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Home » Lose Weight Fast » Cycle computers everything you need to know – road.cc

A cycle computer provides a range of information about your ride, from basics like speed and distance to time to your destination, bragging-rights fodder like maximum speed and even the time of sunset. And cyclists love numbers weights, wheel sizes, frame geometries so a cycle computer can add a useful extra dimension to your riding. Here's a look at what a bike computer can do for you.

The way a cycle computer works is simple. Each time a magnet on the wheel passes a sensor on the fork a signal is generated. The bike computer measures the time between those signals and works out how fast you're going, based on the wheel dimension you gave it on initial set up.

From that measurement the computer can also work out a whole range of information including distance, average speed, ride time and maximum speed. Depending on the designer's choices it may also have features like auto on/off pausing the stopwatch when you're stationary and different types of timing and average speed. You may get average speed only when you're moving, or for the whole ride, and likewise for time.

More sophisticated cycle computers may also be able to warn you if you drop below a target average speed, say, or provide an estimate of how long it'll take to arrive at your destination.

Some bike computers can measure your heart rate by picking up signals from a sensor strapped to your chest. Heart rate is a useful indicator of how hard you're working if you're riding for fitness or, say, to lose weight.

Some cycle computers with heart rate function will also provide an estimate of how many Calories you've burned. With rare exceptions, these should be taken with more than a pinch of salt. They are useful for comparing one ride with another, but don't hit McDonald's hard just because a computer says you've burned off the equivalent of three Big Macs.

In cheaper bike computers the sensor and handlebar unit are connected with a wire; more expensive computers use a wireless transmitter in the sensor. Wired cycle computers only have one battery to run down, but make your bike look untidy and the wires can get damaged. Wireless bike computers need a battery in the transmitter as well as the head unit, but are tidier and have no wires to snag.

If you're going to use a computer with a turbo trainer, the magnet and sensor need to read from the rear wheel. Some wired cycle computers won't reach far enough and (more rarely) some wireless units have sensors that won't fit the chainstays.

Cycle computers will usually keep out heavy rain, but experience shows the level of water resistance varies. In particular, models with altitude functions should not be immersed in water. They need a vent in the case for the altimeter to work, which can let water in.

The level of water resistance is indicated by the IP Code, which shows the level of vulnerability to dust and water ingress. Not all manufacturers provide it, but it's a useful guide if they do.

You'll find these features on bike computers priced between about 10 and 40. More expensive units in this price range have bigger screens so they can display more information at once. Some have extra features such as the ability to switch between preset wheel sizes so you can switch them between bikes.

Speed How fast you're going.Average speed Can be measured only when the computer detects movement or for the whole period between starting and stopping the timer.Maximum speed For gravity-assisted bragging rights.Cadence How quickly your legs are turning. Needs an extra magnet and sensor on the crank.Average cadenceMaximum cadence For 'how fast can you spin' contests in bike shops on rainy Wednesday afternoons.Ride time Can be measured only when the computer detects movement ('moving time') or for the whole period between starting and stopping the timer.Time of day For people who still think digital watches are a pretty neat idea.Over/under average speedRide/trip distance How far you've been on this ride.Odometer How far you've ridden. Some cycle computers allow you to set an initial value so you can carry your records over from a previous unit. Or cheat.

From about 50 and up you get extra features such as heart rate detection, altitude and the ability to add even more features by pairing with your smartphone.

Heart rate How fast your heart's beating. Requires monitor strap round your chest.Average heart rate Indicates how hard you have worked over a whole ride.Maximum heart rate The biggest effort you've put in.Altitude Height above sea level. The unit measures atmospheric pressure and extrapolates your altitude from that.Maximum altitude The highest point you reached.Total ascent Bragging rights for Alpine pass-storming. Less useful in Cambridgeshire.Total descent What goes up must come down.Temperature Often comes with altitude as it's needed to interpret the pressure sensor data.

Different computers will have different sets of secondary functions that rely on these. These include heart rate zones and targets for training, elevation profile, lap timers, averages and maximums per lap and so on. You may also be able to download ride data from the computer to analyse later.

The latest generation of cycle computers come with apps that wirelessly connect the head unit and your phone. That means as well as its built-in functions, the computer can access your phone's sensors to provide functions such as using Global Position System (GPS, the basis of satellite navigation) to record where you've been.

Why not just use an app on your phone? The main advantage of a phone/app combination is battery life. A phone running GPS and screen will drain its battery in a matter of hours. Turning the screen off increases the run time.

Another advantage is that instead of being perched on your handlebar, your expensive phone is safely tucked away in a pocket or bag.

Bike computers with smartphone pairing also record data from your ride for later analysis.

Computers that pair with smartphones cost about 100.

As mentioned above, if you have a smartphone, the cheapest way to get GPS recording is to get a computer that will talk to it. If you prefer to have everything in one box, then you'll need a GPS-enabled computer.

Cheaper models use GPS to record where you've been and may have minimal navigation functions, but if you want full sat-nav capability you'll need a more expensive model with a screen large enough to display a map.

Basic GPS-enabled computers can be had from around 80, while a unit with maps and sat-nav functions will cost from 140.

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Cycle computers everything you need to know - road.cc

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Home » Lose Weight Fast » Cycle computers everything you need to know – road.cc