Buzzy Rims on Mavic Open Pro -- Problem solved

Simonb said:

It turns out that the annoying rattly, buzzy sound was coming from
the pin across the weld coming loose. I drilled a tiny hole to one
side of the pin and squited some UHU in there. Hung the wheel up
overnight so the glue settled and dried around the pin, and -- hey
presto -- silent running once more.

Could you describe more precisely where you drilled the hole?

thanks
~PB

YOU drilled a hole in the RIM..........

(Alf Engers Springs to Mind )

I might try that on my COSMICS...they seem to produce a humming noise also

Just of to get the black & decker... report back later

who know's after this I might get my 1st sub '50' ride

D@vo

the bigger the ring the more it hurts

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

Quoted message said:

It turns out that the annoying rattly, buzzy sound was coming from the pin
across the weld coming loose. I drilled a tiny hole to one side of the pin
and squited some UHU in there. Hung the wheel up overnight so the glue
settled and dried around the pin, and -- hey presto -- silent running once
more.

Davo said:

YOU drilled a hole in the RIM..........

Have you noticed that they already have a few holes drilled in them? ;-)

~PB

Pete Biggs said:

Could you describe more precisely where you drilled the hole?

Find the weld and notice that either side of it, on the tyre side, there are
the two tips of the pin recessed in two dimples. I drilled a 2mm hole about
5mm to the side (left as you look at it with the rim label oriented
correctly) around the rim from either of the dimples. I put quite a lot of
glue in and then bunged the hole to stop it dripping out and then hung the
wheel up to dry. Note that I drilled two holes: the first one was to the
right of the dimples, and it didn't work -- something inside the rim must
have prevented the glue from getting where it had to go, or the pin was not
loose on that side.

Davo said:

YOU drilled a hole in the RIM..........

Yes, I put two 2mm holes in the rim from the tyre side. Like Pete says, the
rim has thirty-two 5mm holes in it already already so I doubt that I've
weakened it any.

Simonb said:

Davo said:

YOU drilled a hole in the RIM..........

Yes, I put two 2mm holes in the rim from the tyre side. Like Pete
says, the rim has thirty-two 5mm holes in it already already so I
doubt that I've weakened it any.

Wot, no valve 'ole? ;-)

- - - - - - - - - -
Thank you for the extra detail in other reply. I might try that if ever I
have an OP rim that's too loud to bear. Usually any clicking or buzzing
is inaudible once up to speed* or out on roads with wind or traffic.

* Centrifugal force holds the loose bits still.

~PB

Pete Biggs said:

* Centrifugal force holds the loose bits still.

I can hear a thousand physicists screaming 😄.

Doki said:

Pete Biggs said:

* Centrifugal force holds the loose bits still.

I can hear a thousand physicists screaming 😄.

Okay dokay doki dookey, *centripetal* force then. Is that right?

~PB

Doki said:

What we think of as centrifugal force is actually
momentum. But I'm not 100% about all that. I couldn't give a toss...

Ahem. Force is rate of change of momentum. Ahem. Thank you.

Tony

Pete Biggs said:

Doki said:

Pete Biggs said:

* Centrifugal force holds the loose bits still.

I can hear a thousand physicists screaming 😄.

Okay dokay doki dookey, *centripetal* force then. Is that right?

Centripetal force is the force that pulls whatever you're spinning towards
the centre of the circle. What we think of as centrifugal force is actually
momentum. But I'm not 100% about all that. I couldn't give a toss...

Tony Raven said:

Doki said:

What we think of as centrifugal force is actually
momentum. But I'm not 100% about all that. I couldn't give a toss...

Ahem. Force is rate of change of momentum. Ahem. Thank you.

You're most likely right. I can't be arsed to check and can't remember much
physics. The sensation of whatever it is your spinning (say a weight on a
bit of string) pulling outwards, is actually the weight trying to carry on
in a straight line due to momentum. I hope.

in message <[email hidden]>, Pete Biggs

(') said:

Doki said:

Pete Biggs said:

* Centrifugal force holds the loose bits still.

I can hear a thousand physicists screaming 😄.

Okay dokay doki dookey, *centripetal* force then. Is that right?

The thousand physicists can scream and scream until they are sick. If
they have problem with language which describes accurately what
ordinary people observe in everyday life, it's their problem and no-one
else's.

What holds the loose bits still is not a centripetal force, it's inertia
- the bits want to fly off but the wheel won't let them, so they're
pressed up against it. Ordinary people call this inertia a centrifugal
force. Ordinary people are right. Under normal observational
conditions, centripetal forces are just so much handwaving. What you
can observe is not a centripetal but on the contrary a strong
centrifugal force. This may be a by-product of inertia, but that
doesn't make it less real or less observable.

When science has got so refined that it's no longer able to describe
what happens in normal experience, then it is frankly effete and
irrelevant.

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/

;; It appears that /dev/null is a conforming XSL processor.

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

Quoted message said:

The thousand physicists can scream and scream until they are sick. If
they have problem with language which describes accurately what
ordinary people observe in everyday life, it's their problem and no-one
else's.

What holds the loose bits still is not a centripetal force, it's inertia
- the bits want to fly off but the wheel won't let them, so they're
pressed up against it. Ordinary people call this inertia a centrifugal
force. Ordinary people are right. Under normal observational
conditions, centripetal forces are just so much handwaving. What you
can observe is not a centripetal but on the contrary a strong
centrifugal force. This may be a by-product of inertia, but that
doesn't make it less real or less observable.

When science has got so refined that it's no longer able to describe
what happens in normal experience, then it is frankly effete and
irrelevant.

So what do we do?

In this case centrifugal force is a perfectly reasonable shorthand for what
is happening. Any physicist or engineer will know what is implied and can
translate the popular description into a real scientific model -- which in
this case is relatively simple and is based on Newton's Laws of Motion -- a
body will continue at a constant velocity (in a straight line) unless a
force acts upon it.

Its not as if centrifugal force is an explanation based on some form of
suspicion and quackery -- such as it was the little green men that dun it!

T