Choosing a gear for down hill

Discussion in 'Questions From New Drivers' started by Calregon, Mar 28, 2014.

  1. Working Class Patriot

    Working Class Patriot Road Train Member

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    Toss out the anchor to stop you...

    [​IMG]
     
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  3. MNoutkast

    MNoutkast Medium Load Member

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    I sense sarcasm but if not..... You start out in an even lower gear. A 7℅ grade with no Jake could be a low range decent. I can't think of the name of the hill dropping into SLC from the east but I had a Prostar with no Jake had to go down at about 15 mph for the first 3 miles in 4th gear on a 13 speed. Slow and brakes were still warm at the bottom but not fading or smoking. Could have done it faster in a higher gear with some stab braking but no regrets.
     
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  4. Moving Forward

    Moving Forward Heavy Load Member

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    I'm curious how many folks use their jake brake on snowy roads? I was told in school to NEVER use the jake when there's snow on the road. What do you do?
     
  5. x#1

    x#1 Road Train Member

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    yes there was a bit of sarcasm but I do appreciate the reply. I ran coast to coast for 3+ years without an engine brake.wow.that's fine as it instilled downhill control rather quickly as there is no substitute for experience and the only experience that i have was self taught. no schools,no trainers,no idea.yeah i probably do have some frowned upon driving habits.oh well.

    your reply is certainly the read,heed,and proceed type and the newbies will benefit from it.thanks-
     
  6. x#1

    x#1 Road Train Member

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    I wait for ice and then bobtail for the rush.
     
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  7. Lepton1

    Lepton1 Road Train Member

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    I've used the jake coming down Vail and Eisenhower in snowy/icy conditions. Never on high setting and preferably on low setting, watching the trailer like a hawk, and always with the inter axle differential engaged. Any feeling that I'm about to lose traction and the jake is disengaged and allow a fraction of a second of coast to not get squirrely and then start with light brakes and reengage jakes on LOW setting after getting rpm's in the 1200-1300 range. Definitely have to pay attention and have all 6 senses going full bore.
     
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  8. Working Class Patriot

    Working Class Patriot Road Train Member

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    Use it......You have to be smarter than things you work with....

    And btw....I'm sure the CDL Mills tell the students that Trolley Brakes are only to be used when checking to ensure the jaws on the fifth-wheel are locked.....


    Ask anyone who has had a "wandering" wagon and used that brake to straighten out...
     
    Moving Forward Thanks this.
  9. MACK E-6

    MACK E-6 Moderator Staff Member

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    If you survive you sure won't do it again. It's always better to be in a lower gear than you think may be necessary.

    I haven't been in a truck with an engine brake in years, so I have to do it old school, with is pretty much close to the "one gear below what you use to climb the hill" standard. I downshift before starting the descent, and aim for a gear that will require no more than a 2 or second use of the service brakes at a time. Ideally that should be enough to slow the truck by 5 mph. I run the flashers on the downgrade if I'm heavy.

    That's always worked well for me.
     
  10. MACK E-6

    MACK E-6 Moderator Staff Member

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    No sir. I believe what he means is simply that a truck with a lighter load can make a descent safely in a higher gear, thus faster. While a guy with a heavy load would have to drop three or four gears to accomplish the same result.

    I can understand the "super trucker" comment because I've been asked myself over the CB in some fairly unfriendly terms how it is that I'm going slow on a downgrade. Apparently some of the aforementioned "super truckers" can't see beyond their corner of the world.
     
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  11. Working Class Patriot

    Working Class Patriot Road Train Member

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    Naw...They just have "Better Jakes and Brakes" than the rest of us....
     
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