Help making ultimate downhill Muni

I would use the Arrow Racing DHX rim! 🙂
Strong and stiff as hell, on of the very sturdiest rims on the market.

And i would never go under 150s on a 24" muni or 165 on 26", i use the
standard 165mm on my onza muni and i have all the power i need uphill..
Don't know if you need all the tourqe when going downhill with a brake
but if oyu're climbing the hill before (or after(or both)) you descend
it you'll be happy to have some more power..

I would get some other handle than the one on the saddle, or at least
get a seat stiffener! Especially if you're going with some shorter
cranks.

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I'm going to have to agree with lleberg on the rim- if youre making a
high end muni, why use a not-so-high-end rim?

if you are only going to be downhilling and/or very little uphill, I'd
use 150's. or if your local tials are really tech., 165's.

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don't use the KH hub and bedford frame, the frame has 40 mm bearing
holders, the KH hub is 42mm bearings
it's been done, but it's not recomended
it leaves pressure points on the bearings
everything sounds good
if you have a brake and are doing mostly DH, i think you'd have more fun
w/ short cranks, so there's a bit more of a speed aspect
i'd go w/ 140s and you'll still have some control

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I think you should go with the Sun double wide rim, never broken one
myself (and i have done repeated 5 to 6 foot drops). freaking strong,
out of all my unicycle equipment i don't think i will be breaking the
sun rim for a while. Also totally go for 24" just ask justin kohse... he
will tell you it can be used for everything, and unforchently you can't
argure with him casue he does all types of unicycling on it... lol...
mind you i perfer 20" for trials... but totally 24 for street so far.
have fun with your new uni, you have to show some pics when you get it

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Why not just get the KH Freeride?
It's a better frame that actually fits the bearings correctly. The rim
is wider than anything you can get other than the Large Marge. Wider is
better because the tire is more stable.

24" is better for technical downhill riding (like North Shore style).
Lighter and more maneuverable. When you're trying to zig zag and weave
through a rocky and rooty steep downhill (like North Shore stuff) the
slightly smaller wheel is an advantage.

Fitting a 42mm bearing in a frame designed for a 40mm bearing is not
ideal. It works but is problematic when you start riding hard. Get the
real deal like a KH frame. If you want something different you could
get a Hunter. I'm sure Hunter can make bearing holders to fit a 42mm
bearing.

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john_childs said:

*Why not just get the KH Freeride?*

I like the KH frame alot, but to be honest I kinda wanted a 26"........
^^ I've heard it both ways, some people say there isn't that much of a
diffrence other say there is.... I dunno.

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24" and 165mm is what I'd go for. I ride a 24" with 160mm Profiles. I
think 160mm is ideal for me, but KH Onza don't have them.

What I like about 24" munis is that they can make tight enough turns and
are more responsive than 26".

Andrew

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Kris Holm has offered the Freeride and XC.
While the XC is not a 26", it may as well be.

It would be great if you could try both setups.
If I were to start over from scratch, I would probably go with 26"

I like how:
It can be lighter with a thinner tire (but same diameter)
It has a tad more speed (great for enjoy downhills)
Replacement parts can be bought at the LBS
The tires are ultra-easy to change
There is a wider selection of tires
Road, cross-country, and down hill tire selection!
It's better for distance road riding

That said, I have a 24" like most people.
(3.0 Duro / 2.3 Racing / 2.5 Hookworm / 3.0 Gazz) (in order by
preference)
Nimbus frame (for sidewall mud clearence)
Alex DX32 rim (it's great, ignore the naysayers)
14 gage spokes
Profile hub and cranks
Eastern BMX pedals
(air seat, other features yadda yadda)

I love my setup, but I also get an occassional longing for the benefits
of a 26" . . . . especially today when I was spinning along at 6.1 mph
with a bike on a flat dirt road.

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well, if you're doing technical steep downhill, you probably want a 24".
at least, that's what I would think. I don't know much about brakes, but
I think you probably could go with 150 cranks for this since you're
doing a brake.

oh, on the rim debate: sun doublewide is wider than the KH freeride.

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Depends what kind of 26" we're talking, loosemoose's 26" has a bigger
roll-out than a 28" road uni, and with the 140 cranks on really wouldn't
be suitable for rough downhill, even with a brake. I rode 24" with 152s
for quite a while and it's very handleable downhill, i could do
everything i can do now on 170s, but hit more speed on the straights, so
i reckon 150s on a moderate size 26" would be good, incidently
apparently the Duro is better than the Gazz for downhill, the gazz is
more for climbing, although that's not from personal experience. Four
out of six of my group run the Alex DX-32, never any problems as a rim
on its own but we have had problems with brakes on DX-32s, alex had to
constantly rebend his rim to stop it scuffing the brake pads, to the
extent he ditched the brake, it ended up on a dirt surfer. Anyway back
to the point, mayb not the DX-32 if you're going to be heavily on the
brake.

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The KH rim is burly as hell and wider than the Alex DX32. Bikers are
using it on high-end DH bikes now, too.

In summary, it's awesome. Sounds like you're going to end up building a
freeride if you want your bearings to fit.

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for DH, you should get a Surly Large Marge 24" rim.
You can go to www.livewireunicycles.com
he can build you a surly rim w/ KH hub for around $450 i think
his wheel builds are SUPER strong
then you can get a KH aluminum frame from bedford
THAT would be the ultimate

don't get a sun double wide, because it is designed for disc brakes, and
a magura wouldn't work well on it

http://www.livewireunicycles.com/Margin%20Wheels.htm

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Okay well thank you all VERY much, I think i've finnaly made up my mind
about alot of the parts on the uni, especialy one of my biggest
questions, the cranks, It looks like i'm going 150's, but I'd really
like some input from people that OWN 26" If there isn't a substantial
benifit, I may just buy a free ride, since that is almost identical to
what I want anyways, and i'd save alot of cash.

But i've heard good things about 26" munis from owners, and if I could
i'd like to here some more comments from owners, given my situation.

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You want a 24" for more technical downhill. As I suppose you will ride😄

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Fuego said:

*oh, on the rim debate: sun doublewide is wider than the KH freeride.
*

No it is not. The Sun Doublewide is not that wide. It is only 33mm
wide inside the rim between the bead hooks. It is, however, very wide
on the outside at 45.9mm, but that's not where the tire sits. The
Doublewide is effectively 33mm wide as far as the tire is concerned.

The Alex DX 32 is 32mm wide between the bead hooks.

The KH Freeride rim is listed at 42.2mm wide at Unicycle.com. I assume
that is the outside width. I don't know what the inside width is, but
it's going to be more than 33mm.

Here's the cross section for the Sun Doublewide:

+----------------------------------------------------------------+
| Attachment filename: sundblwide.gif |
|Download attachment: http://www.unicyclist.com/attachment/343708|
+----------------------------------------------------------------+

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id say get a 24 inch because it is easier to control on downhills,
weighs less, and is better for climbing hills. the 2 inch diffrence in
speed wont matter 2 much because if u ride with other people, chances
are they have a 24 also because 24s are much more common.

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john_childs said:

*
The KH Freeride rim is listed at 42.2mm wide at Unicycle.com. I
assume that is the outside width. I don't know what the inside width
is, but it's going to be more than 33mm.

*

www.krisholm.com says it has an ID of 35.0mm, OD of 42.2mm. Theres a
diagram but I cant get the mouse over it to save it.

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forrestunifreak said:

*www.krisholm.com says it has an ID of 35.0mm, OD of 42.2mm. Theres a
diagram but I cant get the mouse over it to save it. *

I got a screenshot. The text in the graphics is not too clear, but if
you zoom in they're easier to read.

KH Freeride rim:
- outside width 42.2mm
- inside width 35.0mm

KH XC rim:
- outside width 38.0mm
- inside width 30.8mm

+----------------------------------------------------------------+
| Attachment filename: kh_rims.gif |
|Download attachment: http://www.unicyclist.com/attachment/343722|
+----------------------------------------------------------------+

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cyberpunk said:

*Which is a fair diffrence, but nothing extravogant, but I 26" rim
also has more ground coverage, and hits bumps, ect, at a lower angle.
I dunno, i'm just totaly torn.... PLEASE HELP! *

I also have this concern (which is why I posted the 24" vs 26"
thread).
I have a desire for more speed, but I'm not sure that a 26" would offer
enough.
I think that a 26" would roll down the hill better, for example when a
rock "stair" is slanted upwards (perpendicular to the trial) it causes a
lot of UPDs for the 24" that I think the 26" could take in stride.
(There's a need for a tad bit more rolling ability, offered by a bigger
diameter).

My problem isn't just that I want the benefits that I listed, but I'd
like to be able to hit and hold 9 mph on the same trails that I am
taking on the 24"

Anytime I am on terrain that isn't immediately extreme, I get to
thinking I need a faster setup. (I don't enjoy spinning for the sake of
spinning).

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