|Anybody ready for a $30,000 cyclocomputer?||Humma Hah|
Oct 18, 2002 2:42 PM
|We had some fun at work today.
Earlier this week, I built a pendulum test fixture for our company's product, a flight instrument package and computer called "GuideStar". The pendulum was built starting with a Spinergy graphite composite front wheel. Hey, its non-magnetic, and has nice bearings, and it was $50 at a bicycle flea market.
But the amount of motion provided by the pendulum was not enough to test everything they wanted to test. The computer needed some serious motion. We once used a Harley for this, but a steel motorcycle disturbs the 3-axis magnetometer more than we like, and a car would be even worse. So the boss and I rigged a pannier rack on his aluminum Cannondale roadbike, and he took the GuideStar out for an afternoon ride. Works great!
If we ever do build the under-$1k version weighing a couple of ounces, I think I've convinced him we should market a cycling version. The device has an altimeter, airspeed, crosswind sensor, GPS, accelerometers (probably could sense grade directly), plus several serial I/O lines and DIO. Several other sensors could probably be eliminated. It would plug right in to an SRM BB torque sensor, and could use wheel speed and cadence sensors, could probably even be rigged to pick up heart rate monitors.
The one we gave a ride to today, at something like $30k and a couple of pounds, would probably not sell too well.
|When can I order?||DougSloan|
Oct 18, 2002 2:50 PM
|Just make it wristwatch sized and fusion powered, and you'd have about everything. Well, no. You need satellite telephone, internet access, heart rate monitor...
|Make that solar-powered ...||Humma Hah|
Oct 18, 2002 2:58 PM
|... and maybe we can swing it. Technically, that IS fusion power. At my last job, in San Diego, were WERE working on practical fusion power. The approach is promising, but the 2-meter diameter reactor would require a Burley, I think.
The HRM we can probably incorporate. For $31,000, we'll throw in a satellite phone and a roll of duct tape.
|Can you pick up an HRM on another rider?||Chainstay|
Oct 20, 2002 11:56 AM
|Can you target a guy for a while, then change targets to another guy later in the race?|
Oct 18, 2002 2:58 PM
|No cyclecomputer needs more than one serial port. Several? What were you thinking? Loose a few of those and I'll cut you a check. ;-)|
|Actually, you need two ...||Humma Hah|
Oct 18, 2002 3:07 PM
|The computer in question has a lot because of the intended market in aircraft control.
On the bike, you need two serial ports, one for the SRM torque sensor, which is a serial device, and one for whatever device you are using for data display, probably a small PDA on the handlebars.
If the GPS were an external accessory, you would need one for that, too, but GuideStar contains one already (what the heck, the modules are about the size of a postage stamp these days). One of the external ports does provide the GPS information directly, so that would be available for PDA or laptop-based moving map software, should someone be crazy enough to think they need that on a bike.
Oct 18, 2002 8:16 PM
|can you also integrate all the other devices I carry around: HRM, celular phone and MP3 player?|
|Bulk rate for cycling teams?||peloton|
Oct 19, 2002 5:50 AM
|Knock off 15% if we buy more than 5, and tell me where to send the check!|| |