squeaking BB

Recently, my shimano 7700 BB developed squeaking noise when I stop
pedalling when cruising? Anybody knows why? It has about 20000km on it
now.

On Oct 15, 9:27*pm, goodone wrote:
Recently, my shimano 7700 BB developed squeaking noise when I stop
pedalling when cruising? Anybody knows why? It has about 20000km on it
now.

Not sure how it can 'squeak' when you aren't pedaling. BUT take it all
apart, clean, lube well including the spindle. These are kinda noisey.

Qui si parla Campagnolo writes:

On Oct 15, 9:27Â*pm, goodone wrote:
Recently, my shimano 7700 BB developed squeaking noise when I stop
pedalling when cruising? Anybody knows why? It has about 20000km on it
now.


Not sure how it can 'squeak' when you aren't pedaling. BUT take it all
apart, clean, lube well including the spindle. These are kinda noisey.

Maybe there's a mouse in it running like crazy?

Can you lube sealed units?

On Oct 16, 6:21*am, Qui si parla Campagnolo
wrote:
On Oct 15, 9:27*pm, goodone wrote:

Recently, my shimano 7700 BB developed squeaking noise when I stop
pedalling when cruising? Anybody knows why? It has about 20000km on it
now.

Not sure how it can 'squeak' when you aren't pedaling. BUT take it all
apart, clean, lube well including the spindle. These are kinda noisey.

I agree, but if you are both lazy and poor and don't want to do repair
or have someone else repair it, get some liquid grease in spray bottle
or some oil. spray some so that it can work itself down the axle into
the the seals and bearings. I bet that it will take care of the
problem. Yet, you should do a bb overhaul every so often.

On Oct 16, 6:25*am, wrote:
Qui si parla Campagnolo writes:

On Oct 15, 9:27*pm, goodone wrote:
Recently, my shimano 7700 BB developed squeaking noise when I stop
pedalling when cruising? Anybody knows why? It has about 20000km on it
now.

Not sure how it can 'squeak' when you aren't pedaling. BUT take it all
apart, clean, lube well including the spindle. These are kinda noisey.

Maybe there's a mouse in it running like crazy?


If this is the case, use a cat.

On 10/15/2008 8:27 PM goodone wrote:

Recently, my shimano 7700 BB developed squeaking noise when I stop
pedalling when cruising? Anybody knows why? It has about 20000km on it
now.

Standing by to see how this works out. Last month when the fellow asked
how frequently he should replace his seat post, I fully expected a round
of laughter. Didn't happen 'cause it turns out that some riders have had
seat posts break.

This question has to be an absurdity, fershure. No moving parts = no
squeak, right? But I've learned not to be hasty about such things.

--
Mike "Rocket J Squirrel"

" Est et fideli tuta silentio merces." - Horace

On Wed, 15 Oct 2008 20:27:01 -0700 (PDT), goodone
wrote:

Recently, my shimano 7700 BB developed squeaking noise when I stop
pedalling when cruising? Anybody knows why?

A bottom bracket that isn't moving shouldn't make a sound. Check to
see that it isn't your saddle. Try introducing a few drops of oil at
each place where the rails insert into the saddle's shell.

"John Dacey" wrote in message
...
" Est et fideli tuta silentio merces." - Horace

On Wed, 15 Oct 2008 20:27:01 -0700 (PDT), goodone
wrote:

Recently, my shimano 7700 BB developed squeaking noise when I stop
pedalling when cruising? Anybody knows why?

A bottom bracket that isn't moving shouldn't make a sound. Check to
see that it isn't your saddle. Try introducing a few drops of oil at
each place where the rails insert into the saddle's shell.

He didn't say, but if he stops pedaling at TDC/BDC and puts all his weight
on the lower pedal, he could be getting some creaking from the axle/crankarm
interface.

On Oct 16, 6:25*am, wrote:
Qui si parla Campagnolo writes:

On Oct 15, 9:27*pm, goodone wrote:
Recently, my shimano 7700 BB developed squeaking noise when I stop
pedalling when cruising? Anybody knows why? It has about 20000km on it
now.

Not sure how it can 'squeak' when you aren't pedaling. BUT take it all
apart, clean, lube well including the spindle. These are kinda noisey.

Maybe there's a mouse in it running like crazy?

Can you lube sealed units?

Not actually putting any grease into the bearings them selves but you
need grease between the cups and frame(Prep that frame!!), onto the
spindle, between the rings and the crank spider, onto the chainring
bolts. Torque wrench required also.

Peter Chisholm wrote:

Recently, my Shimano 7700 BB developed squeaking noise when I
stop pedaling when cruising? Anybody knows why? It has about
20000km on it now.

Not sure how it can 'squeak' when you aren't pedaling. BUT take
it all apart, clean, lube well including the spindle. These are
kinda noisy.

Maybe there's a mouse in it running like crazy?

Can you lube sealed units?

Not actually putting any grease into the bearings them selves but
you need grease between the cups and frame (Prep that frame!), onto
the spindle, between the rings and the crank spider, onto the
chainring bolts. Torque wrench required also.

If it is squeaking, and it is the BB, then you have a serious problem
in that the bearing cup is moving in the frame. Grease can only
obscure that problem but the motion will not go away. That would only
be "sweeping i under the rug" so to speak.

Bicycles have been fraught with such design problems since the
beginning. Pedal attachment, head bearing fretting, quill stems
failing, pedal cranks designed as "in plane" levers ignoring their
torsion and lateral bending, rear hub axle overhang on the right side
causing chain tension to break axles and dropouts, Cinelli internally
lugged fork crowns whose transition to fork blades could not be
feathered, thus causing fork fatigue failures...

Now we have the outboard BB bearings that wants to fret more than
ever. The old inboard ones did which the need for a left hand thread
on the right cup demonstrates.

Jobst Brandt