Over the coming weeks we will continue to fine tune the rule book and give more clarity to particular rules and also modify some to give a fairer more sustainable playing ground. We aim to have the final version of the rules by end of February after which only very minimal changes will be made.
In short these are the changes we have made:
We have modified the Clubsprint rule under BODY by deleting the word “rear wing” so as not to conflict with the rules under AERODYNAMICS which states “Rear wing assembly design is free, must be single element only” and we have also clarified that “aftermarket side mirrors are permitted” .
We have also added that “all vehicles in Clubsprint Class must carry current road registration. Rally registration is acceptable” under COMPETITIONS Clubsprint Class. We have also clarified the rule stating “guard rolling” for this class. Also amended is the Clubsprint Class rule stating the vehicle must retain its original aspiration – it now allows cars like the Toyota 86 and BRZ to compete using a turbo or supercharged version.
The other big omission that we have had many people write to us about is the wings on Hatchback vehicles in Clubsprint Class. This now reads under AERODYNAMICS “except in the case of a hatchback where the wing can be no higher than 150mm from the highest point of the wing to the roofline and must be on the rear portion of the roof.” Chevrolet Corvette C6 ZO6 and ZR1 have been added to the list of cars not eligible to compete in Clubsprint Class.
Finally the biggest “wholesale” change we have made regards the minimum vehicle weights in both Open and Clubsprint Class. The only fair way around this is to put a percentage in as we did for Clubsprint. The percentage you can now lose from the lowest vehicle weight of a production version of the manufactured vehicle is 5% for Clubsprint, 15% for Open Class and 20% for Pro Class. While this may be better for some and not so good for others this is the ONLY fair way to move forward and in most instances you will see we are very close to the mark. We will be using “documented” vehicle manufacturer weights so there will be no confusion.
Please update your regulations to this current Version 1.2
so the previously stated minimum weights no longer hold any bearing?
ie-if you’re using a car that already weighs around 800 or 900kg such as a lotus or similar the only restriction on your weight is the percentage as stated above?
if so that’s good, i’m just a little unsure from how that was stated
also i’m assuming “pro-am” will run with a 20% limit in line with pro?
That is correct Michael. We did consider the Lotus when we wrote the new rule set as they could end up seriously light but the reality is that to take a car that is already built using lightweight construction techniques and try to take 20% more weight whilst still remaining with in the rules would be a lot harder than you think.
And yes Pro am will run the same 20% limit as Pro Class
The amendment to weight rules is a good move.
This MX5 analogy is only fair if there is some sort of restriction against the MX5 from having the r35 running gears or some sort of restriction on increase in engine displacement (force induction or NA) from the factory spec. I would love to see anyone getting the R35 weight down to 1050kg! The r35 is heavy from all of it’s running gears. If I have an r35, I would probably rip all the gears out and put it in a Mini.
We have assessed this from every angle Dan and the reality is that we simply need to provide the fairest way forward and we simply used the “R35 vs MX5″ as the extremes of what we are talking about. What we were trying to put forward is that an R35 “effectively” had zero weight restrictions as it would be unlikely to be able to get to the minimum weight yet an already “light” car such as the MX5 can remove virtually zero weight and must run at factory spec. Anyway as this is a “tuner event” this is the way we have chosen to go with the rules to move the sport forward into the future as a much fairer deal for the majority. Good luck with the GTR powered Mini, cant wait to see it!
A few people who have invested a lot of money into dry carbon for their clubsprint cars will be upset the money has essentially gone down the tubes for this event – however it will retain a level playing field for most. Will be interesting to see the results nonetheless.
the reality is Taz…… Clubsprint class is the “STREET” class and “FEEDER” class to other categories.. We will never please everyone but we have written the rules to ensure commercial feasibility into the future and whilst “dry carbon” is something I would expect to see used abundantly in the Pro Class and possibly even the Open Class it is not something I see as sustainable in the Clubsprint Class moving forward.