OK let me date myself... Back in old days, pre-1997 at Bridgehampton whe did sound level checks on the race bikes, it was 1/2 redline, 18" from the muffler tip, @ 45 degree angle. If I can remember back that far the limit was like 97db. We ran race cans and sometimes a hollowed out WD40 can hose clamped to the tail pipe... If you spotted a sound cop, you rolled out of the throttle, and then stabbed it again!!! I had a CR500 in a Hawk chassis, and I was told it was the loudest thing out there!!! CR
Chuck Voboril <[EMAIL PROTECTED]> wrote: BTW, I got a complete 1300cc Hayabusa motorcycle exhaust system including Tri-Y header, intermediate pipes and mufflers to study. It is suposed to meet the 80 dB motorcycle noise limit, but that 80 dB is hard to compare to ANYTHING else because the standard says it is measured in NEUTRAL with the motor at barely cracked open throttle holding the motor to a specified low RPM. The mikes are supposed to be aimed 45 degrees to the axis of the bike (aimed from front towards the back on the side) and located very very close to the bike. Chuck --------------------------------- Need a quick answer? Get one in minutes from people who know. Ask your question on Yahoo! Answers. ________________________________ FormulaCar Magazine - A Proud Supporter of Formula 500 The Official Publication of Junior Formula Car Racing Subscribe Today! www.formulacarmag.com or 519-624-2003 _________________________________ _______________________________________________ F500 mailing list - [email protected] To unsubscribe or change options please visit: http://f500.org/mailman/listinfo/f500 *** Please, DO NOT send unsubscribe requests to the mailing list! ***
