CLASSES |
STANDARD
SPECIFICATIONS |
Spark plugs and spark plug caps may be replaced by others of other characteristics.
Revolution counters may be installed. |
| All auto lubes may be removed, together with parts related thereto. |
| The rubber engine mounting may be replaced with solid or mounts with similar characteristics. |
| Springs may be added to the throttle lever of the carburettors |
| No skimming, grinding or machining of any part is allowed. |
| Electric starts are not permitted. |
BLUEPRINTS
SPECIFICATIONS
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| PISTONS |
| Where a dimension is quoted on a piston, metal may be removed to reach a specific weight, provided the dimensions are maintained. Should there still be an excess of weight, this may be removed from the inside of the piston. Example: the inside of the skirt or the area where the gudgeoned pin goes through |
| FLYWHEEL |
| Holes may be drilled in the flywheel to reduce weight. It is not allowed to reduce the outside diameter or to reduce the thickness at any point. |
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