Tryall rims...

Those big holes are for tubeless spokes, right? That does
look good, though. Do they come in 24"?

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gerblefranklin

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Those look a lot like Snow Cat rims. If so, they won't be up
to the rigors of trials--but great on snow and other
extremely low pressure activities. They are single wall
constructions? Those holes will compromize some important
strength for trials.

David Maxfield Mitchell, SD

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David Maxfield
Mitchell, SD
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My concern would be that the holes would fill up with
water and dirt.

Will the strapping tape be able to seal the rim even when it
gets wet and dirty?

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One negative, IMHO, is the holes. Strapping tape would only
keep it out of the tire, I wouldn't be able to seal the
outer holes. Water crossings more than a couple of inches,
deep mud, and snow would probably best be avoided. I don't
see much of this with all the riding I did this summer. Most
trails close around here when wet. I had a long talk awhile
ago with the Snowcat people. Snowcat rims are single walled,
thats why they wouldn't be good for our sport. Anybody
remember Sun's Fat Albert rim? Small rocks could easily dent
those rims. Tryalls are double walled without spoke eyelets.
As for the sizes, according to the website, 19"/20" and 26".
I noticed a huge difference when I swithed to tubeless.
Losing a pound of rotational weight made me climb much
faster and can throw it around easier. The rim I'm using now
(Azonic Momentum DH) weighs a ton (1136 grams). Losing just
shy of another pound will be an experiment to see how it
rides. If it doesn't work out, I can still fall back to the
original rim, it dies help to build you own wheels (thats
for sure).

--
Dirtsurfer - Singlewheel/Singletrack

"All we have to decide is what to do with the time that is given to us."
Gandalf the gray
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while the holes make it lighter, they also weaken the rim.
so watch out.

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muniracer - Hell On Wheel

The Hell on Wheel Unicycle Gang owns you!!

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Those holes are for weight savins only. they provide no
actuall purpose other than to substantially weaken your rim
and guarantee premature failure. Also rims with pins and no
welds should be illegal. make sure to lace the rim so that
it's pulling the seam together, not apart.

Japanese and euro trials guys all use drilled rims as well
as drill brake levers, pedals, some even cut every other
knobby of of their tires. they get totally stupid about
saving weight. the secret thing is that they only use these
parts in competition and may only get a few uses out of each
part, but they get them for free so it doesnt matter.

For urban trails and general riding only the lightest,
smoothest riders i know have ever had success with such
drastically drilled rims. and they have two wheels and alot
more bike to use as leverage to finess landings.

I would not reccomned any uni riders using drilled rims,
even for competition... they just have to take so much more
load than they were intended for.

Hope that if you already purchased these that they work out
for you, but you may want to looking into getting a full
face helmet.

--
SEMPER_UNI - Alethes Cycling

Michael S. Pritchett
Alethes Cycling

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Nice comments, semper.

But...

Quoted message said:

Also rims with pins and no welds should be illegal. make
sure to lace the rim so that it's pulling the seam
together, not apart.

..how the heck could you do that?

--
U-Turn - There has got to be a better way...

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'Strongest Coker Wheel in the World'
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I assumed he was saying don't put the seam in the part of
the spoking pattern where the gap is. You know, the place
you usually put the valve. Is this right?

Andrew

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U-Turn said:

*Nice comments, semper.

But... ...how the heck could you do that? *

How the heck could you not do that? Won't the spokes always
pull together on any part of the rim?

--
Borges - High impact cerabellum workout

"Getting caught wearing this helmet may result in death by hanging"
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alright, you got me...

yes the spokes all pull the wheel towards the center of the
hub, keeping a constant inward radial force always pulling
the seam together.

But wheels are generally laced tangentially, where each
spoke pulls at an angle to the wheels radius...

The gap area that is created when using a crossed spoke
pattern has three or four spokes that pull almost parallel
to each other. the four spokes on either side of the gap
all pull at more of an angle inward, towards each other and
would exert a small amount of force that would pull the
seam together.

I suppose there really wouldn't be a huge difference seeing
that there are thousands of pounds of tension created by all
the spokes pulling the rim inward.

I still don't like things that are pinned, maybe they
shouldn't be illegal, but i think you should need a license
to own them, like a gun.

--
SEMPER_UNI - Alethes Cycling

Michael S. Pritchett
Alethes Cycling

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Thanks for the comments. I have taken them into
consideration. Though I own a full face helmet, I don't
think I will be using it. I have to agree that I, too, don't
like pinned rims. In this case, theres not much of a choice.

SEMPER: Some friends (Non uni riders) are planning a
gathering in southern Michigan that I plan to attend (with
my uni). Details:
forums.mtbr.comshowthread.phpOpen ↗ . I'm planning
on doing Saturday at Yankee Springs then driving home. If
this rim survives, you're welcome to come check it out.
Bring your uni and come ride.

--
Dirtsurfer - Singlewheel/Singletrack

"All we have to decide is what to do with the time that is given to us."
Gandalf the gray
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I rode trials with some bikers last night, and both of them
were using drilled rims, and one had the exact same rim as
described here. I saw him bottom out his rim about 8 times
on some 6-8' gaps, and not a single complaint. That doesn't
seem that bad.

--
gerblefranklin

I don't break equipment, I make it cheaper.
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