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How do i calibrate the wheel circumference 700x25c into the Garmin 800 or does it set itself using satelites? Ive tired all ways to sort it but cant.The hand book has no mention on the matter.

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charliemac74 [189 posts] 4 years ago
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You don't need to set anything, just turn it on and go.

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the_mikey [160 posts] 4 years ago
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It uses GPS, it doesn't need such information as wheel circumference measurements.  1

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Bez [599 posts] 4 years ago
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You need to lay your bike on its side when you first turn the unit on each time. This gives the satellites a clear view of your wheels, allowing the unit to calibrate itself for whatever bike you are riding that day. Once the unit has gained a full signal you can pick up the bike and just ride.

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big mick [183 posts] 4 years ago
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Bez wrote:

You need to lay your bike on its side when you first turn the unit on each time. This gives the satellites a clear view of your wheels, allowing the unit to calibrate itself for whatever bike you are riding that day. Once the unit has gained a full signal you can pick up the bike and just ride.

I need advice not jokes

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big mick [183 posts] 4 years ago
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Bez wrote:

You need to lay your bike on its side when you first turn the unit on each time. This gives the satellites a clear view of your wheels, allowing the unit to calibrate itself for whatever bike you are riding that day. Once the unit has gained a full signal you can pick up the bike and just ride.

I need advice not jokes

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big mick [183 posts] 4 years ago
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the_mikey wrote:

It uses GPS, it doesn't need such information as wheel circumference measurements.  1

Cant use gps indoors on a turbo trainer so ive fitted a cadence/wheel sensor hence my problem

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dave atkinson [6224 posts] 4 years ago
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Menu > Bike settings > Bike Profiles > your bike > Bike Details

Set your wheel size there

then Menu > Bike settings > Bike profiles > your bike > ANT+

to pair the sensor

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big mick [183 posts] 4 years ago
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dave_atkinson wrote:

Menu > Bike settings > Bike Profiles > your bike > Bike Details

Set your wheel size there

then Menu > Bike settings > Bike profiles > your bike > ANT+

to pair the sensor

Spot on Thanks Dave that worked a treat