- Aug 25, 2009
Ear plugs...!! I have an open face and a Bell retro, no cheek wind protection and at 4krpm in top on highway I'm sure suffering an industrial grade injury
I cant ride under 3k rpm without thinking somethings terminal. I heard a Ducati the other day and to be fair it was worse ticking over with a clattering noise.
Is it just cause things aren't under load ? free play in stuff ? or just the 1950's style ole push rody nature of the universe ?
Some say much of the clatter is caused by the backlash spring on the balancer shaft gear.
As the spring weakens, and allows more lash between the crank gear and clutch basket gear, more noise is generated.
Externally it's difficult to pinpoint the exact cause due to the path that the harmonic takes through the engine and to your ear.
But if you can hear the clatter, then your silencers are too quiet.
I have a Ducati 999, and when the engine is cold the noise coming from the top end of the motor sounds like a thrashing machine.
Ducati now try to cover the top end with body work and such to absorb the noise.
Nature of the beast.