Reply With QuoteSweet setup! Will be interested in any follow up reports!
Nice rig. Be really interested in your thoughts on the Merc once she's run in and some fuel numbers.Originally Posted by WholeyMackerel
Sweet setup! Will be interested in any follow up reports!
Attachment 119966 This is the fuel economy of the engine. I wasnt trying to save fuel on this trip. I just wanted to get there ASAP.
What prop are you running? I'd have thought that your fuel economy would be better. My 225 does 2.3 km/l @ that sort of average speed. Might be worth having a chat to your dealer.
Yes, I'd be looking at that, thought it would be a bit better. Of course, trip average speed is misleading, if it includes slow running before you get on the plane. That's only 17.6 knots average speed. I'm pushing a heavier boat than you, a Caribbean Reef Runner, with a 150 Merc 4-s , so you should be doing better. Here are some dashboard screenshots.
This is what I call a medium cruise , 4200rpm. (0.8NM/L = 1.48 km/L, 24.3 kn = 45km/hr)
This is a fast cruise, if I'm in a hurry (1.48 km/l, 48.7km/hr)
This is a more normal cruise. the useage will flick around between 0.9 and 1.0 nm/L (1.76-1.85 km/l) speed 39.45 km/hr)
if I want to slow down to the sort of speeds 17.6kn) you averaged, I'm about the same as the figure quoted by CT above, with his 225 , so our useage is about the same. My smaller motor, working harder, equals his larger motor, working less hard, for economy.
14.5x17P Merc Enertia
Same prop here. Height isnt too low?
Interesting. Tat is Exactly what i was running on my 150 with the Reefrunner when initially installed. Couldn't really get the revs, topping at 5400-5500, IIRC. (5200-5800 rec)They gave me a 14.5 x 16 to try--same revs exactly, less speed! Went back to the 17, and they then reckoned it was the prop of choice for this motor/hull combination. Forward, and extra gear on the boat meant I was only getting the 5200. So I went with a 15x15 Enertia, gives the results shown above, and peaks at 5650 or so fully loaded.
not sure mate
My revs toppign at topping at 5400-5500 too. I wonder if going smaller prop like you will be better.
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