hill climbing fast vs slow

Discussion in 'Experienced Truckers' Advice' started by shatteredsquare, Jul 11, 2021.

  1. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Several already mentioned EGT's. There's a lot more to EGT's though than just keeping it on or off the floor. You produce more heat faster, if you're trying to climb, closer to peak torque than you do if you keep RPM's well above it. Both EGT's and coolant temp.
     
    Bean Jr. Thanks this.
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  3. John E.

    John E. Light Load Member

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    Yeah, you guys know what your talking about, with my engine I have a manual switch to kick the fan on when climbing a grade sacked down.
    I turn the switch on every time I start approaching the 200F. Reason for me is to try and keep the temp's down in the engine as much as possible when working the engine hard. That's when the throb will come into it, the throb comes from right down in the belly of the engine.
    Pulled into a service center for some DEF cpl. weeks ago. Guy came over and was filling the def tank, looked at me, and asked what the sound was coming out of the engine, told Him was the air coming into the filters, He said no not that, mentioned the sound inside the engine, told me He never heard that before.
    I explained to Him I had been running the engine hard but not dragging it, had it spinning free at all times.
    I said to the Guy, you ever hear a throb in an engine, He had driven heavy loads for about 5 yrs. decent Driver. He told me no, never heard that sound. I mentioned to Him that when everything is in sync the floor in the Rig will tingle under your feet and carry up into the seat. He just looked at me and smiled.
    Told me He never heard that sound before but He actually could hear it.
    The tingle of power will bring the throb right into your belly. Them are the nights the Wife loves seeing me come home, get the picture?
    Run her free and run her cool.
     
    jason6541 Thanks this.
  4. TripleSix

    TripleSix God of Roads

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    I cooked an engine going up through the gorge on I 40. I cooked a drive axle pulling 100k up i68. I grenaded an 18 speed south of Lubbock pulling a superload. I wouldn’t buy a truck without a pyrometer. I wouldn’t buy a truck that was not owner op spec’d. You want the full gauge package. You can cook that engine. You can cook the tranny. You can cook those drive axles. A truck with idiot lights has none of them. If you are paying the bills, you need them.

    My issues in hill climbing were different. My drives would spin if I didn’t stay light on the throttle. This would sling the lugs off of the drive tires. I thought the clutch was slipping until I saw the rubber lugs hitting my mirrors. You will eat a set of drives quickly with a lead foot. Rpms up, light throttle…same way you approach slick roads.
     
  5. shatteredsquare

    shatteredsquare Road Train Member

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    barbie jeep DD13 tuned down to ~400hp (???) with automated manual go brrrrrrrrrrr

    can't overheat, can't lug, can't forget to shift and detonate your &@#*!, just keep a fat stack of hose clamps and extra coolant handy. fan only comes on by itself with coolant at 230ish, coolant falls to 200 in like 10 seconds, fan turns off, don't even have fan switch. :dontknow:. never seen oil temp above 232, that's only getting over Raton NM or leaving/returning LA to NorCal or any other 30+ minute loaded beatdown out there in sand land, even dead of summer with AC on at elevation, the corporate penny pinchers equipment spec skills with fleet construction keep my hair in place

    also always in the way :oops:
     
    Last edited: Jul 18, 2021
  6. TallJoe

    TallJoe Road Train Member

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    I watch turbo boost not to exceed 20 PSI. Sometimes, I wish I had a pyrometer gauge too. That's what I feel about the engine...I think it gives a balanced combination of speed and engine load. Fuel conservation going uphill is an afterthought.

    Someone mentioned the speed of light....and it put me into a contemplative mood.
    Why is the speed of light impossible to beat per known physics?
    Anything else in the Universe can go to infinity but the speed of light. Light is something between electromagnetic wave and particles of matter. In way, when we talk about speed, it is the matter that it can be attributed too. OK. Something traveling from point a to point be. OK. That's ok. Why there cannot be something beyond light that consists of the same electromagnetic wave and matter but still faster?
    Is it impossible because they can't answer scientifically or impossible because they know it for sure?

    Sometimes I feel that all those scientists are a bunch of pretentious hobbyists trying to figure out things beyond their recognition. Think about it. To be a scientist such as a physicist is a risky proposition. Maybe they are wrong about everything...what if when they die and they go heaven or hell where they are shown what the real thing is and all what they theorized about and claimed to be true was nothing but bunch of trivial misconceptions and errors?
    All their earthly life accomplishments might turn into $shiite and they professional lives will be demoted to not much more than a waste. At that point, a trucker will be better off. He or She at least moved and delivered things for a living.

    You might say...what about the technological advances and developments known to us now? Are they not the fruits of the science? I am not too sure, if they're not the poisonous fruits. Even spending time here, on forums like this, can be toxic...should we not prefer to meet with people and talk about things in person? Instead of playing computerized games, should we not rather meet and play chess and cards and ball games in real? Would life be any worse if, instead of diesel trucks, we'd be moving goods on carts powered by oxen? Everything so much simpler and more organic.
     
    Last edited: Jul 19, 2021
  7. shatteredsquare

    shatteredsquare Road Train Member

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    Tall Joe thinking uphill with a DD15 between the ears
     
    Bean Jr. Thanks this.
  8. SteveScott

    SteveScott Road Train Member

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    In 1977 when I was 17 my family moved from Ohio to California and we took my grandparents with us. My job was to drive the 1976 Ford Granada with granny across country. It had the 6 cylinder and barely made it over many of hills in the western states. My T680 fully loaded will handle hills much better than that POS.
     
    Bean Jr. Thanks this.
  9. okiedokie

    okiedokie Road Train Member

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    Hmmmm all these yrs I've been doing it wrong at least the first half.
     
    Last edited: Jul 19, 2021
    Bean Jr., Oxbow and Swine hauler Thank this.
  10. shatteredsquare

    shatteredsquare Road Train Member

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    there are some long grades that if you can hit the bottom at 75+, top gear will pull at 70 the whole way up without dropping off, but the same grade if you hit it any lower than 75, it drops too far below 70 too quick and you have to grab next gear, but then 65 mph doesn't have enough momentum to maintain speed, then you're dropping gears and clawing up the rest of the way with flashers on, wasting fuel and cooking tubes
     
    slow.rider Thanks this.
  11. Final Drive

    Final Drive Road Train Member

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    20210729_222643.jpg

    So I'm driving up this hill north bound on I-24 heading towards Monteagle, TN thinking about this post drive fast hell,I'm lucky to maintain 40 mph while keeping my engine temp at 200
     
    God prefers Diesels and Bean Jr. Thank this.
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