my wife stopped by the LBS mid-ride on Sunday because something in her drivetrain was making a clicking noise. The mechanic did some diagnostics on her bottom bracket (sort of standing on one pedal while rocking the bike from side to side), then spun the wheels, raised his eyebrows, and immediately went to his bench to grab some kind of tool. He stuck the tool somewhere on the left side of the front & rear hubs, and within a few seconds said "try that"
"What did you just do?" my wife asked.
"Tightened your hubs" he replies.
Her ride home was uneventful...but yesterday she notices (in addition to the fact that the clicking noise is still present!) that the rear wheel isn't spinning well at all. Feels like the brakes are on, even though she confirmed neither pad is touching the rim.
Is it possible this sensation of the wheel not spinning freely is due to the mechanic having tightened the hub too much?
And if so, what do we need to know in order to loosen the hub (slightly)? Wheels are Mavic Ksyrium Elites. What tool is required, & is there an easy explanation of what's involved? (I checked the Mavic website but it seemed rather barren.)