Is Re-gearing worth it?
Hello all. My name is James. My wife and I just purchased a 2012 Coleman 274BH and we absolutely love it. It comes in at 4580 dry. Our TV is a very low mileage mint condition 2007 F150 with the 4.6...
Forum Discussion
06Fargo wrote:APT wrote:Turtle n Peeps wrote:
WOW! please don`t offer advice on things you are not completely knowledgeable on.
You will never see it because chassis dynamometers calculate wheel power by dividing out the transmission and differential ratios.
Actually don't they measure torque at rpm to calculate power (HP) ?
Actually a chassis dynamometer measures horsepower.
A large heavy drum is accelerated to a given rpm and time is measured to reach that rpm.
We know what the inertia of the drum is. We also know how much horsepower is required to accelerate the drum from one rpm to another in a given time.
Many very small rpm changes are plotted vs horsepower required for each change.
This gives a horsepower vs rpm curve.
From this a torque vs rpm can be calculated.
