Monday, June 9, 2014
My cruising RPM was 3200 at 5 knots and if I wanted to get to 5.5kn I would be pushing 3500 RPM. While this RPM is still within the tolerances for the engine, it created a lot of unnecessary noise and vibration.
My old prop was a two blade 12x6 and it was undersized. I'm sure this helped a bit in my club racing since it had lower drag, and it was tolerable for cruising under power but it was an issue fighting heavy currents large waves. A sketchy trip through Letete Passage last year (yes, at the wrong tide...) confirmed my need for more available speed.
After a recommendation from Bill on Lady Hamilton I picked up a prop from Indigo Electronics. Indigo was very easy to deal with and were quick sending out the prop. The prop is a three blade 10x7.4 and seems to be of high quality.
After finally launching this weekend I was happy to test out the prop and see the results. My cruising RPM is now at 2600, at 5kn. This is still a little higher than desired, but much better.