Heavy Loads and rpm,s

I have a 470 series 60 with an 18 spd and I have no clue what the arse end has for gears but I smash that long skinny pedal all day long with a GVRW of 125-130,000 lbs. We have a truck with a 550 cat(yaya more power) but those motors are lazy and I always find myself over revving it because Im so used to my green turd of a motor.

Don't get me wrong, they pull awesome and keep up to lots on the highway(and pass a lot too) but you have to get it out of your head of "It's a diesel, they like low RPM" lol.

 

its not all about the rpms its also about the load, engine, transmission, and other components such as weight.. ill tell you that shifting at 2000 rpm's is way better than shifting at 1500 rpms.. people think its the other way around but thats a load of crap, shifting at 2000 rpms is the best way if you got a 8,9, or 10 speed transmission.why? well because there is typically a 400-500 rpm spread on low gears and a 600-700 rpm spread on high gears.. shifting at 2000 rpms helps to keep the truck going and to keep the truck from slowing down quicker than at 1500 rpms which saves fuel and does not over work the engine as much, if you shift at 1500 rpms and lug the engine way down to 1000 rpms or even lower than the clutch and transmission has to work harder and use the flywheel more to get the torque to get it back up to speed and keep going... people think that lower rpms is better for fuel economy and maintenance but thats bull crap, lugging the engine way down like that only increases wear and tear on the engine and transmission and clutch because they have to work harder to keep the vehicle up to speed and the fuel economy is not better the fuel economy is less, people say that using torque is more fuel efficient than using horsepower, the torque comes from the flywheel and to keep the flywheel going it has to use fuel to keep spinning and when you use torque the flywheel has to spin more and harder to keep going which in turn uses for fuel while keeping the engine at higher rpms keeps the engine from using the torque from the flywheel which in turn gives you better fuel economy.. they think that low rpm shifting is better for semi's well it aint, it may be good in cars because they have so many rpms yes, but not in semi's the average semi is governed at 2100 rpms.. while a car or pick up is anywhere from 4000 up to around 8000 or even more.. people make up this crap on paper and tell it to the world and change their driving habits but all it is doing is causing more trouble. sure it works out good on paper but not in reality, so for my conclusion i haul around 95k pounds, i shift at 2000 rpms, i drive a 9 speed truck, i start in 1st (low) go into second, then 3rd, then shift into high(same spot as 1st) and then go through the rest of the gears. i found this to be the most efficient

 

trust me the truck i use is a gutless wonder its a 92 freightliner fld120 with a 200 cummins and a 9 speed, but its a workhorse, i haul crushed cars

 

:smt017 Here we go!

Its not a certain number of rpms that drops every gear, its a percent. So, its not 500 drop at 1500