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Shifting Eaton 7 Speed - Speed for Gears

Discussion in 'Questions From New Drivers' started by FreightlinerGuy, Jul 16, 2013.

  1. Jul 16, 2013 #1
    FreightlinerGuy

    FreightlinerGuy Medium Load Member

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    Great Lakes, USA
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    Hey all,
    I'm curious of the speeds for a Eaton 7 speed.
    I'm talking about the trick used like 35 = 8th gear, 45 = 9th, etc..

    Would 5th be about 35 mph or?

    Thanks

    PS: there is no hi/lo, just straight 7.
     
    FreightlinerGuy, Jul 16, 2013
    FreightlinerGuy, Jul 16, 2013
    #1
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  3. Jul 16, 2013 #2
    TripleSix

    TripleSix God of Roads

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    Sounds like you're driving a 24 ft rental truck...been eons since I've driven one of those. That's worse than driving the old spring ride cab overs with Armstrong steering.

    Anyways, are you asking at what road speed do you shift? Don't worry about the MPH, do it by the rpm.
     
    TripleSix, Jul 16, 2013
    TripleSix, Jul 16, 2013
    #2
  4. Jul 16, 2013 #3
    FreightlinerGuy

    FreightlinerGuy Medium Load Member

    472
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    Apr 20, 2008
    Great Lakes, USA
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    Yeah, I'm asking at what road speed to shift, downshift really. I know 1700rpm is the 'sweet' spot, but still curious at what rpm/road speed to downshift.
     
    FreightlinerGuy, Jul 16, 2013
    FreightlinerGuy, Jul 16, 2013
    #3
  5. Jul 16, 2013 #4
    Sailorguy

    Sailorguy Bobtail Member

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    Jul 16, 2013
    Bethany Ontario
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    Only matters if you own it :)
     
    Sailorguy, Jul 16, 2013
    Sailorguy, Jul 16, 2013
    #4
  7. Jul 16, 2013 #5
    Colorato

    Colorato Road Train Member

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    My current truck is a 7 speed. Most up shifts are done at around 1800 rpm and down shifts are around a grand. I don't watch mph with it like I did my 10 speed. The 8th at 35 stuff won't work with it.

    Rear gears make a huge difference with a 7.
     
    Colorato, Jul 16, 2013
    Colorato, Jul 16, 2013
    #5
  8. Jul 16, 2013 #6
    Richter

    Richter Road Train Member

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    Feb 13, 2012
    Philadelphia Pa
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    There is no way to answer this without knowing tire size (preferably revolutions per mile) and rear end ratio. Once you know that it simple match based on the ratios of your trans. Also depends on rpm.
     
    Richter, Jul 16, 2013
    Richter, Jul 16, 2013
    #6
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