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Old 06-15-2019, 06:18 PM
TomParis TomParis is offline
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Default Question on prop

So I pulled a boat in today that was out close to the lighthouse, it was a 20 ft boat as well. My question is, after pulling that boat for almost an hour at 5 mph my boat seems to be not running right.

My Question is, would putting my motor under that stress cause my prop hub to fail. Feels like the prop might be slipping not a full fail but not running exactly right either.

Let me know what you think

Appreciate it

Tom
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Old 06-15-2019, 10:29 PM
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Bushwacker Bushwacker is offline
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If itís a conventional prop with a one piece rubber hub, take it to a prop shop and have them check it with a torque wrench. Thatís something I always did every year before I made trips to the Bahamas. If itís a 2-piece hub system like that used on most modern props, you can replace the rubber hub yourself.
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Old 06-17-2019, 07:52 AM
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flyingfrizzle flyingfrizzle is offline
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Quote:
Originally Posted by TomParis View Post
So I pulled a boat in today that was out close to the lighthouse, it was a 20 ft boat as well. My question is, after pulling that boat for almost an hour at 5 mph my boat seems to be not running right.

My Question is, would putting my motor under that stress cause my prop hub to fail. Feels like the prop might be slipping not a full fail but not running exactly right either.

Let me know what you think

Appreciate it

Tom
if your running an older 2 stroke you may of loaded it up with oil. Running at low rpms for extended periods will do that. A few wot runs should clear it out. Hope its something simple for you though. A prop hub would be an easy fix.
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Old 06-17-2019, 09:34 AM
JUST JOHN JUST JOHN is offline
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I just spun a hub a few weeks back. You can take it off and using a punch or scribe, make two aligned marks on the hub and prop, then reinstall and run the boat. Then take back off and inspect your markings for alignment.

In my case there were rubber shards in the hub bore so I didn't do this test. I'll likely never go back to the rubber-insert type again, but if I do I'll reference-mark all hubs/props before running for future troubleshooting.

^I'm thinking the oil-loading issue is a more likely scenario; there was a very clear rpm cutoff where the prop slipped, much like a failing clutch.
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Last edited by JUST JOHN; 06-17-2019 at 09:37 AM.
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