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Moment Crank Insert Issue



 
 
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  #1  
Old April 16th 08, 09:08 PM posted to rec.sport.unicycling
Brian O.
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Default Moment Crank Insert Issue


Hey everyone, I searched for threads dealing with a similar issue and
found two, however neither really had a conclusive solution. Just
recently when installing a new set of pedals into my ISIS KH trials
cranks I noticed that the insert which the pedals thread into has begun
spinning. It makes truly tightening the pedals impossible and removing
them equally as difficult. I haven't been able to ride because I'm
concerned that it will ruin the threads in the crank. What should I do?


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  #2  
Old April 16th 08, 10:25 PM posted to rec.sport.unicycling
Jerrick
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Default Moment Crank Insert Issue


Brian O. wrote:
Hey everyone, I searched for threads dealing with a similar issue and
found two, however neither really had a conclusive solution. Just
recently when installing a new set of pedals into my ISIS KH trials
cranks I noticed that the insert which the pedals thread into has begun
spinning. It makes truly tightening the pedals impossible and removing
them equally as difficult. I haven't been able to ride because I'm
concerned that it will ruin the threads in the crank. What should I do?




Didnt Kris comment on this issue once?

I remember most people just taking the little two-pronged tool and just
tightening that insert back up and were good. Bikers have a lot of
troubles with inserts as well, but it seems for their cranks, the
insert is under a warranty, im not sure if KH has a warranty on inserts
though, but they are supposed to be glued and locked into place.

Anyways, if the threads are still in good shape, id just take the
insert out, grab some epoxy/loctite 262, put some of that in there, and
re-thread the insert in, and get it in tight. Leave it for a day, and
it should be good and set after that.

If they are damaged though, dont do anything yourself until you know
about any warranty, cause gluing the insert back in my void the
warranty.


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  #3  
Old April 16th 08, 11:42 PM posted to rec.sport.unicycling
Brian O.
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Default Moment Crank Insert Issue


Alright, sounds good. Thanks Jerrick. Hopefully my lbs doesn't charge me
to use that tool.


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  #4  
Old April 17th 08, 02:26 AM posted to rec.sport.unicycling
feel the light
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Default Moment Crank Insert Issue


It's a bit like using one nut to lock another. Sure, the insert backs
out a bit when you remove the pedal. Grease the new pedal. When you
turn it in tight, the insert will tighten up again.

I would try it that way, no extra work involved. The insert will be
tight when the pedal is.

I am assuming you don't change pedals often. If you do, wear on the
insert's outer threads may be a factor.

I think that the insert on my 07 KH 20 moved a tiny bit the last time I
changed pedals. I tightened the pedal good, and everything's been fine
for a few months.

Sometimes the best maintainance is to leave things alone. Trying to fix
that tiny rotation of the insert when you change pedals, is making more
work then it will solve IMHO. The outer thread of the insert is tight
against crank when the pedal is tightened. There should be no play or
wear when riding.


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  #5  
Old May 22nd 08, 11:47 AM posted to rec.sport.unicycling
ivan
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Default Moment Crank Insert Issue


My insert just came out when I was unscrewing the pedal. The threads are
alright.

I'm gonna grease up the insert to be able to get the pedal out, then
screw it in with loctite, wait for it to dry and then take out the
pedal.

Just before the trip, damn.


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  #6  
Old May 22nd 08, 11:54 AM posted to rec.sport.unicycling
sp4rky-m4rky
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Default Moment Crank Insert Issue


ivan wrote:
My insert just came out when I was unscrewing the pedal. The threads are
alright.

I'm gonna grease up the insert to be able to get the pedal out, then
screw it in with loctite, wait for it to dry and then take out the
pedal.

Just before the trip, damn.




Yea mine came loose, I have lock-tighted them in now. I havnt had any
problems since and I have changed my pedals alot now.

Its almost worth doint it as soon as you get your cranks because i
think its almost garenteed to happen sooner or later.

The hardest bit is tightening or undoing the locking ring in the back.
If you can do that you shouldnt have a problem.


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  #7  
Old May 22nd 08, 11:58 AM posted to rec.sport.unicycling
ivan
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Default Moment Crank Insert Issue


Actually, I've just inspected the threads more carefully and all of them
are fine, except for the ones on the insert that go into the locking
ring. That's stripped. How important is the locking ring?

It seems I'll have to do without it, at least for a while.


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  #8  
Old June 3rd 08, 11:18 PM posted to rec.sport.unicycling
Brian O.
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Default Moment Crank Insert Issue


I'm going to revive this just in case someone has this problem in the
future and comes upon this thread. I spoke directly to Kris about the
problem and this is what he said to me:



Hi Brian,

The pedal insert is threaded into a casing. Occasionally they break
loose. I have the same problem on a pair of 125/150mm double hole
cranks. As long as everything is tight, it doesn't seem to be a
problem. Just tighten everything up, and if it looks like the insert
is turning, just keep tightening the pedal until everything tightens.
If they ever come out completely, just take some loctite and fix it
that way. Park Tools makes a special tool for tightening it. If it
annoys you, UDC could fix it for you.

Kris



--
Brian O.

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  #9  
Old June 3rd 08, 11:33 PM posted to rec.sport.unicycling
Enoch
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Default Moment Crank Insert Issue


I have been noticing about a 1/3 revolution in mine when installing and
loosening pedals also. Mine hasn't backed all the way out yet, but it
always tightens back in when installing the pedals. You need to make
sure you ride your Uni a bit after installing the pedals, if you know
your inserts are loose. I can get another 1/4 turn on mine after riding
it down the drive way, then they settle into place.

Anybody know of a Park Tool that fits the insert ? It is a bit larger
than the one for the crank extractor bolt.


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  #10  
Old June 4th 08, 08:17 PM posted to rec.sport.unicycling
helpdeskuni
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Default Moment Crank Insert Issue


The tool you'll need is called a spanner wrench. It's always nice to
have some loctite put in the insert too if you're willing to loosen the
insert and take it all the way off. A local bikeshop will have a
spanner wrench and most likely won't charge a cent to tighten it...at
least if they're nice guys


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