[jef.blanc]

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[kencausey]

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[r1chb]

As the driver, you have a lot on your plate. So let us take a few tons of weight off your shoulders with AutoWake®. Our patented technology shines as a wakesurf and wakeboard autopilot system so you can keep your focus where it should be—on delivering a great day on the water. more

[elody69]

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[manixrock]

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[BobLemoine]

I think the whole dual speedo is still kind of a carry over from tournament requirements when boats all use the pitot tube speed pickups. Each speedo had its own pickup so they could be used independently to verify each other. Since paddlewheels have been in use, both speedos are wired to the same paddlewheel so there isn't really a way to use one to verify the other. I think they keep them both in there now for a few different reasons. One reason is simply because it's always been sort of a trademark and something that is different about tournament boats. Secondly because there is still a chance that a speedo could fail during a tournament and you'd need the second one as backup. Lastly, because perfect pass is becoming almost standard they just put it there if you don't get perfect pass so they don't have to change the dash or the build process around it thus making everything easier and more uniform. here

[Saul]

We use a GPS to verify (because we do not have a slalom course to time (and who knows how accurate most recreational courses are anyhow?).

[Mackendra99]

Our 99 Mobius uses dual pitot tubes (on opposite sides of prop) so the speedos are independent. This has come in handy, especially on lakes that are weedy when the pickp may become temporarily obstructed.

[Albert Novel]

This may seem like a stupid question and don't ask why I'm just now asking this since I've had my Mobius for 4 years now but. does anyone know why there are two speedometers on the dash? I'm thinking of pulling one out and putting in the Pefect Pass system in it's place. However, I don't want to screw anything up should they be linked together somehow. Thanks,

[ledskof]

Your speed is off because of the water current and not because the speedo was calibrated to rpm. The GPS is measuring your land speed only while the speedo is measure in the speed at which the water passes under the hull of your boat. If you set your speedo by your GPS going upstream, the speedo will always read the same as the GPS in that direction. Once you head downstream though, the GPS will show you as moving faster at the same indicated speed on the speedo. To help keep relative speed across the moving surface of the water the same in both directions to help out boarders or skiers you need to know the water current speed. Make a run upstream at a set speed on your GPS and see what your speedo says. Make a downstream run at the same speed on the GPS and see what the speedo says. Take the difference in speedo readings and you'll have your water current speed. Add that number to your GPS speed running upstream and subtract it going downstream and you'll have you actual water speed. In your case though, it sounds like the currect speed is slow enough that you wouldn't really notice a difference. [links]

[Elanthius]

Maybe the battery is going??

[Regent]

Anyone have a sure fire method for easily testing speedo lines for leaks? here

[Elanthius]

Any help greatly appreciated.

[dwdollar]

Does any of this sound right to anyone? more

[hlubagrays]

i too have been having this problem on my '01 malibu response lx.

[merlenebarrettl]

I would search this board for threads about the Medallion Controller that drives all the gauges. Somebody named gaugeman listed a fix that worked for me.

[telyni]

Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting. holy shit. what a ride!

[turnerny75]

I keep my handheld GPS in the glovebox so that I can calibrate it each time out. I usually set the left one to wakeboarding speeds and the right on to slalom speeds as they are not entirely accurate.
I will be adding Perfect Pass to replace the right one next year.

[seeger418]

i time my PP with magnets in the slalom course and from there calibrate the digital speed display on PP. I do believe GPS can tell you the speed, but I have never tried it. there are plenty of others on here that probably know how to do that.

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