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Whirring noise when turning at higher speed |
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Patman79 
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Joined: June-26-2012 Location: Bertram TX Status: Offline Points: 85 |
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 Topic: Whirring noise when turning at higher speedPosted: August-01-2012 at 5:24pm |
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I took the boat out this last weekend and it ran like a champ but had a whirring sound when turning at speeds above 35 or so. What could be causing this? It also made a strange noise when reversing. So closse to perfect other than that...
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Patrick
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Bri892001
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Joined: September-27-2008 Location: Boston MA Status: Offline Points: 4947 |
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Posted: August-01-2012 at 6:47pm |
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Whirring noise when reversing is common and normal. As long as it's a whirring and not a grinding or something.
The whirring at speed when turning... I know different propellers can effect this but I don't know all the details on that. |
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C-Bass
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Joined: November-18-2008 Location: Columbus, IN Status: Offline Points: 1248 |
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Posted: August-01-2012 at 7:04pm |
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Yep...sounds like a good Correct Craft to me. Our 85 does this more so when turning left, and more with the original prop. It still does it with the Acme, but doesn't seem to be as noticable.
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: August-01-2012 at 9:11pm |
Think about two things. A prop/hull cavitation while turning and the planetary gear set for reverse in the trans. If you ever get a chance, take a look at one of the trans manuals in the reference section. You will hopefully see how reversing the output shaft is done with the planetary gear set. Is this your first inboard? |
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Patman79
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Joined: June-26-2012 Location: Bertram TX Status: Offline Points: 85 |
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Posted: August-01-2012 at 10:42pm |
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No sir, just the first to make the noise.
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Patrick
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: August-01-2012 at 10:51pm |
Patrick, Fill me in on some more details. "first to make the noise" from when? Is the noise new? how long have you run the boat? When was the last time the damper was changed out? |
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Patman79
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Joined: June-26-2012 Location: Bertram TX Status: Offline Points: 85 |
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Posted: August-02-2012 at 12:29pm |
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Sorry Pete. I've only had the boat a month and a half or so and this weekend was the very first time I've had it on the water. I was waiting to put a new carb on before that. This is the first time I have been in an older Correct Craft since I was a about 8 or nine when I learned to ski behind a 69 Mustang. I think cavitation is exactly what it was. I just wanted to ask because I had never heard the noise before on my previous inboard boats. (98 Supra and 02 Mastercraft) Not sure when the damper was changed. The previous owner didn't have a whole lot of useful info on the maintenance history of the boat. Other than that the boat flat out hauls a**! I love this thing! I feel like I'm driving an old hot-rod!
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Patrick
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74Wind
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Joined: August-02-2011 Location: Georgia Status: Offline Points: 2101 |
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Posted: August-02-2012 at 9:23pm |
Three cheers for a guy who goes back in time 20ish years from a 98 Supra and 02 Mastercraft to a 79 Correct Craft! 
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1974 Southwind 18
1975 Century Mark II |
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blink
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Joined: October-08-2008 Location: United States Status: Offline Points: 111 |
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Posted: December-20-2012 at 11:53pm |
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Pat Shelly's 82 makes the same noise and I believe it is coming from the tracking fins under the the boat in the middle If the noise is coming from close to your pole that's it. I think the fins create a harmonic vibration and it resonates up thru the hull
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BTW looks like I lost my 82-2001 to sanity
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HarveyJonathan
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Joined: July-23-2012 Location: 6355 Impala Cir Status: Offline Points: 2 |
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Posted: December-21-2012 at 3:33am |
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Resonance occurred if I am right. Sometimes when the boat is not build in tightened manner, it gives such noises and vibrates as well.
----------------- movers Houston for boat transport |
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Patman79 wrote: