Forum Discussion
blt2ski
Jun 03, 2017Moderator
THe max tow specs have a max of 12percent grade. 21 is pretty good. My 6.5 TD would out pull mydmax my 5 percent at 20K lbs. All due to better gearing in the trans, rear axel, and torque multiplication!
My navistar with a similar sized HP/Torque motor to the 6.5, can do 30K up a low 30 percent grade. The Dmax on the other hand, up a 3 percent freeway grade, due to 150+ percent more HP, would go faster. But if there was a 30 percent grade at the end, the 6.5, and navistar would make it to the camp ground if all three were loaded to 20K GVW or GCW! The dmax would stall out before getting there.
marty
My navistar with a similar sized HP/Torque motor to the 6.5, can do 30K up a low 30 percent grade. The Dmax on the other hand, up a 3 percent freeway grade, due to 150+ percent more HP, would go faster. But if there was a 30 percent grade at the end, the 6.5, and navistar would make it to the camp ground if all three were loaded to 20K GVW or GCW! The dmax would stall out before getting there.
marty
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