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Bike Computers

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Computers / HRMs

If you want to go fast, training is everything. Keeping an eye on your pace isn't always easy. A good bike computer is like having your own personal trainer sitting on your handlebars (without the extra weight of course) yelling at you to speed up when you start slacking off and telling you to pace yourself when you start going too quickly. With built in heart rate monitors, you can take your workout a step further by keeping your body working in a target heart rate zone to maximize your workout.

Some key features to look out for when choosing between units are wireless links between sensors and the computer (this keeps your bike from looking like the backside of your desktop), heart rate monitors (these keep you working at a target exertion level and not just a speed), and cadence sensors (which are great for roadbikers as they make sure your rhythm is constant).
Popular Computers / HRMs (View all Computers / HRMs)
Garmin edge 800
$349.99 - 650.00
Garmin Edge 500
$149.99 - 369.99

Key Features

This is the ability for a computer's sensor to broadcast its signal via radio frequency to the computer on your handlebars. This is very helpful to mountain bikers, who quite regularly have branches reaching out and grabbing the cables on their bike. Road riders like them as well because they are easier to set up and ultimately are simple and clean looking.

If you ride with a group of people, like in a race, then it might be a good idea to get a unit with a coded signal so you don't pick up other signals accidentally.

Heart Rate
Heart rate sensors are normally on a strap you wear across your chest that broadcasts heart beat info to the computer. These allow you to maintain a certain level of constant exertion, which tends to be the most effective way to work out.

Speed and Distance
Virtually all computers keep track of speed (mph) and distance (miles or meters).

A cadence sensor typically installs on your crank arm and keeps track of the rotations your legs make per minute. Experienced road racers will tell you that it is good form to keep a consistent cadence over all speeds.

However, for most mountain bike riders, this isn't a problem because pedal cadence is often dictated by terrain to give the rider more clearance for going over roots, etc.

High end bike computers can sometimes compute power by measuring speed, cadence, and chain tension. This is important if you need to know how different slopes and conditions effect your ride.

Some high end units also incorporate GPS to their computers, and often supply you with a program that tells you how you are performing at every spot on your ride when you upload your ride data to it. This is great for going over your ride with a fine tooth comb (or an alibi if you require one).
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