Lauri Tarkkonen wrote:

In cavelamb himself writes:


Lauri Tarkkonen wrote:


There are several systems and it was very common before they came up
with the servo pendulum. If you have read Peter Förthmanns books, then
you should have noticed him explaining such things on pages 46-47 and
there are pictures of two on page 46.

I think you should take Peter's book seriously, he knows what he is
talking about. I studied this topic about 5 years before I decided on
the system and now my vife says: Why did you not buy this earlier.

- Lauri Tarkkonen


Are you refering to the auxillary rudder approach on pager 46?


There is one wit an auxiliary and one on the main rudder.


- Lauri Tarkkonen


Ok, the trim tab on an exernal main rudder seems to be about page 51.
46-47 are trim tab on aux rudder,
At least that's what I'm seeing here...

I'm not quite sure how the H vane design works, though.
Must be a "turn the corner" joint hidden at the bottom?

Richard