1) General Guidelines
a) The intent of this rule is an attempt to create a fun and economical class in which participants of all skill levels have an enjoyable racing experience as well as a reasonable chance at success.
2) Hull Specifications
a) LSO hulls must be a Deep-Vee or catamaran type hull.
(1) On a Deep Vee, the deadrise angle must be between 16 and 28 degrees as measured at the transom. (Angle A in hull drawing.)
The intersection of the bottom and the side at the chine must not exceed 125 degrees as measured at the transom. (Angle B)
b) Minimum hull length is 26 inches.
c) Freeboard, as measured at the tallest point on the side of the hull, shall not be less than 1”.
d) Steps are allowed on both hull types.
e) All efforts should be made to color and number hulls in the spirit of real offshore racing.
However, this class is intended to be stand-off scale class. Fun and the inclusion of as many racers as possible are the primary objectives.
3) Motor Specifications
a) Power in this class will be limited to a single motor commonly referred to as a "700 series" motor. Specifications for these motors are as follows:
(1) Can Length: 66 to 67 mm (2.598 to 2.638 inches).
(2) Can Diameter: 42.2 mm (1.661 inches). This excludes option torque ring.
(3) Fixed endbell
(4) Fixed brushes
(5) Ball bearings and bushings are legal
b) No modifications may be made to the motor. Except for normal wear, it must be run as shipped from the manufacturer.
c) Current motors known to conform to these specifications include Graupner 6306, Graupner 6316, Fine Design SS1, Fine Design FD-EM 775, Robbe power 700 9.6, MPI ACC373 Promax 700, Hopf Viper 700 QC 9.6 Volt Neodym-Race 66mm, Hopf Viper 700 QC 12 Volt Neodym-Race 66mm, Hopf Viper 700 XLG 9.6 Volt 66mm
a) Current motors known to be illegal because the can is too short include Hopf Viper 700 QC 9.6 Volt RS-Neodym 60mm and Hopf Viper 700 QC 12 Volt Neodym 60mm.
b) Power will conform to class "P" specifications in that 9-12 sub C cells are allowed.
4) Race Courses
a) Clubs and events may choose between 3 race courses.
(1) The standard NAMBA oval.
(2) The second course will be the standard oval with a left turn buoy which will be placed halfway (85 ft.) down the middle of either the front or back straightaway and 10 feet inside the course (see diagram).
(3) The third (large) Offshore course is the same as the “M” course with the addition of an “Offset Buoy”. The Offset Buoy shall be positioned in line with either the front or back straightaway, and 85 ft. from any of the course's 4 outside turn buoys.
This diagram is provided as example and illustrates the right rear offset with the left turn buoy in the front straightaway.
5) Race Format
a) The length of each heat shall be 10 laps for all 3 courses.
b) Either a flying clock or Le Mans start, as described in the ELECTRIC COMPETITION, RACE FORMAT section of the rulebook may be used.
c) Driving will be in accordance with all NAMBA Rules of Racing.
a) Jump starts will incur a one lap penalty.
7) Record Courses
(1) Records may be maintained for performances on all 3 courses.
(1) Should an event award a “High Points Offshore Champion” or “Offshore Team Points” award, this class should not be included in the calculation for those awards.
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