so im not a racer, but im a gear freak looking to expand my stable.
im attempting to do some triathlons and hoping for the ironman in 2006, so the right choice of gear can mean the difference between finishing and not finishing.
i understand that wheel aerodynamics/weight affect the ride, the speed, and the amount of power required at a given speed. given all that, if you can afford the wheels to maybe save yourself some energy and power as opposed to finishing X number of seconds faster than your competitor, then so be it.
here's what ive gathered about zipp 404's and mavic cosmic carbone's:
zipp 404 clinchers: alloy hoop bonded to a carbon body. 58mm rim, 18 spoke front, 24 spoke rear. claimed weight for the regular 404 set is 1712g, and the clydesdale set at 1775g (with 24 front/28 rear). straight pull sapim cx-ray spokes (strongest/lightest spokes) that are mounted on the actual carbon portion of the rim. 2005 version of the wheels are supposedly supposed to have the same dimples on the carbon surface that the 808's had.
mavic cosmic carbone sl: allow hoop with a "carbone" fairing (basically a carbon like or carbon based fairing). 50mm rim (rim + fairing), 16 spoke front, 20 spoke rear. 2005 claimed weight is 1765g. straight pull mavic flat spokes. spokes are actually mounted on the alloy portion of the hoop, not on the fairing.
given all that, hows about a comparison between the strongest zipp wheel (the clydesdale version) vs the mavic cosmic carbone? here's what i can gather from a small amount of research and hopefully a bit of sense:
the zipp's have a larger cross section, so faster at given speeds. if 2005 sets really have the dimples, perhaps theyll be even faster. more spokes on the clydesdale version == slightly more wind turbulance correct? i know that the carbon process is getting stronger every year, but spokes mounted in carbon vs aluminum still dont exactly give me complete confidence. i could be wrong. ive heard the zipps spin up quickly, but heard from a wheel builder that the bearings are sorta "thin" in the front.
the mavic's have a smaller cross section, so possibly slower/less aero at speed in that respect. less spokes == less wind resistance, but at the same time, possibly less strength than more spokes (i say possibly since it also depends on the rim strength and lacing pattern, etc etc). spokes are mounted in the alloy portion of the rim, with eyelets, so possibly stronger there..
so here's the question.. which is better? haha i know that seems like an endless conundrum, but we all want speed, expend less energy, but hell it doesnt hurt to have strength as well. pro or not, no one wants a wheel to fold under them regardless of what kind of race/ride theyre doing, cat 5 or cat 1.
as for my opinion, im leaning towards the 404's in every respect aside from the spokes mounted in carbon.
the other half of me is leaning towards the mavic's because of the spokes mounted in the alloy portion of the rim.
in terms of speed differences between 58mm and 50mm, im not sure. dimples would be nice though.
any thoughts?