| It measures the amount of power from the motor through the transmission and drivetrain. The *actual* power transfered to the ground does have some to do with the weight of the wheels BUT it also has to do with tire contact patch, road surface, road surface temperature, road grate, etc, etc.... Plus the major down fall to the Dyno Jet dynos is the fact that you have to strap the car down to a roller. Everytime the car is strapped down are the straps torqued down to the same torque spec? Is the car positioned on the roller in the *exact* place it was the previous time? This will also have an influence on what the numbers look like. I found this out years and years ago at Hocus Pocus when I had my car on the dyno one day and took it off to dyno another car and then put it back on only a hour or so later. I was not the one who strapped it down the second time. Well the car was making about 45 Rwhp *less* then it was a few hours earlier with *no* changes to the car. Come to find out the car was a little crooked on the rollers and the guy had strapped it down so hard one of my tow hooks was bent :-(. After that I always made sure I was the one to strap the car down. Anyway...I hope you get the point from my rambling.
Kyle "Grumpy Bear" Puckett
Sales@sgpracing.com
 |
