Knocking sound???

Prometheus7 said:

I have a knocking sound coming from my drivetrain when it
is under stress up a hill and I'm going slow, 9 - 10 mph.
I can't pin it down. It doesn't happen freewheeling, just
when pedaling. It is not a cyclical knock, but rather
irratic. I have Ultegra components. Anyone heard this.
Someone said it could be a loose cassette, but we check
that. Other thoughts? 5000 miles on the equipment.

Knock-knock.

Who's there?

9-10.

9-10 who?

9-10 mph uphill is SLOW?

Bill "worn out chain starting to skip?" S.

"Prometheus7" <[email hidden]> wrote in message
"]news:[email hidden]...

Quoted message said:

I have a knocking sound coming from my drivetrain when it
is under stress

up

Quoted message said:

a hill and I'm going slow, 9 - 10 mph. I can't pin it
down. It doesn't happen freewheeling, just when pedaling.
It is not a cyclical knock, but rather irratic. I have
Ultegra components. Anyone heard this. Someone said it
could be a loose cassette, but we check that. Other
thoughts?

5000

Quoted message said:

miles on the equipment.

BB. Remove it, clean it, the BB threads on the shell and
cartridge, grease it all up real nice, and put it all back
together. If you have 5K on the equip and you've never done
this or had it done before, then... wow. You've done well.

Pretty sure that'll fix the knock.
--
Marty

Quoted post said:

Originally posted by Prometheus7
I have a knocking sound coming from my drivetrain when it is
under stress up a hill and I'm going slow, 9 - 10 mph. I
can't pin it down. It doesn't happen freewheeling, just when
pedaling. It is not a cyclical knock, but rather irratic. I
have Ultegra components. Anyone heard this. Someone said it
could be a loose cassette, but we check that. Other
thoughts? 5000 miles on the equipment.

Thanks,

David

No instant fix ideas, but you have the idea by eliminating things.
If you can temporarily switch out a rear wheel and the sound stays the same... you've eliminated one possible source. You continue this way and reference the following 2 articles for help:

<http://www.chainreaction.com/noises.htm>

<http://www.parktool.com/repair_help/creaking_and_squeaking.shtml>

another thing to try is see if it happens only seated or when standing..... to help eliminate saddle rail interface and seat post/clamp interface.

First thing you should do is see if the crank bolts
are loose.

If not, do that BB fix already described. Although if you
have an Ultegra that has been properly installed, it
shouldn't knock or complain even after 5K miles. Perhaps it
just came a bit loose. The cheaper cartridge BBs on the
other hand aint good for much. I think they are made of
plastic, chalk and hope.

Robert

david-<< I have a knocking sound coming from my drivetrain
when it is under stress up a hill and I'm going slow, 9 - 10
mph. I can't pin it down. It doesn't happen freewheeling,
just when pedaling. >><BR><BR>

Loose or not enough grease in the BB shell and left cup, or
the BB is history.

Loose cogset.

Pedal noise.

Chainring loose.

Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St.
Boulder, CO, 80302
(303)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali
costruite eccezionalmente bene"

it's toast. throw it off a cliff!

On 28 May 2004 09:51:38 -0700, [email hidden] (g.daniels) may have

Quoted message said:

it's toast. throw it off a cliff!

Toast should not be flung off a cliff. Toast is flung in a
darkened room pursuant to the utterance of the cue phrase
during the dinner scene.

This message is brought to you as a public service by the
Committee to Obfuscate Normality by Furthering Usefully
Spurious Eccentricity.

--
My email address is antispammed; pull WEEDS if replying via
e-mail. Typoes are not a bug, they're a feature. Words
processed in a facility that contains nuts.

Werehatrack said:

On 28 May 2004 09:51:38 -0700, [email hidden]

(g.daniels) may have said:

it's toast. throw it off a cliff!

Toast should not be flung off a cliff. Toast is flung in a
darkened room pursuant to the utterance of the cue phrase
during the dinner scene.

Be careful in that darkened room. Make sure you're armed
with a grue gun.

Quoted message said:

This message is brought to you as a public service by the
Committee to Obfuscate Normality by Furthering Usefully
Spurious Eccentricity.

Does CONFUSE have an address to which I can write to join
up?
--
Rick Onanian

Rick Onanian said:

Be careful in that darkened room. Make sure you're armed
with a grue gun.

did i mention i'm a huge infocom fan?

Quoted message said:

up

You have moved into a dark place. It is pitch black. You are
likely to be eaten by a grue.

Quoted message said:

wait

Oh, no! You have walked into the slavering fangs of a
lurking grue!

**** You have died ****

Now, let's take a look here... Well, you probably deserve
another chance. I can't quite fix you up completely, but you
can't have everything.

Forest This is a forest, with trees in all directions. To
the east, there appears to be sunlight.

Quoted message said:

--
david reuteler [email hidden]

On 28 May 2004 21:34:27 GMT, David Reuteler <[email hidden]>

Quoted message said:

Rick Onanian said:

Be careful in that darkened room. Make sure you're armed
with a grue gun.

did i mention i'm a huge infocom fan?

I wonder if there's a program to run those games on
Palm PDAs.
--
Rick Onanian

Rick Onanian said:

I wonder if there's a program to run those games on
Palm PDAs.

killer app for palmos, imo.

palmsource.comgames ifOpen ↗

i use frotz (my pda is ancient), PalmPilotFrotz on the pda
and frotz-2.32 on my unix box. i grabbed the infocom zcode
files from an activision cd-rom tho i think most of them are
free now. i can't get to google or i'd tell ya where.
--
david reuteler [email hidden]

On 28 May 2004 22:14:20 GMT, David Reuteler <[email hidden]>

Quoted message said:

n my unix box. i grabbed the infocom zcode files from an
activision cd-rom tho i think most of them are free now. i
can't get to google or i'd tell ya where.

If I spend long enough searching my old CD-Rs and floppies,
the infocom zcode files (and a bunch of others too) will
turn up, as well as players for a few different operating
systems...
--
Rick Onanian

Quoted message said:

I have a knocking sound coming from my drivetrain when it
is under stress up a hill and I'm going slow, 9 - 10 mph. I
can't pin it down. It doesn't happen freewheeling, just
when pedaling. It is not a cyclical knock, but rather
irratic. I have Ultegra components. Anyone heard this.
Someone said it could be a loose cassette, but we check
that. Other thoughts? 5000 miles on the equipment.

Thanks,

David

In the years I worked in bicycle repair shops, the knocking
sound you describe was always caused by a tight or frozen
chain link.

Quoted post said:

Originally posted by adamyork
>I have a knocking sound coming from my drivetrain when it

Quoted message said:

is under stress up a hill and I'm going slow, 9 - 10 mph. I
can't pin it down. It doesn't happen freewheeling, just
when pedaling. It is not a cyclical knock, but rather
irratic. I have Ultegra components. Anyone heard this.
Someone said it could be a loose cassette, but we check
that. Other thoughts? 5000 miles on the equipment.

Thanks,

David

In the years I worked in bicycle repair shops, the knocking
sound you describe was always caused by a tight or frozen
chain link.

The knocking sound may be a frame fault if you are riding Aluminium....

Something inside the frame may have busted and only clunks when under pressure.... going up hills and clunks is a new sympton of frame fault according to my local dealer....

GIOS & ANCHOR frames are main offenders... don't always blame the components...

Maybe worth investigating.....

its toast. into the dump.