Once you go Blackwell you'll never go back. I have the Blackwell disc and 100 front.

404 tubular and I do have a disc. I used the 404 for the 2-Oly, 3-HIM and even the IM distance race i did this summer. Never thought twice about anything else, except when I put the disc on.

Kevin S.

www.roarkcycle.com

Here is a good place to start:

http://www.hedcycling.com/technical/faq.php

Now all you have to do is decide if 2k is worth the extra time you will be saving :).

Nice set up. I also have a 404 clincher set that came with my bike. They are fast wheels for sure. I wanted to get a clincher disc and use my front 404, but I could not get a hold of a Renn this summer. The Blackwell set up worked out well price-wise. I did not want to mix clincher/tubulars at the same time.

neither, get a power meter and train smarter.

You can read about the relative advantages of the different wheels on our tech pages of the site:

<http://www.zipp.com/Default.aspx?tabid=103>

On the wind tunnel graphs 0.1lbs of drag is the equivalent of 6 watts, so it really depends on what wheels you are comparing. Also we have a link to Tour Magazine's wind tunnel test which extrapolates time savings of various aero wheels. They predict the time savings of 808's over Ksyriums for 40k as being 68 seconds, wheels using the previous generation 404 rims came in at 62 and 50 seconds faster. These assume a rider outputting 300 watts, the time savings will increase slightly with lower wattage.

http://www.zipp.com/...bid/155/Default.aspx

The fastest wheel for a 70.3 will be the fastest wheel you are comfortable riding, the 808 is considered the fastest non-disc wheel on the market right now, but is a little deep for some people (although it does have 30% less side force than a 3 spoke and about 15% less side force than 100mm rim in a cross-wind) hence the 606 which is a 404 front with 808 rear really seems to be the setup for IM/HIM distance (winning 5 categoreis at Kona), for larger riders the full 808 is generally no problem (I weigh 155 and ride 808's on my road bike daily) and for smaller riders the 404 or 343 (303 front/404 rear) are very good options, but it is my experience is that the 343 is only really beneficial for riders under 120 lbs or who are VERY concerned about bike handling.

Adding a disc rear will also speed things up a bit, but the margins are small, the disc is about 4-6 seconds per 40k faster than the 808, so for some people that is more than worth it.

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Josh, any status on when the zedtech wheels will be shipping. I am looking of a clincher read zedtech disc,

and front zedtech 808 clincher (or what ever the number is). With cermanics and dimples. :o)



Dave

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Dave Campbell | Facebook | @DaveECampbell | h2ofun@h2ofun.net

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I know this has come up before but what is the best tire width to use with the 808's, is it 23 or 22, I can't remember?

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"I really wish you would post more often. You always have some good stuff to say. I copied it below just in case someone missed it." BarryP to Chainpin on 10/21/06

So what would you recommend for a fast female triathlete (about 1h05 for 40k) that is looking to transition to HIM and IM next year. She is thinking of the 909 set-up but is afraid that she might not be able to handle the disk in the wind. She weighs about 120 pounds for 5'8" tall. Her strength is the run.


edit: inher only HIM she split 2h30 for the bike with kyrsirium elite wheels on a fast course.


Derek