesting to note, that the original options included an FIA bar. Looking at a 2019 420R order form with option list today it is:
    - standard
    - "track day roll bar"
    - roll cage

    The FIA option no longer considers a roll bar adequate. You have to be in roll cage territory to get any FIA label.
    My understanding is that the "track day roll bar" plus the petty strut meets FIA requirements. The bar alone does not. I'm sure someone can confirm.
    Thomas Jordan
    2008 R400 Superlight

  5. #25
    Join Date
    May 2010
    Location
    Laurel MD
    Posts
    199

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    I was not going to post until the roll bar was powder coated and finally installed but as a roll bar post was started. Dan Lipperini of www.racelabz.com user name w650gb500, did an amazing job on my custom cage, exactly what I was looking for.

    Checkout


    http://locostusa.com/forums/viewtopi...251842#p251842
    Attached Images Attached Images  
    Last edited by fastg; 12-07-2019 at 05:38 PM. Reason: Add picture

  6. #26
    Join Date
    May 2018
    Location
    Albany, NY
    Posts
    380

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    Quote Originally Posted by tajordan View Post
    I think you might be on to something here. I found some photos that may agree with that.

    Straight:
    Attachment 16222

    Sloping:
    Attachment 16223
    Yep.

    Even your top one appears a bit more sloped that what I've seen

    Here is my old one vs random

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    2001 Caterham Superlight R

  7. #27
    Join Date
    Feb 2009
    Location
    NYC
    Posts
    5,139

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    Is it an S3 vs SV chassis difference?
    Mike
    2010 Caterham CSR with Cosworth 2.3 Duratec
    2018 Caterham 420R with 2L Duratec 210hp at Donington UK
    1975 BMW CSL Group 4 (restoration finished - track set up time)
    1977 Holden Torana "A9X" (awaiting restoration)
    1985 Holden Commodore SS Group A (suspension restoration)
    1985 Holden Commodore Group A (suspension set up)
    1982 Ferrari 400i (radiator replacement)
    1965 Ford Mustang Fastback "Holman Moody"
    1992 Ford Escort RS Cosworth WRC (dyno time)
    1990 Range Rover 2 door Classic
    and another project car coming....

  8. #28
    Join Date
    Oct 2006
    Location
    Cincinnati
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    3,767

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    Here is a shot of my custom flared-out roll cage. As you can see, it allows for some crush space before a driver compartment intrusion can occur. Seem like all se7en cages should be designed this way?
    Attached Images Attached Images  
    Kitcat:AKA, Sir Spinsalot
    '97 Caterham Super Sprint, 1700 Crossflow-sold
    '09 Birkin S3, Duratec-sold
    '03 Caterham Zetec track car
    '19 Honda Type R, sold
    '19 Miata Clubsport

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