Do you need to double clutch?

Discussion in 'Questions From New Drivers' started by bstrong3, May 31, 2015.

  1. bstrong3

    bstrong3 Light Load Member

    86
    24
    Mar 2, 2015
    Cape May, NJ
    0
    I have been driving manual all my life but not in a big rig, I just go from one gear to the next with the clutch in. Couldn't you just do the same in a rig?
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. taxihacker66

    taxihacker66 Road Train Member

    1,344
    1,224
    Feb 26, 2012
    Concrete jungle.
    0
    the only time You HAVE TO DOUBLE CLUTCH Is when you do your road test for your lic
     
    Jjay and Winston99 Thank this.
  4. camionneur

    camionneur Road Train Member

    1,239
    759
    Oct 18, 2013
    0
    I tend to triple clutch (or so), because I'm always slip seating something with different dynamics.
     
  5. gnaunited

    gnaunited Light Load Member

    66
    73
    Jun 7, 2013
    Denver, CO
    0
    Yes and no, but it does not work the way you think it does. You are in a non-syncronized transmission, therefore you must match the input shaft speed to the output speed of the selected gear before shifting. Your car does this for you. The truck will not.
     
    tscottme and ncmickey Thank this.
  6. Pumpkin Oval Head

    Pumpkin Oval Head Road Train Member

    1,679
    1,155
    Jun 24, 2010
    Scranton PA
    0
    A class 8 truck tranny is not like any tranny you have shifted before. You can shift a big rig in any of three ways....double clutch, single clutch, or no clutch. But unless you have the engine speed matched to your ground speed,the tranny will not shift. The easiest way to match them up is by double clutching, in theory.

    Depends on the truck too.
     
  7. street beater

    street beater Road Train Member

    4,578
    20,669
    Apr 18, 2014
    cold as hell, MN
    0
    First and reverse, thats how i was taught. Jake on three clutch to get going in either direction. Not sure i could clutch up the gears today if i tried. :)
     
  8. S M D

    S M D Road Train Member

    2,396
    3,406
    Mar 15, 2012
    sacramento ca
    0
    your post reads double clutch but your post shows single like a car. i learned how to float gears and then i learned how to double clutch. keep in mind though you dont have to push the truck clutch in all the way to the floor. just push it in a little bit, your knee will thank you in the long run lol. because i think everyone here knows that there is some heavy clutch pedals out there.

    push clutch in pull out of gear push clutch in put into gear. it is easy but thats only because i already know how to. lol
     
  9. Tonythetruckerdude

    Tonythetruckerdude Crusty Deer Slayer

    2,905
    47,744
    Dec 8, 2012
    hunting...../ retired
    0
    Do you have to .......no , should you learn how to ? Without a doubt a resonding YES. You never know when an opportunity will reveal itself. You may one day have the chance to land the job of your dreams. You go take the physical / drug screen , then you are asked to take a short road test. The examiner tells you where to go , where to turn , BUT , never mentions double clutching. You ace the test , zero issues , EXCEPT you don't double clutch , he fails you because of it. Seen it happen.
     
    wis bang Thanks this.
  10. bstrong3

    bstrong3 Light Load Member

    86
    24
    Mar 2, 2015
    Cape May, NJ
    0
    So if you don't have to do it what is the benefit of doubling, does it save the transmission or would I sometimes not get into the next gear without doing it?
     
  11. Tonythetruckerdude

    Tonythetruckerdude Crusty Deer Slayer

    2,905
    47,744
    Dec 8, 2012
    hunting...../ retired
    0
    Both really , theres always been a rather vigorous debate about the need to..... vs..... the need not to....I'm retired now , I did it my entire 40 year career for the most part , floating is much easier , and most drivers do it that way , I used the method because it was the way I was taught , I'm no engineer , but using the method correctly will take most of the shock out of the entire drive-line when shifting up or down , and IMHO that makes the entire drive-line last much longer before expensive repair must be made. But , on the other hand some will say its not too hard on a drive-line to float , that may be correct in certain situations , I agree , but in bad weather , when you're loaded really heavy , OR , when you're in an off-road situation , I think its paramount that you use the double clutch method.
    See what I mean about the debate , I'm doing it with myself even,,,,,LOL.....Best thing /advice I can give you , is to learn how , become proficient doing it , you'll be glad you did. Hope this helps answer any questions you have. Any more ...ask away.....anytime....TTTD.
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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