AdamB
Petty Officer 1st Class
- Joined
- Aug 26, 2004
- Messages
- 251
Hi, I have a 4,000 lbs 21 foot wellcraft cuddy with merc 260 (5.7) alpha one. Anyhow, the original prop that came with my boat (I bought used) was a cupped 14 X 19 aluminum. That will give me approx. 44 mph at 5200 rpms.<br /><br />I got a relatively good deal on a 14.4 X 22 (i know weird pitch) SS prop that the only marking on it says turbo. Anyhow, that drops my rpms down to 4200.<br /><br />I've heard 1 inch pitch drops 200 rpms right? So in my case, the 600 rpms were from pitch increase, was the other 400 rpms from changing to SS prop?<br /><br />Should I just try a 14X19 SS or 13.75 X 21 SS or?????