BlueSkyNick
Active member
On Jimi's recent post enquiring about the Southerly 115, birdseye pointed out that the rudder loses grip at high angles of heal. This is because it has to be shallow on a lifting keeler, ie so as not to extended deeper than the uplifted keel.
I believe that more recent Southerlys have twin rudders, but not sure if this is standard or optional.
So I have been thinking about how Jimi could retrofit an older boat - particularly as he is such an expert in rudder replacement.
Instead of some very extensive and expensive changes to fit twin rudders, how about replacing the existing one with a twin blade. ie two blades mounted , say, 9 inches apart on the same stock. This would double the amount of water that would pass over the rudder's surface, hence improving performance and manouevreability.
Maybe a little tongue in cheek, but to be serious, how well would it work?
PS Anybody know a decent patent lawyer?
I believe that more recent Southerlys have twin rudders, but not sure if this is standard or optional.
So I have been thinking about how Jimi could retrofit an older boat - particularly as he is such an expert in rudder replacement.
Instead of some very extensive and expensive changes to fit twin rudders, how about replacing the existing one with a twin blade. ie two blades mounted , say, 9 inches apart on the same stock. This would double the amount of water that would pass over the rudder's surface, hence improving performance and manouevreability.
Maybe a little tongue in cheek, but to be serious, how well would it work?
PS Anybody know a decent patent lawyer?
