Forum Discussion
blt2ski
Feb 07, 2020Moderator
A 5w will almost ALWAYS get better MPGs than a tow behind per some past posters that delivered trailers. Best was a non slide smooth walk 5w. Worst, an aluminum corrugated sidewall TT. Aerostreans also did fairly well too.
So if trailer choice is heavier by 400-800 lbs of smooth walk siding, the better wind resistance aerodynamics, more than makes up for heavier trailer!
With this also said. At least diesels, and older style gas motors, on level towing etc, best mph is at peak or just below peak torque. 1600-1800 rpm or so.
Best pulling power on a grade, is looking at an HP torque chart, pull at RPM share those two lines cross. Generally speaking, half way between peak torque rpm, and peak HP RPM. Example, peak torque is 1800, HP 4000, best hill pulling on a long grade is to hold around 2900-3000 rpm or there about.
Marty
So if trailer choice is heavier by 400-800 lbs of smooth walk siding, the better wind resistance aerodynamics, more than makes up for heavier trailer!
With this also said. At least diesels, and older style gas motors, on level towing etc, best mph is at peak or just below peak torque. 1600-1800 rpm or so.
Best pulling power on a grade, is looking at an HP torque chart, pull at RPM share those two lines cross. Generally speaking, half way between peak torque rpm, and peak HP RPM. Example, peak torque is 1800, HP 4000, best hill pulling on a long grade is to hold around 2900-3000 rpm or there about.
Marty
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