10 PSI in front tire?

[Bokerfork]

Here's the story, as told by me.

I had Cycle Gear put a new PR2 on my front rim a few weeks back.

As usual, I remounted the wheel, checked the air pressure and took it around the block once to scuff the sidewall.

Everything seemed good. Turn in was dramatically better with a properly radiussed crown and so I spent the next couple of weeks commuting to and from work.

Here's where the "what was I thinking part" comes in.

Everyday, the turn in got worse and worse. Dummy me just figured it was the newness wearing off.

Well, lo and behold I decided it was time to recheck the air pressure to make sure all was ok. 10 f'n psi!

Out comes the soap bottle to check for a bead leak only to find the leak was actually coming from the metal valve stem. Seems it had been loosened or had come loose in the last 2-4 weeks.

A quick air up and the PR2 is once again like new.

So for only the four thousanth time I remind myself,,,,, if something doesn't feel right, don't rationalize,,,,, check the sumbitch out.

May you learn form my mistakes. Lord knows I don't.

If this saves just one child, it will be worth it.

Mark

 

[RaYzerman19]

Glad you found it before it got worse. That's why I have a TPMS.

 

[escapefjrtist]

That thing musta handled like a dump truck with 10 psi in the front... :blink:

Thanks for sharing the experience, good reminder for all of us!

--G

 

[CAJW]

That thing musta handled like a dump truck with 10 psi in the front... :blink:

Thanks for sharing the experience, good reminder for all of us!

--G

Uh.. I think Mark drives a dump truck so handling might have been a bit subjective for him.

Here's where I get blasted for not inviting him to my most recent Yosemite ride.. Thinking his pal OM will be along soon with some wit to impart regarding his mea culpa.

 

[odot]

Does the dump truck have handle bars? Just curious.

 

[Bugnatr]

Ha, I was moving the Katoom yesterday and wondered why it was like turning the Hondapotamas. Checked the front and had 10 psi.

 

[SkooterG]

10 psi?!?!?!?!?!?!?!

ONCE I let my tire get down to 20 psi and it was obvious something was wrong. At 10 psi the thing should *look* practically flat!

Baaaaaad!

 

[lnewlf]

Way back when I was a rookie and didn't pay attention to tar pressure I turned my Yammie TX500 onto a side road at about 15 mph and the front tar came right off the rim and flopped around inside the fender. Ever since then I associate groin pain with tar pressure..

 

[Auburn]

1354071043[/url]' post='1019315']That thing musta handled like a dump truck with 10 psi in the front... :blink:

Thanks for sharing the experience, good reminder for all of us!

--G

I was thinking more like a plow. 10 psi in dirt bike front tire is kind a low. My dirt bike is usually at 13 psi front and 12 psi rear. But, I don't go highway speeds on it.

 

[beemerdons]

That thing musta handled like a dump truck with 10 psi in the front... :blink:

Thanks for sharing the experience, good reminder for all of us!

--G

Uh.. I think Mark drives a dump truck so handling might have been a bit subjective for him.

Here's where I get blasted for not inviting him to my most recent Yosemite ride.. Thinking his pal OM will be along soon with some wit to impart regarding his mea culpa.

So Mark, John and Doug: With Bokerfork riding around with only 10 psi in his front tire I take it that the Northern California Mota harvest ran a little late this year, inquiring minds do want to know!

 

[luvtoride]

Fairly recently I also had tires mounted @ Cycle Gear. Same thing... loose valve core.

 

[phroenips]

were you using a summer air blend, or the winter blend? That might explain it :assassin:

 

[Fly Bye]

were you using a summer air blend, or the winter blend? That might explain it :assassin:

Altitude or sea level?

 

[exskibum]

If you mount your own tires, you know that you always take the valve core out when you deflate the tire. Slam, bang and the thing is deflated. (Who presses down on the core's stem to let air escape until it's finally flat?) And you generally put the core back in after you have the new tire mounted on the wheel. I can't think of a good reason NOT to securely seat it when putting it back in, but that's almost certainly what happened here -- the shop guy didn't seat it firmly enough.

Easy enough to check with a valve core tool upon getting the bike back. If a newly mounted tire is leaking air, it's almost always either the valve or the tire bead isn't properly seated/sealed. Valve cores can fail, however, so for their minimal cost and tiny space requirements, it's a good idea to have an extra in your tool kit just in case (I had it happen once on my '97 Blackbird on a day ride 6 or 7 years ago).

 

[Auburn]

If you mount your own tires, you know that you always take the valve core out when you deflate the tire. Slam, bang and the thing is deflated. (Who presses down on the core's stem to let air escape until it's finally flat?) And you generally put the core back in after you have the new tire mounted on the wheel. I can't think of a good reason NOT to securely seat it when putting it back in, but that's almost certainly what happened here -- the shop guy didn't seat it firmly enough.

limp wristed?

 

[Bugnatr]

That thing musta handled like a dump truck with 10 psi in the front... :blink:

Thanks for sharing the experience, good reminder for all of us!

--G

Uh.. I think Mark drives a dump truck so handling might have been a bit subjective for him.

Here's where I get blasted for not inviting him to my most recent Yosemite ride.. Thinking his pal OM will be along soon with some wit to impart regarding his mea culpa.

So Mark, John and Doug: With Bokerfork riding around with only 10 psi in his front tire I take it that the Northern California Mota harvest ran a little late this year, inquiring minds do want to know!

:lol: :lol: Apparently it did.

 

[BkerChuck]

Wife says I have OCD but I check tire pressure in all of our vehicles at least once a month and in our bikes closer to every 2 weeks. I just don't feel right if I don't keep up this ritual.

 

[wheatonFJR]

Wife says I have OCD but I check tire pressure in all of our vehicles at least once a month and in our bikes closer to every 2 weeks. I just don't feel right if I don't keep up this ritual.

I check my tires every morning of my trip. (I only take trips...no commuting) I have, in the past, picked up sharp objects in the back tire that did not leak fast enough to be noticed during the ride, but had all night to deflate the tire. Low tire in the am...happened in SE Ohio this past May.

EDIT: I now know what a flat rear tire feels like. In NorCal, in May of 2011, my shocks seemed to be more bouncy than normal during a day ride. Turns out that I had a slow leak from metal puncture in the tire and had 16psi in the rear tire. (Was 42 psi in the am)

So bouncy rear with bad handling front means rear tire puncture to me.

The symptoms are a long ways from the sudden deflation on a tube type tire.

 

[exskibum]

EDIT: I now know what a flat rear tire feels like. In NorCal, in May of 2011, my shocks seemed to be more bouncy than normal during a day ride. Turns out that I had a slow leak from metal puncture in the tire and had 16psi in the rear tire. (Was 42 psi in the am)

I remember that. And standing around watching you and Highlander pump it up and fix it a couple or three times. For the spectators/supervisors eating an energy bar and having some water, it's not a bad excuse to stop and shoot the ****.