Join Date: Mar 2003
Location: Grand Prairie, TX
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've been splicing the wires to get computers to work in the stoker position for longer than I can remember, probably starting with the Avocet 45s before the Avocet Altimeter 50 was released (that's a long time ago). A low wattage soldering iron and thin-wire low-temperature solder and thin speaker wire, all available from Radio Shack, make the job easy. I had two Avocets wired in parallel to one set of sensors on my pre-'98 Cannondale road tandem. With large framesets, single or tandem, I find it is routinely necessary to splice the wires on the computers I use, with the wheels I use, to get them to fit.
The Avocet cadence sensor has a tall base, so all that is necessary to mount it on a tandem is to zip-tie it to the bottom tube, and the magnet goes on the captain's right crank, thereby saving the magnet from contamination by drivetrain lubricant.
I have a stoker who absolutely insists on a computer (that way we can argue about cadence with facts, and she knows I can't reliably be counted on to start the computer when the ride starts), and to mount the Avocet, I (sort of, my stoker stem is virtual), went from the stoker handlebars to the captain seatpost and then down the captain seat tube to the bottom bracket, and then the wires split, going back to mount the cadence sensor as described, with the speedometer wiring spliced to go up the down tube almost all the way to the head tube, and then bridging across to the steerer tube, and then down the left fork blade to mount the speed sensor next to the wheel magnet track.
I've spliced the Flight Deck wiring to get it to fit on the C'dale before there was a wireless kit, but now that there is a wireless kit I'd rather get that.
The Shimano Flight Deck computer system has a number of advantages over other computers. There is a graphic display that shows what chainring and cog you are on, and a forward mount on aerobars keeps your eyes closer to looking down the road, which is much safer than looking down or back.
Virtual cadence is better than actual cadence because it calculates what your cadence would be, based on the gear you are in (you input the chainring and cog sizes during the setup) and road speed. So if you are coasting downhill at 48 mph, you will know exactly how fast you will have to pedal to catch the gear, because a virtual cadence will be displayed even when you are coasting, based on the gear and the road speed.
My ideal stoker computer is a repeater display of the Flight Deck, with all twelve (?) screens accessible by the stoker. I told Bill McCready (Santana CEO) I wanted one, but I guess he hasn't gotten around to that yet.....