Cees,

the single center actuated system where the elevator halves are joined (CL flap style) is an elegant solution in some cases. This of course, is for those who desire no independent trim adjustment.

The main problem I see with this system though is that with glass fuses, maintenance is basically non-existent. Because the installation of this system requires you to first pass the joined elevators through the stab opening, then link up and finally followed by the stab itself, once you lock the stab in position there is no access to the linkage. I suppose one can argue that if done properly one needs no access to the linkage but if for whatever reason you did - you would find yourself in one of those [:-] situations - if you know what I mean.

For wood fuses, it would be simple enough to build in a maintenance hatch as is done on several scale models using this system.

David.