phantom knock diagnostics please
Posted 24 April 2012 - 04:58 PM
Posted 24 April 2012 - 05:24 PM
BMW K1300R is my new girlfriend.
Posted 28 April 2012 - 03:24 PM
Could it be related to the front floating rotors?
Turns out this hard to diagnose knock was related to the floating rotors. I realized I had really bad drag on the front wheel and upon inspection noticed that my left rotor was not true. I managed to pry it back into a better state of true and, low and behold, my knock is gone! Hooray! Happy day my VFR purrs as it should.
Posted 29 April 2012 - 07:29 PM
Curious-- was there no pulsing at the lever?
I never did feel it anywhere in the bike. One of the "ah hah!" moments that clicked within my brain and helped me realize my brakes may be the culprit was that the brakes seemed a bit "grabby" when I did apply them. Rolling along there was no twitch in the lever but once I put the squeeze on, there was a notable sticky spot, now it's obvious, where the rotor was rubbing. I'm beyond ecstatic that the knock is gone and that my sleuthing was rewarded with a no cost solution. I'm getting a bit of front brake squeal now but I think it's safe to assume that the pads are unevenly worn and I'll address a more thorough brake inspection at the next major over overhaul interval, which is 1600 miles away, or right around the corner. I'm obsessed with my new bike!