Saturdays Project......Fuel flow Meters

[Motoguy2158]

Installed my fuel flow meters for my Garmin Nav on my 340 Dancer. It was job especially snaking the wires. The garmin net work was the easy part. I have twin 6.2 s and will be interesting to see if my estimates are close. It will also be interesting to see the best efficiency cruising speed. Anybody using this and have some data to share.

 

[hottoddie]

I've had them on my 390 for 6-7 years. 3000rpm cruise yields 34-35 gph and about 23mph. Come out to about .64mpg stays the same mpg even at higher cruise rpms. Your 340 will get about .8mpg give or take.

 

[JVM225]

I had Garmin’s GFS 10’s on my old boat and loved them. Found them to be fairly accurate too.

 

[RollerCoastr]

My 5212 frustrated me because the fuel calculation of the 4XXX-7XXX Garmins only goes to the tenth. I kept a calculator app on my phone handy when I wanted more precise data. It helped that the sweet-spot on my boat is in the mid 7's, so if I didn't have the time or patience to repeatedly divide the data, I could just shoot for the false-yet-happy-feeling .8 sMPG (since it rounds .75 to .8). In some conditions, she just won't return .75 though (at a less-efficient trim or speed, loaded with fuel and water etc.) At that point ".7" just doesn't mean much. I'd have to divide.

I assume you're aware that you can add a "data bar" on the screen to put fuel data on a chart. If you someday decide to upgrade your plotter, the newer software calculates to the hundredth and allows full customization of the fuel data page.

 

[Motoguy2158]

My 5212 frustrated me because the fuel calculation of the 4XXX-7XXX Garmins only goes to the tenth. I kept a calculator app on my phone handy when I wanted more precise data. It helped that the sweet-spot on my boat is in the mid 7's, so if I didn't have the time or patience to repeatedly divide the data, I could just shoot for the false-yet-happy-feeling .8 sMPG (since it rounds .75 to .8). In some conditions, she just won't return .75 though (at a less-efficient trim or speed, loaded with fuel and water etc.) At that point ".7" just doesn't mean much. I'd have to divide.

I assume you're aware that you can add a "data bar" on the screen to put fuel data on a chart. If you someday decide to upgrade your plotter, the newer software calculates to the hundredth and allows full customization of the fuel data page.

Great information...I haven't got that far yet but thanks that will be nice to have.