Disorderly, you obviously have little understanding of the accuracy of todays electronic measuring devices. I travel several hundred kilometers each fishing trip and the gauges totalise fuel usage to within 2% of actual consuption....Love the spread sheet...however I do wonder how a 6.2 m cabin boat with a 175hp motor can acheive 2.0-2.2 km/l....
I only have a 90 2 stroke DI and a pretty flat bottomed hull and my figures in average condtions can often be around that and if the weather is great up to a max of 2.5km/l....
My figures,however are not taken off gauges but actually how many litres I need to refill for a X amount of distance travelled...I find it quite misleading to judge the economy of a motor simply by what a computor readout states but that's life I guess....
Some real world trip figures with the style of fishing and sea and wind conditions would be much more helpful ,though.
Having said that,though....is somebody that can afford to fork out the kind of dollars to buy and maintain such a rig necessarily going to be too concerned about a few decimal points when it comes to fuel figures or servicing costs...
Realistically....probably not..
Realistically... as a matter of fact its actual
Never said the gauges weren't accurate ,just that the only real figure that counts for me is distance traveled and how much fuel was consumed...Originally Posted by tinman
Disorderly, you obviously have little understanding of the accuracy of todays electronic measuring devices. I travel several hundred kilometers each fishing trip and the gauges totalise fuel usage to within 2% of actual consuption....
Realistically... as a matter of fact its actual
Scott - on the devices that gather information from the engines ECM such as the EP20 you can choose to display all sorts of information when they are interfaced with a GPS on screen such asNever said the gauges weren't accurate ,just that the only real figure that counts for me is distance traveled and how much fuel was consumed...
Fuel Burn per hr
Nm per litre (or Km/lt)
Fuel Used
Fuel Remaining
Distance traveled/remaining on tank etc
As long as you reset the fuel when you fill they are extremely accurate in just the way you mentioned above. One other thing that is amazing to see and I have mentioned it before is just where the sweet fuel consumption (Nm/l) is according to the interface. The boat and the engine sound/feel sweet running around 4500 rpm and doing 25-26knots (which is the way I used to drive it ie ear and feel) but by backing it down to 3900 doing 20-21 knots the fuel saving is huge on long trips.
One other benefit is that on larger underfloor tanks (200 lt plus) you can utilise more of the tank capacity and do multiple trips without refilling and still retain a degree of safety. Before I had the interface I refilled the tank out of habit/safety on each trip. With the condition of fuel and time between trips I now prefer to try and use as much of the 200 litres as I safely can before topping up.
An average offshore snapper trip for me would be approx 70nm round trip. I would be lucky to squeeze 70l back into the tank.
Chris - You got my figures for the 150. I personally doubt you will need a 200 on the back of the Profish. The 150/175 would be the ideal outboard imo. Go see Col - he will look after you.
Cheers
Greg
the other thing that i'd have to decide was what prop. By the sounds something like a 21' would be the go. Greg i will ring Col. eay serviceing there up the road..
planning the next onslaught 6.5m Profish
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