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  #51  
Old Yesterday, 04:03 PM
88 PS190 88 PS190 is offline
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Never seen anyone do that before, but I'd be a bit nervous that the slot is square cut and I'd probably get a fine round file and round out the slot so it won't crack.
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  #52  
Old Yesterday, 09:52 PM
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tph tph is offline
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Rudder Modification

They were probably trying to accomplish what this does:
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  #53  
Old Yesterday, 11:25 PM
BigGixxerFixxer BigGixxerFixxer is offline
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They were probably trying to accomplish what this does:

What does that do?
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  #54  
Old Today, 03:08 AM
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Originally Posted by BigGixxerFixxer View Post
What does that do?
Curious


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The Tunable Rudder is designed to offer easy adjustment of steering. This
system utilizes a composite tuning foil which is located at the upper aft
corner of the rudder blade. To adjust the foil a Phillips head screwdriver will
be needed. Loosen the two machine screws located in the relief slots of the
tuning foil.

If the boat is pulling left, rotate the foil to the left and tighten screws.
If boat is pulling to right, rotate the foil to the right and tighten screws.
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  #55  
Old Today, 08:36 AM
88 PS190 88 PS190 is offline
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Often times its to get more pulling.

MC's all have "standard" rotation props and on inboards the rudders are slightly offset both to get them out of the turbulence of the prop but also so you can slide the prop shaft out clear of the rudder with out dropping the rudder. This means that a ski boat should always have some load. If you drive one with the rudder tuner turned fully to try to make the boat neutral the boat will sort of go off in whatever direction till you get to the other side of the slop in the steering then it will go off in the new direction until you get across the slop again. Very noticable if you are say going parallel with rolly chop like another boat where the boat will almost surf around and feel really loosey goosey. But on this vintage all we usually do is take a file or angle grinder to the trailing edge of the rudder. Most people don't slot, beat or bend these things.
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