Reverse Rotation 351
Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: General Discussion
Forum Discription: Anything Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=4620
Printed Date: November-23-2024 at 11:32pm
Topic: Reverse Rotation 351
Posted By: SeattleFordFan
Subject: Reverse Rotation 351
Date Posted: August-25-2006 at 3:53pm
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Is there a Special reason Correct Craft put Reverse Rotation engines in the early 80's. I like the originality of it, but find it easier to build a standard rotation motor. If anyone knows why they did this, I would appreciate the input.
Thanks Travs ------------- Travs Where there is a will, there is a way, and where there is a way, it usually costs more money. 1980 Ski Nautique |
Replies:
Posted By: TRBenj
Date Posted: August-25-2006 at 4:07pm
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The consensus is that the RH prop helps offset the weight of the driver. JoeNY has a std rotation 302 installed in his 2001 and said the difference is noticeable- maybe he'll chime in.
FYI, CC was putting reverse rotation motors in their boats as early as the 60's (maybe earlier?). The didnt stop using them until PCM introduced the 1.23:1 tranny that reverses the engine rotation, allowing a std rotation motor to turn a RH prop. ------------- |
Posted By: Martinique87
Date Posted: August-25-2006 at 4:11pm
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I’ve pondered that myself. At great risk of embarra$$ing myself I'll take a stab at this one. Because of where the driver is seated the boat will lean to port. The reverse rotation causes the boat to torque to starboard. The two work to cancel each other out and provide a straighter ride. Just a guess, curious what others say.
Tim |
Posted By: Martinique87
Date Posted: August-25-2006 at 4:12pm
| Wow, simultaneous post with TRBenji |
Posted By: SeattleFordFan
Date Posted: August-25-2006 at 4:16pm
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The Counter Balance is what I had figured they had in mind. I appreciate the feedback. ------------- Travs Where there is a will, there is a way, and where there is a way, it usually costs more money. 1980 Ski Nautique |
Posted By: The Dude
Date Posted: August-25-2006 at 4:33pm
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http://www.correctcraftfan.com/forum/forum_posts.asp?TID=4293&KW=reverse+rotation - This link discusses this question. ------------- Mullet Free since 93 http://www.correctcraftfan.com/diaries/details.asp?ID=717&sort=&pagenum=1&yrstart=1991&yrend=1995 - 95 Sport |
Posted By: SeattleFordFan
Date Posted: August-25-2006 at 6:07pm
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Very helpful link, thanks Dude ------------- Travs Where there is a will, there is a way, and where there is a way, it usually costs more money. 1980 Ski Nautique |
Posted By: JoeinNY
Date Posted: August-27-2006 at 12:39am
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My boat does lean towards the driver quite noticably when I am in it alone, Havent been in one with a reverse rotation to know if it is worse than normal but I a$$ume it is... of course it could have been all those adult beverages ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: stang72
Date Posted: August-27-2006 at 9:30am
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Good link...I remember that post, I like what BKH mentions about reverse and the stern moving away from the skier during pickup. ------------- stang Face plants are not that funny when it's you face! http://www.correctcraftfan.com/diaries/images/3720/photo1.jpg" rel="nofollow - The Super Air |
Posted By: SeattleFordFan
Date Posted: August-27-2006 at 12:23pm
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Thanks everyone, I really appreciate all the input. ------------- Travs Where there is a will, there is a way, and where there is a way, it usually costs more money. 1980 Ski Nautique |
Posted By: Chopper
Date Posted: August-28-2006 at 12:20am
So an 89 with a 1.23:1 Tranny will have a standard rotation (left hand) engine.? |
TRBenj wrote:Posted By: great78
Date Posted: August-28-2006 at 12:33am
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yep ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1314 - Missin' this 78SN http://www.correctcraftfan.com/diaries/details.asp?ID=1527&yrstart=1991&yrend=1995 - Lovin' this 96 |
Posted By: Chopper
Date Posted: August-28-2006 at 6:13am
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Does that also mean that all 1:1 transmissioned nautiques are either:
a: Standard rotation engine with left hand prop or b: reverse rotation engine with a right hand prop.? |
Posted By: 79nautique
Date Posted: August-28-2006 at 8:50am
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1:1's are reverse rotaton engines with RH props. unless your name is Joe and have modified your boat and run left hand stuff. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: The Dude
Date Posted: August-28-2006 at 8:53am
lol ------------- Mullet Free since 93 http://www.correctcraftfan.com/diaries/details.asp?ID=717&sort=&pagenum=1&yrstart=1991&yrend=1995 - 95 Sport |
Posted By: David F
Date Posted: August-28-2006 at 9:53am
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My '77 (sold) has a standard rotation engine with 1:1 BW tranny and a LH 13x13 prop. That is the way it was when I purchased it back in '89. I have a strong suspicion that the engine is not original due to all the automotive parts installed. I left well enough alone, but the boat did roll quit abit when turning to starboard. The roll was bothersome enough that I usually turned around to the port whenever possible (and safe). Other than that, the straight ahead attitude was fine. ------------- |
Posted By: JoeinNY
Date Posted: August-28-2006 at 10:12am
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If it ain't modified... then I must not have owned it very long.
David I think you should go ahead and upgrade that strong suspicion to undeniable fact. My mustang came to me with a std rotation automotive hacked in engine and I rebuilt it in the same rotation before I stumbled on this site and learned the "correct" way. Now I have temporarily moved that engine to the ski nautique while the mustang gets a complete cosmetic overhaul, but the nautique will go back correct when I build up her very own new 351. The mustang is going to remain "incorrect" but it was too far gone for a very original restoration anyway. I figure another three years before I have them both exactly how I want them as long as I don't buy any more between now and then... ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: David F
Date Posted: August-28-2006 at 10:18am
Yeah, your right. After having a "backwards" CC for so long, it is taking a bit of getting used to the RH prop on the '93 SN. ------------- |
Posted By: 79nautique
Date Posted: August-28-2006 at 4:31pm
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you always could find a 1.23:1 powerplus trany to go with the std rot engine problem solved. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=756&sort=&pagenum=1&yrstart=1979&yrend=1979 - 79 nautique |
Posted By: David F
Date Posted: August-28-2006 at 4:48pm
Yep, but boat is gone. Spoke with the new Owner last week and he is happy with the boat. Not a bit of trouble out of the boat all summer 
I like that idea though. I bet the front motor mounts have enough adjustment to account for the down angle of the output shaft on the PCM tranny. ------------- |