What You Need To Know - You need to remove the magnet and replace the rear tires with Ortmann's 

• Motor: OEM Slot.it V12/"S" can in in-line configuration only
  • The Group C cars have come with 2 different motors as OEM.  Both are legal in the class as they perform similarly despite their different specifications
    • Slot.it part number MS04 motor with the translucent white endbell was the original OEM motor 2003 through 2007 (25,000 rpm, 135g*cm torque at 12v) 
    • Slot.it part number MS06 motor with the orange endbell has been the original OEM motor since 2007 (21,500 rpm, 170g*cm torque at 12v)
  • Motor Mounts: these cars have been released with two different motor pods as OEM. This is because Slot.it developed an "offset" motor mount system that essentially raises the rear axle up into the body from 0.0 millimeters (no offset) to 0.5mm to 1.0mm versus the position of the motor. The first 2 are legal - because the cars have come with them as OEM - the last one (1.0mm offset white or grey plastic ) is not and is no longer made for Group C cars anyway 
    • Slot.it part number CH13b motor mount in black plastic was the original OEM motor mount 2003 through 2011 and is legal
    • Slot.it part number CH70 motor mount in dark blue plastic has been the OEM motor mount since 2012 and is legal
• Rear Tires: Ortmann tires are mandatory.  You can choose from 3 types but we find the standard profile Ortmann #51a works fine 
  • #51a standard profile, #51 Wide low profile and #51b Wide standard profile are all legal
  • The OEM tire Slot.It part number PT1167C1 is not legal in any Slot.it compound type
• Front Tires: OEM Slot.it
  • Slot.It part number PT1159C1 - no other compound other than the C1 compound is permitted
  • Note: the part number 1159 and Slot.it are imprinted on inside of tire wall
• Wheels: OEM Slot.it.  All wheels should always have appropriate wheel inserts and are not permitted to run without them
  • Front wheels are plastic (Slot.It part number PA17-pl 15.8x8.2mm)
  • Rear wheels are aluminium (Slot.It part number PA43-al 17.3x8.2mm)
• Guide: OEM Slot.it guide. Again Slot.it have used different OEM guides, all are legal - see below for an overview. they are all 21/20mm long and 6mm deep at their deepest part. All other guides from Slot.it or other manufacturers are illegal
  • Original OEM guide 2003 to approximately 2011 was Slot.It part number CH26.  It is legal
  • Current OEM guide since approximately 2012 is Slot.It part number CH66.  It is legal
  • Original OEM guides in shallow configuration are Slot.It part number CH06 (long shaft) and CH17 (short shaft).  They are both legal (these were for use on older Scalextric Classic track which we no longer have in the club)
  • All other slot.it and other brand guides are illegal including all Slot.it screw-in guides (specifically part numbers CH88, CH10, CH07, CH84, CH85) which are generally 28mm long and 8mm deep 
• Gears/Axles: OEM Slot.it
  • Gears: Pinion gear brass 9 tooth Slot.It part number PI09; Crown (spur) gear aluminium or bronze + plastic 28 tooth Slot.It part number GI28-bz & GI28-al.  No Other parts are allowed
  • Rear Axle: OEM Slot.it steel Pro axles part number PA01-50.  See also motor mount section above. No Other parts are allowed
    • Note: maximum rear tracking width is 64mm (measured from outside of the tire walls).  When viewed from above the tires must not be able to be seen outside the bodywork which means some cars cannot use the ful width of the regulations.   
  • Front Axle: more recent Slot.it cars come fitted with a screw-based adjustable ride height system for the front axle              
    • You are free to adjust these as you see fit
    • Your car must still adhere to the club standard rule of the front tires rolling when the car is on a flat setup block and gently pushed by your finger from the rear of the car (i.e. when no extra weight is applied to the front of the car)
    • All Slot.it Group C cars use Slot.it steel Pro axles part number PA01-50. No Other parts are allowed
• Wires/Braids: OEM Slot.it or replace with any brand that works well. OEM are Slot.it braid part number SP14 and Slot,it wires part number SP22
• Bushings: OEM Slot.it or replace with any bushing that works well. No ball-race bearings of any sort are allowed in any class. OEM are Slot.it spherical bushings (part number CH56)
• Ballast Weight: Not allowed
• Magnet: must be removed and placed on nearest fridge
• Lights: you are free to add lights but will get an extra half lap per heat if you add them
• Chassis: Slot.it are unique in upgrading the core chassis over time adding the ability to use different motor types and configurations as well as adjustable front axle systems. Early (2003-2007) cars did not have adjustable front axles, later versions did.  You are free to use any Slot.it Chassis for the Group C cars and to upgrade your chassis to the latest version, currently called "Evo 6".  As of 1/1/2015 the most recent chassis Slot.it parts numbers for Group C are:
  • Porsche 956C LH CS02T-60; Porsche 962C LH CS03T-60; Sauber C9 Mercedes CS05T-60; Jaguar XJR 6 & 9 CS07T-60; Lancia LC2-84 CS08T-60; Porsche 956C KH CS09T-60; Jaguar XJR12 CS13T-60; Mazda 787B CS15T-60;  Porsche 962C KH CS03T-60; Toyota 88C CS19T-60; Lancia LC2-85 CS08T-60; Porsche 962 IMSA CS25T-60; Nissan R89 C CS28T-60     
• White Kits, Body Kits, Crashproof and Transparent Parts: Slot.it provides complete car and body kits in white plastic as well as crashproof and replacement parts for nearly all their cars.  You are free to use them as you see fit although we would like any white bodies to be painted before you race them
• Lexan Cockpits: Slot.it produces lightweight lexan cockpits for most of its cars.  They are illegal

Eligible Cars - There are 15 body styles and 90+ liveries from which to choose. The list below is in body style release order.

• Porsche 956C LH
• Porsche 962C LH
• Sauber C9 Mercedes
• Jaguar XJR-6
• Jaguar XJR-9
• Lancia LC2-83
• Porsche 956C KH
• Jaguar XJR-12
• Mazda 787B
• Porsche 962C KH
• Toyota 88C
• Lancia LC2-85
• Porsche 962 IMSA
• Nissan R89
• Porsche 962C 85

• Also eligible are hybrids's defined as any plastic or resin bodied period Group C1 Le Mans cars running on one of the class eligible Slot.it chassis/ drive-train/ wheel /tire combinations.  The class is specifically not intended for C2 and lesser classes of the period
  • The cars must specifically be approved in advance by Stephen (no exceptions and no other person can allow or disallow a hybrid car once it is approved);
  • The chassis must sit flush with the body of the car, as it is with all other class eligible cars;
  • The body must at minimum weigh the same as the average of the OEM class eligible cars.  For this class that weight is 21 grams and any makeup weight must be added to the bottom of the driver pan, not the chassis.