With immediate effect from 21/5/2010.
* Silencers become a marked part at Technical control , an addition to ACU Championship Regulations 6.1.12
* When machines are Sound tested at Tech Control – only machines that pass this test are allowed to Start the event.
Current noise level : 94 dBA measured at 11 m/sec mean piston speed.
THE PISTON STOKE OF ENGINE IN MILLIMETERES MUST BE PERMINANTLY AND PROMINANTLY MARKED ON THE ENGINE
* During the whole event ( including before entering the Parce Ferme at the end of each day) the Sound Control Officer may check any motorcycle.
* If a machine is checked during the event and the sound level exceeds 2 dB/A above the maximum allowed, the rider will receive a penalty of 60 sec’s
* At the end of the lap at service control, a rider who has incurred this penalty will be allowed to change the silencer , but must inform the Check personnel that they have done so – and the silencer is liable for re-marking.
No extra time shall be granted to a rider to change a silencer it must be accomplished in normal service time.
* At any subsequent Sound test during that day a rider whose machine fails a sound test for the second time, by exceeding the maximum level by more than 2 dBA will be disqualified from that day.
In Addition:
When random Sound tests are conducted during the event, it will be recommended that they be situated in a suitable place e.g before a Service check, and if possible before a check where it is envisaged riders will have ample time
A rider selected for a random test can claim a 10 min delay as per 2.4 Enduro ACU Regulations, and must wait 10 mins before proceeding, and all subsequent checks of the day will be plus 10 mins.
Alternatively, a rider may, if they wish, proceed immediately after the Sound test without waiting any additional time, and revert to their standard schedule , with no subsequent delay at checks
This decision will rest entirely with the rider, and any rider who chooses to do so must sign the declaration provided by the Sound control officers to this effect.
ACU TRIALS & ENDURO COMMITTEE 20/05/10