Changing from 3.73 to 4.10 gears
Hello all, After towing our new Reflection 320MKS from Eastern Iowa to Estes Park Colorado and back, I need more power for the hills. I have a 2015 F-250 with the 6.2 Liter engine. I have 3.73 years...
Forum Discussion
noteven wrote:
Anyone know why pickup OEM’s give higher trailer weight ratings with a spec change to lower rear axle ratio only?
It's about duty cycle. The more gear a truck, tractor or motorcycle has the more duty cycle it has.
My tractor has a gear into a gear into a gear. Wide open in low it will go an amazing 1/2 MPH but it puts down tens of thousands of ft/lbs to the ground.
The formula is this for 1 horse power: Lifting 33,000 lbs one foot in one minute. Now a horse can't lift 33,000 lbs without "help." So if the help comes in the form of gears or block and tackle or anything that will "help" the horse lift lets say 500 lbs 66 feet in one minute. (I think I did the math right on that?) :R
It doesn't matter if that horse can lift 33,000 lbs one foot in a minute or if that same horse lifts 500 lbs in 66 feet in a minute or any other combination..............that horse is still putting out 1 horse power.
That is all a gear is doing with a tow rig or my race car or whatever...........it's still putting out the exact same HP to the ground........same as the horse example above.
