Go Back   Lateral-g Forums > Technical Discussions > Safety Equipment
User Name

Thread Tools Display Modes
Old 12-02-2016, 11:05 AM
Doug1's Avatar
Doug1 Doug1 is offline
Senior Member
Join Date: Sep 2009
Posts: 266
Thanks: 1
Thanked 10 Times in 3 Posts
Default Need some street safety advice

I need to know how to determine if this roll bar is going to be too close to the driver's and passenger's head. The seats will be here next week and are Corbeaus with a harness.

My primary concern is the danger of someone hitting their head on the cross bar running down underneath the t-top since it is non removable, while the car is street driven and no helmet is being used. I'll have removable side bars for auto-crossing and will have a helmet on when those are in. The center bars are my primary concern. Do they stay or do I take them and the front hoop out?

I've included some photos below to help understand what I am concerned about. Is there a measurement or other point of reference that one can use to determine how far away from the driver's head these bars need to be? Again, the seats will require a 4 or 5 point harness so the occupants should be somewhat secure. There will be no back seat of course.

Reply With Quote
Old 12-02-2016, 11:42 AM
Ron Sutton's Avatar
Ron Sutton Ron Sutton is offline
Senior Member
Join Date: May 2013
Location: Folsom, CA
Posts: 2,422
Thanks: 45
Thanked 35 Times in 26 Posts

IMHO, the center bars will be too close to your head, as well as the passenger's head. Without a helmet, that is a head injury or death just waiting for the right circumstances to occur.

If, you & your passenger always wear full 5/6 point harnesses ... tight ... you need any roll bar tubes to be a minimum of 6" away without a helmet. The exceptions to this would be:
* Where the headrest prevents your head from going back towards the main hoop
* If the seat was a full containment race seat, designed to limit side to side head movement.

Best wishes, Ron

Ron Sutton Race Technology
Reply With Quote
Old 12-02-2016, 12:04 PM
dontlifttoshift's Avatar
dontlifttoshift dontlifttoshift is offline
Senior Member
Join Date: Oct 2012
Location: Beach Park. IL
Posts: 828
Thanks: 2
Thanked 52 Times in 35 Posts

When you say side bars, are you talking about door bars or is there a removable bar tying the corners of the main hoop to the a pillar bar?

Is this just an autocross car or is there serious track time in the future?

Support your local hot rod shop!
Reply With Quote
Old 12-02-2016, 12:24 PM
Vegas69's Avatar
Vegas69 Vegas69 is offline
Senior Member
Join Date: Dec 2006
Posts: 8,539
Thanks: 44
Thanked 98 Times in 59 Posts

That looks extremely dangerous for a street car. Pick which is more important. Race car or street car? Like most things in life, you can't have it all!
Reply With Quote
Old 12-02-2016, 01:46 PM
XLexusTech XLexusTech is offline
Senior Member
Join Date: Jun 2007
Posts: 1,222
Thanks: 54
Thanked 60 Times in 34 Posts

i cant really see the clearance but it looks similar to mine...

Shoulder harness 5 point... for everyone..is a must have... other than that.. not much more you can do it you desire/need a cage..

Padding wont hurt.. pardon the pun..
My Project Double Tap thread
My project webpage http://projectdoubletap.com/
Reply With Quote
Old 12-02-2016, 06:59 PM
Doug1's Avatar
Doug1 Doug1 is offline
Senior Member
Join Date: Sep 2009
Posts: 266
Thanks: 1
Thanked 10 Times in 3 Posts

Thanks guys. Ron, I was hoping for your input. I'll put a tape measure to it this weekend using stock seats. The Corbeaus are LG1s and so they are not full containment.

The front hoop and connecting bars seemed like a great idea until I saw it after the fact. I want safety to be the primary factor and the car will not face serious track time. I wanted to build something that would be along the lines of the Optima Challenge cars. The fact of the matter is that the front hoop is going to cause me to spend thousands of dollars on a hand built dash because I can't get a stock one back in there. So there is sort of a silver lining to this cloud if I do need to take this out.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 02:30 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright Lateral-g.net