I have 2004 30' express cruiser with Volvo SX I/O's. A couple weeks ago while cruising at normal speed, I slowed for a large wake, then accelerated. The starboard engine revved to redline and the boat would not get up on plane. The port engine hovered at 3000 RPM. I diagnosed this as a spun prop, and had my local guy press a new hub in the starboard prop.
This solved the problem, however on our second outing with the repaired prop, the exact same thing happened to the port side. I pulled prop and just dropped it off at the shop. I asked the shop owner if the hubs tended to fail with age, and he said it was typically at least 10 years before failure. (These are 7 years old).
I am not aware of ever hitting anything big. We hit sticks and debris every once in a while, but never enough to kick up a drive.
I'm just curious what the typical lifespan of prop hub is. Should I replace them every 5-6 years as a PM item?
This solved the problem, however on our second outing with the repaired prop, the exact same thing happened to the port side. I pulled prop and just dropped it off at the shop. I asked the shop owner if the hubs tended to fail with age, and he said it was typically at least 10 years before failure. (These are 7 years old).
I am not aware of ever hitting anything big. We hit sticks and debris every once in a while, but never enough to kick up a drive.
I'm just curious what the typical lifespan of prop hub is. Should I replace them every 5-6 years as a PM item?
