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can i turn a 13x 10.5 |
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bwooton 
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Joined: June-13-2005 Location: United States Status: Offline Points: 91 |
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 Topic: can i turn a 13x 10.5Posted: June-03-2007 at 9:55pm |
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i found what looks to be a good deal on a Acme 13x10.5 on ebay and i was wondering if that was to much prop. i have a 78 tique that i have repowered with a mercruiser 350 not sure what the hp is.
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Thanks Bobby
there's no replacement for displacement |
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79nautique
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Joined: January-27-2004 Location: United States Status: Offline Points: 7872 |
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Posted: June-03-2007 at 10:05pm |
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sure you can,
might spin a couple of RPM's thou |
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81nautique
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Joined: September-03-2005 Location: Big Rock, Il Status: Offline Points: 5774 |
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Posted: June-03-2007 at 11:39pm |
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What's on the boat now?
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You can’t change the wind but you can adjust your sails
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bwooton
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Joined: June-13-2005 Location: United States Status: Offline Points: 91 |
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Posted: June-04-2007 at 5:27am |
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it has the stock 12 x 14. i put a standard rotation engine in because the po let the 305 freeze with lake water in it, now i need a standard rotation prop that i wont have to pay and arm and a leg for.
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Thanks Bobby
there's no replacement for displacement |
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Posted: June-04-2007 at 6:49am |
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Bobby, My understanding of dia. to pitch is that 1 inch larger in dia. equates to about 2 inches of increased pitch. This puts the 13x10.5 in the range equal to a 12x12.5 so you may be under proped. You will need to watch your top end rpm's. The other problem is that although the 13 inch may fit, the closness of it to the hull may reduce it's efficiency. Close to hull props have also been know to cause hull rash. It's when the gel coat is actually eroded from the water. This is a picture from another post showing the hull rash.
Are you sure that your 78 was a 12x14? My 77 Tique has a 13x13 on it. |
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2_Nautiques
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Joined: March-22-2006 Location: United States Status: Offline Points: 251 |
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Posted: June-04-2007 at 9:24am |
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My old 78 tique had a 302 and 12x14 from the factory.
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bwooton
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Joined: June-13-2005 Location: United States Status: Offline Points: 91 |
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Posted: June-04-2007 at 5:22pm |
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i am sure that it is a 12 x 13. I would run a 12 in prop if i could find one at a reasonable price. the acme 540 is a 13 in prop?
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Thanks Bobby
there's no replacement for displacement |
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bwooton
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Posted: June-04-2007 at 5:23pm |
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i am sure that it is a 12 x 14. I would run a 12 in prop if i could find one at a reasonable price. the acme 540 is a 13 in prop?
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Thanks Bobby
there's no replacement for displacement |
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81nautique
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Joined: September-03-2005 Location: Big Rock, Il Status: Offline Points: 5774 |
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Posted: June-04-2007 at 5:37pm |
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The 540 is 13x12 but ofcourse backwards for your new engine. I turn a 540 at 4900,I think you'll spill the guts out of the motor with the 13x10.5
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You can’t change the wind but you can adjust your sails
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