Tire question

[Hell And High Water]

(Makes me miss Sheldon)


I changed out my tube the other day, and when I was done I spun the tire
to check it out.

There seemed to be a small dip or flat spot in one area.


I deflated the tire, tried again, still the low spot.


I tried partially inflating the tube then rolling the tire on the ground
to spread the tire around. Still the low spot.


I tried to slightly over-inflate the tire, still the spot.



I gave up and left the bike on the stand.


Came back the next day to start again, spun the tire, and it was
perfectly round. As I looked on the tire from the saddle there was
virtually NO variance as the tire spun around.


1. Any suggestions on how to avoid the high or low spot when changing a
tube?

2. Any idea what happened to the tire over night to make it 'round
out?'



Dunk a shane,

-Bob

[carlfogel@comcast.net]

On Fri, 28 Mar 2008 15:45:48 -0500, Hell And High Water
<bob.remove.helland@att.net> wrote:

>(Makes me miss Sheldon)
>
>I changed out my tube the other day, and when I was done I spun the tire
>to check it out.

>There seemed to be a small dip or flat spot in one area.
>
>I deflated the tire, tried again, still the low spot.
>
>I tried partially inflating the tube then rolling the tire on the ground
>to spread the tire around. Still the low spot.
>
>I tried to slightly over-inflate the tire, still the spot.
>
>I gave up and left the bike on the stand.
>
>Came back the next day to start again, spun the tire, and it was
>perfectly round. As I looked on the tire from the saddle there was
>virtually NO variance as the tire spun around.
>
>1. Any suggestions on how to avoid the high or low spot when changing a
>tube?
>
>2. Any idea what happened to the tire over night to make it 'round
>out?'
>
>Dunk a shane,
>
>-Bob

Dear Bob,

Overnight, the tire bead slowly crept out under pressure, despite the
friction of the bead on the inside of the rim.

Cheers,

Carl Fogel

[A Muzi]

Hell And High Water wrote:
> (Makes me miss Sheldon)
> I changed out my tube the other day, and when I was done I spun the
tire
> to check it out.
> There seemed to be a small dip or flat spot in one area.
> I deflated the tire, tried again, still the low spot.
> I tried partially inflating the tube then rolling the tire on the ground
> to spread the tire around. Still the low spot.
> I tried to slightly over-inflate the tire, still the spot.
> I gave up and left the bike on the stand.
> Came back the next day to start again, spun the tire, and it was
> perfectly round. As I looked on the tire from the saddle there was
> virtually NO variance as the tire spun around.
> 1. Any suggestions on how to avoid the high or low spot when changing a
> tube?
> 2. Any idea what happened to the tire over night to make it 'round
> out?'

Either just grab it in your hands and pull the tire up to seat properly
or remove it, spray with spray wax and remount it.
At least your story had a happy ending.
Do always spin a clincher to ensure the molded lip just above the brake
track is even and visible all around before inflating to full pressure.
--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

[alanstew@sbcglobal.net]

On Mar 28, 12:45*pm, Hell And High Water <bob.remove.hell...@att.net>
wrote:
> Dunk a shane,

Shane MacGowan, yeah?
ABS

[datakoll]

On Mar 28, 10:35*pm, A Muzi <a...@yellowjersey.org> wrote:
> Hell And High Water wrote:> (Makes me miss Sheldon)
>
> * > I changed out my tube the other day, and when I was done I spun the
> tire> to check it out.
> > There seemed to be a small dip or flat spot in one area.
>
> * > I deflated the tire, tried again, still the low spot.
>
> > I tried partially inflating the tube then rolling the tire on the ground
> > to spread the tire around. *Still the low spot.
> > I tried to slightly over-inflate the tire, still the spot.
> > I gave up and left the bike on the stand.
> > Came back the next day to start again, spun the tire, and it was
> > perfectly round. *As I looked on the tire from the saddle there was
> > virtually NO variance as the tire spun around.
> > 1. *Any suggestions on how to avoid the high or low spot when changing a
> > tube?
> > 2. *Any idea what happened to the tire over night to make it 'round
> > out?'
>
> Either just grab it in your hands and pull the tire up to seat properly
> or remove it, spray with spray wax and remount it.
> At least your story had a happy ending.
> Do always spin a clincher to ensure the molded lip just above the brake
> track is even and visible all around before inflating to full pressure.
> --
> Andrew Muziwww.yellowjersey.org
> Open every day since 1 April, 1971

a thorough all surfaces cleaning before reassembly helps (and before
disassembly) then pull and push nipple in and out to seat and pinch
pinch pinch sidewalls inward thoroughly all around before and then
maybe during the first pounds going in.
once in a while when placing a new tube in, I'll soap, soak and brush
sidewalls clean. I cover the sidewalls with FL teflon wax on the bead
then overspray the area with belt conditioner as brake prep so the
dirt is on that surface, floats away when soaping. after it gets
beaten with a stick.