Need Rear Bumper hydraulic specs data details info.
07-22-2011, 11:58 AM
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Need Rear Bumper hydraulic specs data details info.
Does anyone have or can anyone direct me to the detailed impact specifications and or data for the rear bumper hydraulic units? I am specifically interested in the compression load needed to make them collapse inward. Data detailing weight and speed to cause compression would be valuable to an accident appeal case I am fighting. The accident took place a few years ago but the fight in court is on.
Thank you if you can help.
Allen
Thank you if you can help.
Allen
07-22-2011, 12:28 PM
#2
Team Owner
from a google search of
impact bumper shock specifications
DOT's Bumper Regulations
By Tamra Spurlock, eHow Contributor
updated September 03, 2010
Print this article
Bumpers limit damage from low-speed collisions.
Bumpers are shields of plastic, rubber or metal mounted to the front and rear of most vehicles. They use energy absorbers, specially designed brackets or cushioning materials to absorb the shock of a low-speed collision. The National Highway Traffic Safety Administration, NHTSA, a branch of the Department of Transportation, issues Federal Motor Vehicle Safety Standards and Regulations establishing minimum safety performance requirements for all passenger cars bumpers.
Application
49 CFR Part 581, the Department of Transportation's bumper standard, defines performance requirements for passenger cars only. The primary intent of the standard is to reduce physical damage from low-impact collisions, not to reduce passenger injury. Bumper regulations are designed to protect cooling, fuel or exhaust system components as well as safety-related components such as parking lights, headlights and taillights. Pickup trucks, minivans and sport utility vehicles are not covered by the standard because of the potential impact to commercial or off-road performance.
Speed Requirement
The bumper standard sets speed requirements for front and rear car bumpers. Requirements have changed four times since the standard was first issued in 1971; they vary according to a car's model year. From 1972 until 1978, the standard required no collision damage to headlamps and fuel systems at 5 mph for front bumpers and 2.5 mph for rear bumpers. For 1979, the Phase I standard prohibited any damage to safety-related parts and exterior vehicle surfaces at 5 mph, but did not limit damage to the bumper system. Cars bumpers manufactured between 1980 and 1982 had to withstand a 5-mph impact with no safety system damage and no damage to the bumper exceeding a 3/8-inch dent and no more than 3/4-inch displacement, a requirement referred to as Phase II. Starting in 1983, impact speeds were lowered to 2.5 mph for front and rear collisions and 1.5 mph for corner impacts, and Phase I damage criteria was reinstated.
Height Requirement
The DOT's bumper standard requires impact protection in the region 16 to 20 inches above the driving surface. This requirement applies to passenger cars only. Pickup trucks, SUVs and minivans are not covered because their bumper height varies depending on the clearance they need to operate appropriately.
Means of Protection
Manufacturers can provide the required impact protection by any means they chose. They self-certify their bumpers in order to meet the standard. The DOT does not require manufacturers to disclose bumper performance data on new car stickers; most list this information voluntarily.
References
U.S. Department of Transportation: Federal Motor Vehicle Safety Standards and Regulations
Bumper Safety: Understanding Car Bumpers
NHTSA Report Number DOT HS 807 072: An Evaluation of the Bumper Standard
Resources
NHTSA: Bumper Questions and Answers
Photo Credit dinosaurs image by Scott Williams from Fotolia.com;
Read Next: Federal DOT Regulations for a Semi-Trailer Bumper
Print this article
Comments
Related Ads
Related Articles & Videos
Federal DOT Regulations for a Semi-Trailer Bumper
DOT Laws for Gooseneck Trailers
Bumper Pool Directions
How to Measure Size When Making Bumper Pads
DOT Cigarette Smoking Regulations
Auto Bumper Law
Helpful?
Yes
No
Read more: DOT's Bumper Regulations | eHow.com http://www.ehow.com/list_6911306_dot...#ixzz1SqejtoFY
impact bumper shock specifications
DOT's Bumper Regulations
By Tamra Spurlock, eHow Contributor
updated September 03, 2010
Print this article
Bumpers limit damage from low-speed collisions.
Bumpers are shields of plastic, rubber or metal mounted to the front and rear of most vehicles. They use energy absorbers, specially designed brackets or cushioning materials to absorb the shock of a low-speed collision. The National Highway Traffic Safety Administration, NHTSA, a branch of the Department of Transportation, issues Federal Motor Vehicle Safety Standards and Regulations establishing minimum safety performance requirements for all passenger cars bumpers.
Application
49 CFR Part 581, the Department of Transportation's bumper standard, defines performance requirements for passenger cars only. The primary intent of the standard is to reduce physical damage from low-impact collisions, not to reduce passenger injury. Bumper regulations are designed to protect cooling, fuel or exhaust system components as well as safety-related components such as parking lights, headlights and taillights. Pickup trucks, minivans and sport utility vehicles are not covered by the standard because of the potential impact to commercial or off-road performance.
Speed Requirement
The bumper standard sets speed requirements for front and rear car bumpers. Requirements have changed four times since the standard was first issued in 1971; they vary according to a car's model year. From 1972 until 1978, the standard required no collision damage to headlamps and fuel systems at 5 mph for front bumpers and 2.5 mph for rear bumpers. For 1979, the Phase I standard prohibited any damage to safety-related parts and exterior vehicle surfaces at 5 mph, but did not limit damage to the bumper system. Cars bumpers manufactured between 1980 and 1982 had to withstand a 5-mph impact with no safety system damage and no damage to the bumper exceeding a 3/8-inch dent and no more than 3/4-inch displacement, a requirement referred to as Phase II. Starting in 1983, impact speeds were lowered to 2.5 mph for front and rear collisions and 1.5 mph for corner impacts, and Phase I damage criteria was reinstated.
Height Requirement
The DOT's bumper standard requires impact protection in the region 16 to 20 inches above the driving surface. This requirement applies to passenger cars only. Pickup trucks, SUVs and minivans are not covered because their bumper height varies depending on the clearance they need to operate appropriately.
Means of Protection
Manufacturers can provide the required impact protection by any means they chose. They self-certify their bumpers in order to meet the standard. The DOT does not require manufacturers to disclose bumper performance data on new car stickers; most list this information voluntarily.
References
U.S. Department of Transportation: Federal Motor Vehicle Safety Standards and Regulations
Bumper Safety: Understanding Car Bumpers
NHTSA Report Number DOT HS 807 072: An Evaluation of the Bumper Standard
Resources
NHTSA: Bumper Questions and Answers
Photo Credit dinosaurs image by Scott Williams from Fotolia.com;
Read Next: Federal DOT Regulations for a Semi-Trailer Bumper
Print this article
Comments
Related Ads
Related Articles & Videos
Federal DOT Regulations for a Semi-Trailer Bumper
DOT Laws for Gooseneck Trailers
Bumper Pool Directions
How to Measure Size When Making Bumper Pads
DOT Cigarette Smoking Regulations
Auto Bumper Law
Helpful?
Yes
No
Read more: DOT's Bumper Regulations | eHow.com http://www.ehow.com/list_6911306_dot...#ixzz1SqejtoFY
