Vipermax Fuel Tank Gauge Query

[Richard Selman]

Anyone know what type of fuel gauge is installed on recent osprey vipermaxes and how it works?. Writing on the probe flange is partially covered by gel.

Trying to get it to connect to a Yamaha digital gauge. Has three options, US, Europe and Yamaha. No setting shows anything but zero and I think that I must have poured about 40% into the tank.

Cheers
Richard

[Top banana]

I had same problem fitting mine to smartcraft gauges. and had to change the
analouge sender fitted to the osprey for a digital sender unit, digital sender cost 45.00 from barrus.

[Hightower]

I can tell you that it is a 240/33 Ohm 12v sender which is marked as standard (sender is used on all Ospreys) as opposed to a 10/180 Ohm 12v VDO sender.

You might have wired it up wrong.

[Richard Selman]

Anyone know what option this corresponds to on the display
US, Europe or Yamaha.?

I had a peek at the rigging guide when the engine was being installed and I remember that this showed the resistance range for each option but I cannot recall the figures now. The manual for the display only has the options (pish).

Hightower - what method does the probe use to measure level? How come it does not need to be calibrated?

Cheers
Richard

[Hightower]

I don't know how the sender operates, but I assume it's by reed switches with a magnet on the float jobby. My Evinrude is American by brand and I think the system check commander would be set up as American by default, however I'm not using the commander as a gauge and have an analouge gauge fitted, this is also a genuine Evinrude part and that plummed staight into the sender. I have to admitt to having brain faid at the wiring stage, but that was sorted quickly once someone showed me the errors of my ways

Here's a link

[Richard Selman]

Did I read the thread correctly - your sender has 3 wires?

Mine only has two - brown and blue.

The display has two connections one marked + and one marked -.

Richard

[Hightower]

No, my sender only had blue and brown like yours.

That's strange, your gauge only having two terminals. Mine had three, one was from the positive accessory circuit from the engine loom, one was to earth - and the other went to the sender of which the other wire from the sender went to earth too.

Are you sure you're not making the same mistake as me and thinking one terminal is the light?

[Richard Selman]

Don't think so. I have the funky yamaha digital network gauges. There is just a bus wire to the fuel/speed gauge over which its get power and all the info from the engine and then another breakout lead for 2 NMEA connections and 1 fuel sender. Its cool to get all the info in one place and with so little wiring however they are real hard to see in sunlight and when bouncing along a bit. Seriously considering an analogue tacho as well. First two digits of the revs (ie. 20 = 2000) not ideal.

Got my multimeter in hand. Going out now to sweep of the ice and see whats up. I may be some time......

Richard

[Richard Selman]

Reads 250 ohm with the trailer level and 195 ohm with the bow jockeyed up a bit. Did not get to see where the sender is in relation to the tank. Should sender resistance increase or decrease with level.

Should have seen something on the gauge. Need to speak to Yamaha I suppose.

Off in an hour to try new 23" P 14.2" D prop.

Richard

[Chris]

Richard,

Do you already have a fuel gauge connected to your sender or do you just want to use the digital one?

If you already have a gauge connected you will not be able to run the digital gauge at the same time its one or the other. Been there, tried that !

US mode is 240 - 33 Ohms
EU mode is 180 - 10 Ohms

[Richard Selman]

No - just the digital gauge.

195 ohms would be 22% of 240 - 33 ohm range.

Is it likely that the this is not enough to register on the display? - ie. perhaps the display is calibrated to leave this as reserve? I will try and get hold of variable resistor to test it out.

Richard