Why did my tire explode?

Hmmmm I Have No Idea. There Arent Any Spokes Pokin Thru To Where The
Tube Would Be??

--
MarshallStangle2005 - ~ City Skate Park Uni Grind King~
------------------------------------------------------------------------
MarshallStangle2005's Profile: http://www.unicyclist.com/profile/9274
View this thread: http://www.unicyclist.com/thread/38176

We've seen several incidents like yours. Mostly it happens to the
plastic rimmed unicycles but we've seen some steel rim incidents as
well. If the tire bead slips from the rim, the tube will force its way
through the gap and explode. When mounting the tire, always ensure that
the rim bead is seated properly. Usually there is a line around the
perimeter of the tire that can be used to align the tire on the rim.

Your situation may be something entirely different. Let us know what
you find out.

Bruce

--
yoopers - Bruce & Mary Edwards

Of professional wrestling, Sarah Miller says, "The competition element
is all part of the "plot"..."Its pantomime in lycra."
------------------------------------------------------------------------
yoopers's Profile: http://www.unicyclist.com/profile/31
View this thread: http://www.unicyclist.com/thread/38176

yoopers said:

*Your situation may be something entirely different. Let us know what
you find out.

Bruce *

Well, I'm not likely to find out anything anymore...I bought a new tube
and put it on this afternoon, and threw away the last one.

Didn't think I'd be putting money into a new uni 2 days after getting
it, but oh well.

If it happens again, I'm getting one of those solid foam
airless/tubeless tires someone posted a few days ago.

I brought it to the bike shop where I got the tube and showed
them...they had no idea, either.

--
Skippii - Kingpin, One for the Road

One for the Road: Harrisonburg's Unicycle gang.
------------------------------------------------------------------------
Skippii's Profile: http://www.unicyclist.com/profile/7822
View this thread: http://www.unicyclist.com/thread/38176

yeah, your tyre just crept off the rim. make sure its well seated next
time you pump it up.

OR

the cheap Sun rim could not have a good enough hook on it to hold on the
tyre recomended pressure.

--
jagur - Random Unicyclist

Smoke me a kipper, I'll be back for breakfast.
---------------------------------------------------
-forget_your_life-
--------------------------------------
-------*muni militia *-------
*one wheeled death squad*
------------------------------------------------------------------------
jagur's Profile: http://www.unicyclist.com/profile/502
View this thread: http://www.unicyclist.com/thread/38176

What is a hook?
I don't know much about cycles.

--
Skippii - Kingpin, One for the Road

One for the Road: Harrisonburg's Unicycle gang.
------------------------------------------------------------------------
Skippii's Profile: http://www.unicyclist.com/profile/7822
View this thread: http://www.unicyclist.com/thread/38176

The tire has a lip where it fits onto the rim bead. Which is a lip
also,only inward facing. The opposing lips form the seal that keeps the
tube inside the tire. If your concerned that your tire is improperly
installed. Let all of the air out of it. Pinching the tire between your
thumb and forefinger. Rock the tire back and forth inside the rim then
reinflate. This should help. If it doesn't.
Your tire might not fit the rim.
The bead may still not be seated properly.
Your adding too much air pressure.
Are you using a gauge?

--
unidad

Just discovered this new adventure!
------------------------------------------------------------------------
unidad's Profile: http://www.unicyclist.com/profile/8151
View this thread: http://www.unicyclist.com/thread/38176

Skippii said:

*What is a hook?
I don't know much about cycles. *

Jag's talking about the way the tire bead hooks onto or under the rim
bead.

--
yoopers - Bruce & Mary Edwards

Of professional wrestling, Sarah Miller says, "The competition element
is all part of the "plot"..."Its pantomime in lycra."
------------------------------------------------------------------------
yoopers's Profile: http://www.unicyclist.com/profile/31
View this thread: http://www.unicyclist.com/thread/38176

Skippii said:

*What is a hook?
I don't know much about cycles. *

read these.
http://www.sheldonbrown.com/brandt/blowouts.html

http://www.sheldonbrown.com/flats.html

--
jagur - Random Unicyclist

Smoke me a kipper, I'll be back for breakfast.
---------------------------------------------------
-forget_your_life-
--------------------------------------
-------*muni militia *-------
*one wheeled death squad*
------------------------------------------------------------------------
jagur's Profile: http://www.unicyclist.com/profile/502
View this thread: http://www.unicyclist.com/thread/38176

I'll tell you why because you touch yourself at night hahahahahahaha oh
Family guy is the best show ever

--
brockfisher05 - RIDE TRIALS

DO YOU LIKE YAMS BECAUSE I SURE DO!

ADD ME AT: [email hidden]

check out my gallery at :
http://gallery.vanuni.com/thumbnails.php?album=6
------------------------------------------------------------------------
brockfisher05's Profile: http://www.unicyclist.com/profile/8363
View this thread: http://www.unicyclist.com/thread/38176

Ah...I get it.
Cool, and thanks for the links.

--
Skippii - Kingpin, One for the Road

One for the Road: Harrisonburg's Unicycle gang.
------------------------------------------------------------------------
Skippii's Profile: http://www.unicyclist.com/profile/7822
View this thread: http://www.unicyclist.com/thread/38176

My sun 28" tire blew out the 2nd day for me as well. I was inflating
the tire, got to about 60 psi. Loudest noise I had heard in in 30
years. It sorta freaked me out. I've been cautious, gloves, safety
glasses and ear protection just to put air in that tire ever since.

I did find metal splinters around the spoke nuts and shavings in the
tire. Removed the splinters and replaced the rim tape before replacing
the tube.

The 28" been fun ever since. Good luck with your 28".

--
Chrashing - Just Lucky

Regards,
Chrashing
------------------------------------------------------------------------
Chrashing's Profile: http://www.unicyclist.com/profile/7501
View this thread: http://www.unicyclist.com/thread/38176

As others have pointed out, the tire bead comes off of the rim and the
tube comes out. Unrestricted by the tire, it begins to expand rapidly
(and usually catastrophically). In UniVerse 2 there is a sequence with
Jacinto hopping onto a rock in which this happens in a VERY LOW pressure
tire so the tube doesn't pop before it reaches equilibrium. It looks
like the Monty setup which was notorious for this problem.

A good approximation is that the energy contained in a properly inflated
tire is about the same as a round of .45ACP or a cherry bomb; something
of the order of a kilo-joule. That's why it sounds so loud, especially
in close quarters like your basement or garage. Acoustically it's enough
to damage your ears...and soil your underwear.

--
harper - Riding a Fat

-Greg Harper

B L U E S H I F T

JC is the ONLY main man. (except for Ken Looi)
------------------------------------------------------------------------
harper's Profile: http://www.unicyclist.com/profile/426
View this thread: http://www.unicyclist.com/thread/38176

harper said:

*As others have pointed out, the tire bead comes off of the rim and
the tube comes out. Unrestricted by the tire, it begins to expand
rapidly (and usually catastrophically). In UniVerse 2 there is a
sequence with Jacinto hopping onto a rock in which this happens in a
VERY LOW pressure tire so the tube doesn't pop before it reaches
equilibrium. It looks like the Monty setup which was notorious for
this problem.

A good approximation is that the energy contained in a properly
inflated tire is about the same as a round of .45ACP or a cherry bomb;
something of the order of a kilo-joule. That's why it sounds so loud,
especially in close quarters like your basement or garage.
Acoustically it's enough to damage your ears...and soil your
underwear. *

Ah...I have the U2 video, and always wondered why that was
happening...

I didn't know that there was so much energy in a tire!

--
Skippii - Kingpin, One for the Road

One for the Road: Harrisonburg's Unicycle gang.
------------------------------------------------------------------------
Skippii's Profile: http://www.unicyclist.com/profile/7822
View this thread: http://www.unicyclist.com/thread/38176

harper said:

*A good approximation is that the energy contained in a properly
inflated tire is about the same as a round of .45ACP *

yes, but no where near a .45LC or a .44MAG 😎

where yoopers? oh yeah he probobly likes the .308 or the 30-06

--
jagur - Random Unicyclist

Smoke me a kipper, I'll be back for breakfast.
---------------------------------------------------
-forget_your_life-
--------------------------------------
-------*muni militia *-------
*one wheeled death squad*
------------------------------------------------------------------------
jagur's Profile: http://www.unicyclist.com/profile/502
View this thread: http://www.unicyclist.com/thread/38176

jagur said:

*yes, but no where near a .45LC or a .44MAG

where yoopers? oh yeah he probobly likes the .308 or the 30-06 *

Or .454 Casull or .50AE for that matter if we're talking about pistol
rounds. The .308 and .30-06 are high powered rifle rounds. And I said of
ORDER one kilo-joule so 300 joules to 3 kilo-joules. I'll bet the rifle
rounds are in there somewhere.

Bruce would certainly go for the rifle, I think his was a .30-06 in the
picture. I don't know him to be much of a pistolero. He is undoubtedly
formidable with the rifle.

I had a 700cx25 at 90 psig go off about three feet away from me in my
basement. That was about 700 Joules. My ears were ringing for awhile
after that.

--
harper - Riding a Fat

-Greg Harper

B L U E S H I F T

JC is the ONLY main man. (except for Ken Looi)
------------------------------------------------------------------------
harper's Profile: http://www.unicyclist.com/profile/426
View this thread: http://www.unicyclist.com/thread/38176

harper said:

* The .308 and .30-06 are high powered rifle rounds. *

yes, that what ment when i mentioned Yoopers...when that mans tyre
blows there is much more addes joules therefor the referance not to
mention the pic that i cant dig up tonite. to much 50cal sabot loading
for me tonite.

--
jagur - Random Unicyclist

Smoke me a kipper, I'll be back for breakfast.
---------------------------------------------------
-forget_your_life-
--------------------------------------
-------*muni militia *-------
*one wheeled death squad*
------------------------------------------------------------------------
jagur's Profile: http://www.unicyclist.com/profile/502
View this thread: http://www.unicyclist.com/thread/38176

Exactly the same thing happened to me.

I had just bought my 24" Nimbus the same day. I assembeled it (with some
help from my father). I Rode it around a bit. I couldn´t ride very good
back then, something like 5 revolutions. I leaned it to a wall beacuse
it was time for dinner.
And then suddenly A very load noice is heard, like a gunshot 😉.
Everybody thought someone were shooting in our backyard. But then we
realiced it was thu unicycles tire that had exploded! Yikes!!!

But we called unicycle.se and we got a brand new tire and a new tube the
following day.
😎

--
fexnix - Level 4 here i come!

Recycle your Unicycle!
------------------------------------------------------------------------
fexnix's Profile: http://www.unicyclist.com/profile/7381
View this thread: http://www.unicyclist.com/thread/38176

No blowouts for me (yet).

I've had a couple of pinch flats when I ran my Nimbus X freestyle's
'Maxxis Hookworm 20\" tyre' (http://tinyurl.com/5yqhs) at about 40-50
PSI. I read that pinch flats were often caused by lower-than-recommended
tyre pressure, so I had a look at the recommended pressure for my
tyre...

85-110 PSI! :eek:

...it is a real burden for me to inflate it that hard. Above 70 or so my
twin-barrelled car tyre foot pump starks to creak, I have to really jump
with all my weight on it, and the PSI gauge needle gets slower and
slower towards the target of ninety PSI.

What should be a simple and painless procedure to top up the tyre
pressure strikes fear into me, especially now I've read these tales of
tyres exploding on their own.

I've read about tyre pressures for Muni and Trials (which I don't do
yet) being never more than about 35 PSI, so why does this particular
tyre require such a ridiculously high pressure?

--
gkmac - Never rides in public
------------------------------------------------------------------------
gkmac's Profile: http://www.unicyclist.com/profile/4577
View this thread: http://www.unicyclist.com/thread/38176

jagur said:

*yes, but no where near a .45LC or a .44MAG 😎

where yoopers? oh yeah he probobly likes the .308 or the 30-06 *

You all know me too well. 🙂

--
yoopers - Bruce & Mary Edwards

Of professional wrestling, Sarah Miller says, "The competition element
is all part of the "plot"..."Its pantomime in lycra."
------------------------------------------------------------------------
yoopers's Profile: http://www.unicyclist.com/profile/31
View this thread: http://www.unicyclist.com/thread/38176