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Old 10-21-2021, 11:36 AM   #1
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How Bad is This?

How bad is this and can it be fixed?

Im kinda hoping it supposed to look like this but i doubt it.
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Old 10-21-2021, 11:54 AM   #2
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How bad is this and can it be fixed?

Im kinda hoping it supposed to look like this but i doubt it.
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Old 10-21-2021, 11:57 AM   #3
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There is a curl at the bottom of the rudder.

1980 CHB PT 38
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Old 10-21-2021, 11:59 AM   #4
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That rudder is definitely bent. I'd say it's been backed into something pretty solid or was damaged during a haulout.
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Old 10-21-2021, 12:07 PM   #5
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I am sure it can be bent back.

First question is: "Do you want to do it yourself or pay someone to fix it?"

I'm currently working on replacing my rudder. A very similar style to yours.

If you have a giant adjustable wrench, you can clamp it on the curved end and gently persuade it back in increments. My biggest adjustable is just shy of 2' long and would easily do the job.

You can also have the rudder removed and hammered back using a 2lb sledge.
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Old 10-21-2021, 12:15 PM   #6
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A machine (prop) shop with a big enough press should be able to straighten that. If its' made of aluminum that might be a problem though as alum can be kinda brittle.They could cut off the bend and weld a new piece in place, or just leave it. That small bit won't affect performance too much.

I would be more concerned with damage to the linkages inboard.

Must have been a good thumpin'.
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Old 10-21-2021, 12:28 PM   #7
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Not difficult with a hydraulic press. You're basically pressing the center of the curve. The high points on the opposite side need to be elevated as you need to over press it as there will be some spring back.

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Old 10-21-2021, 12:52 PM   #8
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My biggest concern would be the rest of the rudder system; there could be internal damage to the rudder post etc.
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Old 10-21-2021, 01:42 PM   #9
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If it were mine, I would take the rudder out and check everything oout to make sure nothing else got damaged.
In the mean time I'd take that picture to a machine shop or prop shop and ask how they would straighten it out. I would want to know if they think it needs to be heated before bending. I never played around with cast bronze and would want to know that before trying.
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Old 10-21-2021, 04:56 PM   #10
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Greetings,
Mr. Cb. Make a mirror image of the bend and stick it on. Voila. A semi-fishtail rudder.
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Old 10-21-2021, 06:17 PM   #11
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Originally Posted by jleonard View Post
If it were mine, I would take the rudder out and check everything oout to make sure nothing else got damaged.
In the mean time I'd take that picture to a machine shop or prop shop and ask how they would straighten it out. I would want to know if they think it needs to be heated before bending. I never played around with cast bronze and would want to know that before trying.
Exactly my same advice.
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Old 10-21-2021, 06:42 PM   #12
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Agree with machine shop, prop shop, or even a welding shop. You don't even need a hydraulic press. A mechanical bearing press has enough guts to bend that straight.
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Old 10-21-2021, 07:39 PM   #13
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If there was no damage to anything but a bent piece of the rudder, I'd take a 6lb maul and hold it against the back side and bang it back into shape with a 3lb maul. If it breaks, so what. It's doubtful that little piece would have any effect on the steering performance. It probably doesn't even have an effect on the performance bent like it is now.
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Old 10-21-2021, 09:04 PM   #14
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I would start with a big "C" clamp and a foot of angle iron see if you can make any progress with that. I'd also try to soften it a little with a torch before applying pressure.
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Old 10-21-2021, 10:07 PM   #15
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Quote:
Originally Posted by jleonard View Post
If it were mine, I would take the rudder out and check everything out to make sure nothing else got damaged.
Exactly.


With heat you could bend it back in place. But it took a lot of force to make that bend. The bearings, seal and whatever controls the rudder could be damaged. You don't want a steering failure at an inconvenient place.
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Old 10-22-2021, 01:07 AM   #16
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If you decide to pound on it while in place, disconnect the steering linkage to avoid damaging those mechanisms.
Agree with JLeonard, I’d remove it completely to check for bent shafts or damaged bearing/bushings.
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Old 10-22-2021, 01:38 AM   #17
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First - Was it already that way when you purchased the boat?

Second - Have you cruised much at all with it that way? If so... notice any odd steering circumstance at any speed while in forward or reverse?

Third - It almost looks like the "gently contoured" bend may have been purposefully accomplished by heat and a grip device?? Therefore... was previous owner attempting to at least somewhat correct prop walk while in reverse?

Strange indeed!! And, I'd think that to hit something hard enough to create that bend unintentionally there would be other problems with the rudder shaft as well as skeg misalignment. Seems to me... only by going in reverse at high speed could the impact be hard enough and in the correct direction to do that substancial bend.

Please keep us informed - Thanks! Art
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Old 10-22-2021, 05:46 AM   #18
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You might consider , after you bend it back straight to drill a hole in it.

The hole should be large enough 3/8 or 1/2 inch to install a shackle in it.

Should you loose steering attaching lines to the rudder will be greatly simplified.
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Old 10-22-2021, 05:50 AM   #19
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I bet she turns really well to port..
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Old 10-22-2021, 06:23 AM   #20
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Having bent 2 or 3 rudder shafts ( and seen a few more done) while operating an assistance towboat in shallows, believe me when I say it's not hard to bend or curl bronze rudders, shafts or proprs. ....or even Bronze rudders that had stainless shafts.

Granted they were all in a oarticular model boat, so not all rudders would be exactly the same, but Bronze and stainless seem to bend pretty easy when involved with large masses contacting immovable (or difficult to) move objects.

Some shafts were bent back on a hydraulic press, others tossed due to the more complex bends. Eyeballing that bends ays to me heat me or break me off and braze on new material. Something good prop shops could handle.
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