Forum Discussion
Bionic_Man
Jan 26, 2020Explorer
Cummins12V98 wrote:
To have zero brake applications they need to be running at the speed they want to maintain then set cruise to say 5mph less but also lock the trans in the same gear you would have climbed that grade in. This will vary based on the grade and load. This takes a human to dial this in.
I easily maintained 30-35mph locked in 2nd gear on a several mile 14% grade at 33k combined simply by moving the cruise speed up or down with my thumb.
For the Cummins closer to 3k will give the best downhill braking.
Cool brakes along any big downhill grade = GOLDEN.
Does your truck have adaptive cruise control? Because if it does (and most of the new high trim trucks have it), the brakes will be applied automatically if you are using cruise.
I don't get the brake application part of the test. I guess they have to do something to measure, but it isn't unnerving to apply brakes going down a grade.
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