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. 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. 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, 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 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.
After many years with the same booth, Campagnolo has a new booth to celebrate the introduction of 11-speed cogsets to the world.
... but Isaac managed to snag it first.
It seems amazing that nobody has thought of using “Aerotic” as a model name for a time trial or triathlon bike before ...
Trek’s EX, Top Fuel full-suspension and 9 Series hardtail mountain bikes get the super-wide, net-molded bottom bracket shell like the Madone; the bearings press in (by hand) into net-molded (not machined after molding) bearing sockets.
Mavic is back in the pedal business now. Having been on the cusp of the date when Look’s patent ran out, the company changed the Look cleat design slightly to avoid a conflict. Nonetheless, the system works essentially the same as a Look or a Shimano SPD-SL, and the cleat looks similar.
On a standard threaded bottom bracket, the lateral position of Ultra-Torque cranks is held in place by means of a snapring on the drive side that locks the drive-side bearing inboard of holes in the threaded external bearing cup. But what about a current Trek Madone or a BB30 frame? Campagnolo, and, in this case, its fully-owned subsidiary, Fulcrum, have come up with new “OS-Fit” adaptors for frames like this and a tool for installing them.
The Campagnolo Ultra-Torque crank system has a problem with press-in bottom bracket bearing systems, because the bearings are attached to the crank spindle and are not pressed into threaded cups or into the frame.
Neal Henderson is the Sport Science Manager at Boulder Center for Sports Medicine. He is a USA Cycling certified coach and works with a diverse clientele at BCSM. He has been Taylor Phinney’s personal coach since 2006 and traveled with Phinney and his family in the lead-up to the Beijing Olympics. This is his wrap-up column following the Olympics. The 2008 Olympic Games have officially ended and Taylor Phinney had the best finish for an American men’s individual pursuit rider since Steve Hegg won gold in 1984.
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