Victor Copelan
Member
Yea, I know this is a strange one....
Two weeks ago I finished the second installation of a new engine in less than a year. This one seems to be a keeper but that is another, long story.
Either the transmission or the prop "sings" for lack of a better description - the sound it makes if very musical. At about 1000rpms a sound like the harmonic you get when you wet your finger and rub it on the rim of a wine glass. At 1100 rpms it deminishes to the point it is tollerable but is still there all the way thru the rpm range - at 1000 to 1100 it is loud.
The transmisssion is hydrolic made by twin disc, shaft is 1 1/4", distance from cutlass bearing to prop is about 2 1/2", prop is a new 17x12 Michigan Wheel (I had it balnced & mated to the shaft). Beta Marine, the engine manufacture says it is the prop making the noise. I tend to agree with him but have been snake bit once too often.
Any thoughts?
Thanks,
Vic C
Two weeks ago I finished the second installation of a new engine in less than a year. This one seems to be a keeper but that is another, long story.
Either the transmission or the prop "sings" for lack of a better description - the sound it makes if very musical. At about 1000rpms a sound like the harmonic you get when you wet your finger and rub it on the rim of a wine glass. At 1100 rpms it deminishes to the point it is tollerable but is still there all the way thru the rpm range - at 1000 to 1100 it is loud.
The transmisssion is hydrolic made by twin disc, shaft is 1 1/4", distance from cutlass bearing to prop is about 2 1/2", prop is a new 17x12 Michigan Wheel (I had it balnced & mated to the shaft). Beta Marine, the engine manufacture says it is the prop making the noise. I tend to agree with him but have been snake bit once too often.
Any thoughts?
Thanks,
Vic C