On Friday whilst commuting my bike started to vibrate and make a noise when free wheeling at speed above 20mph. I did not have time over the weekend to look at it but today I had to stay at home ofr the burglar alarm people so carried out a full investigation and clean up of the bike.
I took the freehub apart and found the pawls and teeth of the freehub body looked ok, though the springs may have felt a bit weak. cleaned it up, bit of light teflon grase and the dam thing still does it when I spin it up fast when on the workstand. Oh well off to the LBS with that I have exhaused my experise on that. I had to move tyre and cassette onto a spare wheel so I can use it tomorrow.
I then investigated my right pedal as I got the odd creaking noise from it, Oh thats simple I thought its wobbly ( Speedplay pedal) I'll just tighten it. turned out it was not the pedal. The metal thread insert in the carbon crank was coming adrift. On googling I find this is fairly common on FSA K Force Lights. I bought them secondhand 5 years ago so cant moan too much. I had 3 cranksets hanging around, 2 were too long ( 172.5) but found a nearly brand new Shimano 170mm but in silver that came off my wifes bike. Luckily I had BB bearings to suit. Didnt like the 50/34 rings so put the 52/36 off my old crank, then decided chainring really was too worn so put a new one I had bought a while ago on. See comparison below. Finally the bike is ready but looks a bit wierd with a mainly black bike with silver crankset and black chainrings.