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Old 01-27-2016, 09:12 AM   #21
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Why are you guys scared of drilling dimples in you prop shafts?
I dont know why. It is probably an unreasonable fear.
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Old 01-27-2016, 08:10 PM   #22
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I dont know why. It is probably an unreasonable fear.
I think you're right.
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Old 01-28-2016, 12:12 PM   #23
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Gremlins??
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Old 01-28-2016, 06:07 PM   #24
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Quote:
Originally Posted by Capt.Bill11 View Post
Why are you guys scared of drilling dimples in you prop shafts?
It creates a stress riser in the region of the shaft with the highest stress. Same thing as why it is so important to fair the keyway properly to avoid shaft fracture. Not a big deal if shaft is lightly loaded.
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Old 01-28-2016, 07:32 PM   #25
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It creates a stress riser in the region of the shaft with the highest stress. Same thing as why it is so important to fair the keyway properly to avoid shaft fracture. Not a big deal if shaft is lightly loaded.
I have 330 horsepower turning 24" props hung on 2" shafts.

I think I'll stick with the clamp on units.

I don't like even the concept of causing a "stress riser"; my butt is puckered even thinking anout it
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Old 01-28-2016, 09:25 PM   #26
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Old 01-29-2016, 08:11 AM   #27
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Prop clean out ports are common on DE boats. They use 8" fiberglass exhaust tube and it sits above prop. A bottom cut of is used as plug and the nice thing is you can do somewhat of a visual inspection as well. A sharp knife taped to stick handle does the cutting. Hamilton marine and others sells the port covers. Some go up through deck and others are accessed below deck, above waterline.
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