Calfee goes big on electronics with integrated bars, Dragonfly frame and Di2 seatpost

More like a firefly than a dragonfly, Calfee’s Dragonfly with EPS stem has its power source integrated into its body. The bike is the flagship of Calfee's electronics line, into which the company has put considerable time and attention. Offerings include integrated bar/stem systems for Garmin and Campagnolo EPS, as well as the Di2 seatpost that led the way for the custom builder to enter the electronics market. Photo: Lennard Zinn | VeloNews.com

Two Di2 batteries and integrated wiring: Calfee’s stem/bar has a battery in either end of the handlebar. Twist the right carbon end plug clockwise, and the right battery runs the system. Twist it one click counterclockwise to turn the system off, and twist it one more click counterclockwise to switch to powering the system from the left battery. The Garmin mount is not only integrated into the stem/bar, but so is its wiring, so it charges off of the Di2 batteries in the ends of the bar.

This particular model has standard wiring coming out externally from the stem before disappearing into the frame through a grommet and an external Di2 interface, but “super clean” routing through the steerer tube directly into the top tube is also available. Photo: Lennard Zinn | VeloNews.com

Front view of Calfee’s integrated Garmin mount, which charges the unit while on the bike. Pricing is TBD on all of the Calfee stem/bars with integrated electronics. Photo: Lennard Zinn | VeloNews.com

This Calfee carbon bar/stem has a Campagnolo EPS Power Unit (battery and circuit board “brain” of the EPS system) and EPS interface unit built into it. There are ports in the side of the stem for the EPS shutoff magnet and underneath for the charger plug. Photo: Lennard Zinn | VeloNews.com

Indicator lights on both the Campagnolo EPS Power Unit and EPS interface shine right through the carbon. This stem is built onto an ENVE stem, whose center section has been chopped out and replaced by the EPS electronic parts. Calfee builds a new, flared-out stem shaft around them. It saves 20 grams off of a standard EPS Power Unit with an ENVE cockpit. This unit features Calfee’s “super clean” routing of the EPS wires through the steerer tube directly into the top tube. Photo: Lennard Zinn | VeloNews.com

For true adventures far from external power sources, you can have a third Di2 battery integrated into the seatpost, something Calfee has been doing for some time. That’s the charger port on the front. The company offers numerous options for charge ports, auxiliary battery placements and adaptors to power electronic accessories like Garmins and cell phones. Photo: Lennard Zinn | VeloNews.com