Originally Posted by Sunstreaker
Interesting question. If costs and storage were not a problem to the OP, what would people's advice be. 5hp four stroke, any higher or lower suggestions?
I realise everyone has different ideas, but personally I would not dream of going to sea without a back up engine. My main engine is very reliable..but things like starter cords can snap or the prop can hit submerged objects rendering the outboard engine unusable.
This SIB is 4.3 meters long and the 3.3Hp 2 stroke will happy push it along at displacement speeds of around 4 or 5 knots.
I dont know what strength of currents that happyharry is referring to in the river..but if they are strong currents..then I would use the 20 HP in those and switch to a small back up engine when happily plodding along in the deeper quieter parts of the river. Its far easier on the ears too.
A small second hand auxilliary engine can be picked up quite cheaply and certainly gives me piece of mind having two on the boat. I consider myself lucky as I have two x 2strokes on the back of this SIB and they probably have a combined weight of less that one modern four stroke main engine.