Tame the Surge...

Discussion in 'Tanker, Bulk and Dump Trucking Forum' started by deafaviator, Nov 25, 2017.

  1. deafaviator

    deafaviator Light Load Member

    81
    113
    Sep 25, 2017
    0
    Been driving smooth bores for a couple of months now. Drove straight trucks with 3,000 water tanks for two years prior but they didn’t surge, just did more of a lazy slosh.

    First time I got hit with a surge I thought I broke something. Second time I thought I got rear ended. I still check for getting rear ended now and then lol

    I’ve been able to hone my driving habits to be a lot smoother and gradual, but I’m still getting some real nasty impacts sometimes. I also can’t seem to avoid getting assaulted on uphill downshifts.

    Anyone got some advice on taming the beast?
     
    Badmon Thanks this.
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. MACK E-6

    MACK E-6 Moderator Staff Member

    50,076
    238,847
    Sep 19, 2005
    Baltimore, MD
    0
    Sounds like might be downshifting too soon like you're trying to use engine braking effect to slow yourself.
     
    G13Tomcat Thanks this.
  4. deafaviator

    deafaviator Light Load Member

    81
    113
    Sep 25, 2017
    0
    No I rarely ever get surge on downshift. Only on upshifts.
     
  5. MACK E-6

    MACK E-6 Moderator Staff Member

    50,076
    238,847
    Sep 19, 2005
    Baltimore, MD
    0
    Forgive me sir, but first you said...

    ....And then said...

    What's going on there?o_O
     
  6. deafaviator

    deafaviator Light Load Member

    81
    113
    Sep 25, 2017
    0
    You got me haha you’re right but what confused me is you’re talking about engine braking which I wouldn’t do uphill but I think you were just comparing the possible timing of my shifts correct?

    On uphills I’ll shift when RPMs fall to around 1100-1200. Problem is everything is in the back of the tank in uphill plus I’m pulling. Shifting releases that “tension” and when I get back on the throttle tge product slams to the back again.

    Doesn’t seem avoidable because if you try to be slow and gentle you’re going to lose all your momentiob real fast and before you know it you’re all the way down to low side crawling 10-15.
     
  7. Thermos Bottle

    Thermos Bottle Light Load Member

    281
    16,713
    Apr 6, 2015
    GA
    0
    I shift slightly early, right when the surge is about to hit, but then it doesn't. Hard to explain, it just becomes part of you after so much practice.
     
  8. Cali kid

    Cali kid Road Train Member

    1,802
    2,540
    Feb 15, 2011
    IE, CA
    0
    It's just something that is learned over time and will very from product to product. It's not about rpms, it a feel. Kinda like floating gears both upshifting and downshifting.
     
    SplashDogs and G13Tomcat Thank this.
  9. Fold_Moiler

    Fold_Moiler Road Train Member

    1,926
    3,529
    Mar 17, 2017
    0
    Float the gears and shift fast to avoid slowing down and then speeding back up.

    I pretty much always stop with my engine brake too. I’ll downshift to like 6 or 7th and then just slowly coast to a stop from there.

    When all else fails hold onto your drinks and giver’er hell. Lol

    Been driving smooth bore for a year I’m a lot better than I was but sometimes it’s unavoidable especially backing up off road.
     
    SplashDogs and Smut Thank this.
  10. RockinChair

    RockinChair Road Train Member

    5,391
    14,473
    Feb 19, 2012
    Lubbock, TX & thereabouts
    0
    You know the product is gonna hit the back when you start up the hill, right? Time your shift so that you apply power immediately after it hits.
     
    ChicagoJohn and G13Tomcat Thank this.
  11. ChicagoJohn

    ChicagoJohn Road Train Member

    2,390
    2,755
    Jan 14, 2016
    Chicago
    0
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.