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 > Jake Braking A 5er Down Long Steep Incline

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ReneeG

Meridian, Idaho

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Posted: 11/23/21 06:57am Link  |  Quote  |  Print  |  Notify Moderator

With the TV in our signature, we never tow using cruise control, preferring to manually be in control when driving (if that makes sense), but always have Tow Mode on. Going down hills when tapping the brake, the trailer brakes are automatically engaged as well. We only use the manual trailer brake control for extra assurance or a little help as needed, which is rarely. Remember in the Mountain West Directory, in the introduction, the author states, "You can go down a mountain a thousand times too slowly, but only once too fast."


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Fulltimer50

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Posted: 11/23/21 07:53am Link  |  Quote  |  Print  |  Notify Moderator

18 wheelers dont seem to have a problem.


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cummins2014

Utah

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Posted: 11/23/21 07:53am Link  |  Quote  |  Print  |  Notify Moderator

ReneeG wrote:

With the TV in our signature, we never tow using cruise control, preferring to manually be in control when driving (if that makes sense), but always have Tow Mode on. Going down hills when tapping the brake, the trailer brakes are automatically engaged as well. We only use the manual trailer brake control for extra assurance or a little help as needed, which is rarely. Remember in the Mountain West Directory, in the introduction, the author states, "You can go down a mountain a thousand times too slowly, but only once too fast."



I've found with my 2014 Ram cruise on ,and usually set 5 mph lower then I want to descend a mountain grade, It will gain that 5 mph then maintain the desired speed . I have yet to go down a grade here in the mountain west that it didn't maintain the set MPH that I wanted without any further input from me.

The problem for me with just letting off the pedal ,and letting it slow going down a grade is that it slows too much, then back on the pedal , repeating this several times . Now hearing this explanation for auto I may give that a try , like one said he had the feature ,but didn't know how it worked . This was from a ford owner ,so a Ram truck may be different .

Cummins12V98

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Posted: 11/23/21 08:08am Link  |  Quote  |  Print  |  Notify Moderator

Auto mode is useless unless you are towing a lighter RV and smaller grades at least with RAM trucks.

I also set my cruise control at a lower speed to maintain the actual speed I want. It varies depending on how steep the grade is. I also on steep grades select the gear that puts me up near the redline for best braking.

I am glad I don't have the ability for the truck to apply my trailer brakes. I like controlling me descent with cruise and proper gear selection for the grade. I never use Auto mode, I have tried but found it useless for my large load.


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Retired JSO

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Posted: 11/23/21 12:34pm Link  |  Quote  |  Print  |  Notify Moderator

I tow in tow mode and use cruise control all the time with the exhaust brake engaged. The OP has a 2019 F-350, I have a 2018 F-350, my exhaust brake has no auto, it’s either on or off.





ReneeG

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Posted: 11/23/21 01:10pm Link  |  Quote  |  Print  |  Notify Moderator

Retired JSO wrote:

I tow in tow mode and use cruise control all the time with the exhaust brake engaged. The OP has a 2019 F-350, I have a 2018 F-350, my exhaust brake has no auto, it’s either on or off.


We have a 2011 F350 and the true engine compression brake (not exhaust) is only off or on with setting the Tow Haul Mode.

Cummins12V98

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Posted: 11/23/21 01:17pm Link  |  Quote  |  Print  |  Notify Moderator

"We have a 2011 F350 and the true engine compression brake"

Please explain.

JKJavelin

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Posted: 11/23/21 02:31pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12v98, I believe this how the Ram engine brake works:
Full mode, just letting off the accelerator will activate the engine brake.
Auto mode, you must tap the brake pedal to activate the engine brake.
I prefer the Auto mode to prevent it slowing down all the time, so I am able to coast. My trailer weighs near 12k lbs.
JK


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time2roll

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Posted: 11/23/21 03:15pm Link  |  Quote  |  Print  |  Notify Moderator

If the trailer is pushing the truck sideways in a curve hard enough to jack-knife using the Jake.... you are going too fast for the conditions.


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KD4UPL

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Posted: 11/23/21 04:35pm Link  |  Quote  |  Print  |  Notify Moderator

When I drove 18 wheelers with jake brakes I never applied the trailer brakes going down hill. It never even occurred to me. You're thinking too hard about this.

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