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Old 2004-12-29, 07:39 PM   #1
joe
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Broken: New KH 20" rim

Could this be the first?

Aaron (pluto) succesfully broke the rim of his new KH Trials yesterday.

He jumped off a foot high wall, and rimed it. The side wall has came apart, where the join is, which runs all the way round.

The pics didnt come out very well, but here is one:


You have been warned...


Joe,
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Old 2004-12-29, 07:44 PM   #2
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how bad did he land that? how low was his tire? if his tire was super low and he landed at a strong angle i could see that happening. if not um, warranty?
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Old 2004-12-29, 07:46 PM   #3
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most likely the angle that did it... along with a low pressure


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Old 2004-12-29, 08:14 PM   #4
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Im amazed he was able to clip his rim on the ledge, wone ould think that the tyre would dtop you but I guess not...
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Old 2004-12-30, 08:22 AM   #5
Cumbria_Muni&Trials_Club
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Catboy, Aaron apparently did not catch the rim on the corner of the ledge and markf, the angle was not extreme.

The drop was witnessed by Joe Baxter, Rick Else and Kyle Metcalfe. I examined the rim immediately afterwards and there were no impact marks on it, the tyre was still inflated and the rim was immaculate apart from the split.

It was as if the sidewall had been pushed out and split from the rim by the sideways tyre pressure upon landing - however, improbable that sounds!!

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Old 2004-12-30, 08:41 AM   #6
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Do you know what actually caused this, and if the rim is repairable?
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Old 2004-12-30, 08:43 AM   #7
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That doesn't look like much fun at all!

So the story goes that the rim did not hit through the tire because of too low of an air pressure?

If that's the case...
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Old 2004-12-30, 09:28 AM   #8
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Ouch... I was just gonna order one, but thats made me hesitate... Think i'll hold back until we hear from Kris about this.
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Old 2004-12-30, 09:51 AM   #9
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double ouch, i already ordered mine three days ago.
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Old 2004-12-30, 10:38 AM   #10
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Quote:
Originally posted by Catboy
Im amazed he was able to clip his rim on the ledge,
it wasnt caught on the ledge. It happened as he landed


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Old 2004-12-30, 03:43 PM   #11
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Re: Broken: New KH 20" rim

"Cumbria_Muni&amp;Trials_Club" <Cumbria_MuniampTrials_Club@NoEmail.Message.Poster.at.Unicyclist.com> writes:

> It was as if the sidewall had been pushed out and split from the rim by
> the sideways tyre pressure upon landing - however, improbable that
> sounds!!


Looks to me like the tire bottomed out so the force of the landing was
transferred to the rim through layers of tire and tube (but not air).
Still, rims don't usually bend easily. I wonder if there is a problem
with improper heat treatment.

There isn't much increase in pressure from compressing a tire,
percentage-wise. It is doubtful that air pressure would cause this.

Ken
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Old 2004-12-30, 08:38 PM   #12
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the one thing I have learned about new products is there wil always be a someone who buys it before everyone else so find out who bought and then find out the details about it so you know if its good or not


p.s like i said before its all new product it still has time to be perfected just show the rim to kris and tell him the truth on what happend and see what he can do because kris would not make crap products also put some damn air in your tire and it would not happen
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Old 2004-12-30, 09:34 PM   #13
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sounds like a faulty rim. should be simple warranty then if the angle was not huge and its just a fluke. probably has some weird manufacturing defect. let us know how the warranty process works.
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Old 2004-12-30, 10:12 PM   #14
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It was my usual tyre presure, a little on the low side but not very low, about 25 PSI, that should never cause what happened and I dont even weigh much! Seems dodgy to me, I've done at least 6ft on my old ALEX rim with the same pressure and similar landings i.e not smooth landings, and it's been fine. This was a faulty rim, no doubt about it.
Aaron
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Old 2004-12-31, 10:32 AM   #15
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Woo Hoo

Go Aaron!!

Hardcore!

Good work that man.

Don't worry about it being a dud rim or that, be proud of the fact that you broke a KH rim. I would be!

Take it easy, man.

P.S I broke my big toe at Mabie!

Thomas.
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