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Re: Will Tubulars Arise Again? [IT] [ In reply to ]
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I've been looking at every Crr test I can find for about 15 years, and tubulars have always come out inferior to clinchers, except for some tests done ~10 years ago by Al Morrison, where some comparable tubulars were very slightly better. The trick was to use Mastik glue and very thoroughly glue them (3 coats of Mastik 1 glue on the rim and 2 coats on the tire, ~ 2 tubes of glue per wheel). IMO it only brought tubulars up to the level of clinchers, and in the all the other tests tubulars were worse, probably because of the glue used and less thorough gluing. All of these tests were on rollers of some kind, BTW.

For tubulars to have lower rolling resistance on the road there would need to be some esoteric ability to better damp roughness and vibration, and AFAIK no one has ever shown/tested this.
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Re: Will Tubulars Arise Again? [IT] [ In reply to ]
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IT wrote:
Now does it take into consideration the most efficient tube/clincher vs the most efficient tubular?

It doesn't take into consideration anything in particular. The reason that tubulars are faster on bikecalculator is that the website makes the traditional assumption that the tubular being used is better or more performance-oriented than the clincher being used.
Last edited by: HTupolev: Mar 13, 19 10:58
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Re: Will Tubulars Arise Again? [nealhe] [ In reply to ]
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nealhe wrote:
Hello All,


Zipp 808 Firecrest clincher Front + Rear = 1885 grams

Zipp 808 Firecrest tubular Front + Rear = 1700 grams




Why “Carogna”?
In several areas in Italy, “Carogna” (meaning: carrion, corpse in putrefaction) was the old name for tubular mastic, as mastic smells bad and is gooey. Carogna: a historical, funny name for a modern product that serves the same purpose of smelly old mastic. in a clean, fast and odorless way!!


EXCLUSIVE FEATURES:
  • extremely easy to use compared to mastic
  • very reliable adhesion, in any condition
  • once removed, Carogna leaves the rim ready for the next gluing, without additional cleaning
  • works for road and cyclocross
  • also available in very convenient Shop rolls
CHARACTERISTICS:Why we created it:
We started developing Carogna (pronounced “car-own-ya”) double sided adhesive tubular tape with a clear and ambitious goal: to bridge the gap between previously existing tapes and mastic in terms of gluing performance and heat-resistance, while retaining all the advantages of tapes.

In addition to this, we gave specific additional consideration to cyclocross (read the specific how-to guide here!) and mountain-bike tubulars, where specific features are needed from the gluing standpoint.


Universal performance:
Carogna has been tested and is designed to perform flawlessly on any rim material (aluminum, carbon), with any tubular (seamless, handmade, vulcanized sew-ups…), on and off-road.


Specific adhesive properties on rim and tubular:
the tape has two application-specific sides:


  • Semi-structural and removable on the rim-side: adhesion is guaranteed by industrial-grade acrylic glue, native to the base tape; this means that when removing the tubular (breaking its bond with the rim), the acrylic glue will stay on the tape, not on the rim. Acrylic has a good adhesion on both aluminum and carbon without any specific surface preparation.
  • Permanent on the tubular side: there’s a 1 mm-thick layer of a recently-developed permanent glue for underwater applications. This thick glue film will move and spread when the tubular is first inflated, ensuring optimized contact with any tubular base tape geometry. Humidity is obviously not an issue, and this glue adheres well to any kind of base tape material (nylon, cotton, poly-cotton) or external finishing (raw, brushed, or coated by neoprene).
Wide temperature range in use:
once adhesion is set, the use at low temperatures (down to -40°C) is not a problem. Thermal resistance of all materials used in the manufacture of Carogna was a high priority: Carogna will provide a perfect bonding at 150°C for extended periods (hours), exceeding the heat-resistance of even the best mastics and widely exceeding the heat-resistance of any other tubular tape.


Optimized adhesive surface:
adhesion is very strong and uniform across the whole circumference of the rim for all tubulars and it is also uniform across the tubular base tape. One short-coming of tubular tape to-date has been limited adhesion at the edges of the base tape or in the center of tubulars with a raised center seam. Carogna solves these problems.

Will tubulars arise again?

No.

He who understands the WHY, will understand the HOW.
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