General Discussion Triathlon Talk » Wheel selection: aero vs weight Rss Feed  
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2008-08-13 9:07 AM

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Pro
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Libertyville, IL
Subject: Wheel selection: aero vs weight
I know aero generally trumps weight, but wondering if Ksyriums SLs should be the choice over my HED Alps for this weekends Dairyland Dare ride with just under 15k o climb over just under 130 miles.  Does it make sense to go lighter for this kind of elevation gain or will the more aero and better roll be more beneficial?  Looking for opinions please, though I am leaning towards the Ksyriums.


2008-08-13 9:13 AM
in reply to: #1599793

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Cycling Guru
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Fulton, MD
Subject: RE: Wheel selection: aero vs weight

Are your HED's clincher or tubies?

My tubie Zipps are lighter than my Ksyrium SSC SL's ........

Ride the lightest thing you've got usually on hilly courses.  The big "if" is how is the course overall?  Are they constant gradual climbs to get that sort of elevation change?  Are they a few hard steeper hills?  Are there a lot of long flatter sections?  Technical descents?

Almost all the top Tour teams ride deep sections wheels all the time now.  Like Zipp 303's or 404's.

2008-08-13 9:25 AM
in reply to: #1599793

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Pro
3906
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Libertyville, IL
Subject: RE: Wheel selection: aero vs weight

http://www.dairylanddare.com/files/CueSheet2008.pdf

Looking at it, there are a lot of sharper 2-3 hudred foot climbs with only one or two around 500.  Both wheelsets are clinchers.

2008-08-13 9:40 AM
in reply to: #1599793

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Giver
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Subject: RE: Wheel selection: aero vs weight
Your HED Alps are pretty darn light wheels, designed for climbing. They should be great.
2008-08-13 10:00 AM
in reply to: #1599944

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Cycling Guru
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Subject: RE: Wheel selection: aero vs weight

Nice looking ride!

Go light .......

2008-08-13 10:04 AM
in reply to: #1599793

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Regular
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Essex, England
Subject: RE: Wheel selection: aero vs weight

Excuse my ignorance but can someone explain what clinchers are.

I have only ridden with inner tubes as mostly been a mountain biker but this year got a race bike and it has tubes.

I am guessing they are tubeless tires.

Are they better than inner tubes ?

thanks for help



2008-08-13 10:14 AM
in reply to: #1599793

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Norwalk, Connecticut
Subject: RE: Wheel selection: aero vs weight

clinchers are tires with a tube that have a bead around the outside of the tire, when inflated the bead holds the tire to the rim they use tubes like a mountain bike, your rims more than likely are clinchers. Tubless i believe are tires that are glued to a rim designed for that type of tire, i do not believe they use a tube at all but i could be wrong as i have never used them. they are traditionally lighter than clinchers. hope this helps and if i am wrong please correct me.

 

here is a artivle i got from bike magazine:

TUBELESS DEFINED
As the name implies, a tubeless system lacks an inner tube. There are, however, a couple ways to achieve that end. The first is by going with the original tubeless system: UST. The UST standard was developed in a 3-way love fest between Mavic, Michelin and Hutchinson (oh, those crazy French!). At the heart of this system is a rim-bed that features no internal spoke holes through which air can escape. A UST-compatible tire is then mounted onto the rim, inflated to a high pressure (around 60 psi) so that the tire beads lock into the rim and create an air-tight seal and—voila—there you have it. You can now safely lower the air pressure to between 28 and 40 PSI and enjoy the improved traction and control.



Edited by Rudedog55 2008-08-13 10:17 AM
2008-08-13 10:15 AM
in reply to: #1600070

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Cycling Guru
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Fulton, MD
Subject: RE: Wheel selection: aero vs weight

Clinchers are what you are used to.  Inner tube within a hollow tire and on a rim that has a lip and "clinches" the tire when it is inflated.

Tubulars are tires that are sewn together with the inner tube sewn within the tire casing.  These are then glued or taped to a rim that is smooth.

They both have inner tubes, just one is accessible while the other is contained within the tire.

There are "tubeless clinchers" out there that are basically solid rubber synthetics that cannot flat, but they tend to be heavy and you run the risk of "rolling" them off the rim in extreme situations.



Edited by Daremo 2008-08-13 10:18 AM
2008-08-13 10:20 AM
in reply to: #1600070

Subject: ...
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2008-08-13 10:31 AM
in reply to: #1600104

Pro
4528
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Norwalk, Connecticut
Subject: RE: Wheel selection: aero vs weight
CHR15 TREE - 2008-08-13 11:20 AM
Rudedog55 - 2008-08-13 4:14 PM

clinchers are tires with a tube that have a bead around the outside of the tire, when inflated the bead holds the tire to the rim they use tubes like a mountain bike, your rims more than likely are clinchers. Tubless i believe are tires that are glued to a rim designed for that type of tire, i do not believe they use a tube at all but i could be wrong as i have never used them. they are traditionally lighter than clinchers. hope this helps and if i am wrong please correct me.

 

here is a artivle i got from bike magazine:

TUBELESS DEFINED
As the name implies, a tubeless system lacks an inner tube. There are, however, a couple ways to achieve that end. The first is by going with the original tubeless system: UST. The UST standard was developed in a 3-way love fest between Mavic, Michelin and Hutchinson (oh, those crazy French!). At the heart of this system is a rim-bed that features no internal spoke holes through which air can escape. A UST-compatible tire is then mounted onto the rim, inflated to a high pressure (around 60 psi) so that the tire beads lock into the rim and create an air-tight seal and—voila—there you have it. You can now safely lower the air pressure to between 28 and 40 PSI and enjoy the improved traction and control.

 

I am not sure mavic yet offer tubeless rims for road bikes. I think Shimano are the only manufacturer to recommend a tubeless system with [some of] their wheels, Dura Ace?

 

i think you're right, i got the article from a MTB mag website.

2008-08-13 10:37 AM
in reply to: #1599793

Regular
501
500
Essex, England
Subject: RE: Wheel selection: aero vs weight

Ok I think I get it now thank you all very much.

So are they better or just a matter of preference. I can see they would have the advantage that they are harder to pull off the rim under extreme riding. From experience of changing tyres on my MTB they are hard work when you have a flat as the rim is extra strong.



2008-08-13 10:51 AM
in reply to: #1600179

Cycling Guru
15134
50005000500010025
Fulton, MD
Subject: RE: Wheel selection: aero vs weight

Clincher vs. Tubular is right up there with Ford vs. Chevy, Mac vs. PC, McDonalds vs. Burger King .........

There is no perfect tire choice.

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