SULTANS OF SPRINT challenge
Sultans of Sprint "FREAK CLASS" Technical Rules
Sultans of Sprint "FACTORY CLASS" Technical Rules
The technical rules for the Sultans of Sprint “FACTORY CLASS” are based on a different concept allowing motorcycles powered by an air or oil cooled or water cooled twin cylinder four stroke engine.
This class is supported by BMW Motorrad, Indian Motorcycle, Yamaha Motor Europe and Triumph Motorcycles.
Therefore the motorcycles which can enter are the following:
BMW R nine T, BMW R 1200 R, BMW R1250RS, Indian Scout Sixty, Indian FTR1200, Indian Scout, Indian Chief, Yamaha MT-O7, Yamaha XSR 700, Royal Enfield Interceptor, Royal Enfield 650 GT, Harley Davidson all models.
The engine capacity is unlimited as well as the supercharging system or the fuel used. The race bike has to be custom built (private workshop or in-house built) and to fullfill the following specifications:
> Fuel : ethanol, methanol or nitromethanol are not allowed. Race fuel is allowed.
> shifter system: no restriction.
> Frame can be an original or modified original.
> Swingarm can be extended up to 20% of its original length OR front frame modified to change the stem position and/or angle (maximum 20cm lowered or streched steering stem). Subrame can be modified or custom built.
> Wheelie bars: not allowed.
> The size of the wheels can be changed but the rear rim can not be larger than 5,5’’. Tires type is free but it’s highly recommended to use race slicks. Tires have to be available on the market (experimental race tires not allowed). Square profile tires are not allowed. The following parts are not allowed : magnesium or carbon wheels.
> The engine can be tuned without any restrictions (naturally aspirated / turbocharged / supercharged / nitrous injected). Bottle warming systems not allowed.
> The finished race bike has not exceed a certain power to weight ratio (weight measure with full gastank, oil, all fluids & battery in running conditions).
The rider has to weight 70kg minimum with all gears on (leather suit, gloves, boots, back protector and helmet).
If not an additional weight has to be added to the motorcycle to compensate.
The bike has to be equipped with:
-2 oval number plates (standard 28,1×23,7cm / one of each side of the bike). If bike is equipped with a fairing, the race number can be applied on a flat oval area of 28,1×23,7cm on each side.
-brake system on both wheels.
-safety wires on oil drain plugs.
-kill switch mounted on the handlebar.
For safety reasons the rider must be equipped properly with a ECE full face helmet, leather jacket & pants (preferably one piece leather suit), back protector and proper riding boots and gloves.