SummerNats Quick Links
|Mini ROK Supplementary Class Information|
|Monday, 09 April 2012 11:44|
All basic engine specifications and dimensions will be found in the current Mini ROK pdf as published on the Super karts USA website www.superkartsusa.com.
The intent of the class is to run the engine as produced. The specifications are available to determine any modifications, not to allow blueprinting. No deviation from the “as produced” engine is allowed. All components must remain OEM.
Additions/clarifications in this version are italicized and underlined. Deletions are
Any information published herein that conflicts will be considered the superior reference.
Bore: 42.10 maximum
Stroke: 43.00 mm +/‐.10mm
Rod length: 90mm +/‐.10mm
CC: Assembled 7.5 w/LAD tool using Marvel Mystery Oil
Squish minimum: .032”min (with .060” solder)
Cylinder: Mini ROK Cup only as per pdf
Carburetor: DellOrto PHBG 18mm
The only allowed changes to the carburetor are main jet changes and needle clip position. Any other change or modification is not permitted.
Air Box: (1) 23mm tube(+/‐ 1mm) 2010 (silver) as supplied in kit with no modification except for the addition of an internal
Full chain/clutch cover: such as OTK, KG or Tillett or billet clutch cover with chain cover strap.
Clutch: 2010 as per pdf. No modifications allowed.
Exhaust: As per pdf, modification or repair not allowed. Cracked or broken exhausts will be disqualified.
Mount pattern: 80mm X 102mm Same as Comer K80, Rotax and HPV/KPV
Bodywork: CIK, FIK or IKF/WKA style allowed. Must include front fairing, nose, side pods and rear protection. Front bumper (nose) maximum width 42” (1067mm). May not extend beyond front tires.
Chassis: Since SKUSA endeavors to accommodate competitors from all organizations whenever possible, the following chassis regulations will apply to all Cadet chassis.
Chest protection: All drivers in this class are required to wear a chest protector with SFI Section 20.1 Certificationduring any on‐track session. Failure to comply may result in disqualification.
Claiming: Any competitor may claim an engine entered in the event subject to the following conditions: