Bicycle Wireless Speedometer
how do wireless bicycle speedometers work?
how does the speedometer sense wheel rpms or distance traveled, is there a sensor on the wheel that communicates with the speedometer on the handlebars or what
Both the wireless and wired computers work the same way. There is a magnet placed on the front spoke that trips a reed switch (mounted on the fork) as it passes and tells the computer that the wheel has made one revolution.
The wired version uses wires of course and the wireless transmitter on the fork sends a radio signal to the computer. The wired version is more reliable and only needs the battery for the computer. The wireless version needs a battery for the transmitter on the fork and the computer. The wireless can pick up stray radio signals that make it inaccurate at times. Something like a false alarm on a radar detector.
Here is how a reed switch works, they are very inexpensive to make.
http://www.reed-sensor.com/Notes/General_Reed_Switch_Theory.htm
You have to tell the computer how far the bike moves every time the wheel makes one turn to get an accurate speed and distance reading.
Cateye Wireless Cycle Computer Installation
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Polar CS300 Cycling Computer and Heart Rate Monitor $219.95 The CS300 is a cycling computer and fitness monitor all in one providing valuable feedback on or off the bike. Wireless speed distance and heart rate provides for proper pacing during training or cardio-focused workouts. Calorie expenditure fitness test and automatic target zones based on how the body feels each day makes the CS300 the perfect solution for cross-trainers beginner tri-athlete… |
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Polar CS100 Cycling Computer Heart Rate Monitor $119.95 The handlebar-mounted Polar CS100 combines all the features of a high-end cycle computer with a fully functional heart rate monitor–the Polar T31 coded transmitter. (The similarly featured CS100B offers heart rate monitor compatibility, but does not come with a monitor.) The CS100 provides a full range of cycling computer functions, and adds three new features to Polar’s arsenal: the Polar Cyclin… |
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Polar CS600 Cycling Computer $298.99 Designed for demanding cyclists, the Polar CS600 cycling computer enables you to track the most important data from your training rides with wireless sensors. The CS600 incorporates a comprehensive feature set combining measurements for time, speed, distance, altitude, and incline as well as cadence (with optional sensor). You can prepare a detailed training program with the included Polar ProTrai… |
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New Potato LiveRider Wireless Cycling Computer/ Mount System for iPhone/ iPod touch $68.99 * LiveRider is a wireless cycling computer and mounting system for iPhone and iPod touch. Incorporating advanced 2.4 GHz wireless technology from New Potato, a single permanently-sealed sensor unit that measures both bike speed and pedal cadence is mounted on the bike’s frame near the rear wheel. The LiveRider receiver attaches to the 30-Pin connector of the iPhone/iPod touch and receives speed an… |
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Schwinn 17-Function Bike Computer $11.99 Improve your workout efficiency when cycling with this Schwinn 17-function bike computer. Designed to attach securely to your handlebar, the computer tracks such info as speed, distance, time, and calories burned, helping you develop an effective workout routine with each ride. The computer is easy to install and includes a backlit screen for crisp viewing. About Schwinn Founded in 1895, Schwinn … |
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Bell F12 Bike Computer $7.94 Current speed, average speed, maximum speed, MPH KPH, speed tendency, odometer, trip distance, trip timer, 12 24 hour clock, scan, and auto stop start. Larger digital readout is easy to see. Easy installation, weather resistant. Battery included…. |
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Cateye CC-RD300W Strada Wireless Bicycle Computer $60.00 Sleek, lightweight, and elegant, the slim Strada wireless bicycle computer tells you everything you need to know about the ride ahead. The Strada displays such data as current speed, maximum speed (up to 65 miles per hour), average speed, trip distance, second-trip distance, total distance, elapsed time, and 12/24-hour time. As a result, you can easily assess your cycling workout and use the info … |
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GPS Head-Up Vehicle Speed Display $139.95 Drive safely by not taking your eyes off the road to look down at the speedometer. This GPS Head-Up Speed Display projects your speed right on the windshield. You may also set overspeed warning with the touch of a button. When the preset speed limit is exceeded, a visual indicator lights up and an optional alarm beeps (for up to 15 seconds) to remind you of the speed limit. At 65 mph, looking down… |
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VDP REAR PANEL MESH RHINO 6000 $42.02 Photo`s are for reference only. Please read item title carefully…. |
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Garmin Edge 705 GPS-Enabled Cycling Computer (Includes Heart Rate Monitor) $399.94 Garmin has really upped the ante on the entire cycling computer category with it’s new gps-enabled navigator/computer, the 705. This is a true navigational aid with full-color maps and turn-by-turn directions in addition to advanced route-planning and saving capabilities. On top of that, the 705 adds heart rate and cadence monitors, a barometric altimeter, and wireless capability that lets you sha… |
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