Adapting CanDooPro digital GPS speedometer for NGI display on Polaris MSX hulls

[Mr. GP1800]

I received my unit, and installation couldn't have been easier. Complete plug and play. Unplug the paddle wheel from the harness, plug in the GPS unit and connect it to the battery.

Calibration is a piece of cake. This is truly a great add on to any MSX.

I even got in a test ride with it already. Its dead on with my handheld. I think it actually updates speed faster than my handheld does.

[Mr. GP1800]

Anyone else out there put one of these in their MSX? What was your experience? This is a first rate unit and I highly recommend it. The calibration is a piece of cake and the accuracy is dead on. If anyone has questions I will be happy to answer them for you.

[Kosh]

Anyone else out there put one of these in their MSX? What was your experience? This is a first rate unit and I highly recommend it. The calibration is a piece of cake and the accuracy is dead on. If anyone has questions I will be happy to answer them for you.

Love it, not all genuine Polaris as it ris running a the seadoo dash, but it is an install and forget addition.

[Mr. GP1800]

Anyone else out there put one of these in their MSX? What was your experience? This is a first rate unit and I highly recommend it. The calibration is a piece of cake and the accuracy is dead on. If anyone has questions I will be happy to answer them for you.

Love it, not all genuine Polaris as it ris running a the seadoo dash, but it is an install and forget addition.

Thats awesome to hear. Im glad others are having the same experience I am having with these.

[UnityRacing]

I will get one for sure, but need to build the ski before I buy extras.

[Jetracers]

which sea doo model is the one compatible with the ngi, I don't necessarily need the polaris one as I'm adapting the ngi to my slt 780 and will be cutting the plug off anyway

[Mr. GP1800]

which sea doo model is the one compatible with the ngi, I don't necessarily need the polaris one as I'm adapting the ngi to my slt 780 and will be cutting the plug off anyway

Why not just get the msx version? You are cutting the plug off regardless

[Jetracers]

Why not just get the msx version? You are cutting the plug off regardless

I was going to try to save a few bucks by getting one off ebay or if new was hoping it was the one thats cheaper than MSX version

[swan]

I have a 2003 Polaris MSX140 whose speedo doesn't work. All other gauges appear OK and the ski is otherwise in good condition.

I have performed the test on the paddlewheel as set out on page 7.7 of the MSX140 Service Manual. At rest, my ohm-meter shows an open circuit and when I spin the paddle wheel (by hand and with compressed air) the reading doesn't change.

I have a spare paddle wheel which was removed from a ski in which the speedo worked just prior to de-commissioning the ski 3 years ago. Bench-testing that paddlewheel yielded the same result as above.

I wonder whether these units lose their efficacy through non-use. Some paddles on the de-commissioned paddlewheel show signs of retained magnetism; however, I'm not sure how relevant that is to the component's operability.

I note that a couple of US vendors currently offer second-hand paddlewheels for sale, but as it appears likely that I will have to replace a speed actuating device of some sort, I wonder whether the Polaris version of the CanDoo Pro GPS speedo module is a better alternative.

I hope someone might provide some guidance on my predicament.

Chris

[martincom]

It would seem very odd and an extreme coincidence that you would have two defective "paddle wheel" sensors. Not to insult your intelligence, but does your ohm meter read zero or near zero ohms when the leads are shorted together?

Where are you measuring resistance at the installed unit? At the paddle wheel connector or elsewhere?

[K447]

I have a 2003 Polaris MSX140 whose speedo doesn't work. All other gauges appear OK and the ski is otherwise in good condition.

I have performed the test on the paddlewheel as set out on page 7.7 of the MSX140 Service Manual. At rest, my ohm-meter shows an open circuit and when I spin the paddle wheel (by hand and with compressed air) the reading doesn't change.

I have a spare paddle wheel which was removed from a ski in which the speedo worked just prior to de-commissioning the ski 3 years ago. Bench-testing that paddlewheel yielded the same result as above.

I wonder whether these units lose their efficacy through non-use. Some paddles on the de-commissioned paddlewheel show signs of retained magnetism; however, I'm not sure how relevant that is to the component's operability.

...

The paddle wheel sensor is a Hall Effect sensor. It is powered by a low current voltage source from the display. As the magnetized paddles pass the sensor the sensor changes resistance, creating a pulse that the dash senses. Pulse counting creates a speed reading.

The polarity of the test voltage applied to the sensor wires matters. If your ohm meter has opposite polarity at the probes or the voltage is out of range for the sensor then the sensor will not work.

[bspanovic]

Hi Swan, I have a msx140 speedo that I don't need. I think it works but I have never tested it as I don't have MSX. Yours for aussie $30 if you like.

[swan]

Thank you bspanovic, I will PM you.

[swan]

Thanks, K447.

When I tested the de-commissioned paddlewheel in a ski (today), it appeared to work alright. Not sure what I did wrong with my multi-meter test of the paddlewheel alone!