glue from tubulars showing

As long as it's not too excessive, it's probably normal.
It's kinda hard to get tubulars on a rim without smearing a little glue around. Plus, when you pump up the tire, you can get a little glue forced out under pressure.

In a Tri or TT scenario, it's OK to go sparingly on the glue... easier to be neat and tiddy and less rolling resistance.

I used to race crits and I've seen my share of guys rolling tubulars in corners... it's not pretty, so I never go too sparse on the glue. There's usually a little peeping out between the rim and the tire casing.

Actually it's move with less glue. Takes 2 good coats on the tire and wheel, less than that is more resistance.

I don't follow you.
There are two types of glue, track glue and road glue (most common by far). Tests show...track glue is hard/stiff and has far less rolling resistance. Road glue, on the other hand, stays soft and that 'squirm' factor causes more rolling resistance. This is documented by many studies.

I could be wrong, but I have always inferred that more/thicker road glue would just exacerbate the 'squirm' factor and result in even more rolling resistance.

Tests show that if you want the fastest possible ride on tubulars that you need a well glued tire; the practice that has given the best results (and actually saw tubulars test faster than clinchers) was three coats of Mastic 1 on the rim and two on the tire.

Shane

I know people who ride tubulars who have no glue showing when they are finished but most people I know who ride tubulars (and everytime I glue my own) have some glue showing.

Shane

there are a number of studies out there showing the vittoria glue with 2 or 3 coats and one on the tire to be faster than one very thin layer.

yes i have some glue showing when i glue mine as well. the one time i had a wheel to change fro ma friend that had none, you wcould actually roll the tire off the rim with one finger. screw that. i am taking a fully glued one, and a razor blade with it to get it off.


ETA: just saw the mastik comment. must have seen the same thing

Wait a minute...

I think there is a little confusion about two issues here:
Mastic is "track" glue. Studies show that "track" glue is hard and has less rolling resistance... less RR than common road glue and marginally less RR than comparable clinchers.
This has been proven by many studies/tests.

Regardless of the above, it sounds like what both of you (gsmacleod & newbz) are also saying is that road glue vs road glue... a well glued tire has less RR than a lightly glued tire. That's helpful. I've always assumed that light-glue is faster. Never-the-less, I've never gone the light-glue route... I've seen a few cyclists go down in crits because they rolled a tire. It's not pretty. That vision is always in my head everytime I glue a tubular onto a rim.

Thanks!

tufo tape!!!!...............that's the way to go and it maintains it's tackiness such that you can re- use it in the event of a flat during a race.....

craig002

Hey guys, Thanks for the answers. It took me a while to post because I wanted to upload some pictures since its hard to know what a little or a lot is... and I had to learn to upload pictures to an FTP... anyway... I hope it works. They say a picture is worth a thousand words... these are probably worth about 50 because of the poor quality of my cell phone camera. ;-)

Thanks for the help...

Gerry

Sorry that did not work. I will get the password of the FTP page tomorrow.

Gerry

I agree, tape is the way to go!

Geoff

I disagree; every test I have seen indicates that tape is measurably slower than a well glued tubular.  If I was training on tubulars I might consider tape but for a racing situation, based on what I have read, you are giving away time.

Shane

Kind of defeats the purpose of having tubulars in the first place. The data I've seen has premium clinchers very close, if not better than, properly glued tubulars, in terms of rolling resistance. Myself, I continue to search for a reason to switch frrom the cheaper and much more user-friendly clinchers.

I got a good deal on a set of 50mm tubulars so I decided to give them a try.  Three seasons later, I always have my eye open for a set of clinchers to replace them with.

For me, it is not worth the hassle to run tubulars but if you are going to run them, I would definitely suggest gluing them.

Shane

You're looking at the wrong data then.  Al's tests using "properly glued" tubulars has them topping the charts now, even over the best clinchers.

And how does something "defeat the purpose of having tubulars?"

The purpose of having tubulars is to have the fastest tires, the least rolling resistence, the best wind profile and the highest air pressures not too mention simple road feel and snake bite resisence.  So at what point does gluing a tubular on correctly defeat the purpose of having them?

To the OP?  Just clean off the excess glue!

Oh, and the tape blows.  No self-respecting mechanic would use it.  I can almost guarantee no pro ones do.

Improper gluing increases the rolling resistance to make them worse in that aspect than premium clinchers, negating one of the few real benefits.
Higher air pressure, more bounce, less efficiency. No benefit there.
Haven't had a snake bite flat since I was an unknowledgeable rookie underinflating my tires.
Not sure if the "best wind profile" makes them significanlty or even measurably better.

Which brings me to my point: if you feel tubulars give you additional benefits significant enough to warrant the additional cost in terms of money, time and effort, then by all means use them. For me, they're not so I don't.

Is anyone else getting a dialog prompting them to login into "casadeluga.com" when they open this thread??

Thanks, I tried to correct the post, but after 30 minutes it would not let me edit it. I am still trying to figure out how to upload pictures. I was trying to link it to a hidden page on one of my sites. I will ask tech to erase that post and hopefully I can figure out a way to get this working.

Thanks and apologies for the bug...

Gerry

Lets see if this works...

Gerry







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