New Dyno is almost here :)
Burning Brakes
Joined: Feb 2003
Posts: 1,144
Likes: 18
From: Panhandle FL
Re: New Dyno is almost here :) (ski_dwn_it)
OK, you lost me. :confused: I understand they can figure out HP via weight/speed distance. But I thought dynos calculated it by how fast/quick you could spin the "drums".Knowing how much the drums weigh and what it takes to spin them, is what I thought it was based on.
If I pull 200lbs off my car, I'm changeing my power to wieght ratio. But I'm not increasing HP.
Like SKI said, these are to be used as a reference. Doesn't matter how much you rate, what matters is the mods give you more or less HP compared to you reference point. :chevy
If I pull 200lbs off my car, I'm changeing my power to wieght ratio. But I'm not increasing HP.
Like SKI said, these are to be used as a reference. Doesn't matter how much you rate, what matters is the mods give you more or less HP compared to you reference point. :chevy
Thread Starter
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Re: New Dyno is almost here :) (SPEED750)
Thats pretty much it, if you make changes and do the same test on the same dyno be it a dyno jet or a mustang you will see a change be it an increase or decrease in power.
What I was trying to get across was that the Mustang dyno differs in the way it calculates the rear wheel power. Where as the same 300 FWHP LT1 vette on a DynoJet is accelerating a 2000 lb inertial mass, the same car on a Mustang would be accelerating a mass equal to the cars actual mass, plus the power losses the car would incur to maintain 50 MPH.
Therefore the Mustang would display a lower value of RWHP because it is accelerating a greater mass vs the DynoJet. Both dynos uses the same equations to compute Hp and Tq but only the constants are different.
Both dynos measure the correct horsepower and torque for the LOADS that THEY apply. Both dynos will show losses or gains from modifications. As explained by Mustang their dyno offers measurements that more closely reflects real road loading and their claim is that its much more accurate.
What I was trying to get across was that the Mustang dyno differs in the way it calculates the rear wheel power. Where as the same 300 FWHP LT1 vette on a DynoJet is accelerating a 2000 lb inertial mass, the same car on a Mustang would be accelerating a mass equal to the cars actual mass, plus the power losses the car would incur to maintain 50 MPH.
Therefore the Mustang would display a lower value of RWHP because it is accelerating a greater mass vs the DynoJet. Both dynos uses the same equations to compute Hp and Tq but only the constants are different.
Both dynos measure the correct horsepower and torque for the LOADS that THEY apply. Both dynos will show losses or gains from modifications. As explained by Mustang their dyno offers measurements that more closely reflects real road loading and their claim is that its much more accurate.
