Hi. I have recently had a new prop
Installed on my sail boat
. After having the old one for almost a year, the new engine
can finally rev above 1500rpm
There is now a strange noise
that comes and goes at certain rev ranges of held steady at above 1500rpm.
I understand it maybe ď singing ď harmonica of the prop.
Does anyone have any info or experience on this.
Attached is a vid of the noise