Topic: Anyone experience a wierd harmonic noise around 60mph?

[zoo mob]

Cant describe it too well, but at about 62mph, I hear this "wooo,woooo,wooo,wooo" noise. Not crazy loud, kind of harmonic, and seeminglt no other symptons, shaking etc.? Any thoughts?

[1timduke]

Are you riding in a 35 zone?

Sorry, couldn't resist.

Do you have a fairing or anything else fitted?   Maybe something as simple as a sticker starting to peel off something? (Or duct tape if it's my bike).   I had a leaf under the wiper in my old vw bus, couldn't figure out for $#!t what the damn humming was, until it rained and it flew off.

-Tim

[Frankenkit]

I have a sound like that except I hear it sometimes when I'm slowing down.  sounds like a person saying 'woooo' or, at a stretch, someone playing a single, held note on a flute.  It's weird.

[zoo mob]

Yeah, definitely not a sticker or anything, and no fairing. The noise has been around since last season. Who knows....

[Hush]

It's me!!!
Na I'm thinking something like wind rushing through the fins or wiring loom at a certain speed especially between the forks, had a whistle like that on my old T350.

[seaweb11]

I'm no expert on this, but I get some of it.

(Everything) has a tone at which it will vibrate given the correct stimulus......ie: the rpm of your bike.  It's a tuning fork thing.
My Tracy had one recently, turned out it was the front fender, get to the right frequency and it went nuts. Fixed that one

On the track the other day after a session a guy came up to me and asked if I heard any strange noises the last couple of laps?  I had heard and felt something on the straight aways.......He said when he was within 3 ft of my rear tire on the straight both engines matched tones perfectly and there was a weired sound and vibration in his bike.

Won't hurt anything

[Hush]

That would be the anti-passing unit you fitted Seaweb, good thinking so you get plenty of open track to yourself.