tweaking with on track data
Both the ad hoc committee and the crb know adustments to restrictor sizes may be needed. This was never fixed in stone.....but good data is needed to make that decision.
We will have the opportunity next year to get some useful data on the same brand car with both a KAW and a GSXR engine.
There will be at least one Phoenix and probably a JDR with Kaw engines installed. Both can be kept to min weight.
If we look at acceleration data from slow to fast....say 50 to 140.....in the same chassis.....with the same wing settings and near same wt.....we can use that data to make adjustments if needed.
We just can't compare data from two different brand cars with totally different drag and weight. Also.....we can't just look at top speed..... or acceleration up to something less than top speed. The data has to look at the entire speed range.
It will probably take a full season to gather enough data to make a well informed decision.....but it is imperative we do so.
Until we have that data, the restrictor sizes recommended by the ad hoc committee are a very good starting point.....and are based on very good analysis of lots of dyno data, different gear ratios between engines, rpm operating range, etc.
Jerry
Power to Weight Ratio Rule?
O.K., here's an option.... If the restrictors aren't the way to go... (not saying it is or isn't at this point) what about utilizing a simple Power to Weight Rule.
Since the rules allow any Engine up to 1000cc currently.
Since we've established a 'Baseline' Engine with the Suzuki.
Establish a 'Baseline' Power / Weight Ratio for every officially Dyno'd Engine out there.
Pwr / Weight Ratio of the Suzuki for class car weight of 1000 lbs = 5.405
Pwr / Weight Ratio of Kawi (ZX10R ~197hp?) would make your car weight = 1065 lbs.
Lets say you end up finding a motor that pumps out 210 hP... you'd have to weigh 1135.
Then there would be no restrictors needed.
This rule wouldn't care what type of car you have, what aero package you've got etc.
Catch my train of thought?
Doug