rec.sport.unicycling · Public discussion

Bearing problem: Stuck/Shifted bearing

Evan Byrne · 2007-08-02T17:01:27+00:00

So I was riding my uni yesterday and as I'm taking a break I see some shavings of powdercoat on my cranks and I see that my right bearing had shifted out and was almost hitting the cranks, this caused the lips of my yuni bearing holder to scrape the crank. Normal : [image: http://i83.photobucket.com/albums/j288/evanbyrne/IMGA0239.jpg] Messed: [image: http://i83.photobucket.com/albums/j288/evanbyrne/IMGA0240.jpg] Its quite stuck, I can't move it with a screwdriver and a hammer. What shal I do? -- Evan Byrne ------------------------------------------------------------------------ Evan Byrne's Profile: http://www.unicyclist.com/profile/9367 View this thread: http://www.unicyclist.com/thread/63127 Posted Via Usenet.com Premium Usenet Newsgroup Services ---------------------------------------------------------- ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY ** ---------------------------------------------------------- http://www.usenet.com

Started by Evan Byrne · 2 August 2007 · Last activity 3 August 2007 · 27 posts · 335 views

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01 / Original postBearing problem: Stuck/Shifted bearingEvan Byrne · 2 Aug 2007 02 / This pagePosts 1–20Page 1 of 2 · chronological order 03 / Latest replyPost #27Evan Byrne · 3 Aug 2007

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Original section: rec.sport.unicycling
Published: 2 August 2007
Last activity: 3 August 2007
Original author: Evan Byrne
Posts: 27
Discussion status: Public discussion
Total views: 335
Views / 30 days: 0
Topics: Taper and peaking Chain lube and cleaning Cranksets Electronic shifting

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Original post
Evan Byrne
Archived post

2 August 2007, 17:01 UTC #1

So I was riding my uni yesterday and as I'm taking a break I see some
shavings of powdercoat on my cranks and I see that my right bearing had
shifted out and was almost hitting the cranks, this caused the lips of
my yuni bearing holder to scrape the crank.
Normal :
[image: http://i83.photobucket.com/albums/j288/evanbyrne/IMGA0239.jpg]
Messed:
[image: http://i83.photobucket.com/albums/j288/evanbyrne/IMGA0240.jpg]
Its quite stuck, I can't move it with a screwdriver and a hammer. What
shal I do?
--
Evan Byrne
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thejdw
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2 August 2007, 17:04 UTC #2

is there a spacer there?
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thejdw
kington99 said:
A hobnob is an oaty biscuit, the fact that they don't exist in america
just goes to show that you have no culinary heritage 🙂

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Evan Byrne
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2 August 2007, 17:06 UTC #3

You can see the black spacer next to the hub, normaly the bearing should
be touching that.
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isaac steiner
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2 August 2007, 17:07 UTC #4

Thats so weird.
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thejdw
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2 August 2007, 17:13 UTC #5

well theres to spacers on one side and only one on the other, unless
thats the inside of the bearing. that would mean you've killed the
bearing
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thejdw
kington99 said:
A hobnob is an oaty biscuit, the fact that they don't exist in america
just goes to show that you have no culinary heritage 🙂

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Det-riot
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2 August 2007, 17:14 UTC #6

could the metal have expanded due to heat?
your in cali rihgt? so its going to be hot
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Ducttape said:
sounds like he toook a feild trip to jail.... DON'T DROP THE SOAP
DUDE!!!
KOXX-ONE* DOES NOT* SUCK!!!!
'MRIS!!!!' (http://tinyurl.com/2486qk)
'1000th Post' (http://tinyurl.com/33shzt)
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thejdw
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2 August 2007, 17:20 UTC #7

I think the part coloured in red has broken free
+-------------------------------------------------------------------+
|Filename: bearing2.jpg |
|Download: http://www.unicyclist.com/attachment/21448 |
+-------------------------------------------------------------------+
--
thejdw
kington99 said:
A hobnob is an oaty biscuit, the fact that they don't exist in america
just goes to show that you have no culinary heritage 🙂

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Evan Byrne
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2 August 2007, 17:28 UTC #8

No...That metal sleeve you see to the left of the bearing and to the
right of the shim is a sleeve that goes over the axle to get the
bearing to fit. The ID of the bearing is bigger than the axle so it
needs this.
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pdc
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2 August 2007, 17:32 UTC #9

Shouldn't there be spacers between the crank and the bearing also? That
way it cant move.
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Evan Byrne
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2 August 2007, 17:34 UTC #10

Well, i dont belive moment cranks extend farther over the spline, i may
be wrong though, Can someone take a pic of thier moment crank on a
moment hub for me? But even before i put another spacer on there, i
need to move the bearing, its quite stuck right now.
--
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Racenut
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2 August 2007, 17:50 UTC #11

Take the crank arm off, get a deep well socket that just fits over the
axle and tap the bearing back down evenly. Using a screwdriver doesn't
put even pressure around it and will just tweak the bearing.
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the goal.*
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Evan Byrne
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2 August 2007, 17:51 UTC #12

Racenut said:
Take the crank arm off, get a deep well socket that just fits over the
axle and tap the bearing back down evenly. Using a screwdriver doesn't
put even pressure around it and will just tweak the bearing.
I don't have a socket that big.
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feel the light
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2 August 2007, 19:30 UTC #13

Like my 05 KH24, and unlike my 07 KH20 (with the moment hub. So, if I am
right, you can just take out the center axle Allen bolt, and remove the
crank without a puller, as that should be a non tapered spline (unlike
the tapered spline moments)
Find a pipe, buy- borrow a socket to drive the bearing back. It is
important not to hit the outer race driving on the bearing, or it will
be damaged.
Hows the bearing ? Does it turn smooth, or is it sticking ? One good
thing about the older 05 hubs is that they use a standard bearing you
can buy locally. A 20x42 I think. Just copy the # off the side of the
bearing and work the phone. The new moments use a 22x42 which is a
screwy non standard size (why couldn't they pick the standard 22x44 ?).
So in this case you should be in luck, and able to find the bearing at
a parts store in your town.🙂 Hopefully it turns smooth, and all you
need to do is tap it back on. Don't mess with the seal !
--
feel the light
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fist
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2 August 2007, 19:50 UTC #14

Evan Byrne said:
I don't have a socket that big.
how about a pipe or any cylindrical piece of metal that size.
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Evan Byrne
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2 August 2007, 20:17 UTC #15

feel the light said:
Like my 05 KH24, and unlike my 07 KH20 (with the moment hub. So, if I am
right, you can just take out the center axle Allen bolt, and remove the
crank without a puller, as that should be a non tapered spline (unlike
the tapered spline moments)
Find a pipe, buy- borrow a socket to drive the bearing back. It is
important not to hit the outer race driving on the bearing, or it will
be damaged.
Hows the bearing ? Does it turn smooth, or is it sticking ? One good
thing about the older 05 hubs is that they use a standard bearing you
can buy locally. A 20x42 I think. Just copy the # off the side of the
bearing and work the phone. The new moments use a 22x42 which is a
screwy non standard size (why couldn't they pick the standard 22x44 ?).
So in this case you should be in luck, and able to find the bearing at
a parts store in your town.🙂 Hopefully it turns smooth, and all you
need to do is tap it back on. Don't mess with the seal !
The bearing is perfectly intact. I've only riden the uni for like an
hour. The bearing is just stuck on the outside of its sleeve.
--
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Smilymarco
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2 August 2007, 20:35 UTC #16

I had a little problem with my right bearing slipping a bit to the
outside too. I fixed it with a little piece from my seatpost (for a
little time) and then Roger sent me some spacers for the KH.
I also asked Kris about what was going on, cause i thought they maybe
forgot the spacers and so on.
Quote Kris:
The original prototypes for this hub did have a spacer. But with a
tight press-fit and stiff frame, it did not seem necessary to have the
spacer, so we took it out (ie. simpler = less parts to lose = lighter =
better).
On my new wheelset (also KH 2007), i bought before FLUCK, theres no
problem at all.
You could just get a spacer in there and the problem will be fixed.
Dont get a spacer thats too big cause you will destroy your crank or
hub then, cause the crank seems to be tight on the hub but it isnt.
Hope you know what i mean.
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DustinSchaap said:

tamesa is hot

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feel the light
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2 August 2007, 20:51 UTC #17

I read in the uni thread about your setup. Those are Qu-ax arms. So it
is good that your bearing is still happening. Hopefully you have a
puller, you should need it to pull the crank arm. You could try (once
the arm is off) to tap carefully around the inner race with a
screwdriver. You must only hit the inner race, or it's buggers. I would
try to find a tube-socket of some sort, unless it goes back on real
easy. Maybe a 25 mm seat post would work. I wouldn't worry about
spacers etc. now. Just put it back together and worry about it
happening again if it does. Maybe you will luck out. Could have been
caused by a loose bearing cap, or maybe it wasn't pressed on far
enough.
--
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Smilymarco
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2 August 2007, 21:14 UTC #18

27mm seatposts work good to get the bearing back in place and as spacers
😄
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DustinSchaap said:

tamesa is hot

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Evan Byrne
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2 August 2007, 21:30 UTC #19

Fixed.
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thejdw
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2 August 2007, 21:32 UTC #20

Evan Byrne said:
Fixed.
yay 🙂
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kington99 said:
A hobnob is an oaty biscuit, the fact that they don't exist in america
just goes to show that you have no culinary heritage 🙂

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