My "A" ride is the Triple Bypass. http://www.teamevergreen.org/triple
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120 miles. ~11,000 feet of climbing.
Every year that I have done it, it is a dilemma of what wheels to choose. I have to balance: light weight for the climbs, likelihood of flats, braking during torrential thunderstorm/hailing descents, long sections where aero wheels are nice, and what to carry for spares.
Every year, even with a quiver of super high end tubular wheels, I go with clinchers because I do not want to carry multiple tubular tires and slime. Besides the Fulcrum Racing Light clinchers (which actually are not that light and have NO aero properties) I am still looking for the perfect grand fondo clincher wheelset.
Alas, my search is over.
In testing the Mavic 40C's, I did 8500 feet of climbing, mostly up and down Lookout Mountain in Golden on these wheels. It was wet at times from snow melt with some gravel roads thrown in for good measure. The first smiles on these wheels came on the twisty descents.
Here are my impressions:
Mavic Cosmic Carbone 40C Good
: Very solid in power transfer and stable cornering predictability, quiet
riding, excellent descending characteristics and braking performance, very little effect with heavy gusting cross winds, great ride quality and sound, sexy as hell with matching Mavic tires and carbon hubs, great customer service and support, never have to swap pads for training/race wheels as these do it all. Bad
: Not the lightest wheels out there but acceptable all day climbing wheels. $ is actually not a downside as I am guessing the resale of these wheels will remain high, as with most Mavic products.Verdit
: My first choice for "do it all -climbing gran fondo wheels" that can be relied upon in any situation and weather for years.