XBR500: High pitch noise at 80km/h

[guest1703]

Hi all
Hope someone can help me with this. When I reach 80 km/h on my XBR500, most times it is resulting in a high pitch noise, sounds like a electronic noise and not parts touching each other. It stops when I slow down to 30 km/h. It sounds like it is coming from the front part of the bike...

Anyone having an idea what this could be?

Thanks a lot
Dennis

[guest1405]

I had this problem some years ago with one of my XBR's and although the memory is't so good I seem to recall it turned out to be an air leak on the carb inlet. Worth looking into anyway.

[guest1247]

Hi Dennisnn, Ref the noise from the front area of your bike. Just a thought, when the noise is apparent, have you tried operating the front brake..albeit slightly..? I have come across front pads that seem to cause a certain noise / resonance at certain speeds, and the "buzzing" that emenated from the caliper was certainly hard to pin-point. Let us know how you get on. Regards... Tony

[blew]

Tight chain???;

[guest1703]

I had this problem some years ago with one of my XBR's and although the memory is't so good I seem to recall it turned out to be an air leak on the carb inlet. Worth looking into anyway.

"Unfortunately" it does not seem to have a leak :/

[guest1703]

Hi Dennisnn, Ref the noise from the front area of your bike. Just a thought, when the noise is apparent, have you tried operating the front brake..albeit slightly..? I have come across front pads that seem to cause a certain noise / resonance at certain speeds, and the "buzzing" that emenated from the caliper was certainly hard to pin-point. Let us know how you get on. Regards... Tony

I have tried this, but still does not seem to help the problem...

[guest1703]

Tight chain???;

Chain is perfectly adjusted

[SteveC#222]

My XBR developed a high pitched buzz/rattle once and it turned out to be the tax disc holder ( mounted on one of the headlamp bolts) that was just vibrating against the fork stanchion at a certain speed - there was a tiny gap between them, but not enough to stop it buzzing and the XBR does have a vibration patch at around 50mph(80kph).  Just a thought.