Replacing Parts

You could just buy a KH hub and have your LBS rebuild the wheel. Mine
have built several wheels for me. If your rim is ok, then don't bother
with the entire wheel set, unless you don't want to mess around with
having the wheel rebuilt.

As for frame width, unicycle hubs should all fit with only a little bit
of persuasion. Unless you have a carbon fibre or aluminium frame, then I
don't think you are supposed to bend them.

Oh the KH wheelset will fit the Nimbus II 24" frame.

--
one wheeled stallion - Guerilla Unicyclist

OWS

"...I explain briefly to him that such conduct leaves him vulnerable to
accusations of being an idiot. We part as enemies" - Mikefule

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If the flanges are a different size then you might need new spokes, too.
Most unicycle hubs are pretty similar so you'll probably get away with
it.

If you are riding hard and likely to trash the hub again then it is
probably time for a splined hub.

Cost wise it depends on your bike shop. Building a unicycle wheel will
be a bit trickier as it doesn't fit in a normal wheel building jig so
they might charge you a bit extra. If that is the case then it'll
probably be the same price as a new wheel.

Finally, wheel building isn't difficult so you could tackle it
yourself.

ATB
Nick

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one wheeled stallion said:

As for frame width, unicycle hubs should all fit with only a little bit
of persuasion. Unless you have a carbon fibre or aluminium frame, then I
don't think you are supposed to bend them.

Right. Except I found your wordinbg a little confusing. To clarify,
it's generally OK to bend steel frames to fit a new hub, but best not
to try that with aluminum (and especially not carbon fiber).

Ken

If you get your LBS to rebuild the wheel, it is very likely they will
replace the spokes. Even if they are the same length with the new hub
(whatever it might be) most wheel builders I've met insist on using new
spokes. This will add to the cost of the rebuild.

+o}\{y

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TonyMelton - Skinny butt

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TonyMelton said:

*If you get your LBS to rebuild the wheel, it is very likely they will
replace the spokes. Even if they are the same length with the new hub
(whatever it might be) most wheel builders I've met insist on using
new spokes. This will add to the cost of the rebuild.

+o}\{y *

I think the reason most Wheel builders insist on new Spokes are that it
is much faster to cut out all the old spokes. If you're paying your
bike mechanic by the hour, imagine how long it takes for them to unscrew
each spoke.

I suggest if you're desperate about saving money to ask if they will
rebuild the wheel if you unscrewed the spokes yourself. But if you've
been rough on the wheel the spokes might not be that flash.

--
GizmoDuck - NZUNI

o-kO

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fish, and he feed himself for life. Teach man to wheel ride, and he
make friends everywhere, anywhere, and even have lunch at their
place."
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GizmoDuck said:

*

I think the reason most Wheel builders insist on new Spokes are that
it is much faster to cut out all the old spokes. If you're paying
your bike mechanic by the hour, imagine how long it takes for them to
unscrew each spoke.

I suggest if you're desperate about saving money to ask if they will
rebuild the wheel if you unscrewed the spokes yourself. But if you've
been rough on the wheel the spokes might not be that flash. *

Yes, exactly. It's cheaper to use new spokes. Cutting out the old
spokes takes a few seconds, but unscrewing them takes five to ten
minutes. And then re-using them to build a wheel takes a little longer
because the threads tend to be a little corroded so the truing and
tensioning takes longer.

If you are going to re-use spokes to save money then do most of the work
yourself. Get a hub that uses spokes of the same length. In practice,
that generally means having the same flange spacing and radius.
Carefully de-tension the wheel so that you don't prang the rim.
(Unscrew all the spokes 1/4 turn, then repeat until they are slack. Once
the hard tension is off you can start going with 1/2 turns.) Lace up
the new hub and get it roughly true with low tension. THEN take it to
the LBS for the final true and tension.

Tell them what you intend to do up front and they'll help you a bit. It
saves them work later to have you use a proper spoke lube, etc.

If it were me I'd buy a whole new wheel set and keep the old one in
reserve as a spare.

--
cyberbellum - Level 1.0 rider!

I was standing in the park wondering why frisbees get bigger as they get
closer. Then it hit me.
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There is a spoke length calculator on the unicycle.com UK site where you
enter the hub and rim and number of spoke crosses and it gives you the
spoke length you need. I switched out my suzue hub with a profile and
the same spokes were close enough to reuse. The suzue is narrow with
large flanges and the profile is wider with small flanges so the spoke
length was only a couple of millimeters diferent. I think that reusing
spokes is fine, bike shops like to allways use new spokes because as
mentioned before its easier to cut them out than unscrew the nipples,
and then they get to sell you new spokes. With stainless steel spokes
and brass nipples corosion is not a problem, and neither is reusing
spokes if anything used spokes are tested and any stretching they may do
has allready happened.

--
Tellurider - Dan Wilson

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So how much has it actually cost people to rebuild their wheels? As a
baseline for me to work with... I went less than a mile today and that
dang right crank went loose again... walked home :'( I'm thinking of
getting the KH hub, which will mean new cranks as well... so maybe it
will end up being cheaper to just buy the whole wheelset...

--
evil-nick - Living in Balance

Never kick a unicyclist in the groin... it will only make them grow
stronger...

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Rebuilding your wheel can cost nothing if you borrrow a spoke wrench
and do it yourself. Otherwise, I can tell you that Kovachi Wheels who
build wheels for unicycle.com advertise $30 for a wheelbuild. You may
need new spokes when you change hub and/or rim, and that'll set you
back an additional $15, or so.

The bearings that come with the splined KH hub are 42mm (outside
diameter), while I think most unicycles use 40mm. Unless your frame
accomodates the larger size (e.g. currently uses shims to fit the
bearings) you can't use the splined KH hub. You can go Profile for
about $110 more.

As for price, by the time you're done with hub, cranks, spokes,
bearings, and wheelbuilding cost, you'll probably save a few dollars
and end up with a better built wheel compared to the KH wheelset on
unicycle.com. The advantage of the wheelset is it comes with a great
rim plus tire, tube, etc. If you go Profile, you'll definitely save
money buying the hub a la carte.

Ken