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Stretching tubular tires(5 posts)

Stretching tubular tiresbikekr
Apr 21, 2003 9:50 PM
Can anyone clue me in as to how to stretch tubular tires so that you dont have to wrestle with them to mount them?

Keith
re: Stretching tubular tiresAkirasho
Apr 21, 2003 10:07 PM
http://www.jimlangley.net/wrench/tubular.html
http://www.zipp.com/TechInfo/wheel_cycling_101/
http://draco.acs.uci.edu/rbfaq/FAQ/8b.21.html (the method I use)

... I generally work around the circumference of a fresh casing... one end under foot... the other tugged by hand (tread side down... careful not to rip the base tape)... then drymount to a wheel for at least a day.

Under most circumstances... there's gonna be some wrestling... indeed, that's part of what keeps 'em in place! Like clinchers... it's a combination of the tire and the rim that'll determine how many rounds are necessary.

Good luck!

Be the bike.
re: Stretching tubular tiresrussw19
Apr 22, 2003 7:42 AM
I had an old front wheel in my basement for this back when I rode tubulars. I would dry mount the tire on this wheel then pump it up to like 180 pounds and refill it to that pressure everyday for a week or so. That would stretch it some before I started the glue process.

It helps some, but they are always going to be a pain in the arse to mount until you do about 100 of them and get a technique of your own down.

Russ
Lean into itKerry
Apr 22, 2003 4:50 PM
To mount a tubular on a rim, put the valve stem in and grab the tire with your hands spaced equally on each side of the valve. With the wheel/rim braced on the ground, lean your full body weight on the tire, thereby stretching it away from the valve. Work the tire on the rim and as you do, inch your hands farther and farther along. Keep the full body lean going. When you have the tire nearly on the rim, flip it over and you'll be able to pull the last 1/3 of the tire on with little difficulty. That will mount new and stretched tubulars, with or w/o glue. For stretching, mount and inflate to 6-7 bar.
re: Stretching tubular tiresJimP
Apr 23, 2003 10:30 AM
Before I dry mount my tire, I stretch it between my feet and hands. I then mount and store the new tires on "stretcher rims" (old tubular rims without spokes or glue). I also pump the tire up to about 170-180 lbs to check for leaks and then only glue the tire just prior to mounting on the bike.
Jim