Shaft strut question...
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Category: General Correct Craft Discussion
Forum Name: Common Questions
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URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=48894
Printed Date: April-27-2024 at 6:36am
Topic: Shaft strut question...
Posted By: ultrarunner
Subject: Shaft strut question...
Date Posted: June-20-2020 at 8:27pm
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Ok, so, I took a couple small bends to the prop tip today. Nothing not easily fixed when I got home. However, while I had the prop off I poked around a bit and this just doesn't look kosher... Time for a strut bearing? Can this wait till end of season? As for the prop, I'll send it out to have reconditioned and get a spare also. It's an ACME 422 12.5 x 15.5 4 blade. For general all-around skiing for adults and kids, and in the course from time to time, is this prop a good setup for my 196? Thanks, Mark Starboard side of strut looking forward.  Port side of strut looking forward.  Starboard side of strut looking aft.  Underside of strut looking forward. 
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Replies:
Posted By: Jonny Quest
Date Posted: June-20-2020 at 9:01pm
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It looks to me like you may have a bent strut and a drive-shaft alignment problem. To quote Pete: "shaft alignment starts at the strut". The drive-shaft should sit nice and centered inside the strut with good concentricity. Yours looks to be more than just a little off. If you have a dial indicator, you can also check the drive-shaft to verify straightness or if it's bent. Either way, it looks like you have some work to do... JQ [Class, the word for today is "concentricity". It means circles having a common center] ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: 8122pbrainard
Date Posted: June-20-2020 at 9:09pm
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Mark, It looks like there's already a score mark on the shaft (seen in the first picture) so I don't feel there's much time left before you'll need to attend to the cutlass. Also, it sure looks like there's a alignment problem with the strut. I see the shaft is running low at the aft and high forward. This also would cause premature cutlass wear. How's the shaft in the log and through the hole in the hull? ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: ultrarunner
Date Posted: June-20-2020 at 9:46pm
Thanks for the input so far gang. Here are a few more pics. I'll open up the log tomorrow and look around. The shaft does turn freely by hand, and doesn't show any signs being bent from a visual. I'll see if I can scare up a dial indicator. Strut appears normal, and my gut tells me it's never been off the boat from my visual inspection. The scoring doesn't really feel like scoring, but the color of that one-inch portion of the shaft is obvious. But you certainly wouldn't have scoring that far aft on a shaft that doesn't move fore and aft....hmmmm....    
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8122pbrainard wrote:Posted By: 8122pbrainard
Date Posted: June-20-2020 at 9:50pm
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Mark, The score mark isn't the light color area. It's just forward of that light area and almost looks like it's starting to create a grove in the shaft. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: ultrarunner
Date Posted: June-20-2020 at 10:00pm
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I see where you mean Peter, thanks. I'll put a tool in there and check to see if there is scoring, and it's depth. Is any amount acceptable, or would a new shaft be in order? Clearly a new cutlass is needed, along with a correct alignment. So with it all out, it makes sense to do it right with a long term solution. |
Posted By: ultrarunner
Date Posted: June-22-2020 at 2:51pm
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So, I got in there with a feeler and no scoring. Just a discoloration ring from the shaft in contact with the bearing. I'll get a pair of bearings coming and then do a proper alignment, with some help from here of course, as I've never had to pull a drive shaft in the past. Can anyone make out this shaft designation? 6T 8 is the best I can do. In looking at the bearings, I have a 1 inch shaft, is the consensus of the group to replace with the traditional 2-piece metal bearing? Thanks, Mark 
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Posted By: TRBenj
Date Posted: June-22-2020 at 3:53pm
| What’s the 710 cap for on the engine? It’s a S19 lol |
Posted By: ultrarunner
Date Posted: June-22-2020 at 5:05pm
| Oh, the ole “upside down” pic! Ha! Thanks:-) |
Posted By: ultrarunner
Date Posted: June-27-2020 at 10:56am
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All righty then... A new 422 prop on it's way. Dressed out my old one and it'll be fine as a spare. I'll do a bit more filing of a few old nicks and give it a test. If all good, I'll forgo having it 'reconditioned' based on what seems to be a mixed bag of results. I'm going to go ahead and replace the strut bearing. As TIm correctly pointed out, my strut is an S19. It accepts a 1 inch shaft. I see some different OD strut bearing measurements. Which is the correct one inch bearing that I need to order? I'll also spring for the ARE shaft. Just seems so much simpler from an install and future maintenance standpoint. What would be the correct shaft length for this 96 196? Thanks gang. Mark |
Posted By: 8122pbrainard
Date Posted: June-27-2020 at 11:01am
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Mark, It's 1&1/4" ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: ultrarunner
Date Posted: June-27-2020 at 11:40am
It's a one inch shaft. |
Posted By: 8122pbrainard
Date Posted: June-27-2020 at 11:43am
Yes, and the bore in the strut is 1&1/4". You asked:
------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: ultrarunner
Date Posted: June-27-2020 at 11:46am
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Yeah, got it. Juuuust a bit slow this am. ;-) |
Posted By: ultrarunner
Date Posted: June-27-2020 at 1:17pm
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What was the OEM prop shaft length in this boat? I'd like to have the new shaft on-hand when I take all this apart, but clearly, the proper way to measure is with the old shaft out of the boat. As of now I measure out at 50 3/4. Plus the distance I can't measure from the point where shaft enters and exits. Thanks, Mark Other measurements look good: 4 7/8" from end of shaft to aft face of prop. And 7/8" from forward face of prop to aft face of strut. |
Posted By: Jonny Quest
Date Posted: June-27-2020 at 10:31pm
Call Vince at www.skidim He will know the shaft length and get you set up with a new A.R.E. unit. JQ ------------- Current 2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
Posted By: ultrarunner
Date Posted: July-01-2020 at 3:19pm
Thanks JQ, I shot them a note asking Vince to give me a shot, since they aren't answering phones. |