KH-Onza hub/crank problem!

Have you put grease or antiseize (copperslip) on the splines.
If you are running metal on metal, you will have creaking noises

Ive heard that many people have had creaking noises on splined cranks,
until the lube the splines up and the noise is gone, this will also
prevent wear.

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I took delivery of my new KH/Onza trials before Christmas and had a
squeak virtually out of the box. I managed to fix the problem by
removing the wheel from the frame, stripping one side down at a time
(i.e. undo all, remove all, check all is clean, rotate cranks one or two
splines and re-fit all), then nipping both sides up evenly and finally
tightening the crank bolt (HARD) on either side, in turn, to try and get
an even squeeze. I then re-fitted the wheel to the frame.
I have had to re-tighten one side again once, but otherwise no
problems.
I didn't use anti-sieze when I re-fitted as I didn't have any with me at
the time, but I would have if I'd had it.

I had the same problem with my old style KH Muni when I got it about a
year ago and applied a similar technique to that above, with similar
success.

I was a little disappointed to have problems with these expensive
machines so early on, but both were fixed pretty easily and have
remained fixed (with the odd tighten up now and again), so I can't
really complain.

Gary

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everything on a taiwan unicycle needs to be stripped apart and greased
if you want it to run silent.

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Unicyclotrone said:

Did any of you had similar problem with Kh-Onza
Hub&crankset? Or do you have any suggestions how this problem can be
fixed?

I had this problem with my KH24 2004. I thought everything was tight
and I was as puzzled as you are now. It turned out in the end that the
pinch bolts were tight but not tight enough. Here's the procedure that
should fix it:

Loosen all four (2x2) bolts,
remove the cranks,
grease (or maybe better antiseize) the splines,
grease all four bolts,
slide the cranks back on,
tighten the pinchbolts much (*),
retighten the axle bolts.

(*) Roger of unicycle.uk.com gave advice during the process and said
that they use a 6" allen key and stand on it to get the pinch bolts
tight. However, Kris Holm was also involved at the time and commented
that that might be too much and break the bolts. But anyway, they
should be REAL tight.

Let us know if it works!

Klaas Bil - Newsgroup Addict
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people who unicycle are shyly exhibitionistic - GILD

Klaas Bil said:

(*) Roger of unicycle.uk.com gave advice during the process and said
that they use a 6" allen key and stand on it to get the pinch bolts
tight. However, Kris Holm was also involved at the time and
commented
that that might be too much and break the bolts. But anyway, they
should be REAL tight.
[/B]

I have a set of long series allenkeys which I use for my axle and pinch
bolts, it give you the extra torque to get it tight, but not enough to
break it.

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Don't worry, I wouldn't see creaking cranks as a serious problem, and I
don't think there is anything seriously wrong with your cranks. It tends
to happen with all splined, especially new cranks.
I was just like you, when I first got my KH cranks they started creaking
horribly and I was really worried that something was wrong, I wasted a
lot of money for the bike shop to take a look, they just re-greased
everything. That helped, but only for a short time, I was worried again,
then I got smart and bought some special grease/lube stuff and did it
myself. I just took everything off, cleaned it, greased it and put it on
nice and tight. The first few times I did this the cranks would start
creaking again after one ride, now, a few months later the cranks are
more worn in and don't make a sound.
Just regularly clean and grease everything, and eventually the sound
will go away, it just takes good maintenance and time 🙂

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When the tollerances are really tight (new uni), the creaking is
pronounced till the splines wear a bit and can set. After some serious
Muniing (stream crossings, et al), the problem is often rust. Every few
months I strip everthing down, rinse it all in an acid-based rust
buster, then coat everything in standard axel grease and reassemble,
cranking all but the bearings super tight. Then it's smooth riding --
till it starts squaking again. I've got a Profile on my 20 and a KH hub
on my 24 Muni and it's the same case with both hubs.

JL

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