sanding the inner tube

[quote="''"]when doing flat repair,

what is the exact reason[s] for sanding the tube prior to applying the
glue?

a. knock off dirt and dust, possibly talcum powder

b. reveal a fresh, lower layer of rubber that will stick better

c. completely remove all ridges, bumps, projections so the air won;t
leak around
[/quote]
remove the mold release from the tube.

[quote="someone"]When doing flat repair, what is the exact reason[s] for sanding the
tube prior to applying the glue?[/quote]

Quoted message said:

a. knock off dirt and dust, possibly talcum powder

Quoted message said:

b. reveal a fresh, lower layer of rubber that will stick better

Quoted message said:

c. completely remove all ridges, bumps, projections so the air won;t
leak around

[quote="landotter"]On Jun 25, 1:40 pm, "[email hidden]" <[email hidden]> wrote:> when doing flat repair,

[quote="Quoted message"]what is the exact reason[s] for sanding the tube prior to applying the
glue?[/quote]

Quoted message said:

a. knock off dirt and dust, possibly talcum powder

Quoted message said:

b. reveal a fresh, lower layer of rubber that will stick better

Quoted message said:

c. completely remove all ridges, bumps, projections so the air won;t
leak around

Frank Krygowski said:

Would a solvent do the job more quickly? Has anyone tried carrying a
few ml of acetone in a tiny bottle, and using that?

That's what I used (at home, not on the road). It works very well.

[quote="Quoted message"][quote="Quoted message"] "[email hidden]" <[email hidden]> wrote:> when doing flat repair,
[quote="Quoted message"]what is the exact reason[s] for sanding the tube prior to applying the
glue?
a. knock off dirt and dust, possibly talcum powder
b. reveal a fresh, lower layer of rubber that will stick better
c. completely remove all ridges, bumps, projections so the air won;t
leak around[/quote][/quote][/quote]

Quoted message said:

landotter said:

remove the mold release from the tube.

Frank Krygowski said:

Would a solvent do the job more quickly? Has anyone tried carrying a
few ml of acetone in a tiny bottle, and using that?

A Muzi said:

Frank Krygowski said:

Would a solvent do the job more quickly? Has anyone tried carrying a
few ml of acetone in a tiny bottle, and using that?

We did for years, when we patched[1]. The auto industry once used
trichlorethylene, [...]

I remember hearing that Trichlor is nasty stuff, so I looked up an MSDS
and see that "Workers chronically exposed may exhibit [...] increased
cardiac output." Time for a new doping thread on RBR!

Reference: http://www.jtbaker.com/msds/englishhtml/t4940.htm

Mark J.

On Thu, 26 Jun 2008 12:37:38 -0500, A Muzi <[email hidden]>

Quoted message said:

[1] Tubes have not changed price in 20+ years but US labor costs have.
[2] Tape deck cleaner, isopropyl alcohol, annhydrous ether, MEK -
whaddya got handy? Trichlor won't readily ignite, which was nice.
--

I was riding on a drizzling day and got a flat w/o a spare but with a
patch kit. Wet sandpaper doesn't do it. Patching was really
problematical. A rider came by and showed me a trick. Put glue on
and wipe it off. Then put glue on. The glue has solvent in it and
that would clean the mold release off the tube.

Paul Kopit said:

On Thu, 26 Jun 2008 12:37:38 -0500, A Muzi <[email hidden]>

Quoted message said:

[1] Tubes have not changed price in 20+ years but US labor costs have.
[2] Tape deck cleaner, isopropyl alcohol, annhydrous ether, MEK -
whaddya got handy? Trichlor won't readily ignite, which was nice.
--

I was riding on a drizzling day and got a flat w/o a spare but with a
patch kit. Wet sandpaper doesn't do it. Patching was really
problematical. A rider came by and showed me a trick. Put glue on
and wipe it off. Then put glue on. The glue has solvent in it and
that would clean the mold release off the tube.

potd.

On Fri, 27 Jun 2008 15:59:25 -0700, Paul Kopit <[email hidden]>

Quoted message said:

I was riding on a drizzling day and got a flat w/o a spare but with a
patch kit. Wet sandpaper doesn't do it. Patching was really
problematical. A rider came by and showed me a trick. Put glue on
and wipe it off. Then put glue on. The glue has solvent in it and
that would clean the mold release off the tube.

Whoa. Thanks for that info -- could prove very useful.

Paul Kopit said:

Quoted message said:

[1] Tubes have not changed price in 20+ years but US labor costs
have. [2] Tape deck cleaner, isopropyl alcohol, anhydrous ether,
MEK - whaddya got handy? Trichlor won't readily ignite, which was
nice.

Quoted message said:

I was riding on a drizzling day and got a flat w/o a spare but with
a patch kit. Wet sandpaper doesn't do it. Patching was really
problematical. A rider came by and showed me a trick. Put glue on
and wipe it off. Then put glue on. The glue has solvent in it and
that would clean the mold release off the tube.

Two points:

Wet sanding with a cloth backed belt sander strip works fine and the
belt sander doesn't disintegrate when wet.

Water and rubber solution make a rough and lumpy smear if the tube
isn't already wiped nearly dry with a cloth or paper.

I find patching in the rain uncomfortable but with a bit of shelter
goes alright. Use your back up tube and patch the punctured one later
where you can do a good job.

Jobst Brandt

Quoted message said:

Paul Kopit said:

Quoted message said:

[1] Tubes have not changed price in 20+ years but US labor costs
have. [2] Tape deck cleaner, isopropyl alcohol, anhydrous ether,
MEK - whaddya got handy? Trichlor won't readily ignite, which was
nice.

Quoted message said:

I was riding on a drizzling day and got a flat w/o a spare but with
a patch kit. Wet sandpaper doesn't do it. Patching was really
problematical. A rider came by and showed me a trick. Put glue on
and wipe it off. Then put glue on. The glue has solvent in it and
that would clean the mold release off the tube.

Two points:

Wet sanding with a cloth backed belt sander strip works fine and the
belt sander doesn't disintegrate when wet.

which has /nothing/ to do with solvents.

Quoted message said:

Water and rubber solution make a rough and lumpy smear if the tube
isn't already wiped nearly dry with a cloth or paper.

that's the least of your problems. did you bother to read the bit about
application and subsequent removal?

Quoted message said:

I find patching in the rain uncomfortable but with a bit of shelter
goes alright.

brilliant holmes! i don't know how you work this stuff out!

Quoted message said:

Use your back up tube and patch the punctured one later
where you can do a good job.

er...

Andrew Muzi said:

- Hide quoted text -

Frank Krygowski said:

Would a solvent do the job more quickly? Has anyone tried carrying a
few ml of acetone in a tiny bottle, and using that?

We did for years, when we patched[1]. - Hide quoted text -

[1] Tubes have not changed price in 20+ years but US labor costs have.

Inflation adjusted? [1]?

Not to mention there is less of a liability issue with using new tubes.

[1] Pun intended.

--
Tom Sherman - Holstein-Friesland Bovinia
The weather is here, wish you were beautiful

Tom Sherman wrote:
<snip for clarity>

Quoted message said:

[1] Pun intended.

so why wasn't it funny?

lightweight.

jim beam said:

Tom Sherman wrote:
<snip for clarity>

Quoted message said:

[1] Pun intended.

so why wasn't it funny?

lightweight.

Oh gee, I seem to have a stalker. No wonder "jim beam" refuses to use
his real name.

--
Tom Sherman - Holstein-Friesland Bovinia
The weather is here, wish you were beautiful

Tom Sherman said:

jim beam said:

Tom Sherman wrote:
<snip for clarity>

Quoted message said:

[1] Pun intended.

so why wasn't it funny?

lightweight.

Oh gee, I seem to have a stalker. No wonder "jim beam" refuses to use
his real name.

idiot.