[SPLASHED] I/O (Sterndrive) Conversion to Outboards

[tpenfield]

I think @nola mike asked about fuel usages vs speed, etc. Now that I have run the boat for a longer period of time, I was able to put some of the mpg data on the performance graph.

I plan on raising the engines 1.5", which should help with the performance, so the numbers may go up . . . (maybe). If they do, I'll be staying with the 19" P props.
.

 

[redneck joe]

is that using readouts or hard math? Wondering with your gauge issues.

 

[tpenfield]

is that using readouts or hard math? Wondering with your gauge issues.

The data is from the real-time readouts of the engines.

I have been recording my overall travel distance vs. fuel usage, but the fuel gauge wonkiness has thrown a in all of that.

 

[Pmt133]

So like 30-33 mph is the "sweet spot' it seems. That tracks with most V-hulls I've had.

 

[tpenfield]

I (finally) took some video of a short run . . .

 

[Lou C]

Nice and quiet!

 

[tpenfield]

How much fuel is there ???

So, I brought 20 gallons of fuel out to the boat, not knowing how much fuel is in there.

The gauge read 20% (150 gallon tank)
I put 5 gallons in . . . the gauge now read 40%
I put the remaining 15 gallons in . . . the gauge read 46%

I took a look at the sender (WEMA 001306) I could not read the MPN off the top, but it looked like the resistance was 185 ohm (aka European). So I set the input translation to 'Europe' . . . no difference.

I'll have to do some more testing . . . maybe it is the USA resistance (240-30)
.
I did check the total fuel used and the port engine was saying 54 gallons . . . and 58 gallons after my running around in the bay. The port engine said 3 gallons, . . . that must be not collecting data. I'll take the port engine to be 1/2 of the fuel usage, assuming both engine would use about the same.

Call it 116 gallons. This season I have put in a total of 170 gallons . . . so about 54 gallons or 36% would remain. . . the gauge shows 46%

 

[Pmt133]

I think raising them is going to get you where you want to/need to be.

 

[aspeck]

I am not showing my wife that video ... last night as we were puttering around a cove she said, "how come this engine smokes so much?" I chuckled and said, "because there is nothing better than the smell of burning oil in an outboard!" She rolled her eyes at me!

 

[alldodge]

I looked up WEMA 001306 and it shows it as 240-30 ohms E to F

So your looking at an actual gauge and not something like Vessel View where you can calibrate it?

 

[tpenfield]

I looked up WEMA 001306 and it shows it as 240-30 ohms E to F

So your looking at an actual gauge and not something like Vessel View where you can calibrate it?

In my research . . . 001306 is the mount style, and there is more specific information on the wiring plate (which I could not read)

Anyway . . . the way it all works is the sender wiring connects to one of the Veratron VMH-35 gauges (3 large round gauges in the helm panel) and it (analog) gets converted to digital information. The VMH-35 then connects to the small gauge (Veratron VMH-14) using 'easy link' which acts as a slave to the VMH-35. As far as I can tell, 'easy link' is like J1939. at least the connectors look the same.

I can configure how the VMH-35 converts the analog signal from the sender . . . there is ABYC-US, Europe, Yamaha, and Custom.

I'd like to verify that the WEMA sender is working properly. Then is is a matter of what the Veratron gauges are doing to the signal.

I'm not a fan of the Veratron gauges, but there was not a lot of options for the type /size of gauge using NMEA200 networking.

 

[Scott Danforth]

I chuckled and said, "because there is nothing better than the smell of burning oil in an outboard!" She rolled her eyes at me!

2-stroke and race gas make me horny

I even have candles on my wish list. But the wife says no

 

[tpenfield]

In other news . . .

I also tested the auto-pilot function . . . there are several different things it can/should do . . .

1. Maintain stationary position (like being anchored)
2. Maintain a certain heading while underway
3. Track to a certain point while underway
4. Route to a destination using waypoints that create the route.

I did not test the stationary position, and focused on the other 3

Heading and track seem to work fine. Track is a little better, because it handle current & wind drift, which heading does not.

I could not get the route function to work . . . I believe there is a network connection needed between the Garmin and the Dometic/Seaways stuff.

That will be for the off-season to figure out.

Anyway, the auto-pilot is pretty cool, as I can set the route to Woods Hole and a few other destinations and have the boat drive (steer) itself.