This one go Plunk!

Dave Larrington said:

Actually, it's more a sort of knocking noise, emanating from the rear end of
the Trice. It only does it clonk-clonk-clonk-clonk when power is being
applied, and doesn't do it clonk-clonk-clonk-clonk all the time.

Any guesses?

Just a noise? Can you not feel anything through the pedals?

--
Three wheels good, two wheels ok

www.catrike.co.uk

On 5 Mar, 08:58, "Dave Larrington" <[email hidden]>

Quoted message said:

Actually, it's more a sort of knocking noise, emanating from the rear end of
the Trice. It only does it clonk-clonk-clonk-clonk when power is being
applied, and doesn't do it clonk-clonk-clonk-clonk all the time.

Any guesses?

--
Dave Larrington
<http://www.legslarry.beerdrinkers.co.uk>
Official: Living in a wardrobe can be injurious to one's health
<URL:http://www.timesonline.co.uk/article/0,,11069-
1567961,00.html>

The fact you describe it as a clonk suggests it is something hitting
something else. That it happens only when under preasure suggests
that it is related to tension and/or resistance. I would be looking
at the rear gear mechanism / springs and jockywheels then possibly the
rear wheel hubs/bearings.

You've vastly more experience than I in cycling so I appologise if
this seems a little obvious.

Sniper8052

On Mon, 5 Mar 2007 08:58:12 -0000

Dave Larrington said:

Actually, it's more a sort of knocking noise, emanating from the rear
end of the Trice. It only does it clonk-clonk-clonk-clonk when power
is being applied, and doesn't do it clonk-clonk-clonk-clonk all the
time.

You go a recent shopping receipt from Tescos or Morrisons?
Quick, blame them and claim your repair costs!

--
not me guv

in message <[email hidden]>, Dave Larrington

(') said:

Actually, it's more a sort of knocking noise, emanating from the rear end
of
the Trice. It only does it clonk-clonk-clonk-clonk when power is being
applied, and doesn't do it clonk-clonk-clonk-clonk all the time.

Any guesses?

If it's power on only, then its one of:

1 Bearings
2 Loose cassette (unlikely to go 'clonk-clonk' but can make odd noises)
3 Chain tension pulling the wheel out of square, very slight buckle in
wheel (but if chain tension is pulling the wheel out of square then
either the skewer is loose or the fundamental problem is bearings, see
1 above)
4 Borken spoke. I don't see why a borken spoke should produce special
noises under power, but I don't have much experience of borken spokes.

My money's on bearings.

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

...but have you *seen* the size of the world wide spider?

In article <[email hidden]>, Dave Larrington
[email hidden] says...

Quoted message said:

Actually, it's more a sort of knocking noise, emanating from the rear end of
the Trice. It only does it clonk-clonk-clonk-clonk when power is being
applied, and doesn't do it clonk-clonk-clonk-clonk all the time.

Any guesses?

Loose freehub body? Does it clonk once per crank revolution, once per
wheel revolution, once per chain revolution, some other regular
frequency, irregularly?

In news:[email hidden],
Rob Morley <[email hidden]> tweaked the Babbage-Engine to tell us:

Quoted message said:

In article <[email hidden]>, Dave Larrington
[email hidden] says...

Quoted message said:

Actually, it's more a sort of knocking noise, emanating from the
rear end of the Trice. It only does it clonk-clonk-clonk-clonk when
power is being applied, and doesn't do it clonk-clonk-clonk-clonk
all the time.

Any guesses?

Loose freehub body? Does it clonk once per crank revolution, once per
wheel revolution, once per chain revolution, some other regular
frequency, irregularly?

I would guess once per wheel revolution (when it does it at all). I cleaned
the entire transmission recently and the freehub seemed to be quite happy,
though I didn't take it apart. Perhaps it's something complaining about the
lack of Skog(tm)...

--
Dave Larrington
<http://www.legslarry.beerdrinkers.co.uk>
Mr. Charles Kennedy (Krankieburgh): Would the Prime Minister
care to comment on a report in today's Guardian that he: "arrived
late for a meeting with Jacques Chirac, smelling of alcohol, and
with body language suggesting a total disregard for the rights
of ethnic minorities, lone parents and laboratory animals"?

Dave Larrington said:

Actually, it's more a sort of knocking noise, emanating from the rear end of
the Trice. It only does it clonk-clonk-clonk-clonk when power is being
applied, and doesn't do it clonk-clonk-clonk-clonk all the time.

Any guesses?

Seized/sticking link in the chain?

Chris

Simon Brooke <[email hidden]> wrote in news:g38tb4-h2b.ln1
@gododdin.internal.jasmine.org.uk:

Quoted message said:

My money's on bearings.

Either that or the "swinging arm/chainstay" bushing (or whatever else is
involved in permitting the Trice rear end to fold.

Whatever, because of the "on power only" aspect, I'd suspect anything that
lets the frame and/or rear axle flex enough for a rotating something to
contact a non-rotating something. It might also be something that rotates
and hits a "stop" with pedal rotation that's free enough to move when you
apply power but not yet loose enough to knock all the time.

FWIW, the already ancient fixer I had as a teenager developed an "on-
power" clunk that wasn't quite in sync with cadence, I could feel it
through the pedals, but it seemed to be coming from the rear wheel. Turned
out to be crumbling bottom bracket bearings and the chain was transmitting
the shock to the rear wheel, where something there was resonating. So, if
you can feel the plunk through your pedals, I'd suggest checking the BB as
well. Also, if the plunk is synchronous with your cadence, check the boom
to make sure it isn't rotating in the frame.

Dave, I suspect you've done thousands of miles more than me, and I have no
experience of Trice (other than lusting for a "T"😉 - so sorry if this is
teaching granny to suck eggs...

.... and this is pure guesswork (but you did ask for guesses!)

In news:[email hidden],
Will Cove <[email hidden]> tweaked the Babbage-Engine to tell us:

Quoted message said:

Either that or the "swinging arm/chainstay" bushing (or whatever else
is involved in permitting the Trice rear end to fold.

Deffo not that, as mine is a non-folding one :-)

Quoted message said:

FWIW, the already ancient fixer I had as a teenager developed an "on-
power" clunk that wasn't quite in sync with cadence, I could feel it
through the pedals, but it seemed to be coming from the rear wheel.
Turned out to be crumbling bottom bracket bearings and the chain was
transmitting the shock to the rear wheel, where something there was
resonating. So, if you can feel the plunk through your pedals, I'd
suggest checking the BB as well. Also, if the plunk is synchronous
with your cadence, check the boom to make sure it isn't rotating in
the frame.

Can't feel anything through the pedals, just hearing the noise, and I'm 99%
certain it's coming from the rear wheel...

--
Dave Larrington
<http://www.legslarry.beerdrinkers.co.uk>
Mr. Charles Kennedy (Krankieburgh): Would the Prime Minister
care to comment on a report in today's Guardian that he: "arrived
late for a meeting with Jacques Chirac, smelling of alcohol, and
with body language suggesting a total disregard for the rights
of ethnic minorities, lone parents and laboratory animals"?

In news:[email hidden],
Chris Smith <[email hidden]> tweaked the Babbage-Engine to tell us:

Quoted message said:

Dave Larrington said:

Actually, it's more a sort of knocking noise, emanating from the
rear end of the Trice. It only does it clonk-clonk-clonk-clonk when
power is being applied, and doesn't do it clonk-clonk-clonk-clonk
all the time. Any guesses?

Seized/sticking link in the chain?

Chain freshly washed and re-oiled, checked for wonky links and suspicious
political tendencies, and all OK. When it /did/ have a dodgy link, it would
go "clonk" when said link went through the rear derailleur, and "clonk"
again as it passed over the idler pulley, and finally "bang" as the side
plate pulled away from the pin and wrecked the front derailleur :-(

This noise sounds more like Meg White :-)

--
Dave Larrington
<http://www.legslarry.beerdrinkers.co.uk>
Mr. Charles Kennedy (Krankieburgh): Would the Prime Minister
care to comment on a report in today's Guardian that he: "arrived
late for a meeting with Jacques Chirac, smelling of alcohol, and
with body language suggesting a total disregard for the rights
of ethnic minorities, lone parents and laboratory animals"?

Dave Larrington hatte geschrieben:

Quoted message said:

In news:[email hidden],
Chris Smith <[email hidden]> tweaked the Babbage-Engine to tell us:

Quoted message said:

Dave Larrington said:

Actually, it's more a sort of knocking noise, emanating from the
rear end of the Trice. It only does it clonk-clonk-clonk-clonk when
power is being applied, and doesn't do it clonk-clonk-clonk-clonk
all the time. Any guesses?

Seized/sticking link in the chain?

Chain freshly washed and re-oiled, checked for wonky links and
suspicious political tendencies, and all OK.

As the drivetrain seems to be pretty much excluded I want to suggest to
check the seat mounts and the attachment of the rear end. Pedaling puts
stress there which might result in noises. Are your two dynamos still
properly in place?
Is your's a Trice with rear suspension? If so the shock and the bearings
are among the usual suspects also, of course.

Günther

In news:[email hidden],
Günther Schwarz <[email hidden]> tweaked the Babbage-Engine to tell us:

Quoted message said:

As the drivetrain seems to be pretty much excluded I want to suggest
to check the seat mounts and the attachment of the rear end. Pedaling
puts stress there which might result in noises.

Could be, but it seems to vary with road speed rather than cadence. The
seat creaks occasionally, but that's a very different noise.

Quoted message said:

Are your two dynamos
still properly in place?

Yep.

Quoted message said:

Is your's a Trice with rear suspension? If so the shock and the
bearings are among the usual suspects also, of course.

No suspension...

I'm inclined towards rear hub bearings and/or freehub misbehaviour, but so
far have not had the time or tuits to disassemble and check same...

--
Dave Larrington
<http://www.legslarry.beerdrinkers.co.uk>
A complimentary biro(tm) is /not/ to be sniffed at.

On 5 Mar, 12:25, "Dave Larrington" <[email hidden]>

Quoted message said:

This noise sounds more like Meg White :-)

I reckon the bearings then

Dave Larrington said:

In news:[email hidden],
Günther Schwarz <[email hidden]> tweaked the Babbage-Engine to tell us:

Quoted message said:

Quoted message said:

Is your's a Trice with rear suspension? If so the shock and the
bearings are among the usual suspects also, of course.

No suspension...

I'm inclined towards rear hub bearings and/or freehub misbehaviour,
but so far have not had the time or tuits to disassemble and check
same...

A check if the cassette shows unusual play takes just a second and a
dirty fingertip. If it turns without wobble I can see no reason why it
should go plunk while pedaling. A problem with the pawls will be very,
very noticeable at the cranks.
As for the axle bearings:
- Put rear end of Trice on a beer crate. It does not matter too much
if it is a full or an empty one. But working on eye level with ants
and cucharachas will be very much excluded for everyone beyond his
twenties.
- Remove quick release completely.
- Take out rear wheel, but just to the point where you can grab and
turn the axle by hand.
- If it is spinning smoothly it should be fine. Put wheel back and
ask for further wild guesses at u.r.c.
- If not, remove it completely, take a beer from the crate and the
cone wrenches from the toolbox.
- Overhaul the hub and enjoy future rides where the only noises emerge
from the too small underseat pulley wheel.

Günther

In news:[email hidden],
Dave Larrington <[email hidden]> tweaked the Babbage-Engine to
tell us:

Quoted message said:

Actually, it's more a sort of knocking noise, emanating from the rear
end of the Trice.

Bearings as smooth as a smooth thing, no noticeable play in freehub - hub
interface. However, the cassette seems to be able to rock back and forth a
fair bit, no matter how tight the lock ring, and repeating the experiment
with a brand-new cassette seems to indicate either:

o the splines on the freehub are shagged
o they /all/ do that, Sir

Anyway, it doesn't appear to be fatal, so I suppose I shall have to put up
with it until such time as I can be arsed to get a new body.

/Freehub/ body, you shower of dunces!

--
Dave Larrington
<http://www.legslarry.beerdrinkers.co.uk>
Never tie your shoelaces in a revolving door.

On 9 Mar, 08:19, "Dave Larrington"

Quoted message said:

However, the cassette seems to be able to rock back and forth a
fair bit, no matter how tight the lock ring, and repeating the experiment
with a brand-new cassette seems to indicate either:

o the splines on the freehub are shagged
o they /all/ do that, Sir

I put a new cassette on a freehub last night and there wasn't any
rockin' goin' on

in message <[email hidden]>, Dave Larrington

(') said:

In news:[email hidden],
Dave Larrington <[email hidden]> tweaked the Babbage-Engine
to tell us:

Quoted message said:

Actually, it's more a sort of knocking noise, emanating from the rear
end of the Trice.

Bearings as smooth as a smooth thing, no noticeable play in freehub - hub
interface. However, the cassette seems to be able to rock back and forth
a fair bit, no matter how tight the lock ring, and repeating the
experiment with a brand-new cassette seems to indicate either:

o the splines on the freehub are shagged
o they /all/ do that, Sir

Can't speak for those nasty Japanese things, of course, but proper ones
don't do that, sir.

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/
Iraq war: it's time for regime change...
... go now, Tony, while you can still go with dignity.
[update 18 months after this .sig was written: it's still relevant]

In article <[email hidden]>, Dave Larrington
[email hidden] says...

Quoted message said:

Anyway, it doesn't appear to be fatal, so I suppose I shall have to put up
with it until such time as I can be arsed to get a new body.

You are Chucky AICMFP

Quoted message said:

/Freehub/ body, you shower of dunces!

Oh.

In news:[email hidden],
Simon Brooke <[email hidden]> tweaked the Babbage-Engine to tell us:

Quoted message said:

in message <[email hidden]>, Dave Larrington

(') said:

In news:[email hidden],
Dave Larrington <[email hidden]> tweaked the
Babbage-Engine to tell us:

Quoted message said:

Actually, it's more a sort of knocking noise, emanating from the
rear end of the Trice.

Bearings as smooth as a smooth thing, no noticeable play in freehub
- hub interface. However, the cassette seems to be able to rock
back and forth a fair bit, no matter how tight the lock ring, and
repeating the experiment with a brand-new cassette seems to indicate
either:

o the splines on the freehub are shagged
o they /all/ do that, Sir

Can't speak for those nasty Japanese things, of course, but proper
ones don't do that, sir.

Neither of the other Japaknees ones I have do it, and nor does the BRITISH
one. I can't speak for the Eyetalians, but then AFAIK they don't make 135mm
OLN hubs anyway :-)

--
Dave Larrington
<http://www.legslarry.beerdrinkers.co.uk>
The entire population of Uxbridge has no idea that it doesn't
actually exist.