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Old 05-27-09, 10:29 AM   #1
procrit
carbon is too light
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RR / TT wheelset thoughts?

http://www.planet-x-usa.com/pPC82/10...-Wheelset.aspx

How much slower could a 101mm rear wheel be vs a disc wheel or a wheel with a disc cover?

Plus for $850, it seems like a great deal...

Thoughts?
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Old 05-27-09, 11:15 AM   #2
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Good price. No info on their hubs though.
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Old 05-27-09, 01:55 PM   #3
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Worthy of winning the tx state cat 3 time trial?
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Old 05-27-09, 10:34 PM   #4
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Quote:
Originally Posted by procrit View Post
http://www.planet-x-usa.com/pPC82/10...-Wheelset.aspx

How much slower could a 101mm rear wheel be vs a disc wheel or a wheel with a disc cover?

Plus for $850, it seems like a great deal...

Thoughts?
Holy Deep Dish Pizza Batman!
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Old 05-28-09, 01:37 PM   #5
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I'd love to see some data on wheel covers vs Disc. I have a zipp 404 PT that I will be using with a wheel cover from wheelbuilder.com at the State TT. I'll be leaving my Zipp disc at home in favor of power info. It makes me sad to not ride my disc.... As for front a front wheel, a pretty knowledgeable person told me that you need at least 80 mm on the front for a 40 K. So, I'm building a 100mm front wheel for the state TT right now. I found a Planet-X 100 mm rim (blackwell labeled) for only $150. I'm lacing it up with sapim cx-ray spokes to an American Classic micro 58 hub.
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Old 05-28-09, 01:49 PM   #6
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Didnt somebody do wind tunnel testing on these 100+mm rims and find them to be worse than 404's etc.. Edge never came out with their 100+mm rim after testing it in the tunnel right?
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Old 05-28-09, 02:03 PM   #7
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I'd love to see some data on wheel covers vs Disc. I have a zipp 404 PT that I will be using with a wheel cover from wheelbuilder.com at the State TT. I'll be leaving my Zipp disc at home in favor of power info. It makes me sad to not ride my disc.... As for front a front wheel, a pretty knowledgeable person told me that you need at least 80 mm on the front for a 40 K. So, I'm building a 100mm front wheel for the state TT right now. I found a Planet-X 100 mm rim (blackwell labeled) for only $150. I'm lacing it up with sapim cx-ray spokes to an American Classic micro 58 hub.
Check out slowtwitch.com. This topic comes up about 1x/week.
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Old 05-28-09, 02:03 PM   #8
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Didnt somebody do wind tunnel testing on these 100+mm rims and find them to be worse than 404's etc.. Edge never came out with their 100+mm rim after testing it in the tunnel right?
You know, I've never seen any data on 100 mm rims, though I know Cobb did test the wheel. I do know that the 808 (82mm rim) has done well in tests. Also, the zipp engineer, who posts on here as Waldo, has stated this on the forum:

"the 808 outperforms the 100 on effective wind angles of 0-25 while the 100 is superior at 25-30. With typical effective wind angles falling between 10 and 20, the 808 is generally the better bet."
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Old 05-28-09, 02:12 PM   #9
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Didnt somebody do wind tunnel testing on these 100+mm rims and find them to be worse than 404's etc.. Edge never came out with their 100+mm rim after testing it in the tunnel right?
Cite sources please.

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You know, I've never seen any data on 100 mm rims
I have on some. See below.

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Worthy of winning the tx state cat 3 time trial?
Perhaps. Depends on the wind. The rear will be fine in any case.

I go down to an 85 or as low as a 46 in crosswinds. Otherwise I'll run the Stinger 9.
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Old 05-28-09, 02:43 PM   #10
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Cite sources please.
Don't we get in trouble for posting links to other forums? Troy? from Ligero Wheels posted it on a site dedicated to light parts

Here is the quote I could find in my short amount of searching, there was more on the subject a while back..
Quote:
The 118mm rim that they were working has been tested in the tunnel and it did not do as well as expected. I was told they would be making changes to make it faster and there is no expected availability date because of the work that still needs to be done.
and this:

Quote:
If they want to make a truly aerodynamic 118mm deep rim, they'll have to pay royalty fees. I don't think their is anyway to get around the fact that a rim that deep will stall out at fairly low angles without curved sidewalls.
(Zip/Hed Patent)



I did stumble across this photo and had a chuckle:
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Old 05-28-09, 03:44 PM   #11
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fabian likes his 808's for RRs.
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Old 05-28-09, 04:34 PM   #12
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Don't we get in trouble for posting links to other forums?
Not if we PM we don't.

The Edge 118's are a different animal from the OP's asking point.
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Old 05-28-09, 04:46 PM   #13
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Not entirely, any non zipp/hed wheel @ 100mm is going to have the same issue.. without the bulge you are going to have flow separation.
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Old 05-28-09, 05:04 PM   #14
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Here is some actual data:




Looks like I was wrong about the 101 losing out to the 404.
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Old 05-28-09, 05:14 PM   #15
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Man those HED 60mm wheels suck. Cross those off the list. The 90's fair a little better
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Old 05-28-09, 06:41 PM   #16
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Looks like I was wrong about the 101 losing out to the 404.
No. No. No.

You're supposed to go to the grave insisting you were right. You'll be banned soon. You've broken the BF code of blindness.
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Old 05-28-09, 07:02 PM   #17
procrit
carbon is too light
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That graph is just awesome. The 101mm doesn't look bad at all... especially since you can get the entire rear wheel for $450 shipped.
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Old 05-29-09, 08:10 AM   #18
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No. No. No.

You're supposed to go to the grave insisting you were right. You'll be banned soon. You've broken the BF code of blindness.


I plan on using the 100mm front unless it's really windy. If it's too windy I'll just use a 404 front. Perhaps the 808 is faster in certain wind conditions, but for the money, these 100mm wheels procrit and I will be using can't be beat.
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Old 05-29-09, 01:16 PM   #19
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What model year HEDs are those? They redesigned for 2009, numbers are much different than prior models.
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