Yes, you have to remove the cassette.

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TheBikeRacer.com

I know it's been hashed out before...but at 1.2 pounds, that cover is a tank!

But it's still faster than not having a disc at all, even on hilly courses.

Uh yea right, yep, you betcha....that's why all the pros and UCI riders are using them!

Pros and UCI riders that want power data use SRMs for the most part, and so can ride normal discs.

Us poor folk that need to buy our own gear can't always afford the slickest setups.

I'm sorry if our low-budget rigs insult your sense of cool.

"Uh yea right, yep, you betcha..."

A disc is a disc is a disc.

Educate yourself. CH Aero disc cover tested against a Zipp disc in a wind tunnel. The results will shock you.

It doesn't weight 1.2 lbs either. Are the covers made of lead?

Here's the test.

http://www.biketechreview.com/projects.htm

I knew this would get you going! ;o)

How much does it weigh?

According to Excel.... 540 grams!!!! ouch.

http://www.excelsports.com/...major=1&minor=24

Also...this would be a perfect example of how wind tunnel data is not accurate. There are no races held in a wind tunnel. They are held outside and should take into consideration MANY other variables than straight ahead wind speed.

But...really, I don't want to argue that. Your perception is your reality.

The orig poster doesn't say what wheel the PT is build. But, if it's a 303 or 404........

Honestly, it doesn't feel that heavy, but maybe it is.

Wind tunnel testing is quite accurate in simulating real world conditions. The discs are tested at different yaw angles, not just strait on.

It's just as fast as any other disc unless you're climbing the Alps.

A disc is a disc is a disc. Although I'll admit that a Zipp is truly a work of art. You can't compete with the quality of construction and lightness with a $60. wheel cover.

But then, I paid only thirty bucks for mine second hand on ebay.

I'll leave it to the rest of you to waste your time arguing if it's faster than a "real" disc. I'm already "sold". Back to my original question...how long to install/remove it? Am I looking at 15-30 minutes, or what?

Thanks!

Sorry,

It's quite fast to install/remove if you have a cassette removal tool. 10 minutes or so.

I have to admit I made a stupid mistake when I got mine. I made a hole big enough for the powertap hub shell, then I realized - I cut it on the wrong side. This worked out for the best as now I can install the thing and I don't have to remove the cassette. :)


Installation takes the longest. The reason for this is that you have to carefully align it so that it will not interfere with your brake pads. Sometimes you get lucky and get it right the first time. Removal is very quick - about five-ten minutes. Installation is not something I would leave to day of race - you don't want to be installing this and drop a nut or screw in the grass somewhere. Do it at least one day before and put a training wheel on the bike for transport.

If you contact CH-Aero directly they can sell you a carbon fiber version that weighs I think 200 grams less. Cutting this is a bit more trouble (carbon fiber dust is like coal dust to the lungs).

You got contact info for CH Aero? I wouldn't mind checking out that carbon version.

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The true Master does not wish to lead,
Nor does he wish to follow.
He only wishes to place himself
Where he is needed most.

http://lists.topica.com/lists/wattage/read/message.html?mid=909874398

This is why I ordered mine from Rich at wheelbuilder.com. He knows what rim I have, and the cover will arrive at my door with the hub hole already cut, and the outer edge trimmed to fit my particular rim. A few more bucks and no worries.

I just don't want to muck it up with my limited fabrication skills.