Anyone else boating faster this year?

[Dave R]

Originally Posted by BroadHopper

WOW! I have a VDO speedometer with a pitot. It's reading is all over the place compared to my hand held GPS. At 25 mph the GPS reads 30 mph. At 45 mph my GPS read 40. At WOT it is 60 mph versus 68 mph on the GPS.

My on plane speed is 30 mph on the GPS compares to 20 mph on my speedometer. Last night I was out after dark and use my GPS to maintain 25 mph. My boat won't plane and put out one heck of a wake!

The pitot is in my Bravo 3 drive leg and feeds the OEM Faria speedometer. It's suprisingly accurate. The GPS is a Standard Horizon CP155C. The paddle wheel is connected via an NMEA2000 bus to my Lowrance LMF-200 multi-purpose gauge (my GPS is NMEA183 compliant, not NMEA2000, hence the paddle wheel for speed). Adding speed information and fuel flow sensor to the LMF-200 allows it to display MPG and range.