Originally Posted by Nick Hearne
Are you taking the piss?
140 Susie good for 6m rib, no good for a 8m one!
225 Optie good for a 8m rib too much for a 6m!
No Im not. Sorry if this sounded like a stupid question; I should have been more specific.
We're talking about a 7m RIB here, nothing heavy duty like an Arctic 22 - just a normal 7m RIB.
I'll throw my thoughts in here for people to comment on:
Suzi is much more economical, it is a 4 stroke so sounds quiter and smoother. Speed will be in the reagion of about 35 knots I would imagine.
Opti is a much bigger engine. I would imagine top speed would be around the 50 knots mark. It will be noiser I would think (although the sound of a 225 does apeal to me more than the gentle hum of a suzi 140) and will drink more fuel (and oil of course).
Basically I'm trying to weigh up what is better
Suzi for quiteness and economy
Opti for performance and speed.
Do people think that there would be a dramatic increase in fuel used at say 30 knots with the Opti as opposed to the suzi?