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Mark T

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Everything posted by Mark T

  1. Mark T
    If I read it right those two lead engineers were palzy walzys
  2. Mark T
    One of them ke[t on going with it.
  3. Mark T
    Mack and Scania used to compare notes over the years in the past. Trade off info here and there. Like the direct injection Diesel. Then there was this other little engine that was 998 cubic inches.......
  4. Mark T
    I like what was PPE back then .
  5. Mark T
    Could you picture add'n a hood to one of those
  6. Mark T
    Complete with daylight doors and all.
  7. Mark T
    International tried something like that with the Emeryville back in the '60s too.
  8. Mark T

    Best of Trump

    Mark T replied to JoeH's topic in Odds and Ends

    Hey.....it takes a confident woman to sport that bald look. That last one....never saw her before. Thanks for that OD 😂
  9. Mark T
    I think someone in New Jersey just got one for pulling a lowboy.
  10. Mark T
    Depending where they were coming from ???? I'm guess'n around four hours at least. There wasn't many of those guys spoke English A new Knee for Xmas ? Hope everything goes ok with that.
  11. Mark T
    At one point those trucks didn't stop. IDK if it was all one driver or what. That place in the picture was quite the place too ( one of my trucks was on the 6 o'clock news there in the begining ) (lol) Then when they started bringing in the dirt, it was pretty much what's in the pictures more than a couple times. If I remember right, one ran into a school bus in NJ. It was a T800 and the engine was out of it and it still weighed 94000 pounds. It was quite the three ring circus.
  12. Mark T
    That's close to 800 reasons to like them. Time was there was a connection between Scania and Mack. and some of Mack's best stuff was developed from that relationship.
  13. Mark T
    Hard tell'n what went on with that stretch job
  14. Mark T
    He might be a little off on the rate. If you saw some of that operation in action though ? Lots of those guys were going in there grossing close to 100K on a triaxle.
  15. Mark T
    It looks like the aluminum frame is bolted to the outside of the frame inside out (?)
  16. Mark T
    Coming soon to a town near you
  17. Mark T
    I took my lockout apart and disabled it. Mine are all air controled. No air, low range, air shifts them to high. The speedometer is all off the antilock brakes, so there's not much other than that needed to tell the truck anything.
  18. Mark T
    Most Macks that were made for vocational applications tended to have fairly slow axles and then a huge overgear. That's one of the reasons they were so good at crawling through jobsites and such. Old double over 13s and the TO9ALLs had a .63 or some crazy high overgear. Engines didn't have the torque back then. So they multiplied it in the axle. Those kooky high overgeared transmissions didn't spend a whole lotta time in those high gears. Even if they were ? still mid sixties for road speed around 2000 RPMs How times have changed.
  19. Mark T
    Some have a lockout on the range selector so as you can't shift the range when you use the power divider lock out. Which doesn't make much sense as Geoff had mentioned, 3 speeds are one in "high" and one in "low"
  20. Mark T
    They're just a planetary in the diff. There's a clutching gear to engage and disengage the planetary action resulting in two ratios from the same ring and pinion count.
  21. Mark T
    Big over gears ain't the answer. .74 is common in transmissions now. still need at least a 3.90 or 3.70 axle to cruise 70 and get the RPMs down. They gear them faster than that, but they don't spend much time in that overgear in a bulk operation. Especially in North East Pa.
  22. Mark T
    Thing now in the dump trucks, all the newer engines get their best mileage at a low RPM. Only way to cruise low RPM is a fast axle. Then when you get it in something soft.... you're screwed. I don't care how low the transmission is geared. It's the axle that gets it through that stuff. All these new engines have crazy off idle torque too (even feathering the throttle) IDK, they make perfect sense to me. To each their own I guess. I'm not moving huge weight, but they have purpose in my application too as far as I can see.
  23. Mark T
    Somehow ????? Peterbilt made it. Even though the salesman said not to (lol) 463s works like a charm as far as I'm concerned. (IDK how ???? it ever made it past engineering) 🤣
  24. Mark T
    IDK E Tech was a fantastic engine. 460 compared to a 475 Cat ? Uhhh NO. none the less plenty of power and a long life to overhaul if taken care of. 460 AMI ? not so much.
  25. Mark T
    I can tell you that 4 years ago if you went to a Peterbilt dealer and told them you wanted 2 speed rears , you were told you were nuts , or "nobody uses them". Then afterwards every single thing that's wrong with the truck ? It's because of those 2 speed rears. 😂 Maybe it's just me

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