Thread: Calories expended. Garmin vs Powertap
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Old 09-03-08, 06:34 PM
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merlinextraligh
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Originally Posted by Iamkar33m
I halve the number my Garmin gives me (which is usually close enough to the accurate calorie count).

EDIT: I use the Garmin Edge 305
Problem with this approach is I'm not sure the Garmin is consistently wrong. Today 1625 calories an hour on easy flat ride.
This weekend averaging around 1400 calories an hour going up 8-10% grades busting it.

Depending on wind, grade, aero position, it just seems so much throws it off, that it's not worthwhile.

Just a simple example today , riding along and droping from the hoods to the drops, my speed went up and watts stayed the same. So E on the PT clicked off at the same rate, but Calories on the Garmin started going faster.
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