Balanced transom hung rudder

[Sayla]

I don't know of examples of a transom hung balanced rudder - i.e. 17% of emersed rudder forward of the gudgeon/pintel axis, below the counter stern of the hull - For a 25' traditional sailboat I'm considering whether I can balance a rudder, aft of a outboard in a well, which is aft of the end of the keel - I'm looking for comment on this..... what are the 'againsts'

Here's a stylised sketch - thanks


http://users.tpg.com.au/landsend/B-81-B.BMP

[bucheron]

I have discussed this arrangement at

http://ianprl.wikispaces.com/Cruising_Rudder

I have done this successfully with a couple of trailer-sailers 20 or so feet in length.

I would rake the leading edge of yours the other way, so it tends to push floating lines down, rather than scooping them up, to be caught by the rudder.

You have to give some thought to how the pintles and gudgeons go together, because the lower part of the blade stops the rudder from lifting above its working position.

[Woxbox]

I made one much like that for a 25-foot boat and it worked fine. I was replacing a longer one, so I put an endplate on the short one. The helm was a bit lighter but just as responsive with the short balanced rudder.

[Thorne]

http://www.luckhardt.com/elk32.jpg

[Hwyl]

I have discussed this arrangement at

http://ianprl.wikispaces.com/Cruising_Rudder

I have done this successfully with a couple of trailer-sailers 20 or so feet in length.

I would rake the leading edge of yours the other way, so it tends to push floating lines down, rather than scooping them up, to be caught by the rudder.

You have to give some thought to how the pintles and gudgeons go together, because the lower part of the blade stops the rudder from lifting above its working position.

Great idea Ian,

I also understand you pun/signature sailor

[andrewe]

If you go to www.dixdesign.com (http://www.dixdesign.com) and lookat his Cape Cutter or Cape Henry, you will see exactly what you have drawn. Including a skeg extension to avoid pot lines.
A