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Old 12-28-2020, 08:36 PM   #1
mmm
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Question about propeller shaft size on 79 uniflite 32' sport sedan

My boat is Aprox. 1000 miles away and I need to buy two new props.
and I do not know the size of the shaft.
Would anybody happen to know this information.Boat is a 1979 Uniflite Sport Sedan with twin 350 crusaders and 71C V-drive.
10-04.000.002 Trans tag
Thank you
Mark
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Old 12-28-2020, 09:08 PM   #2
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Could be anything. Probably 1 1/4, 1 3/8 or 1 1/2. No way to tell without measuring.

Got any earlier surveys? Often shaft size is in there.
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Old 12-28-2020, 09:11 PM   #3
Arc
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Do you know the size of the props?
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Old 12-28-2020, 09:13 PM   #4
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Thanks ski

No survey I had to rebuild this vessel when I bought it.
Just forget to measure shaft.
Thanks
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Old 12-28-2020, 09:15 PM   #5
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No they are the wrong size.
That is the problem.way undersized.
Boat in water
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Old 12-28-2020, 09:18 PM   #6
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Ok, you are buying new props because the ones on the boat are undersized. But you dont know what size they are because they are underwater. I think Im missing something.
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Old 12-28-2020, 09:21 PM   #7
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Quote:
Originally Posted by Arc View Post
Ok, you are buying new props because the ones on the boat are undersized. But you dont know what size they are because they are underwater. I think Im missing something.
Yes that is correct.
The boat prop Wash's at 1400rpm 8 knots.
Supposed to run 3500-4000 rpm
30-40 knots
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Old 12-28-2020, 09:33 PM   #8
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Im all in. Last question. Assuming you find out the shaft size , what prop size are you going to buy?
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Old 12-28-2020, 09:36 PM   #9
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I'm thinking 16 x 17 medium cupped
4 blade.
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