Quote:
Originally Posted by p38fln
OK, I searched NHTSA and found their research - they are saying discs stop faster in their testing. They used real trucks and real drivers to do the testing, no computer simulations. A total of 108 drivers were used. I got tired of reading and just copied the important details -
*Edit - read further into it - The stopping distance from full panic stop numbers are from a real truck, the 108 drivers were to test reaction time using a simulator
Anyway, i was completely wrong about the numbers- they aren't cutting in half from 600 to 300 feet, more like 30%.
Full panic stop from 60 MPH -
Regular S-Cam and drum - 317 feet
Enhanced S-Cam and drum - 252 feet
Air disc - 222 feet
http://www.nhtsa.gov/DOT/NHTSA/NVS/V...ons/811367.pdf
This document has the research on stopping distances - the previous one was just research on how drivers responded to better brakes
http://www.nhtsa.gov/DOT/NHTSA/NRD/M...OTHS809700.pdf |
all things being equal, disc brakes do not provide more stopping force than drum brakes.
Now, in rain, they may...and if doing several continuous stops and building up heat, then they are also at an advantage there.
but in the dry, they do not provide more friction than drums....