Buzz at 3800-4000 RPM sounds like plastic ?

[travelinman]

I'm trying to track a buzz that occurs at 3800-4000 rpm on my 04 RT. It sounds like it's coming from inside the right side fairing but I just can't isolate it. It sounds like it's plastic vibrating.

 

Thanks

Allan

[Ken H.]

It sounds like it's plastic vibrating.

It's plastic vibrating.

 

 

But seriously folks... Is it movement/wind induced, or engine vibration induces. I.e. - Can you get it to do it in the garage?

[travelinman]

Engine induced.

Allan

[bmwkid]

For about 3 months I had a buzzing noise from my R1150R that happened only on decell at 3800 to 3500 rpm's. After a lot of trial and error I found the cause.

Under the igntion switch there is a 6mm allen bolt that had backed out about 3mm,the wave washer on the bolt was bouncing around causing a loud buzz. Tighten the bolt noise gone---OH HAPPY DAYS

[travelinman]

Thanks all

[BucksTherapy]

I have the exact same issue on my 02 RT. Can't find the source. Let us know if you find it and I'll do the same.

[Bruce Barrow]

My 99 R1100 RT had a right hand mirror that made buzzing sounds. Tightened up the retainer clips and all is quiet.

 

Bruce

[snod]

The top right bolt on my front fender likes to come loose. Either that, or I don't like getting it tight enough. It has come loose creating a similar sound at least 3 different times. Some thing to check?

[JamesW]

Glad to see this thread as I thought I was the only one that had come to the conclusion that the racket I hear start up around 4500 RPM might be plastic parts rattling. Honest to god it sounds like a thrashing machine at times. I decided that it couldn't be anything serious after a few thousand miles else some kind of major failure would surely have occurred. I am determined to locate the source of this noise as it seems worse the longer I ride. Probly just seems like it as fatigue sets in after 8 or so hours in the saddle in hot weather.