cassette wobble

"wle" <[email hidden]> wrote in message
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Quoted message said:

i have a standard road bike.
shimano 7 speed cassette.

it 'wobbles'.

Is this a cassette or a freewheel? Freewheel wobble is OK.

In the event that you don't know the difference, here's an explanation:

A cassette's cogs fits over splines that are intigrated into the hub. A
freewheel has a body with freewheeling/locking mechanism upon which cogs are
placed. It is screwed onto a hub.

Gary Jacobson
Rosendale, NY

wle said:

i have a standard road bike.
shimano 7 speed cassette.

it 'wobbles'.
this is how to duplicate it.
turn bike upside down.
spin rear wheel.
as the wheel rotates, the cassette wobbles from side to side by about,
1-1.5 mm.

it;s not loose.
the freehub isn;t loose.
it;s not the wheel trueness.
the quick release is tight.

what could that be?

bent axle?
but the axle is stationary, the wheel hub moves around it..

bent hub?

i can;t figure it out.

doesn;t really cause any known problem.
just looks weird
if you look at it.

?
wle.

it's not a problem. it's simply that the teeth are angled to assist
shifting, and the angles are set different on different parts of the
cassette. if you look below the teeth, you'll see that the rest of the
cassette disks are in fact quite straight.

wle said:

i have a standard road bike.
shimano 7 speed cassette.

it 'wobbles'.
this is how to duplicate it.
turn bike upside down.
spin rear wheel.
as the wheel rotates, the cassette wobbles from side to side by about,
1-1.5 mm.

Question of tolerances: the axis of the freewheel bearings isn't on the
same line as the screw-on threads. Don't worry about it
--
---
Marten Gerritsen

INFOapestaartjeM-GINEERINGpuntNL
www.m-gineering.nl

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

Quoted message said:

i have a standard road bike.
shimano 7 speed cassette.

it 'wobbles'.

In my experience, since you say you have a cassette, not a freewheel, I
would say that a bent axle is a distinct possibility, and perhaps the most
likely possibility. It is consistent with bent axle symptoms, anyway.

You can replace the axle, but make sure you compare the cost of that service
or those parts to the price of a new wheel--depending on age/wear of your
wheel. Or you can ride it until all the cones and races are completely worn
out and replace the hub or wheel. Again, your choice depends on initial
quality of your rig.

Make sure you buy a high quality axle, too, so that you don't have the same
problem again.

Hope this helps.
Blake

B Paton said:

In my experience, since you say you have a cassette, not a freewheel, I
would say that a bent axle is a distinct possibility, and perhaps the most
likely possibility. It is consistent with bent axle symptoms, anyway.

Nope, it's not. Bent axle doesn't cause cassette body wobble. Hell, bent
axle actually cause very little, aside from bearing crappiness if the bend
is in the right place (I've got a half dozen axles bent just outside the
inboard wheel bearing on a freewheel bike, and that just makes parts
eventually touch that aren't supposed to, doesn't cause any bearing play
or wobble).

Almost certainly he's actually got a freewheel with the typical freewheel
wobble and not a cassette.

Jasper

grab the "cassette" and pull/push in axles' inboard outboard
direction-along the axles length
is there play in the space between the hub at the flange where the
spokes attach and the last "cassette" cog?
if so its not tight and needs a larger spacer between two cogs or last
cogand hub. see LBS.

no, it;s plenty tight there.

wle.

it;s a cassette, i have disassembled the whole wheel before...

wle.

but now that i think about it,
a bent axle would just change the angle that the wheel is held at.

i can;t see how it would cause any 'rotary' effects, since the axle is
stationary.

wle.

i like that - basically, don;t worry about it.. 🙂

wle.

wle said:

no, it;s plenty tight there.

Family newsgroup pal.

(CONTEXT!!!)

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

Quoted message said:

but now that i think about it,
a bent axle would just change the angle that the wheel is held at.

i can;t see how it would cause any 'rotary' effects, since the axle is
stationary.

wle.

You be the judge. If I have understood the description of the symptoms
correctly, I would replace the axle. It has for me worked in what appear to
be simialr circumstances. Howver, you may need to troubleshoot more, and the
wheel is probably resonably stable for now.

Good luck. A famous detective once counselled, "Eliminate the impossible,
and whatever is left, no matter how improbable, must be the truth."
Blake

wle said:

i have a standard road bike.
shimano 7 speed cassette.

it 'wobbles'.
this is how to duplicate it.
turn bike upside down.
spin rear wheel.
as the wheel rotates, the cassette wobbles from side to side by about,
1-1.5 mm.

Perfectly normal. This can be ignored. It occurs only when the
cassette's clutch is overrunning, and is of no consequence.
--
Typoes are a feature, not a bug.
Some gardening required to reply via email.
Words processed in a facility that contains nuts.

wle said:

no, it;s plenty tight there.

Lube well.

--
Sock Puppet

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Sock Puppet said:

wle said:

no, it;s plenty tight there.

Lube well.

Three hours and one minute after my crack.

{pause}

Let's let that one go...

{pause}

!

Bill Sornson said:

Sock Puppet said:

wle said:

no, it;s plenty tight there.

Lube well.

Three hours and one minute after my crack.

TMI

Quoted message said:

{pause}

Let's let that one go...

Phew!

Quoted message said:

{pause}

!

!!!

--
Sock Puppet

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