INDEX G / H
G / H
CR33	GOGGLES
CR34	HARMONIC BALANCERS
CR35	HEAD PROTECTION
CR36	HELMETS
CR37	HYDRAZINE

ARTICLE:
CR33: GOGGLES
Windproof, shatterproof goggles or visors must be worn by all drivers of vehicles not having windscreens. Fire resistant goggles and/or facemask material are mandatory for supercharged or nitro-burning vehicles.
CR34: HARMONIC BALANCERS
34.1	All sedan or bakkie type vehicles running quicker than 11.99 seconds and all Dragsters, Funny Cars and vehicles where the engine is NOT enclosed must be fitted with either an explosion-proof harmonic balancer or an harmonic balancer scattershield.
34.2	The harmonic balancer scattershield must be constructed of 6mm thick steel plate securely fastened with at least two 10mm high tensile bolts in such a manner as to contain or deflect fragments should the balancer disintegrate. The width and circumference of the outer ring must be covered and the front of the shield should extend down at least to the level of the rubber ring in order to retain fragments or to prevent the outer ring from coming forward. A 10mm diameter hole may be drilled in the shield for timing mark purposes. No other openings are allowed.
34.3	Vehicles using a steel outer ring do not require a shield but the outer ring must have some positive means of preventing it from moving forward. This can be achieved by having a step on the back of the ring or a front retaining plate equal to the other diameter of the ring made from minimum 3m steel plate or 6mm alloy plate
34.4	All pulleys/crank hubs/harmonic balancers must be positively fixed to the crankshaft by bolts or pins
CR35: HEAD PROTECTION
In any car where a roll bar or roll cage is installed, a padded head protector must be provided at the back of the driver's head and constructed to prevent whiplash upon impact. The roll bar or cage must be padded wherever it touches the driver's helmet or other body contact area. A seat, which incorporates a correctly adjusted headrest to within 100mm of the back of the helmet, is acceptable.
CR36: HELMETS
36.1	All drivers/riders in all classes must wear a properly affixed SABS approved, or its equivalent, safety helmet while in practice or competition on the Drag strip.
36.2	Open-faced helmets are permitted in closed cars provided it can be established that a face masks or respirator is necessary such as in FC vehicles and methanol burning sedans. However, full-face helmets with built-in respirators are the accepted norm for this purpose. Note: Helmets are inspected as an essential part of the vehicle's safety equipment. Helmet straps should be worn beneath the chin. Chin guards or other devices that prevent the proper location of helmet straps are prohibited. The helmet of any competitor involved in an accident, collision or upset must be surrendered to the SANDRA or MSA Steward at the event for inspection.
CR37: HYDRAZINE
No Hydrazine is allowed in any class under any circumstances.
MSA Technical Committee