[Chillerman]

Originally Posted by Linn@AmazonTuning

the rollar has a brake to put resistence against it to simulate weight and the wind resistence is calculated into the computer program..

you can pick this apart if it entertains you to do so.. we use it to get a close idea of what the vehicle will do at the track in real time..if it does it on the dyno you SHOULD be able to get to that on the track too..unfortunately the dyno can not calculate for driver ability.. not that it is all that hard to take a Lightning down the track.. you pretty much do a burn out and point and shoot..if I can do it.. you all should look like pros

Linn,

Not trying to start an argument here. I would like to know how you know how much brake pressure to put on the dyno to simulate the weight of the vehicle being tested? Also is the wind resistance calculation a fixed number or is it a variable in the program? Can the dyno discern between slicks, drag radials, or street tires? I do realize that you have an eddy-current dyno which is state of the art equipment. I know what eddy-current equipment is since I'm exposed to it every winter in my line of HVAC work so we can test the integrity of the copper tubes in water cooled industrial centrifugal chillers.

If there are variables in your computer models, then I would think you could make whatever predictions you want about track performance. I'm a firm believer in test&tune at the track, but also a believer in tuning your vehicle for the mods it has. But track testing is the only way to know what the vehicle is capable of.