Join Date: Oct 2017
Location: Seattle in the summer and East Cape, Baja in the winter. Perfect!
Cyclic "whir" @ 4800 rpm '13 Wee
Just got back from camping in the Olympic rain forest. Yuck. I am getting a rather loud (audible with earplugs) whirring sound at 4800 on the highway. Rapidly cycles on an off at a steady rate with noise lasting longer than the silence but steady like a metronome.
Lower or higher RPMs and it goes away. Kind of high pitched but not a soprano shriek. Any similar experiences? Is this normal? If not, any idea what causes this? Bike is religiously maintained and has no other issues...