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What do I need?

Discussion in 'Questions To Truckers From The General Public' started by enviro guy, Apr 27, 2011.

  1. Apr 27, 2011 #1
    enviro guy

    enviro guy Bobtail Member

    3
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    Apr 27, 2011
    Ada, OK
    0
    I have the task of obtaining a truck trailer combo capable of transporting a mobile drilling rig and associated tooling. I have little knowledge of trucking as a whole and would like some help.
    The rig to be transported weighs in the neighborhood of 20,000# and I would guess the tooling to weigh within the 20,000# range as well. We are buying a hydralincally tailed trailer to haul it on that I understand will weight between 15 - 20K as well. My question is what do I need truck wise? GVW, GVCW, horsepower, etc.
    We currently have a Peterbilt 335 setup with a flatbed that we have considered converting for this use. It has a 300hp powerplant and would have to be fitted with a fifth wheel, wet kit, and tractor kit (I believe this is air to the trailer for brakes?). It has a listed GVW of 52,000#. It seems this is considered by some to be a medium duty truck, can it handle the load I need?
    thanks for any and all help
     
    enviro guy, Apr 27, 2011
    enviro guy, Apr 27, 2011
    #1
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  3. Apr 28, 2011 #2
    Allow Me.

    Allow Me. Trucker Forum STAFF Staff Member

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    So, to understand you correctly, the empty trailer weighs 15-20, the payload will be about 40, right ? The problem I see is your power unit will be underpowered with 300hp. Is it a 3 axle ? Now it will depend on how far you travel too. You could grunt down the highway at 45 if you're just going 25 miles and short hops.
     
    Allow Me., Apr 28, 2011
    Allow Me., Apr 28, 2011
    #2
    enviro guy Thanks this.
  4. Apr 28, 2011 #3
    enviro guy

    enviro guy Bobtail Member

    3
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    Apr 27, 2011
    Ada, OK
    0
    Yes, the empty trailer weighs 15-20 and payload 40 or so. Yes, 3 axle as in 1 front, tandem rear. So what kind of power do I need? Travel will be all over Continental US.
    Thanks.
     
    Last edited: Apr 28, 2011
    enviro guy, Apr 28, 2011
    enviro guy, Apr 28, 2011
    #3
  5. Apr 28, 2011 #4
    passingthru69

    passingthru69 Road Train Member

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    Jul 12, 2009
    davenport,Ia / ratchaburi, thailand
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    Well you will need a tamdem for sure.
    Now the million dollar question is.
    What is the total weight exactly for the trl. and ld.?

    Remember you cannot go over 80,000 pounds legal for multi piece load on the trl.
    So you need to know the weight and then you can figure your trk. weight in.
    Horesepower I would suggest at least a 500 horse power.

    Then do you want air ride tractor or spring ride?
    Most trks. now are air ride.
    Are you going off road much?
    Then you need to look at rear end ratios for pulling and the soft ground or mud fields your are going into.
    Also have a good pull pin up front if you need to be pulled in and out of the job sites.
    The list can go on, but this will give you a good start on what you need to look for
     
    passingthru69, Apr 28, 2011
    passingthru69, Apr 28, 2011
    #4
    enviro guy Thanks this.
  7. Apr 28, 2011 #5
    enviro guy

    enviro guy Bobtail Member

    3
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    Apr 27, 2011
    Ada, OK
    0
    Is that 80,000# number including truck weight, or trailer and load only?
     
    enviro guy, Apr 28, 2011
    enviro guy, Apr 28, 2011
    #5
  8. Apr 28, 2011 #6
    passingthru69

    passingthru69 Road Train Member

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    Jul 12, 2009
    davenport,Ia / ratchaburi, thailand
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    total weight of trk /trl and load
     
    passingthru69, Apr 28, 2011
    passingthru69, Apr 28, 2011
    #6
    enviro guy Thanks this.
  9. Apr 28, 2011 #7
    Hardlyevr

    Hardlyevr Road Train Member

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    A one stack Mack with a window in the back!

    Sorry, couldn't help myself. If you are around 60K with the trailer and load, and hopefully the trailer tandems are rated for the legal 34K limit, and you can load the trailer so that is all they are weighing, then you are up to the weight range of a class 8 3 axle tractor. Depending on what you spec it could weigh up to around 18K itself. So you might be able to tag it for less than 80K, but it's gonna be real close. You'd want to put it on a scale to be sure, but 80K would be the safe bet.
     
    Hardlyevr, Apr 28, 2011
    Hardlyevr, Apr 28, 2011
    #7
    enviro guy Thanks this.
  10. Apr 29, 2011 #8
    WitchingHour

    WitchingHour Road Train Member

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    You have to figure out your powerplant and gear ratios, and pretty much your entire drivetrain. Horsepower can be a bit deceptive - the 6.7 Cummins now available in a Dodge pickup can crank out 500 horsepower, but you would never use it for a semi. You'd want probably at least a 12 liter motor... you can get up to close to a 16 liter, but you also have to factor in weight, as well.
     
    WitchingHour, Apr 29, 2011
    WitchingHour, Apr 29, 2011
    #8
    enviro guy Thanks this.
  11. Apr 30, 2011 #9
    bellydumper

    bellydumper Light Load Member

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    Jan 29, 2011
    San Antonio , Texas
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    Yeah those macks can pull that load with ease. They are more like oilfield trucks to me IMO!
     
    bellydumper, Apr 30, 2011
    bellydumper, Apr 30, 2011
    #9
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