Fuel Consumption Optimax

[brucehawsker]

Is there a clever way I can find out my fuel left? The opti smartcraft fuel gauge proves very inaccurate with my long thin tank, even at rest. Currently I keep a written log, noting fuel used whenever I fill up, and then look at the fuel used number before each trip. Subtracting one from the other gives me fuel used since fill up, and with a nominal 160L tank I assume 140L usable. This gives me fuel available. I fill up if my expected usage + 20% exceeds fuel available.

This seems cumbersome at best, and prone to error!

[Hugh Jardon]

a question for you

do you reckon the smartcraft reads in uk gallons or usa gallons? or is it programmable to either

as for fuel reading i cant help you there

chris

[gavin]

Its not the opti guage that is inaccurate but the fact at rest the rib does not lie flat, Therefore the sender info is not reliable

we use the same system as you total and retotal as you fill, at a glance look at fuel used, in litres

simple subtraction works to tell you fuel left

Higly reliable for us thus far

[mark-f]

best way if you have optimax guages is to calibrate the guage whilst the boat is on the water, once i did that with mine i have found it very accurate.

mark

[qcamel]

I also run the smart gauges and use the fuel used info. Find it very accurate, within 20 litres after burning nearly 500 litres on a long run.

[brucehawsker]

I use litres not gallons so no confusion. Agree the problem is the flat tank....