Tom, In my opinion (for what its worth) you and all the others who recommend the largest, metal geared digital servo on rudders and in fact all other control surfaces, all of which could possibly flutter are absolutely, 100% dead, right !!! Flutter prevention is absolutely essential on high speed machines and the best protection, apart from accurate mass balancing , is a powerful digital servo with the tightest possible holding torque, and "digitals" beat "analogue" servos hands down in this area . (A slop free linkage is taken as read .)


And that is exactly why I was so critical, in my review of the BobCat, on the original BVM tail servo specification for that machine ! Perhaps those who hassled me for raising that issue might now care to revise their opinions ! Opinions can be changed, the technical truth can't !

Regards,

David Gladwin.