I think I agree in general with your precis. I don't know if in-hull is necessarily the way to go. Kick up gets very difficult and partial retraction also. I also don't necessarily see that much difference in drag, especially with rudders retracted, as the slot can cause heaps and a retracted edge mounted rudder only cause resistance when plowing through a wave. The edge mounted rudders on the minibeam design are a well above the waterline when kicked up
I tend to think that a leeboard and smaller rudders at about Rare Bird distance apart are a fair compromise.
--- In harryproa@yahoogrou
>
> Hi,
>
> As I see it things seem to be pointing in one direction.
> This is how I feel it works on bigger boats like BD.
>
> Rudders closer to the mast loose steering effect. Shunting is getting more difficult.
> Rare Bird's and the old BD set up seems the minimum distance from the mast to steer well and sail
> with acceptable rudder angle. Arttu's boat shunts easily with rudders further apart(5.3m)
> The old set up didn't allow us to sheet in and sail away.
> The leeboard we tried indicates that a central(ish) leeway preventer improves steering and shunting.
> All this seems to lead to the conclusion the best solution is to have normal size rudders as far to the ends as possible with a leeboard or 'luffboard' next to the mast. Rudders have to be kick up and the front one lifted out of the water always. As they have to be near the ends I would prefer in hull rudders. I am working on those, it seems possible.
>
> regards,
> Rudolf
>
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