rec.sport.unicycling · Public discussion

Just finished Nimbus Stealth 36" wheel build and Nightrider tire

brycer1968 · 2008-03-01T10:50:31+00:00

I just finished building a 36" wheel for a friend using the UDC's new Stealth rim, 14 g ss spokes, new Nightrider tire and UDC ex wide hub. I love the new tire. Its a total win compared to the Wheel TA and Coker tire. Its the first 36er tire I have seen that looks was made in a real bike tire factory -in this century . . . and not like some factory second from the rick shaw tire retreading industry! The tire mounted easily (even with the 29er tube I use) and the bead centered really quickly at under 20 pounds with no blow-offs. I had a couple of thoughts about the rim. Feel free to post your thoughts on this: The Good: 1. The pinned joint is great. No bumpy weld like on the Airfoil 2. The rim is less deep than an Airfoil, requiring you to build a 3-cross wheel with these components. I loke 4-cross better for 36ers, but a small concession really. Eyelets are perfectly sized for the nipples that come with the UDC ss spokes. 3. The wheel went together smoothly and trued up nicely. The Bad: Initially, I really liked the look of the "machined" braking surface . . . . . until I finally laced it up gave the wheel a spin in the truing stand and saw that the machined braking surface was horribly unevenly ground away!! :eek: . . . creating big valleys and hills that actually made it harder to true the wheel. Some of the variations were around 2-3mm. It looks like a blind monkey with ADHD and a case of the shakes got a hold of an electric disk sander and went on a grinding rampage at the Nimbus factory. For those using a brake, it makes the rim a LOT less useful and kind of a shame that it mars an otherwise nice product. My friend runs without a brake, so I couldn't tell how much this would effect brake performance. If I were UDC, I'd get after the nimbus matal finishers to upgrade to the 21st century or at least plan to offer customers the choice of virgin or "machined" brake surface so we can machine them ourselves . . . . or talk to Scott Wallis and U-turn to find out if they will show you how they machine an Airfoil's braking surface. Brycer1968 -- brycer1968 ------------------------------------------------------------------------ brycer1968's Profile: http://www.unicyclist.com/profile/11311 View this thread: http://www.unicyclist.com/thread/68096 Posted Via Usenet.com Premium Usenet Newsgroup Services ---------------------------------------------------------- ** SPEED ** RETENTION ** COMPLETION ** ANONYMITY ** ---------------------------------------------------------- http://www.usenet.com

Started by brycer1968 · 1 March 2008 · Last activity 2 April 2008 · 9 posts · 315 views

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01 / Original postJust finished Nimbus Stealth 36" wheel build and Nightrider tirebrycer1968 · 1 Mar 2008 02 / This pagePosts 1–9Page 1 of 1 · chronological order 03 / Latest replyPost #9Borgschulze · 2 Apr 2008

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Original section: rec.sport.unicycling
Published: 1 March 2008
Last activity: 2 April 2008
Original author: brycer1968
Posts: 9
Discussion status: Public discussion
Total views: 315
Views / 30 days: 0
Topics: Wheel building Wheel truing

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Original post
brycer1968
Archived post

1 March 2008, 10:50 UTC #1

I just finished building a 36" wheel for a friend using the UDC's new
Stealth rim, 14 g ss spokes, new Nightrider tire and UDC ex wide hub.
I love the new tire. Its a total win compared to the Wheel TA and
Coker tire. Its the first 36er tire I have seen that looks was made in
a real bike tire factory -in this century . . . and not like some
factory second from the rick shaw tire retreading industry! The tire
mounted easily (even with the 29er tube I use) and the bead centered
really quickly at under 20 pounds with no blow-offs.
I had a couple of thoughts about the rim. Feel free to post your
thoughts on this:
The Good:
1. The pinned joint is great. No bumpy weld like on the Airfoil
2. The rim is less deep than an Airfoil, requiring you to build a
3-cross wheel with these components. I loke 4-cross better for 36ers,
but a small concession really. Eyelets are perfectly sized for the
nipples that come with the UDC ss spokes.
3. The wheel went together smoothly and trued up nicely.
The Bad:
Initially, I really liked the look of the "machined" braking surface .
. . . . until I finally laced it up gave the wheel a spin in the truing
stand and saw that the machined braking surface was horribly unevenly
ground away!! :eek: . . . creating big valleys and hills that actually
made it harder to true the wheel. Some of the variations were around
2-3mm. It looks like a blind monkey with ADHD and a case of the shakes
got a hold of an electric disk sander and went on a grinding rampage at
the Nimbus factory.
For those using a brake, it makes the rim a LOT less useful and kind of
a shame that it mars an otherwise nice product. My friend runs without
a brake, so I couldn't tell how much this would effect brake
performance. If I were UDC, I'd get after the nimbus matal finishers
to upgrade to the 21st century or at least plan to offer customers the
choice of virgin or "machined" brake surface so we can machine them
ourselves . . . . or talk to Scott Wallis and U-turn to find out if
they will show you how they machine an Airfoil's braking surface.
Brycer1968
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Brian O.
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1 March 2008, 10:59 UTC #2

Thanks for that, it was an interesting read. As for offering an
unmachined sidewall version - they do. The Stealth Pro Rim has the
machined sidewalls and eyelets whereas the basic Stealth Rim has normal
sidewalls and no eyelets.
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brycer1968
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1 March 2008, 11:07 UTC #3

Doouugh! . . . .I didn't see that option at UDC and I generally like
eyelets. Its that Tiawanese monkey with the grinder thats gotta be
stopped.
Brycer1968
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boisei
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1 March 2008, 18:09 UTC #4

I don't know what a phone call to UDC would come up with, but in their
online catalog only the Stealth Pro is available as a standalone rim.
I'm not as handy as Brycer1968, so I never would have thought have
machining my own braking surface!
Thanks Brycer1968. Can't wait to ride such a light wheel!
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boo radley
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1 April 2008, 03:43 UTC #5

Now the rims are powdercoated white... I wonder what was wrong with the
black anodized finish.
http://www.unicycle.com/shopping/shopexd.asp?id=1196
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corbin
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1 April 2008, 19:54 UTC #6

brycer1968 said:

Initially, I really liked the look of the "machined" braking surface .
. . . . Brycer1968
I haven't noticed any of these problems with the rim I got.
corbin
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osmundo
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1 April 2008, 21:44 UTC #7

Mine looks great too.
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saskatchewanian
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1 April 2008, 22:38 UTC #8

brycer1968 said:
....big valleys and hills that actually made it harder to true the
wheel. Some of the variations were around 2-3mm. It looks like a
blind monkey with ADHD and a case of the shakes got a hold of an
electric disk sander and went on a grinding rampage at the Nimbus
factory.
I seriously doublt that the skin is much more than 2-3mm thick in the
first place. Which would make 3mm variations nearly impossible, are you
sure it was the grind, not the build?
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Borgschulze
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2 April 2008, 04:52 UTC #9

I'd love to see how low quality this extrusion machine is that is making
rims that can take 3mm variations in grinding depth.
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