Thread: harmonics
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Old 12-05-2017, 09:50 PM   #1
obenton
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City: chattanooga tn
Country: usa
Join Date: Aug 2016
Posts: 40
harmonics

I have a 1988 californian. Had a slight vibration after touching a muddy bottom. The marina went overboard - I asked them to check the running gear and check the alignment. The props were sent to a local prop shop. I drove the boat back to our marina and immediately heard a squeal from the port side - very loud at 1000rpm then quiet until 1800 and then gone. Felt the shafts underway and no vibration. The cutlass bearings are a year old. They told me it was a "harmonic" and would disappear. I read this can occur due to differences in the trailing edges of the props. The screech is still there. I would love some advice, OB
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