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Uncle Rico · 03-18-2008, 05:25 PM

So Im starting to descend Rock-it and BOOM, I blow my front tire. Part of the presta valve blew/ broke off. In 5 yrs of riding I have never seen this one.

I was riding my 29er rigid, front tire was about 28 psi, and Im about 205 w/ gear.

Im running new Flow rims and now I cant wait to put in the stans sealant and be done with tubes.

Can someone explain this one to me?

J_Sims · 03-18-2008, 05:27 PM

Nice Job Meng

... You are gonna love running No Tubes

station · 03-18-2008, 05:30 PM

How doies no tubes work if you get a flat?

mtbchip · 03-18-2008, 05:50 PM

Quote:

Originally Posted by station

How doies no tubes work if you get a flat?

Thats when you throw a tube in there and blow er up!

BeantownRider · 03-18-2008, 05:59 PM

I've done that one once before. Pretty sure I bent the valve stem while removing a pump then it failed later that ride. Not a fun one at all.

Flows rock by the way, but the valve stem is just as fra-gi-le as the one on a tube. Ideally, you should still carry a tube, keep forgetting to myself.

BoingBoing · 03-18-2008, 06:07 PM

I always assumed that valve stems busted when people were inflating their tubes. I guess I thought they were bending the stem somehow. BUT I KNOW that I am constantly knocking my spoke with small rocks. It seems like my tire catches the edge of a rock and it shoots up like a tiddly-wink--but with spin on it--so it flies back into the spokes.

Is it possible that this happened to you? And it hit your stem instead of spoke?

Just a thought...

Uncle Rico · 03-18-2008, 06:22 PM

Quote:

Originally Posted by BoingBoing

I always assumed that valve stems busted when people were inflating their tubes. I guess I thought they were bending the stem somehow. BUT I KNOW that I am constantly knocking my spoke with small rocks. It seems like my tire catches the edge of a rock and it shoots up like a tiddly-wink--but with spin on it--so it flies back into the spokes.

Is it possible that this happened to you? And it hit your stem instead of spoke?

Just a thought...

definitely possible, I had about 10 rides on the tube.

Ive damaged many valves attaching a pump. It seems Im always breaking things and I cant even count how many bolts Ive stripped.

BoingBoing · 03-18-2008, 06:33 PM

Quote:

Originally Posted by Uncle Rico

... and I cant even count how many bolts Ive stripped.

Just this morning I couldn't take a pedal off till I realized I was turning the wrong way!

bcblur · 03-18-2008, 07:39 PM

If it was in your pack for a while, it could have taken some damage or been bent in there.

Rockinthecasbah · 03-18-2008, 07:51 PM

it might have been bent or you might have had low enough air pressure for your tire to spin on the rim and pinch the valve

tkblazer · 03-18-2008, 08:05 PM

that happened to me last week on a climb... it sucked

northshore · 03-18-2008, 08:40 PM

Quote:

Originally Posted by BeantownRider

I've done that one once before. Pretty sure I bent the valve stem while removing a pump then it failed later that ride. Not a fun one at all.

Flows rock by the way, but the valve stem is just as fra-gi-le as the one on a tube. Ideally, you should still carry a tube, keep forgetting to myself.

+1 this is what happened to me at the Fully. Bent valve stem equals kaboom.

OMR · 03-18-2008, 08:54 PM

This was caused by teegers. These are small lizard like green mottled things that hide in the bushes and tall grass along side of the trail. They have claw like fingers and sharp teeth. A lot of times riders think that they have been sratched by a branch... not so, it's teegers. They particularily like to mess with valve stems. Because of the recent amount of rain we've had, the grass is much higher, which makes them more brave. Please keep an eye out for them when riding ... they can ruin a ride.

Brain 52 · 03-18-2008, 09:13 PM

Quote:

Originally Posted by BeantownRider

I've done that one once before. Pretty sure I bent the valve stem while removing a pump then it failed later that ride. Not a fun one at all.

Flows rock by the way, but the valve stem is just as fra-gi-le as the one on a tube. Ideally, you should still carry a tube, keep forgetting to myself.

I popped a presta valve on my road bike while I was inflating it. It caught me off guard, I thought I let the tube creep out from under the tire and it burst.

slowSSer · 03-19-2008, 02:26 PM

Quote:

Originally Posted by OMR

This was caused by teegers. These are small lizard like green mottled things that hide in the bushes and tall grass along side of the trail. They have claw like fingers and sharp teeth. A lot of times riders think that they have been sratched by a branch... not so, it's teegers. They particularily like to mess with valve stems. Because of the recent amount of rain we've had, the grass is much higher, which makes them more brave. Please keep an eye out for them when riding ... they can ruin a ride.

you're getting rather odd

CC · 03-19-2008, 02:37 PM

Could be that your rim tape need replacing. I was having this problem, but I was getting a hole at the bottom of the valve. Not sure, just a thought.

osmarandsara · 03-19-2008, 02:53 PM

Quote:

Originally Posted by slowSSer

you're getting rather odd

these things actually exist.......back in my country we call it a chupacabra

http://upsidedownhippo.com/archives/...-november1.jpg

slowSSer · 03-19-2008, 03:16 PM

Quote:

Originally Posted by osmarandsara

these things actually exist.......back in my country we call it a chupacabra

http://upsidedownhippo.com/archives/...-november1.jpg

i hate to admit it, but i'm familiar with el chupacabra

03-18-2008, 05:27 PM	#2 (permalink)
J_Sims P. W. R.	Nice Job Meng... You are gonna love running No Tubes __________________ Your actions speak so loud I can't hear a word your saying Big Thanks to ::: http://www.thepathbikeshop.com/

03-18-2008, 06:07 PM	#6 (permalink)
BoingBoing Car pay DM	I always assumed that valve stems busted when people were inflating their tubes. I guess I thought they were bending the stem somehow. BUT I KNOW that I am constantly knocking my spoke with small rocks. It seems like my tire catches the edge of a rock and it shoots up like a tiddly-wink--but with spin on it--so it flies back into the spokes. Is it possible that this happened to you? And it hit your stem instead of spoke? Just a thought... __________________ That feeling? That's just pain. Keep pedaling.

03-18-2008, 07:51 PM	#10 (permalink)
Rockinthecasbah _____	it might have been bent or you might have had low enough air pressure for your tire to spin on the rim and pinch the valve __________________

03-18-2008, 08:05 PM	#11 (permalink)
tkblazer Ruining It For The 95%	that happened to me last week on a climb... it sucked __________________ Geronimo: I think I could probably spend all day exporing Dell Painfreak: Dstepper turned me on

03-19-2008, 02:37 PM	#16 (permalink)
CC V.P. Kickstand Inspection	Could be that your rim tape need replacing. I was having this problem, but I was getting a hole at the bottom of the valve. Not sure, just a thought. __________________ "To travel by bicycle is a humble, nonagressive way to get close to people. It is a way of saying we are passing through with no thought of invasion or conquest, only the simple will to share a part of the road...Claude Herve, cycled around the world

03-18-2008, 05:30 PM	#3 (permalink)
station Is this thing on?	How doies no tubes work if you get a flat?

03-18-2008, 05:59 PM	#5 (permalink)
BeantownRider Senior Member	I've done that one once before. Pretty sure I bent the valve stem while removing a pump then it failed later that ride. Not a fun one at all. Flows rock by the way, but the valve stem is just as fra-gi-le as the one on a tube. Ideally, you should still carry a tube, keep forgetting to myself.

03-18-2008, 07:39 PM	#9 (permalink)
bcblur Member	If it was in your pack for a while, it could have taken some damage or been bent in there.

03-18-2008, 08:54 PM	#13 (permalink)
OMR	Actually, Grasshopper Dale.... This was caused by teegers. These are small lizard like green mottled things that hide in the bushes and tall grass along side of the trail. They have claw like fingers and sharp teeth. A lot of times riders think that they have been sratched by a branch... not so, it's teegers. They particularily like to mess with valve stems. Because of the recent amount of rain we've had, the grass is much higher, which makes them more brave. Please keep an eye out for them when riding ... they can ruin a ride. __________________ OMR .... An elder grasshopper of the Tribe The journey is the thing .... ride like it's your last one...

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