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6 hours ago, O_Smiladon said:

Any other thoughts guys. or shapes i should be looking at. ?? I have a good 3-4 months on the hard to work something out.

I assume you didn't get the rudder off TM that you posted earlier?

It now looks to me like your second best option is to build an original style rudder.

The first best option imho is to set fire to the boat, calmly walk away and engage in cheaper and and less complicated recreational activities like fast cars, whoring and meth addiction...

If only I could take my own advice 😳

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It would not be that hard to build a really good rudder. Google 'naca foils for rudders' and you will get no end of info, blogs etc.

I would recommend getting some proper advice on the design though. Either from a boat designer, or a knowledgeable amature. Naca foil shapes give the correct eliptical curve etc. But you need to understand the total surface area, the size, and the proportion of rudder infront to behind the rudder shaft. You also need to match all of that to the size, type and characteristics of your boat. Either that or go and copy another Cav 26 rudder.

You'll need a proper shaft made up, with tines (spikey bits running fore and aft inside the rudder blade). Some proper bearings and a rudder tube. It would be fairly easy to cut in a new rudder tube on the hard. Henley's do a fancy plastic tube and matching bearings at a good price. I used them to refurb my old copper rudder tube. They would be able to supply and machine up a shaft also.

The building bit, you can either use PVC foam, or wood, or wood laiminates. Get the shape about right, attached to the shaft and tines, and fibreglass it all up, smooth, fair and paint. Key attributes are knowing how to work expoxy resin, patients, and an ability to know what you don't know. Oh, and time.

If you really want, you could do one in carbon fibre skin. If you did a PVC foam with carbon skin, the weight you would save at the end of the boat would help performance and reduce hobby horsing. If you really wanted to get carried away, you could do a carbon shaft, but that MAY be getting a little over spec'ed...

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I've made and reshaped several rudders and always tried to get close to the basic NACA 0012 profile. Search online, you can get find calculators that will print out profiles etc. 

For what you have it's a lot cheaper to stick with transom hung and there is nothing wrong with that. 

If the pintles etc look strongenough. I would try add a couple of inches on the front of what you have and get a bit of foil shape in it. That will take some load off the tiller, improve performance and won't cost much. 

You really need to sail it a bit after that to decide if you want to put big money into it for either a new transom hung or spade rudder. 

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Agree with BOI Guy, you could dramatically improve things with the existing rudder by doing a NACA foil shape and a little bit of area infront of the pintel line. The area infront of the pintel line gives it more balance, so the tiller is much lighter.

With something like the NACA 0012 profile, you get much better flow over the blade, so it 'holds on' much better and doesn't stall / let go when it is loaded up. It currently looks like a plank with square ends and parallel sides, is that right?

It is possible that it is the lack of foil shape that makes it 'let go', and it feels to you like it has come out of the water when the boat is heeled over. A stalled rudder would feel the same.

There are many many boats with transom hung rudders that work very well. I don't think the issue is that this one is transom hung, it is the design / details of the rudder itself. The advantage with doing a transom hung one, is you don't have to do it all on the hard. That, and it would be a fair bit quicker and cheaper.

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1 hour ago, Fish said:

The advantage with doing a transom hung one, is you don't have to do it all on the hard. That, and it would be a fair bit quicker and cheaper.

...and increases space in the cockpit

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17 hours ago, Sabre said:

I assume you didn't get the rudder off TM that you posted earlier?

It now looks to me like your second best option is to build an original style rudder.

The first best option imho is to set fire to the boat, calmly walk away and engage in cheaper and and less complicated recreational activities like fast cars, whoring and meth addiction...

If only I could take my own advice 😳

Hahaha Absolutely.. Fast cars and Whoring sound OK not sure on the Meth addiction lol might make that alcohol. 

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HI Guys,

@Fish Mate thanks so much for your advise. I really do appreciate it.  And to all you guys you are amazing with your advise. 

I am going to take the transom hung rudder off and take it home strip the paint of it and see what i have to work with. I am going to look at it this way., I am still learning my boat I am still learning to become a not so bad sailor. Bearing that in mind I am not out there to brake speed records (well not yet anyway haha) so with the rudder I have and will improve, will be my training rudder. just to take it easy slowly cruise around the gulf. During that time I will be making plans to go back to a inboard rudder. Collecting what I need and getting the dimensions of an original rudder ( and i know where on is just still in the water at the mo  about a 100 meters from where my boat is now haha ) So when that boat comes out of the water I will get all the info I can to make one for my boat. Then the following year when Soulmate comes out again that will be the the mission to install the new rudder.

So in the meantime If i am not a raving alcoholic , Sex addict , or hooked on Meth haha I am going to see what I can do with my transom hung rudder.

Ok back to work. Of to the boat show tomorrow and to Soulmate on Sunday to take all the bits and pieces out so i have a nice and clear cabin to work in. 

Will keep you all posted.

Steve

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Hi Guys,

Just thought I would give you all an update on my Rudder. 

Well Soulmates been out of the water for little bit now. this is what the rudder project is starting to evolve to.

Boat project ticking away nicely as well.

Only thing my template is 2.7 M long and my ply is 2.4 M.. You can get 3 M ply aye ? 

This is only a temp fix. I will also be going down the line of original inboard rudder. But I will be using this one till the time comes to go back to O.E

Cheers guys

Rudder2.jpg

Rudder1.jpg

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