What produces this noise?

Derk wrote:
Hi,

When riding my new bike, I hear a sound as if you hit a spoke gently
with another spoke that you hold in your hands. I only hear it when
accelerating or when I'm out of the saddle sprinting.

I would say it's either the chain or the D-A 9S bottom bracket.

Does anyone recognize this sound?

I thought someone else would suggest it, bit no one has: is your shoe
ticking the FD cable end? (Rear tire can also do it in certain gear
combos.)

Bill "just back from a root canal" S.

wrote:
Chain or BB. Had the same problem, checked the BB
fine. Checked the chain it had stretched way out there. 12 inches
was 12 1/4 pin to pin. Changed the chain no funny sounds or that
dame vibration felt in your feet.

There must be groups devoted to dame vibrations felt in feet.

Bill "Crazy you so crazy" S.

"S o r n i" wrote in message

wrote:
Chain or BB. Had the same problem, checked the BB
fine. Checked the chain it had stretched way out there. 12 inches
was 12 1/4 pin to pin. Changed the chain no funny sounds or that
dame vibration felt in your feet.

There must be groups devoted to dame vibrations felt in feet.

I think it's illegal in Texas.

--

A: Top-posters.
Q: What is the most annoying thing on Usenet?

wrote:

The rest of the spokes aren't tight either or the natural trueness of
a new rim would have been lost. You've got an extremely loose wheel.

Which I didn't build ;-) It was a rough job by whatever monkey they
employ at the LBS these days, but I just couldn't be bothered to do it
myself last time [1]. It seems OK after a bit of remedial work, and I
don't think the rim is damaged.

[1] old rim + new 9-sp hub = tedious dismantling job before rebuild.

Derk wrote in message ...
Zog The Undeniable wrote:

I had precisely this yesterday. It was a single loose spoke chafing at
the crossing point with the adjacent spoke, and the noise came and went
depending on whether I was pedalling hard or leaning to one side.
I ruled that out, because I have Ksyrium SSC-SL wheels, so the spokes don't
touch.

Interesting thing today: an amateur rider brought his Ksyrium wheel to my
LBS where I come too often, but that aside: one of the spokes just came out
of the hub side. Nothing broke, though. A sales rep from Mavic was there
too and said this sometimes happens when people make very abrupt moves
during races.

That's comical. "There's nowt wrong with our wheels, you just ain't using
them right."

Trevor

wrote in message ...
someone writes:

When riding my new bike, I hear a sound as if you hit a spoke
gently with another spoke that you hold in your hands. I only hear
it when accelerating or when I'm out of the saddle sprinting.

I would say it's either the chain or the D-A 9S bottom bracket.

Does anyone recognize this sound?

I had precisely this yesterday. It was a single loose spoke chafing
at the crossing point with the adjacent spoke, and the noise came
and went depending on whether I was pedalling hard or leaning to one
side.

How one spoke came loose but the wheel stayed true, I'll never know.

The rest of the spokes aren't tight either or the natural trueness of
a new rim would have been lost. You've got an extremely loose wheel.

Goes to show that spokes need not be 'tight' for a wheel to function
correctly.

Trevor

Marty wrote in message ...

2. Another noise that I cannot seem to get rid of comes from that nipple
eyelets in the open pro rim. I've tried oil in the one that makes noise,
but that is only temporary. I'm thinking of trying grease.

I think I've seen a thread on this issue with Open Pros. Are they any
other
solutions for this one?


I wonder whether this is the ferrules being stressed beyond their design due
to excessive spoke tension. My open4 ferrules seem to be over engineered in
that the steel used is quite thick for the job required. Should the ferrule
not be seated equally on top and bottom of the rim, it will move as the
tension in the spoke varies. A thinner ferrule would allow deformation upon
assembly so the ferrule transfers load via both rim faces.

Trevor

wrote in message The occasional faint noise troubling
Derk might be a magnet
set too close to a pickup, as another poster has already
suggested. I hear a noise like that sometimes and find that
fiddling the sensor attached by nylon ties to the fork leg
usually makes it go away. In my case, no sprinting or
accelerating is involved, just leaning into corners.

Evidence of spoke bending.

Trevor

Derk hatespam writes:

Interesting thing today: an amateur rider brought his Ksyrium wheel
to my LBS where I come too often, but that aside: one of the spokes
just came out of the hub side. Nothing broke, though.

I thought we were all amateur riders although there are some
professional racers. I'm curious what you mean by "amateur rider"?
So what allowed the spoke to "come out of the hub"? Did the spoke
or the flange break?

A sales rep from Mavic was there too and said this sometimes happens
when people make very abrupt moves during races.

Did he say hub failure is to be expected? If so, don't buy these
wheels. Wheels components are not supposed to break other than to
collapse a rim if the wheel experiences great side loads. Other than
that, wheel parts should not break even in a crash. The reason for
this is that suckling a wheel does not increase spoke tension
significantly so hubs have no excuse to break.

Jobst Brandt

Trevor Jeffrey wrote:

Derk wrote in message ...
Zog The Undeniable wrote:


I had precisely this yesterday. It was a single loose spoke chafing at
the crossing point with the adjacent spoke, and the noise came and went
depending on whether I was pedalling hard or leaning to one side.

I ruled that out, because I have Ksyrium SSC-SL wheels, so the spokes don't
touch.

Interesting thing today: an amateur rider brought his Ksyrium wheel to my
LBS where I come too often, but that aside: one of the spokes just came out
of the hub side. Nothing broke, though. A sales rep from Mavic was there
too and said this sometimes happens when people make very abrupt moves
during races.

That's comical. "There's nowt wrong with our wheels, you just ain't using
them right."

Trevor

When I view this post, there is no differentiation between Trevor's
original text and Zog's quoted text.

--
Tom Sherman