At the minute i have a 300hp ford sabre. At 2000 rpm i cruise at 10 knots i was just wondering if it would be possible to put a bigger prop on the boat and if it is possible what would be the best size prop for the boat.
Cheers, Bernard Heading www.atlanticandshannonfishing.com
Just found out I need a new prop due to electrolysis. I gave the spec to FAL Scottish propeller service and they ran my data through their computer. The boat was fitted with a 22x16 four bladed prop which cruised at 9.5 kn and gave 15 at full chat. It turns out that the prop was under spec and she should have a 22x18 four blade with a surface of 87%. This should give a slightly higher speed and cruise at lower revs while still making the engine work so it doesn't glaze the bores.
My engine is a 280 Sabre with a 2:1 ZF box so our specs are similar. Hope this helps.
