downshifting an 8 speed freightliner

Discussion in 'Questions From New Drivers' started by wikoffz, Mar 22, 2013.

  1. wikoffz

    wikoffz Bobtail Member

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    Mar 22, 2013
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    Hello I graduated truck driving school just barely. And I am wondering how to downshift an 8 speed and what the speed to gear ratio is? For example on a 10 speed 7th gear is 25 mph and 8th is 30. How does that for an 8 speed? Is it similar?
     
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  3. Wildhorse192001

    Wildhorse192001 Light Load Member

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    Mar 21, 2013
    Campbellsville ky
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    It's very similar, most likely a 9 speed though, 8th is your top gear, they count low as your 9th gear. Just pretend you're in 10th with a 10 speed when you're in 8th and when you slow down and start dropping gears just apply those same speeds to the same shifter location as I you were in a 10. In other words treat 8th like 10th, 7th like 9th, 6th like 8th. That'll work for you until you get a better feel for the truck, then you won't even have to look at your speedo to downshift you will just do it on instinct. Good luck!!
     
  4. muff

    muff Light Load Member

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    Dec 20, 2010
    ontario,Can
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    Don`t over think what you are doing . You are making a simple maneuver more difficult than it has to be. let your RPM down to about 1100 then drop a gear. the key to a sucessful down shift will be proper rpm when you go to put it back into the next lower gear likely approx 1600 to 1700 rpms. all trucks are different and some are more finicky than others .
    Also try not to downshift while turning as this will kill your forward momentum and will make the shift more difficult
     
    WitchingHour Thanks this.
  5. perufb

    perufb Light Load Member

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    Oct 3, 2012
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    Dont worry so much about your road speed, watch your tack and learn from there. For example when you get to top speed let your tack fall off 400 and drop your gear, watch your speed and keep going, and eventually it will become 2nd nature.
     
  6. Njnoob

    Njnoob Light Load Member

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    Northcentral NJ
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    Figure out what method is good for you. I prefered the MPH method (25/7 35/8 45/9) it's simple first grade math; my boss liked the tac method.
     
  7. MJ1657

    MJ1657 Road Train Member

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    Isanti, MN
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    Don't use the tach or speed learn to do it by listening and feeling.

    You have to many other things to watch for. Eyes on the road not on the dash.
     
  8. Wildhorse192001

    Wildhorse192001 Light Load Member

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    Mar 21, 2013
    Campbellsville ky
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    Very good point mj, that would be best, keep an eye out front and learn to listen to the engine, it's easier than it sounds!
     
    MJ1657 Thanks this.
  9. muff

    muff Light Load Member

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    Dec 20, 2010
    ontario,Can
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    It`s not like your staring at the gauges . until a new driver can distinguish the tone of the engine then the quick peek should not be a problem . It may only take a few days to learn the technique by ear ,others may take longer. Everyone is different.
     
    Joetro Thanks this.
  10. Allow Me.

    Allow Me. Trucker Forum STAFF Staff Member

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    WHY, WHY, WHY does every newb want or thinks he needs to know how to downshift from day 1 behind the wheel ? When I was an instructor, every, and I mean every student THOUGHT he needed to know how to downshift as soon as he got behind the wheel. I said, "you don't even know how to drive forward yet" ! Believe it or not, you can actually come to a complete stop WITHOUT downshifting ! Trust me on this. After you get some wheel time, you can start thinking about how to downshift.
     
  11. Steve C

    Steve C Bobtail Member

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    Jan 1, 2013
    Wichita, KS
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    I'm a noob and believe me I'd rather not have to learn to downshift so I could concentrate on other things, but I have a question:
    How am I supposed to make a turn when I have a green light without downshifting?
     
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