Questions on engine brake use.

Discussion in 'Questions From New Drivers' started by Woodys, Mar 16, 2018.

  1. Dave_in_AZ

    Dave_in_AZ Road Train Member

    Joined:
    May 4, 2015
    Messages:
    57,641
    Thanks Received:
    395,140
    0
    Something I will never understand is these guys that go FLYING down some of the long grades. I'd love to know where they got the guarantee that no one is crashed around the curve. Cause if you're heavy, and you're up around 60+, let alone 70+..................they are gonna pick you up with a stick and a spoon after the crash.
     
    Bean Jr. Thanks this.
  2. STexan

    STexan Road Train Member

    Joined:
    Oct 3, 2011
    Messages:
    14,963
    Thanks Received:
    29,155
    Location:
    Longview, TX
    0
    True, but I will admit these new Detroit 505's with the DT12 autos can spoil a driver in a hurry. I've been in this thing since last summer, all over the western US and can't remember the last time I had to use service brakes going down any grade other then to keep from running into the back of somebody. I don't blow down grades but I don't keep my brakes warm/hot either.

    Had a driver a few weeks ago on NB Grapevine tell my my brake lights weren't working. I was 79k and he passed me earlier on an upgrade and was obviously lighter, but I walked past him on the downhill side and he couldn't understand how I could hold 45 on the steepest parts, and not use brakes.

    Freightliner tells you they won't warn you of overspeed until you exceed 2,300 rpm for 5 seconds. They're not worried about them in the least on downgrades w/ max engine braking until you exceed 2,300. They run (brake) really well around 2,100-2,200
     
  3. STexan

    STexan Road Train Member

    Joined:
    Oct 3, 2011
    Messages:
    14,963
    Thanks Received:
    29,155
    Location:
    Longview, TX
    0
    It's an inside "joke". There are a lot of truckers out here with short penises who compensate by running straight pipes with no muffler and they think they sound cool and they will take any opportunity to let others hear them up close.

    It's not as bad as it used to be, but every now and then you'll still hear a loud one where you don't need to be hearing one at all, let alone a loud set.
     
    Last edited: Mar 16, 2018
  4. rulonwaholla

    rulonwaholla Light Load Member

    Joined:
    Nov 6, 2013
    Messages:
    258
    Thanks Received:
    177
    0
    dont you ever think switching gears when you going down the mountains. but you need too learn how too handel situations like what happens if the jakes stop working!!. now is another ball game.
     
    Woodys Thanks this.
  5. MACK E-6

    MACK E-6 Moderator Staff Member

    Joined:
    Sep 19, 2005
    Messages:
    49,227
    Thanks Received:
    230,090
    Location:
    Baltimore, MD
    0
    It’s even better when the degenerates in question do this in the middle of the night when the vast majority of the occupants of said truck stop are trying to sleep. :mad:
     
  6. STexan

    STexan Road Train Member

    Joined:
    Oct 3, 2011
    Messages:
    14,963
    Thanks Received:
    29,155
    Location:
    Longview, TX
    0
    I know it. Just a week or so ago somewhere out west, about 02:00 this dude was coming down the ramp to the truck stop that was adjacent to the ramp. Straight pipes, big engine .... all the way down to the stop sign, through every single gear, I don't think he skipped even one hole, down to maybe 3rd :biggrin_25523: You could have heard him on the other end of the town on that cold night.
     
  7. MACK E-6

    MACK E-6 Moderator Staff Member

    Joined:
    Sep 19, 2005
    Messages:
    49,227
    Thanks Received:
    230,090
    Location:
    Baltimore, MD
    0
    Riding your engine brake all the way down a 5 mile grade won’t hurt it anything at all.

    Wet or icy conditions, especially with no load on board, are a horse of a different color, but if you find that you’re descending the hill at a steady forward speed with your engine wound up and staying fairly constant without having to touch the service brakes, then you couldn’t have done it better.
     
    Lepton1 and Woodys Thank this.
  8. MACK E-6

    MACK E-6 Moderator Staff Member

    Joined:
    Sep 19, 2005
    Messages:
    49,227
    Thanks Received:
    230,090
    Location:
    Baltimore, MD
    0
    Let me guess. Bobtailing even.... :rolleyes:
     
  9. dunchues

    dunchues Medium Load Member

    Joined:
    Mar 23, 2012
    Messages:
    554
    Thanks Received:
    959
    Location:
    new brunswick
    0
    Never mind short, most of that type have no penises at all
     
    Kyle G. Thanks this.
  10. pmdriver

    pmdriver Road Train Member

    Joined:
    Nov 14, 2017
    Messages:
    2,338
    Thanks Received:
    3,503
    0
    Jakes are a great tool, they can hold you at a speed on a grade or they can be abused with hitting them strong on marginal traction surfaces, Some trans can be shifted quicker with the jake, you have a tool, learn how to use it just don't be that special one when everyone is resting,hopefully the day runners will have mercy on your soul nightrunner.
    Dang thing is governed back at 65, speed limit sign says 80, same old run, trying to run 65-70 on those runs feels like suicide, running past the governor gives you no out,sucks.
     
    Woodys and Dave_in_AZ Thank this.