M25XP w/ HBW50 Transmission - Singing Prop

Aug 2, 2010
502
J-Boat J/88 Cobourg
Ward, does it sound like this?


I tried filing the edges as described in a couple of places with not effect. Going to change to a folding or feathering prop for net year and hoping it will stop the noise. Fortunately for me the rpm band is not one I need much so I can ease along or do cruising speed without the noise.
Dam
 
Oct 26, 2010
1,883
Hunter 40.5 Beaufort, SC
Maybe Maine will chime back in. I wouldn't jump on the singing prop tips if the sound is the same with the shaft turning and stopped (which I interpreted from the previous posts). Hopefully Maine will answer if the symptoms presented (sound when shaft stopped and sound at a particular rpm is consistent with a singing screw. My only experience with signing screws was on nuclear submarines.

Trying to "file it" to correct the problem might be very hit and miss.
 
Jan 27, 2008
3,045
ODay 35 Beaufort, NC
Filing it might give you a balance problem. You are removing weight at the farthest distance from the center of rotation.
 
Jan 25, 2011
2,391
S2 11.0A Anacortes, WA
Probly no more than some barnies setting up camp on the prop. The few times I had a singing prop, I hopped overboard and smacked the blades with a hammer. One smack per blade on three blade fixed.