I was talking to one of the more experienced modelers at the board meeting last night about the flutter problem and he talked about the normal stuff, changing to 4-40 rods, using carbon fiber rods and putting in braces for the rods. He also talked about counterweights on the elevators.
You will still have to worry about elevator flutter.
Richard, did you try counterweights on the elevator?
When I mentioned the whole horizontal stabilizer possibly fluttering he thought pinning the stabilizer was a good idea. He also mentioned that most chinese ARF fiberglass fuse's are made with a polyester resin and that 30 min epoxy doesn't bond well with it and speculated maybe that possibly an improper bond might be the problem. Having the tube through the stabilizer would maybe hold it together but allow the whole thing to flutter. He says the polyester smells different when using a dremel on it.
Personally I wasn't aware that there were different kinds of fiberglass resin... and who has polyester resin...
Anyone have any thoughts on this theory?