Garmin 305 Speed/Cadence sensor speed magnet.

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General Discussion Triathlon Talk » Garmin 305 Speed/Cadence sensor speed magnet. Rss Feed  
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2006-07-23 12:36 AM

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Subject: Garmin 305 Speed/Cadence sensor speed magnet.
Why does the speed/cadence sensor need a magnet to measure speed when the 305 unit itself will record it?


2006-07-23 2:03 AM
in reply to: #490233

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Subject: RE: Garmin 305 Speed/Cadence sensor speed magnet.
I think it might be because the GPS signal does not always work.  When it doesn't you'd still want to know your speed so it needs a magnet.  It's also probably more accurate using the magnet than GPS.
2006-07-23 8:58 AM
in reply to: #490233

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Subject: RE: Garmin 305 Speed/Cadence sensor speed magnet.
IT would be accurate if you get the right measurement of the wheel right? Does anyone know the measurement for a 650c?
2006-07-24 11:18 AM
in reply to: #490233

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Subject: RE: Garmin 305 Speed/Cadence sensor speed magnet.
I think it might be for when you want to use the bike on a trainer--you can still get a milage read out. I'm not sure about this--I'm trying to find out myself b/c I'm looking to buy the 305 and sensor in the very near future.
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General Discussion Triathlon Talk » Garmin 305 Speed/Cadence sensor speed magnet. Rss Feed