Roll Bar Extension

Technical discussion, questions, answers and information
Jon Updegrove
Posts: 81
Joined: Thu Feb 07, 2013 9:01 am
Location: United States, Pennsylvania, Allentown

Roll Bar Extension

Postby Jon Updegrove » Wed Jan 15, 2014 7:52 am

Hello, I am looking to add a extension to my main hoop roll bar on my Red Devil F-mod car to make it more "taller driver friendly" (I'm 6'2" on a short day). Can anyone point me to a section in either the GCR or SOLO rules on the restrictions of it? The car is pre-1.375" main hoop design.

Thanks,
Jon
Willing to race anything with 4 wheels!

Jim Murphy
Posts: 2650
Joined: Fri Mar 16, 2007 2:13 pm
Location: United States, Georgia, Winder

Postby Jim Murphy » Thu Jan 16, 2014 1:28 pm

IF RR, then it must be continuous so you have to install a complete hoop from the base frame - this is what we have done several times over the years.
IF the car is to be used ONLY in Solo then there is a whole section in the Solo rulebook about this - it is a lot smaller in diameter. Personally, I don't like the Solo version of roll cage safety, I prefer the RR version.

HTH,
Jim

Jon Updegrove
Posts: 81
Joined: Thu Feb 07, 2013 9:01 am
Location: United States, Pennsylvania, Allentown

Postby Jon Updegrove » Thu Jan 16, 2014 1:37 pm

Hmm no exceptions even for solo cars or pre 1986 roll cage rules? What about a gusset attached extension? Seems like quite a bit of work just for a few inches :lol:

Thanks,
Jon
Willing to race anything with 4 wheels!

Jim Murphy
Posts: 2650
Joined: Fri Mar 16, 2007 2:13 pm
Location: United States, Georgia, Winder

Postby Jim Murphy » Thu Jan 16, 2014 1:48 pm

Jon Updegrove wrote:Hmm no exceptions even for solo cars or pre 1986 roll cage rules? What about a gusset attached extension? Seems like quite a bit of work just for a few inches :lol:

Thanks,
Jon


Nope. Safety is the prime directive here. It is very wise to be extremely familiar with all pertinent rules including roll bars and roll cages. Start reading and memorizing.
I am 6'3" and I did a 4" higher main roll hoop for my ex 1984 DareDevil F500 F Mod Solo car a long time ago. It still won two national championships with two different co-drivers.

Jim

Jon Updegrove
Posts: 81
Joined: Thu Feb 07, 2013 9:01 am
Location: United States, Pennsylvania, Allentown

Postby Jon Updegrove » Thu Jan 16, 2014 2:22 pm

True Jim, I guess my winter rebuild procrastination just went a little too long haha. As always, thanks for the knowledgeable answer.

Jon
Willing to race anything with 4 wheels!

Bill Schmidt
Posts: 1287
Joined: Sat Oct 13, 2007 1:17 pm
Location: United States, Kansas, Kansas City

Postby Bill Schmidt » Thu Jan 16, 2014 9:13 pm

Jon,
You do still have the option of using 1.25 or 1.375 tubing for your new main hoop. If your car is old like mine, it will never see road racing again and doesnt need the bigger tubing.
1988 Red Devil 494/4 link
1995 Trackmagic 125 shifter/ KX125
Kansas City

jtc161
Site Admin
Posts: 1347
Joined: Wed Jan 16, 2008 9:27 pm

Postby jtc161 » Fri Jan 17, 2014 1:46 am

Ours wasn't made as Jim describes (original or replacement), nor are several cars that come to mind. If anyone is looking at your car that closely tell em to beat it.

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New
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1997 RD
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Jon Updegrove
Posts: 81
Joined: Thu Feb 07, 2013 9:01 am
Location: United States, Pennsylvania, Allentown

Postby Jon Updegrove » Fri Jan 17, 2014 6:23 am

Wow that Iooked really good, I never would have noticed. Jeff did you bend that yourself? Or are bent?
Thanks,
Jon
Willing to race anything with 4 wheels!

Jim Murphy
Posts: 2650
Joined: Fri Mar 16, 2007 2:13 pm
Location: United States, Georgia, Winder

Postby Jim Murphy » Sun Jan 19, 2014 4:26 pm

KBS has always been simple in its roll bar structure when compared to the older Red Devils which had a nickname of "plumber's nightmare" back then.
So, yes, the main roll hoop started at the bottom frame in one continuous run.

Jim
Last edited by Jim Murphy on Wed Jan 22, 2014 4:06 pm, edited 1 time in total.

jtc161
Site Admin
Posts: 1347
Joined: Wed Jan 16, 2008 9:27 pm

Postby jtc161 » Sun Jan 19, 2014 4:29 pm

Jon Updegrove wrote:Wow that Iooked really good, I never would have noticed. Jeff did you bend that yourself? Or are bent?
Thanks,
Jon


A fabricator made those up based on a cad model and some measurements. The old one came to almost a point and was not legal. The new one allowed our helmet to go between the hoop and made things a little safer and more comfortable.
1997 RD

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