Originally Posted by joakimhansson
Revenger 29 or Scorpion 8,1-8,5 with stepped hull.
With 200-250hp (1 or 2).
You have different props when you have 2 engines so lets say in 45 knots the rpm must be much lower with 2 engines. At top speed it must be close to 2 times fuel consumtion?
And speed diff?
What to expect in speed with 2 engines?
If you go with two motors you likely never want to run a single engine setup again given you can afford the fuel. If cost of gasoline was not an issue many more people on this forum would be running twins imho. The performance will be much better. Holeshot with twins is a blast, my boat is very heavy and it comes up on plane right now, fuel consumption is not that bad if you keep your foot out of it. I have had as many as eighteen people on my boat at one time and it comes right up on plane with no problem whatsover, try that with a single. This is not knocking boats with singles, I ran many single engined rigs over the years and had lots of fun with them, a twin setup will give you better overall performance as I see it.
When you start looking at larger boats... you'll need two motors....or three... there are a few triple (675 hp) ribs running around over here. Speed is going to depend alot on hull design and power, I get somewhere between 50 and 60 knots with my boat and I would tend to believe it's closer to 50, but then I have a much heavier boat than most. ( it sure busts waves) Performance on a 30 with a couple of 250's would probably put you safely in the low sixties or high fifties I'm guessing...