Approved Rule Proposals for 2011

[Otto]

I guess I was missing something after all Peter Sorry

[Greg Phillips]

I think the scaling factor for HP increases due to engine swaps (2.2 times the HP increase) is out of line with the base point scaling:

If one were to take a 375 base point 2007 Cayman (with 245 HP) and do nothing more than replace the engine with a 295 HP Cayman S engine of the same year, the car would take a 110 point hit for engine swap/HP increase (50 x 2.2), making the total 485 points, even though a 2007 Cayman S (with a six-speed, wider wheels, and bigger brakes) only has 445 base points. The base Cayman would have no other advantage that justified a 40 point penalty versus the Cayman S.

It seems the HP upgrade scaling factor is unfair to those who swap an engine (at least in this example). For this example, the scaling factor should be closer to 1.4.

With any new rule system there is bound to be some tuning involved. Just eyeballing the numbers it looks like this version is very tough on HP and tire width, and easy on soft compounds. All the more reason to run dual class this year so the rough edges can be smoothed. Power/weight ratio and grip should be 95% of this game. Everything else is just fluff IMHO. I am not really sure who cares which cams, heads, carbs, injectors, or displacement you got in there. What is the TQ/Wt? Can it be measured by a scrut in the event of a protest?

Martin, that Cay S should be well into GT3 territory on an AX course once you get her sorted. You should be able to give Dan in his old air pumper a run for his money. Don't tell me you are going to let those faded 944s drive around you in that car

Yes the tire points are carried over from our present rules (x10).
The Zone 7 rules have:
25 points for treadwear 100-200
50 points 50-100
100 points <50
Slicks =175

I think that these are more reasonable points for the performance advantage of sticky and stickier tires.
The intent of the rules is that the points for a modification should provide similar performance advantages.

Greg

[Otto]

Yes the tire points are carried over from our present rules (x10).
The Zone 7 rules have:
25 points for treadwear 100-200
50 points 50-100
100 points <50
Slicks =175

I think that these are more reasonable points for the performance advantage of sticky and stickier tires.
The intent of the rules is that the points for a modification should provide similar performance advantages.

Greg

Actually the tire points under our new rules are more severe than the old rules in every case. For example <50 treadwear used to be 4 points and slicks 6 points which would be equivalent to 40 points and 60 points respectively under the new rules. Instead they are now 60 points for under <50 treadwear and 80 points for slicks, which is a meaningful increase in penalty points and in my view about what those modifications are worth relative to each other. The key point to always remember is that these modifications are open for everybody to use so nobody should feel they are at a disadvantage by having the tire modifications worth that many points. If you feel they are a bargain, go ahead and use that modification to your advantage. Nobody is stopping you.

With respect to Zone 7 penalty points for treadwear, believe they are out of proportion to their value. I have used Hoosiers (<50 treadwear) in my car as well as slicks and the advantage of slicks over Hoosiers is by no means 1.75:1. Just the same, the advantage of Hoosiers over 50-100 treadwear R-tires is by no means worth double points as prescribed in Zone 7 rules. Again, believe our new system is more reasonable in that regard.

[gocart]

For DE safety equipment will we get to choose which rule to follow? For example, I'm now in improved. A roll bar is required.
Under the "new" rules I have 370 mod points. No roll bar is required.

[c4s4pcs]

As I understand it, at the present time, for Zone 8 events, the official rules for 2011 are the "old" rules - the "new" rules are scheduled to take effect in 2012. Therefore, the rollbar stays on your Improved car this year. I have seen a suggestion that SDR non Zone 8 events start using the new rules for 2011, but this does not seem feasable to me.