I know this is like asking to fix the squeek that only happens over 30mph when the left wheel goes over a bump.........
......but here goes
Three times now I've experienced this, but can't figure out yet what this problem could be.
First time I'm decelerating from 55 fairly slowly and suddenly there's a 'reedy' sound, reminds me of when some straw got stuck between my bicycle wheel and fender as a kid. There's too much going on (gotta turn across traffic into a lot with cars & people) for me to pay much attention and by the time I've stopped, so has the sound. The ride back home was quiet.
2-3 days later, I'm going much slower, around 30mph decelerating and it just starts, then stops 10-20 seconds later.
4-5 days after that, at the same place as the first, although this time I have the opportunity to tap the rear then front brake, no difference, then I begin to pull in the clutch and the noise suddenly stops. I don't think I got the clutch fully squeezed shut either.
It's hard to hear above the noise of the wind, I can't tell if it's front/back/left or right. There's no associated vibration with the noise, acceleration is good, bike has been up to 75mph, climbs up hills nicely.
Changed oil about 150mi ago, 10w40 castrol. Chain lubed/adjusted maybe 200,300mi ago. Clutch cable adjusted. Shifts easily up/down/neutral.
Since I got this bike it does have one weird clutch characteristic I've never felt before. When pulling away very slowly in 1st, once the bike is moving and the clutch reaches the end of the friction zone, it seems to jump the last 10-20% meaning it just goes from slipping slightly to fully engaged.
Any ideas welcome.