Ram takes the lead.
LINK New Cummins 6.7-liter calibration adds 15 lb.-ft. of torque, edging out even Class 4 pickup competitors to a best-in-class 865 lb.-ft. 2015 Ram 3500 crushes the competition with up to 30,000 ...
Forum Discussion
hone eagle wrote:Terryallan wrote:Bamaman1 wrote:
You're not going to catch me in a light duty truck with a 30K trailer behind me with friction style brakes. You're talking an area that requires a medium size truck with air brakes--
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UH. Maybe you want to re phrase that. The air activates the FRICTION brakes to stop a vehicle.
Still off a bit ,air keeps the brake shoes away from the drums.
Spring activated- air released.
This really has nothing to do with this thread but I hate that incorrect info is being put out especially by someone that should know because they drive a "big rig". The parking brake is spring applied on an air brake system and it does take air to release but it also takes air pressure to apply the brakes. If the system drops below 60 psi then the parking brake valve will pop which dumps the air pressure in the spring applied side of the system cause the brakes to lock. The spring applied part of the system is only the parking brake system.
So, like was said, they are friction brakes just like what's on a light duty truck.:W
