Rule is in the GCR:
E.15.b of the F500 rules:
"Any exhaust pipe(s) may be used (unless otherwise specified), provided they
meet a sound limit of 92db on the "A" scale measured fifty (50) feet behind
the vehicle, with the engine running at a steady 4,000 RPM, without load.
Maximim exhaust length behind the rear axle centerline is twenty-four (24)
inches. It is the intent of this rule that the exhast pipe includes the
exhaust manifold."
-----Original Message-----
From: owner-autox@autox.team.net [mailto:owner-autox@autox.team.net]On
Behalf Of Rocky Entriken
Sent: Monday, September 16, 2002 1:28 PM
To: Mark Sirota; Mark J. Andy; Nomad Trash
Cc: autox@autox.team.net
Subject: Re: Forwarded: clarifications to FM exhaust protest
Where is that 24" rule (Solo rulebook or is it a GCR F500 rule?) -- and
couldn't it be amended in the Solo book to include language so that an added
muffler does not count in that measured length? Typically, exhaust length
rules exist in road racing so pipes at head-height don't become a hazard to
fellow racers -- not an issue in Solo.
--Rocky Entriken
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