Thanks for your recommendation to stick with the Stik.
 MV> ... I had one student
 MV> who was learned to fly on GB Falcon 56.  I  set it up very mildly for
 MV> the first two years of his flying.  Gradually, the  CG was moved back
 MV> and control throws were increased and today he still has  that very
 MV> same plane.  
Sorry to change the subject on you but your mention of CG 
reminded me of another problem.  With the CG at the factory 
recommended point my 2m glider needed about 20 degrees of up-
elevator trim for a straight glide.  I moved the CG about .5 inch 
aft to reduce the amount of up-trim needed and, as I think I 
recall, the glider flew straight over a range of airspeeds though 
it still needed a lot of up-elevator trim.  But I had to rebuild 
the tail section after a crash and now the glider wants to pitch 
up at higher airspeeds if trimmed for a straight glide at slow 
speed.  I'm not exactly sure what is wrong; maybe I set the 
horizontal stabilizer's angle of incidence too far negative.  
The glider is an ARF so I lack plans to specify the proper angle.  
I guess I should have measured it before I crashed!  I'm hoping 
that more aft CG will fix things but it hasn't seemed to so far.  
Right now I'm at .37 inch aft with about 5 degrees of up elevator 
trim.  Experimenting is a drawn out affair on the ridge where I 
fly the glider because the primary objective is staying aloft when 
the wind is light or coping with turbulence when it's strong.  The 
wind rarely meets the medium-steady ideal for doing CG 
experiments.  Care to recommend a good book on practical (not 
overly theoretical) aerodynamics?  
--- Blue Wave/Max v2.12
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