Dynos and Tires

[sparks57]

Does the size of tire change the readings on a dyno?

 

[hdm48]

Yes it does. I don't remember the formula for it but I think you can figure it out. I run 285 tires and I know they rob power from my readings. Oh well, this is the way I drive it so it don't mean nuthin.





Dave

 

[sparks57]

Ok, thanks. I thought it would, well... I knew it would, I was just wondering if they had compensators in the dynos.

 

[hdm48]

Compensators? Now that I don't know. I think Piers dyno does 'cause they asked me what size tires I had on before I dynoed it. But I don't know about Mustangs or Dynojets.

 

[Bob Beauchaine]

Dynojet dynos are an inertia type dyno and as I understand it "need" no adjustment. When you run on a Dynojet you turn a pair of drums that weigh a combined total of 5400 lbs. From there the computer does the rest - they also have a barometric setup so the altitude is automatically set.



Bob