Originally Posted by smokie
I would like to someday buy a 7.5 to 8.0 rib to make a long trip where there are few fuel facilities. I favor outboards simply because I do not want space taken up inside the boat.
Can we hear from people that have ribs in this range.
What brand rib?
Single or twin outboards?
Two stroke or four stroke?
Size of fuel tank?
Speed and burn rate at optimum cruise.
Here are some thoughts:
Go for single (big!) outboard, plus small aux engine to get you home.
Engine brand - new 'rude Etec is probably the most efficient 2 stoke available now. The Suzi 4 strokes look good on paper. In my view the Merc Verado is too heavy to offer any real advantages & I have heard of a few mechanical failures on early models.
2 stroke or 4? Well, the latest generation of 2 strokes seem to be very efficient and are much lighter than the 4 stroke alternatives. It may all come down to whether you want the hassle of topping up the oil on a regular basis.
The size of fuel tank will probably be set in the boat spec by the builder, but at least 230 litres I would say.
Fuel rates on the Scorp with the Etec 250 (with a 26" raker prop) at 38Knts we were burning 15gph, at 44knts 18gph & 48knts 21 gph. All US gallons. 35 knts is probably the optimum cruise speed.
On the question of which brand, my preferance is well documented on this site. However, what I would say is which ever brand you chose, go for the 8m rather than 7.5, even if it means spending less on the engine of choice. We have done some tests in the same brand of boat and the increase in sea keeping & comfort is tangible in the larger boat.
All IMHO of course!