See, here's the problem with the internet - people assuming that they know what they are talking about and everyone else believing them. Boy am I glad CFR wasn't elected PRO - lucky escape for the Section!!
This is what was proposed, and passed, at the EGM.
4 Definition of a Zero-timing Speed Controller
4.1 Speed controllers may not be equipped with any form of automatic or programmable timing advance. If this feature is available on the particular speed controller it must be disabled and placed in an approved mode - i.e. the "ROAR blinking LEDs mode." Brushless Speed Controllers built without automatic or programmable timing advance will be allowed. The BRCA 12th Committee will provide a list of eligible speed controllers. Details of the requirement for the approved mode are contained in Appendix 2 – Zero-Timing Brushless Speed Controllers – and this requirement must be met for a speed controller to be eligible for racing in relevant GT12 Classes.
4.2 When using a sensorless speed controller/brushless motor combination Rule 4.1 does not apply.
4.3 Brushed Speed controllers are without restriction providing that they include an operating reverse function and are available with a recommended retail price not exceeding £65.
4.3 is a carry over from a long-standing rule to keep costs down. With the availability of things like the HW Justock speedo (£40 and very good) and the TQ booster (£20) the BL side of things can easily dip under that price. The Appendix referred to is the strict 'scientific' definition of a no-timing speedo which is used by ROAR. The BRCA EB is currently developing the testing regime to that we can eventually have a BRCA list and not rely on the ROAR one.
The classes of racing for 2012/13 season call for use of speedos conforming to that Rule, so it is 'no-timing-on-the-fly' (NTOTF) for the GT12 Circuit class and you can use any speedo that can be locked in that mode as defined in the ROAR list. Note that means Tekins using 223 software, not 202 or 212, with three LEDs blinking in neutral.
Blinky speedos are allowed, and for the very reason that we do want cross-platorm racing. GT12 is not forsaking the lo-cost ideal that Wes Raynor started with all those years ago. Whilst Circuit Racing does not embrace the 'lowest-cost' regime so successfully used in Oval classes, we don't want people to have to spend a lot of money to go circuit racing with pan cars on foam tyres. We can't please all the people all the time, but it is hoped that we will please all the posters in the last few days - except CFR in this case!! - who want to use equipment they already have. Please come back with more questions, I'll help where I can. HTH