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The 3D prototype of Ibis' Mojo Carbon

Though this resulted in extra material being used for the sake of looks, Ibis claims that a 58cm Silk Carbon frame comes in at 950 grams.

All carbon-fiber frames Metal and Hybrid Bicycles

Titus' titanium/carbon tubes.

both lighter and stiffer in critical directions than plain titanium.

Bicycle Electronics: It's About Power Output


Wireless computer
click on image for full view

However, the PowerTap solution requires a rider to use a wheel built around the PowerTap hub. Many bike riders and racers use separate sets of wheels for training and racing; equipping multiple wheels with PowerTap hubs (which start at $699.99 for the base model) is an expensive proposition.

The Ergomo Bicycle Computer

Though the Ergomo power measurement device, from the German company of the same name, costs over a
thousand dollars, it doesn't require any extra expense if you want to switch wheels. This is because the Ergomo
monitors power output by measuring torsion in the bottom bracket—the central spindle around which the cranks
turn. As a rider pedals, the bottom bracket axle twists almost imperceptibly; the Ergomo measures this through
an optical system and reports the data to its own handlebar-mounted computer. This, said the manufacturer,
keeps the weight penalty of using a power meter down to only 80g and allows the use of any wheels and crankset.

The Ergomo Computer
click on image for full view

As with the PowerTap, the Ergomo can download its stored data to a PC, which can then be used for training analysis.
In addition, the ergoRacer software can upload your data to a Web page, allowing remote access to your data by your coach.

The SRM Training System

Though the company wasn't exhibiting at Interbike, the German company SRM's power measuring product was visible on bikes from manufacturers such as Cannondale, which will be selling stock road bikes in 2006 with the SRM Training System built in.

One of the first power meters used by pros, the SRM replaces the entire crankset with its own, which includes a power measuring unit that uses strain gauge strips to detect deflection during pedaling. As with the other systems, the data gathered is not only shown on the handlebar-mounted computer during rides but can be downloaded to a PC.
A Cannondale equipped with SRM's power-measuring crankset.
click on image for full view

However, what to do when you need the data now, and the rider is still out on the road? That's where the true tech geeks came in.

In the most recent Tour de France, SRM equipped a number of riders not only with the power-measuring cranks but also with GPRS modems developed by T-Mobile and SRM. This allowed monitoring of the riders' power output, heart rate, cadence, speed and time on the bike for up to 1000 meters. These data were not only used by team managers and coaches, but were also included in live coverage broadcasts on German television.

Stationary Bicycles

And for those who don't want to venture out in to the world just for a bike ride, there were alternatives.

CycleOps showed off a stationary trainer that allowed users to race on a virtual track against phantom competitors. Users could save their top races and compare notes with other owners of the same product.
A CycleOps stationary trainer
click on image for full view

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