Deleting Bumper support Questions...
Thread Starter
Registered User
Joined: Jan 2005
Posts: 2,592
From: N Falmouth MA
Deleting Bumper support Questions...
I'm completely hooked on weight reduction, as some may know.. I've taken about 300 lbs off the car so far.. I want to ditch my sub box next. I want this car to appear completely stock, but retain some creature comforts.
I have to fix my front end as my winter project, I was thinking about deleting my bumper supports..
How much does this effect the impact absorption of the front and rear? I'd imagine a lot. Slow speed would crunch the bumper pretty good, but what about a higher speed crash? More frame/sub frame damage?
I have to fix my front end as my winter project, I was thinking about deleting my bumper supports..
How much does this effect the impact absorption of the front and rear? I'd imagine a lot. Slow speed would crunch the bumper pretty good, but what about a higher speed crash? More frame/sub frame damage?
Registered User
Joined: Jun 2003
Posts: 320
From: Kentucky
I lost both of my bumper supports, But Its pretty much a track car these days. My biggest thing on the front, If you hit a tree head on, Running say 55 or so, The only think that keeps the engine from coming back n the car with you is the K member, But Id ditch it anyways.
Administrator
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
The function of the crash pad is to limit vehicle body damage in very low speed crashes, not protect occupants.
http://www.nhtsa.dot.gov/cars/proble...per/Index.html
http://www.nhtsa.dot.gov/cars/proble...per/Index.html
2) What is the purpose of bumpers?
The car bumper is designed to prevent or reduce physical damage to the front and rear ends of passenger motor vehicles in low-speed collisions. Automobile bumpers are not typically designed to be structural components that would significantly contribute to vehicle crashworthiness or occupant protection during front or rear collisions. It is not a safety feature intended to prevent or mitigate injury severity to occupants in the passenger cars. Bumpers are designed to protect the hood, trunk, grille, fuel, exhaust and cooling system as well as safety related equipment such as parking lights, headlamps and taillights in low speed collisions.
3) What are the Federal regulations for bumpers?
49 CFR Part 581, "The bumper standard," prescribes performance requirements for passenger cars in low-speed front and rear collisions. It applies to front and rear bumpers on passenger cars to prevent the damage to the car body and safety related equipment at barrier impact speeds of 2½ mph across the full width and 1½ mph on the corners.
This is equivalent to a 5 mph crash into a parked vehicle of the same weight. The standard requires protection in the region 16 to 20 inches above the road surface, and the manufacturer can provide the protection by any means it wants. For example, some vehicles do not have a solid bumper across the vehicle, but meet the standard by strategically placed bumper guards and corner guards.
The car bumper is designed to prevent or reduce physical damage to the front and rear ends of passenger motor vehicles in low-speed collisions. Automobile bumpers are not typically designed to be structural components that would significantly contribute to vehicle crashworthiness or occupant protection during front or rear collisions. It is not a safety feature intended to prevent or mitigate injury severity to occupants in the passenger cars. Bumpers are designed to protect the hood, trunk, grille, fuel, exhaust and cooling system as well as safety related equipment such as parking lights, headlamps and taillights in low speed collisions.
3) What are the Federal regulations for bumpers?
49 CFR Part 581, "The bumper standard," prescribes performance requirements for passenger cars in low-speed front and rear collisions. It applies to front and rear bumpers on passenger cars to prevent the damage to the car body and safety related equipment at barrier impact speeds of 2½ mph across the full width and 1½ mph on the corners.
This is equivalent to a 5 mph crash into a parked vehicle of the same weight. The standard requires protection in the region 16 to 20 inches above the road surface, and the manufacturer can provide the protection by any means it wants. For example, some vehicles do not have a solid bumper across the vehicle, but meet the standard by strategically placed bumper guards and corner guards.
Registered User
Joined: Oct 2003
Posts: 2,140
From: DOVER DE
If removed you would suffer a lot more damage in a low speed accident and total oblitteration in a higher speed accident. Front and rear supports together weigh maybe 25lbs. not worth it in my mind unless it a track only car.
Re'
Re'
Registered User
Joined: Feb 2007
Posts: 1,097
From: smithtown, NY
i took off my front bumper with the theory of if i crash up the front of my car... it will probably by my fault, and seeing as how i drive my camaro super carefully i dont see an accident in my future. the rear however can get plowed at anytime and i might not be at fault in anyway. i left it in for that reason. plus that weight is past the back wheels anyway so what you loose in weight you almost make up in traction, so id say leave the back on.
btw i probaly drive my car 5000 miles a year of mixed driving.
btw i probaly drive my car 5000 miles a year of mixed driving.
Thread Starter
Registered User
Joined: Jan 2005
Posts: 2,592
From: N Falmouth MA
Administrator
Joined: Nov 1998
Posts: 71,098
From: Hell was full so they sent me to NJ
No NOT the support brackets for the bumper itself... there aren't any - that's why the bumper sags after you remove the crash cushion, and that's why there is an aftermarket support bracket available (or you can make one). There is a metal channel that is part of the front crash cushion, and bolts it to brackets on the horns of the subframes. Might want to look at the assembly diagrams if you aren't familair with what you are asking about.
Anyone have pics of front bumper sag?