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Readers chime in on Hamilton, O’Grady and Horner
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There’s a real guy in that jersey
Dear VeloNews,
The biggest crowds all day were for trying the bike with Shimano’s Dura-Ace 7900 electronic shifters.
The biggest crowds all day were not for autograph signings but for trying the bike with Shimano’s Dura-Ace 7900 electronic shifters on it. Hold down a shift lever to get a green LED indicator of battery level. Push a button for three seconds next to the LEDs, and they light up red, indicating that you are in adjustment mode. At 12 steps per shift, the adjustment you then perform with the shift buttons to line it up (by ear, while riding) under each cog is a finer adjustment step than turning the notched barrel adjusters on a Shimano cable system. And if you crash on the derailleur, it moves resistance-free out of the way. Then you push the adjustment button repeatedly once you are back up and riding to dial it in.
With a Vibram sole, Kanji letters, and no hint of a Shimano logo unless you look carefully.
With a Vibram sole, Kanji letters, and no hint of a Shimano logo unless you look carefully for the imprint in the suede upper, this shoe has already become a hit with the flat-pedal crowd.
Using stereo lithography, Zipp can make a newly-designed wheel within a day out of plastic that it can test in a wind tunnel.
Using stereo lithography, Zipp can make a newly-designed wheel within a day out of plastic that it can test in a wind tunnel. The cost of $10,000 per wheel is steel for an unrideable wheel, but it is far cheaper than making a mold and producing only a single prototype or two out of it.
You can bolt an inner chainring to it from the inside with four bolts, or run it as a single ring.
You can bolt an inner chainring to it from the inside with four bolts, or run it as a single ring. The Vuma crank is available from 165mm to 180mm.
The new Zipp Vuma time trial crank claims to be not only the most aerodynamic crank on the market, but also the stiffest.
The new Zipp Vuma time trial crank claims to be not only the most aerodynamic crank on the market, based on wind tunnel tests, but also the stiffest. The big chainring bolts on with 10 bolts and is essentially a ring of teeth on the exterior of a carbon disc. Tests of flex on the chainring with the chain under heavy load in a cross-chain position reveal far less tooth deflection than with any other crank, according to Zipp.
The Deda Zero Nero stem is all carbon with no metal.
The Deda Zero Nero stem is all carbon with no metal inserted in it – the strongest thing you can build with carbon is a full monocoque. But to attach it to the handlebar and steering tube, you need metal parts. A full aluminum handlebar clamp that wraps around the carbon holds the bar firmly, and two pinch bolt clamps secure the top and the bottom of the stem to the steerer.