Next day I wiped down the rotor with alcohol and it looked clean but when I test rode it, same honk. A second cleaning didn't help either. So this morning I took off the rear wheel and the pads were not only sticky, they were worn down to the limit. Luckily I had some new pads and after cleaning the area around the rear forcellina I changed them: honk fixed. I've had brake pads contaminated by brake fluid (or mineral oil) before but this is the first time with sports drinks. It's a jungle out there.
|Worn pad left, new pad right|
|New pads installed|