a 4pt roll BAR will do you absolutely no good. and is not acceptable (as a roll-cage, and or safety cage) at any track (circuit, or drag) or auto-x event. Ive been through all of the rules/regulations with the track officials regarding my harnesses. And ive found out plenty of info.
sigh
WRONG...
http://www.ioportracing.com/faq/rollbar.htm the only thing they are not legal (that i am even aware of) for is drag (when required by the track for x.xx or faster)
Please explain to me how a roll bar, mounted BEHIND me, is going to do any good if im on my roof sliding forward and i slam into something?
a roll bar will strengthen the car in a few places (besides making it more rigid in general) generally speeking a 4 point autopower bar with the cross bars would be good at helping side impact protection and roll over protection.. the harness bar will also hold the harness at the correct angle..
Its not. the a-pillars/windshield are going to cave in and smash my body/head between the metal/glass, and the rollbar. Thus, doing me no good. Where as a FULL 8 to 10 point roll cage will prevent that.
if you are talking about a 100mph head on collision.. lol then yeah probably..
A 4pt roll BAR is simply not an applicable safety device to be used on any sort of race track and chances are the safety officials wont even let you on the track. (Based off what ive seen here in Colorado) Also, if you have a full cage, you cannot have interior panels, the doors must be gutted out and the cage must extend into the door shell to protect from side impacts.
again you must make your statement more clear.. if you are talking about a 6 second drag car.. or a 200mph touring car.. then yeah.. i agree that a 4 point street bar is not enough.. lol
Every vehicle on the market is required to be able to hold its own weight sitting on its roof. Its a safety regulation throughout the united states.
again you give only PARTIAL information.. yes its required to hold its own weight.. yet every year people are hurt and killed in roll overs.. why? because the stanadard you speek of FMVSS 216 ONLY applies to the front pillars... so the roof COULD still collapse and cause injury or death.. plus you need to factor in the force of the accident itself..
"The only federal standard that addresses vehicle roof strength is
Federal Motor Vehicle Safety Standard FMVSS) 216. To pass this
standard a vehicle must resist an intruding plate with a load of 1.5
times the weight of the vehicle and is designed to offer protection to
occupants in rollovers. The conditions under which FMVSS 216 is
applied are significantly less stringent than those experienced in actual
rollover accidents. When vehicles are tested in a way that is consistent
with actual rollover accidents, they will often crush significantly under
loads that are 30 to 50% of the published FMVSS 216 peak loads. As
our series of inverted drop tests will show, many vehicles will crush
catastrophically when tested under these ‘real world’ conditions."
My OPINION (everything else in this post is fact) is if my car rolls, i have more problems to worry about then whats going to happen when it lands on its roof. Honestly. Im more worried about a semi taking me out with his/her trailer through rush hour traffic, or getting rear-ended. The chances of rolling a car where the center of gravity is literally within a foot of the ground is slim, and if you find a way to do it, you've got bigger things to worry about.
your opinion is noted
