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  1. #1
    Bronze Member Notlaker's Avatar
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    Mar 2012
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    Niagara-on-the-Lake, Ontario
    Tractor
    Kioti CK30HST

    Default Is an Hour an Hour

    Out of curiosity;

    Since the maintenance schedules are determined by how many hours of use what I am curious about is the fact that one individual can use their tractor for 25 hours at a low RPM and another can use their tractor for 25 hours at a high RPM yet both use 25 hours used for maintenance scheduling purposes. I would think that the individual who is using high RPMs always should be scheduled earlier for maintenance.

    Am I missing something?

  2. #2
    Elite Member smstonypoint's Avatar
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    Oct 2009
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    3,967
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    SC (Upstate) & NC (Piedmont)
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    NH TN 55, Kubota B2320 & RTV 900, Bad Boy Outlaw 61" ZTR

    Default Re: Is an Hour an Hour

    It seems that I recall reading on TBN that some kubota tractors have hour meters that adjust for engine RPMs. I suspect the adjustment is nonlinear.

    Steve

  3. #3
    Elite Member whistlepig's Avatar
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    Jan 2009
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    4,176
    Location
    Preble County, Ohio
    Tractor
    Kubota B7800 with FEL

    Default Re: Is an Hour an Hour

    The hour meter reads less at lower RPM's. An hour of run time at PTO speed reads an hour. An hour at less than PTO speed reads less than an hour of run time.
    I used to do the Hokey Pokey but I turned myself around.

  4. #4
    Platinum Member MikeInEburg's Avatar
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    Feb 2008
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    930
    Location
    Emmitsburg, MD
    Tractor
    Kubota B7800

    Default

    An old Ford we had when I was a kid had the words "at 1515 RPM" after the hour meter. If the engine turned faster, the hours would go faster. As a kid, when you spend endless hours mowing, you have time to experiment and confirm.

    "As you go through life, make this your goal: watch the donut, not the hole"

    Kubota B7800
    BH-75A Backhoe
    Rhino 60'' finish mower

  5. #5
    Elite Member smstonypoint's Avatar
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    Oct 2009
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    3,967
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    SC (Upstate) & NC (Piedmont)
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    NH TN 55, Kubota B2320 & RTV 900, Bad Boy Outlaw 61" ZTR

    Default Re: Is an Hour an Hour

    Here's another thread on the topic: http://www.tractorbynet.com/forums/o...operation.html

    Steve

  6. #6
    Elite Member whistlepig's Avatar
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    Jan 2009
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    4,176
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    Preble County, Ohio
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    Kubota B7800 with FEL

    Default Re: Is an Hour an Hour

    ......or you can just watch your hour meter. It's pretty obvious.
    I used to do the Hokey Pokey but I turned myself around.

  7. #7
    Bronze Member Notlaker's Avatar
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    Mar 2012
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    50
    Location
    Niagara-on-the-Lake, Ontario
    Tractor
    Kioti CK30HST

    Default Re: Is an Hour an Hour

    The unfortunate part of it is that my hour meter appears to be stuck at 2 hours even though I know I have used my CK30 for at least 7 hours. I am still waiting for the dealer to drop by and have a look at it. I am starting to wonder if it was disconnected or something.

  8. #8
    Platinum Member
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    Nov 2010
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    636
    Location
    Marshall Texas
    Tractor
    Kubota L4400

    Default Re: Is an Hour an Hour

    IF the hour meter is driven mechanically or by using a magnetic pickup ( off the tach) then it will read faster as the engine runs faster. Some hour meters are simply operated by being powered up by the keyswitch on power... so they are counting anytime power is applied. How accurate any of them are is somewhat dependent on the manufacturer..
    Kubota L4400 GST

  9. #9
    Elite Member whistlepig's Avatar
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    Jan 2009
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    4,176
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    Preble County, Ohio
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    Kubota B7800 with FEL

    Default Re: Is an Hour an Hour

    Just watch the hour meter. Some accrue hours with the key on and the motor not running. The hour meter is a pretty important gauge for me. It wouldn't do for me to have it working.
    I used to do the Hokey Pokey but I turned myself around.

  10. #10
    Epic Contributor Bird's Avatar
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    Texas

    Default Re: Is an Hour an Hour

    Quote Originally Posted by PoorMansCat View Post
    IF the hour meter is driven mechanically or by using a magnetic pickup ( off the tach) then it will read faster as the engine runs faster. Some hour meters are simply operated by being powered up by the keyswitch on power... so they are counting anytime power is applied. How accurate any of them are is somewhat dependent on the manufacturer..
    Yep, I've had both kinds. My B7100 hourmeter was simply a clock that ran anytime the key was turned on, so it registered actual time regardless of engine speed. Of course that tractor also had a manual fuel shut-off (pull the throttle all the way back) instead of an electric solenoid, so the engine would run with the key turned off and the hourmeter would not be registering anything. Then the B2710 hourmeter was dependent upon engine speed. It would register an hour if you had the engine running at PTO speed; half as many rpms would only register half an hour in an hour.
    Bird

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