Join Date: Apr 2006
Thanked 253 Times in 248 Posts
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Re: GPS Speedo?
Got an obsolete Android phone? If not, you can also buy one dirt cheap, just install a GPS speed app on it, a 12v power cord, and velcro it in place until you get a new paddlewheel.
An intermittent paddlewheel speed is usually a bad connection, corroded, loose, or cold solder joint. Could be the cable or the instrument.