RGM - I meant to post back about our Flexofold, but have had a few distractions lately. We (wife and 3 kids) moved onboard at the end of May. It's all gone really well and the kids
love it, but WOW is it a challenge getting through all the junk we accumulated over the years. We will depart from Puget Sound
on 8/21 - first stop San Francisco
The flexofold is excellent! It has more then met my expectations. I'm fairly certain that the old prop (Martec) was not spec'd right for the boat/engine; however here is the short list of differences (engine is Yanmar
1. Increase in top speed from 7.1 to 8.4 knots (3450 RPM). For sake of comparison, and not debate, I know of another Stevens 47 with the same engine and a MAX prop that tops out at 8.2 knots.
2. At 7.1 knots now (about 2600 RPM) I burn at least 30% less fuel
then before - this is huge.
3. There is less vibration and noise
when motoring (likely indicates the old prop has problems even though on inspection
there was nothing obviously wrong).
4. I've not sailed enough with it yet to say that there is a gain in performance - though looking at the 2 props side by side and Flexofold has a significantly smaller footprint.
5. It was very simple to install.
6. In reverse - I clearly have less power then before. So far I find this translates to mean I use higher RPM
to acheive the same things as before. That said, I find absolutely no problem manuvering in reverse.
Chuck Angle, the Flexofold distributor, was very helpful in spec'ing out my prop. I have no conection to Chuck or Flexofold; I do know one of the owners of PYI, the distributors of MAX prop. This weekend I plan to dive and inspect the prop (along with other bits and pieces). If I find any issues with it, I'll pass that info along next week.