How Much Glue?

I'm in the process of mounting my first set of tubulars. For the most
part everything I've read indicates that I should be able to do a
wheelset with a single tube of glue.

So far I've used a full tube on one wheel. I've applied a base coat
using a acid brush to a new tire and rim that was stripped of all the
old glue, a second coat to both and the mounting coat.

Did I use too much glue?

--
Thx,
-rod
rod[at]rodquiros[dot]com

Rod wrote:
I'm in the process of mounting my first set of tubulars. For the most
part everything I've read indicates that I should be able to do a
wheelset with a single tube of glue.

Nah, you should hose that sucker down with glue, the more the better.
Pour it on-- better yet, dip the whole wheel and tire in it. Try
roofing asphalt if you can't get your hands on enough rim cement.

Then, while the glue is good and tacky, wrap up that 1970s-era bull****
in a moth-eaten 1970s-era hippie poncho, and relinquish them both to
the care of your local sanitation department. You'll be glad you did.


Chalo Colina

:
: Nah, you should hose that sucker down with glue, the more the better.
: Pour it on-- better yet, dip the whole wheel and tire in it. Try
: roofing asphalt if you can't get your hands on enough rim cement.
:
: Then, while the glue is good and tacky, wrap up that 1970s-era bull****
: in a moth-eaten 1970s-era hippie poncho, and relinquish them both to
: the care of your local sanitation department. You'll be glad you did.
:
:
: Chalo Colina

I thought I was going to learn about mounting a tubular and I learned
something else entirely.
Next time, tell us how you really feel about it. Don't be timid. LOL

Pat in TX
:

On Wed, 28 Sep 2005 21:19:31 -0400 Rod
wrote:

I'm in the process of mounting my first set of tubulars. For the most
part everything I've read indicates that I should be able to do a
wheelset with a single tube of glue.

In my opinion, yes, way too much.

It's been a LONG time since I've done this, but I would expect a tube
to do at least 4 wheels.

-
-----------------------------------------------
Jim Adney
Madison, WI 53711 USA
-----------------------------------------------

Sounds too me like you used too much. I usually sqeeze a steady bead
around the whole wheel and spread it out to about 1-2mm with my finger
wrapped in a shred of plastic bag. After letting it sit for a few
minutes, whip that tire on, and pump it up enough to settle it into the
glue, but not enough to have it twist itself off. After some practice,
you should be able to do it without even making a mess! I never
bothered putting glue on the tire too. I've never rolled a tire either.
One tube of glue usually was good for 2 wheels for me, but I have long
ago switched to auto-trim adhesive. It is less heat sensitive. In other
words it doesn't soften up and come un-glued when cowards like me
actually use the brakes descending mountains.

Joseph

Chalo wrote:
...wrap up that 1970s-era bull****

Hey Chalo, I think you missed it by about a century.

For me, a tube of Clement was the standard for one wheel (tire & rim).
Am now using a can of Conti so am adjusting my portions. Just going for
a thin layer from edge to edge. Seems to stick pretty well.

Greg Hall

Rod wrote:
I'm in the process of mounting my first set of tubulars. For the most
part everything I've read indicates that I should be able to do a
wheelset with a single tube of glue.

So far I've used a full tube on one wheel. I've applied a base coat
using a acid brush to a new tire and rim that was stripped of all the
old glue, a second coat to both and the mounting coat.

Did I use too much glue?

--
Thx,
-rod
rod[at]rodquiros[dot]com

It takes a fair amount of glue to build up a good base layer on the
rim. Probably you went a little overboard, but not by much. Just make
sure that you've got a good bond along the edges of the rim, all the
way around, no dry spots.

When you have a base coat on the rim already, one tube is good for
many, many tires. In the future, when you put another tire on there,
you just need to put a very light coat on the tire.

Good guide to tub gluing:
http://www.yellowjersey.org/frontwheel.html

wrote:
Sounds too me like you used too much. I usually sqeeze a steady bead
around the whole wheel and spread it out to about 1-2mm with my finger
wrapped in a shred of plastic bag. After letting it sit for a few
minutes, whip that tire on, and pump it up enough to settle it into the
glue, but not enough to have it twist itself off. After some practice,
you should be able to do it without even making a mess! I never
bothered putting glue on the tire too. I've never rolled a tire either.
One tube of glue usually was good for 2 wheels for me, but I have long
ago switched to auto-trim adhesive. It is less heat sensitive. In other
words it doesn't soften up and come un-glued when cowards like me
actually use the brakes descending mountains.

There's some research out there which you should be able to turn up by
searching the archives for this ng that indicates that there are better
choices than auto trim adhesive. The least heat sensitive glue is
Vittoria Mastik One, defined as having the strongest bond on a hot rim;
it also has the strongest absolute bond and can be ridden as soon as
about an hour after mounting- its bond strength after an hour or so is
better than most after 24 hours.

I get four wheels out of a tube, more or less. For a new wheel and tire
one coat each dried, and then a semi-wet coat on the wheel. For a used
wheel and tire, one semi-wet coat on the wheel. I may or may not clean
old glue depending on how thick it is. The only problem with applying
Vittoria Mastik like this is that the tire can be hard to get off on
the road. It helps to have some kind of tool that you can wedge under
the tire to pry it up to get a start on pulling the tire off.

Dave wrote:
Rod wrote:
I'm in the process of mounting my first set of tubulars. For the most
part everything I've read indicates that I should be able to do a
wheelset with a single tube of glue.

So far I've used a full tube on one wheel. I've applied a base coat
using a acid brush to a new tire and rim that was stripped of all the
old glue, a second coat to both and the mounting coat.

Did I use too much glue?

--
Thx,
-rod
rod[at]rodquiros[dot]com

It takes a fair amount of glue to build up a good base layer on the
rim. Probably you went a little overboard, but not by much. Just make
sure that you've got a good bond along the edges of the rim, all the
way around, no dry spots.

When you have a base coat on the rim already, one tube is good for
many, many tires. In the future, when you put another tire on there,
you just need to put a very light coat on the tire.

Good guide to tub gluing:
http://www.yellowjersey.org/frontwheel.html


I agree with Dave. For preparing a new set of rims I put on two coats
and let both coats dry. And for new tires a coat on the base tape and
let it dry too. Then a light coat on both rim and tire when mounting.
One tube of glue to get a new rim and new tire mounted seems reasonable
to me. When replacing the tire in the future with a new tire, you
should get several tires from a tube. You still have to put a base
layer on the new tire and let it dry.

Dave wrote:

It takes a fair amount of glue to build up a good base layer on the
rim. Probably you went a little overboard, but not by much. Just make
sure that you've got a good bond along the edges of the rim, all the
way around, no dry spots.

You don't need that much. An extremely strong bond can be created with
the right kind of glue with one dry coat on rim and tire and one
semi-wet on rim only.

I hesitate to bring this up because it usually leads to an protracted
discussion here, but if in fact glue squirm does contribute to
increased rolling resistance, it seems logical to me that thicker glue
equals more squirm.

I think that the wet layer is an important factor in getting a strong
bond, probably because it compensates for irregularities in the
thickness of the glue layer and the rim and tire surfaces. Also
important, there's no reason not to use the best glues available:
Vittoria Mastik or Continental, in that order. And, as you said, make
sure that the glue is functional all the way to the edge of the rim. It
doesn't do any good to have glue on the edge if it isn't bonding.

As I said elsewhere, you can tell if the bond is right because the tire
should be very hard to pull off the rim even if deflated.