|
Woodn was referring to the vehicle weight, I believe.
PFs are the initials for Performance Friction.
Having ABS I would not worry about locking up too early, although when we used to run LA tests it was always interesting on a rain day with the road oil. I'd rather be driving in snow.
If you use ABS to it's full extent you can get better stopping distance; only a pro test driver can do better.
Controlling a tire to an incipient skid point, the maximum deceleration point, is an acquired skill. The problem with that is you may not be stopping as short as you possibly can. Just because the front or rear tires are at incipient skid doesn't mean the opposite axle tires are at their maximum deceleration capacity. So the trick is to learn to push harder and let the ABS control the skid at all the wheels.
If a vehicle is perfectly balanced, then a trained driver can usually beat ABS in stopping distance, but if a vehicle, especially a pickup, was perfectly brake balanced at light weight it would not be at full weight GVW. And the same the other way around. Even with the dynamic brake proportioning that we have.
__________________
Jack
Former Vehicle Test Manager - Friction Products
03 F350SC 4x4 6.0 Auto 5/30/03
Truck Modifications below in Pictorials on Facebook. Search in Google - Facebook TooManyToys
Step Lights;Painted Flanges; Bypass Oil Filter; Heated Mirror Switch; Reverse Lights; 7.3L Fuel Reg Shim; 6 Disc Radio Speed Volume Mod; Coolant Filter, etc.
|
