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Thread: GPS speedo

  1. #1
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    GPS speedo

    Want to put a gps speedo in my 18. I'm confused find em from $150 to $400 and looks like $400 you need to buy an antennae. Makes no sense. Please comment .

  2. #2
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    There are displays, also antennas. Combined, they're pretty expensive.
    There are free GPS apps for your phone.
    A good quality liquid filled Bourdon Tube type speedo will be w/in 1-2 MPH of
    the GPS speed at a significant savings.
    The choice is yours.
    George Carter
    Central Florida
    gcarter763@aol.com
    http://kineticocentralfl.com/


    “If you have to argue your science by using fraud, your science is not valid"
    Professor Ian Plimer, Adilaide and Melbourne Universities

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    Thanks where do I get the bourbon tube

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    Friend just bought a gps speedo $200 supposed to be all inclusive but not yet installedu

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    Brand is sunset

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    Gaffrig Performance still manufactures their own liquid filled speedometers.
    http://gaffrigperformance.com/137-liquid-filled-speedos . Gaffrig supplies these
    gauges in various diameters, maximum speeds, and finishes.
    I guess more and more of the low cost gauge builders are supplying lower cost
    GPS speedos. After searching a few, I noticed many are less than 60 MPH.
    Don't forget about the free phone app!
    George Carter
    Central Florida
    gcarter763@aol.com
    http://kineticocentralfl.com/


    “If you have to argue your science by using fraud, your science is not valid"
    Professor Ian Plimer, Adilaide and Melbourne Universities

  7. #7
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    I would just install an app on your iphone. They are as accurate as my dashmount Livorsi and very inexpensive these days.
    1972 16 OB - C16B-63 - "Surface Tension" Resto Project
    1974 16 OB - DMR16106017-B - "The Mule"

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    I have the app guess I don't care about speed unless testing. Thanks guys.

  9. #9
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    Quote Originally Posted by Magnum Ralph View Post
    Want to put a gps speedo in my 18. I'm confused find em from $150 to $400 and looks like $400 you need to buy an antennae. Makes no sense. Please comment .
    Two speeds on water 1) Canal speed 2) WOT

    Cheap out like me and use your cell phone and download a FREE app. You might find your SPEEDO is with in a 1mph or 2mph of GPS. Not worth spending the money for me. JMO
    1994 SWEET 16 (SOLD)
    4.3LX 262 C.I.
    HARDIN Thru Hull Exhaust Tips
    MIRAGE PLUS 25 Pitch Prop
    Top Speed 61MPH/GPS - 4800RPM

    https://www.youtube.com/watch?v=8i0j73l5s2U



    1995 Classic 18
    357 MAG Alpha 4V 275HP
    Thru Hull Exhaust
    MERCURY VENGEANCE 48-16320A46 13 1/2 INCH X 23 PITCH PROP
    Top Speed 64MPH/GPS - 4300RPM

  10. #10
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    Cruise speed counts some too

    Quote Originally Posted by DONZI-DON View Post
    Two speeds on water 1) Canal speed 2) WOT

    Cheap out like me and use your cell phone and download a FREE app. You might find your SPEEDO is with in a 1mph or 2mph of GPS. Not worth spending the money for me. JMO
    I agree that a GPS Speedo is a waist of money these days. A GPS app on a cell is wait I've used. My stock VDO speedo reads 2-3mph fast at WOT but is only about 1mph fast at cruise speed (3200rpm).
    Thanks, Patrick


    1996 22' Classic

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