Originally Posted by codprawn
I am a bit concerned about how well a 19" pitch prop will push my boat along - it may be too fine for a heavy boat with 500 litres of fuel.
Am I right in thinking that a 19" 4 blade will behave more like a 21" 3 blade or doesn't it make much of a difference - also as I have a transom jack will loweing the prop in the water overcome the fine pitch?
Sorry codders, on the second bit.. pass. On the first - its more trial and error and good trim. With the 225 go for a 23". On my 250 yams - the 25" gives 56.knts - but loosing 500 rpm. Johnny Fuller should advise you on this.
The 19" is probably not the right one for a 225... but its realy trial and error.