A while ago I posted about a slightly ticking headset when rocking the bike,
I've played around a bit and found that extra preload does help but I'm not
sure whether this helps or not.
Tightening up the preload some more does seem to remove the ticking noise
but I worry about excess load on the bearings and cups.
The tick is slight but I worry that it's a sign of movement. With the top
cap off it seems that it might be slight movement in the steerer moving the
compression ring slightly (the ticking may even be suction of the grease).
The hole in the centre of the bearing cartridge is wider than the steerer
tube and the angled surface of the compression ring engages the cartridge,
sort of an upside down crown race I suppose. My guess is that although I can
preload the bearings to a point where I can not longer feel any movement at
the cronw race, there might be a small amount of movement in the compression
ring in the top cup, presumably extra preload pushes the top cover down
harder and holds the ring in place. It's just that this point appears to
require significantly higher preload that it needs to remove place from the
crown race and presumably places extra load on the lower bearings and cup.
The installation isn't new, I've been riding it for 2 1/2 years and am still
on the same set of bearings so things must be pretty good.
I've had the ticking noise once before when the bike was set up in the bike
shop (I'm guessing that they stopped preloading the headset when play
dissapeared from the crown race) but later when the headset was cleaned and
grease at the shop and readjusted the ticking noise wasn't there.
I'd moved my stem and cleaned and regrease the headset and now find myself
unsure whether to leave the headset at a point where I can't feel any
movement but can hear the slight ticking or to tighten it all up so there's
no ticking at all.
The bearings are in sealed cartridges an so presumably more difficult to
bind that loose balls or balls in retainers. I'm I safe running extra
preload if the steering is still smooth (which it is) will I risk damaging
the headset cups or frame, should I use less preload (but still no sign of
play) or, am I being pointlessly concerned and fussy about nothing?