Advice On Slack In Kh-schlumpf?

For splined cranks you should hit them on most of the way with something
that won't damage them, and then screw the crank bolt in after.

I do not know anything about the other issue.

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jamessd

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Kieron said:

I tell u wat they would have to be a very commited pedo to learn to ride
a unicycle in order to mingle with us, steel one of us and rape us in a
bush.

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Paulo said:

Hi,

I just received my khschlumpf built to a kh29 wheel by Roger.
YESSSS!!!🙂
It arrived before I got around to grinding the bearing holder inner lip
to size, so all I can do to play with my new toy is put on the cranks
and adjust the buttons.

Having done this, I would like to ask for your collective wisdom on the
following:

1. I found there is a kind of slack when in direct/1:1 drive, a slight
movement of the cranks which rock back and forth with a metallic "toc"
sound at either en of each rock. Feels to the hand almost exactly like
a loose square taper crank only with a definite sound. In your
experiences, is this as it's supposed to be? Does the movement increase
with miles and wear?

2. This is my first ISIS hub and I have found it really difficult to
fit the cranks. Much more so than square tapers. I now have one on, but
the other is only half way and I'm pretty sure I'll ruin the crank bolt
if I keep trying to screw the crank up the axle. The 6mm shallow allen
hole feels flimsy compared to the usual 8mm...

thank you for your help,

Paulo

There is definitely a bit of slop in the gear train; that is expected
behavior. When I idle in 1:1 mode, there's a thunk at the bottom of
each idle. It probably gets marginally worse over time, but you'll get
used to it.

I also found the cranks hard to install the first time, and stripped
the 6mm allen bolt doing it. I think the tolerances are not very
accurate on the KH Moment cranks (it could be the tolerances on the
hub, but I trust Florian's manufacturers more than the guys in Taiwan).
They do get easier to install after use; one thing you could do is do
a little bit of riding/hopping with them installed the way they are
now, remove them and reinstall. It should be easier the second time.
Definitely do what you can to hammer them in with a rubber or plastic
mallet first, but even that probably won't get them much further. Use
grease on the hub splines.

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tholub
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Thank you for your replies.

Does anyone know if the axle is a single piece going straight through
the mechanism? The expense of the whole thing is rather inhibiting when
you stare the thing in the eye, heavy mallet in hand, and I find myself
loath to really belt the cranks on...

paulo

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Paulo
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Firstly, yes, the metallic 'toc' and slight play is normal. It really
isn't anything to worry about, and after the first 10 minutes riding,
you won't even notice it's there. My Schlumpf (original square taper,
not KH version) has several thousand miles on it now, and it really
doesn't seem to be any different. When I topped up the oil a few
months back, the 'toc' sounded a bit more metalic than beforehand, but
it didn't seem to affect anything else.

The axle is made in one piece, so it should stand up to a bit of
pounding. The scary bit for me is using a crank extractor to get the
cranks off - if you don't have the little sleeve thing the right way
around, you're in danger of mangling the gear shift rod and god knows
what else! :eek:

STM

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semach.the.monkey
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