Date: Thu, 28 Nov 2002 23:01:27 +0100 From: "Johan Beikes" <j.beikesnopsamdoo.nl> Subject: Re: c900 harmonic droning?
Lance, Another idea hit my mind: what about the exhaust system. Could it be too tightly mounted somewhere, so that noises of the exhaust are passed on to the chassis? Worth to look at, before thinking of more expensive fixes, i would think. Johan "Lance Morgan" <alancemornopsamo.com> wrote in message news:2a52f3e9.0211241647.193dd2ffnopsaming.google.com... > I recently purchased a 91 900S (briefly had a 86 900T years ago), and > am really enjoying it. > > I've noticed something I'd appreciate comments on: a harmonic type > droning - always starting at 70 mph up to at least 85 mph, and have > also sometimes heard it ~ 45 mph in 3rd, albeit a slightly different > tone. > > The noise is moderate in pitch and, at high speed, has a repetitive > frequency of less than 1 second. It reminds me of riding in a twin > engine airplane > > The noise completely abates when I push the clutch in, coasting at > high speed. > > Probable cause? > > > Thank you, > > Lance > 5 spd 3dr 125K