MA Rule Change Bulletin - #1633
Motorcycling Australia have released to the following bulletin:
Historic Road Race
MX / SX
Classic MX / Classic Dirt Track
Rule Pertains to:
The use of titanium in machine frames and parts.
Current Rule in the 2017 Manual of Motorcycle Sport:
10.22.8 Materials and Construction
a) The use of titanium in the construction of the frame, the front forks, the handlebars, the swing arm spindles is forbidden. For wheel spindles, the use of light alloys is also forbidden.
10.27 FORMULA TWO SIDECARS
10.27.1 Frames and Parts
10.27.1.12 Titanium may not be used in the construction of the frame, front forks, handlebars, swinging arm and wheel axles.
16.18 FRAMES AND PARTS
220.127.116.11 Titanium: The use of Titanium is not permitted in the construction of the frame, the front forks, the handlebars, the swing arms or the wheel axles of any machine.
New Rule after Change:
The use of titanium in the construction of the frame, the front forks, the handlebars, the swinging arm, the swinging arm spindle and the wheel spindles is forbidden unless OEM. The use of light alloys for wheel spindles is also forbidden unless OEM. The use of titanium alloy nuts and bolts is allowed.
Rule wording will be included under the following sections across all disciplines:
This rule is to be enforced across all disciplines as it is a safety issue; with titanium axles and pivots at a high risk of breaking.
Over time Titanium becomes brittle and can break unexpectedly.
The changing of current wording where it exists in the 2017 MoMS brings the rule in line with FIM regulations.
Rule change effective from:
(03) 9684 0512