ATVMX - Pro Am Production Sound Testing Procedures
EnricoPavia
- March 18 2009
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Competition Bulletin - Pro Am Production Sound Testing Procedures
TO: PRO-AM PRODUCTION NATIONAL CLASS COMPETITORS
FROM: ATVPG
DATE: March 18, 2009
SUBJECT: Sound Test Procedure for Pro-Am Production
Machines entered in the Pro-Am Production division shall have mufflers / silencers which do not exceed 99db(A) measured at half maximum rpm per MIC manual SAE J1287 test at 0.5 meters (20 inches).
A grace period will be allowed for all machines to come into compliance.
By amateur round 3 (Sunset Ridge - Walnut IL.) all machines must meet the sound expectations before they are allowed to compete. Below is the RPM range for the ATV’s in this classification
Can Am DS 450 - 2,950
Honda TRX 450 - 3,750
Kawasaki KFX 450R - 3,750
Suzuki LTR 450 - 3,750
Yamaha YFZ 450 - 3,750
Polaris 450 MXR - 4,250
KTM 450 SX - 4,625
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