Quote Originally Posted by MotoSix
6.2.6

Current:

Motorcycle must meet track sound level regulations. A motorcycle not meeting
sound level regulations will not be allowed to continue until that motorcycle
meets required sound levels.

Suggest:

First, we must define decibel rating requirements, and measuring method:

"As measured at start finish at a distance of no more than <n> feet"

Then:

Motorcycle must meet track sound level regulations. A motorcycle not meeting sound level regulations will not be allowed to continue until that motorcycle meets required sound levels, and will forfeit all purse, contingency, and points earned in class when violation occurred. If violation occurs during a practice, competitor is required to pay a $50 fine and required to prove changes have been made before continuing.
FWIW, AMA is lowering the sound limit for 2011. Perhaps we should attempt to comply with that? Stolen from the press release:

"Most notably, the 2008 AMA Congress passed a 94 dB(a) standard for all amateur and Pro-Am motocross and off-road competition, effective in 2011. The new standard will not apply to land-speed racing, speed trials or drag-racing events.

The new level mirrors both the 2009 standard for professional motocross and Supercross racing in the United States, as well as the level mandated by the FIM (Federation Internationale de Motocyclisme), which governs international motorcycle competition. Currently, sound limits for amateur motorcycle competition are 99 dB(a) for closed-course competition and 96 dB(a) for cross-country racing."

Doesn't define how and where to measure the sound from - but gives at least a number to shoot for...