Please take with a grain of salt the comments from folks saying "alot of arfs" have flutter. Arfs vary in design, and vary in the amount of knowledge the assembler has, the servos installed, etc.

I've built 11 arfs so far, including the DP Extra (supposedly infamous for flutter) and I have yet to experience flutter in my airplanes...Many reasons might exist for that, but there are many other folks who never experience flutter...


To the issue:

The z-bends I was initially referring to was the possibility that you used a z-bend to connect the pushrod to the horn....But it looks like you used clevis's.

As for z-bends in the middle of a wire, you get more support from servos if bends are less than a 90 dagree angle....Thus, if you need two angles to do something linearly, consider two 45 degree angles instead...thus a gentle slope rather than two harsh angles...

Fix the clevis/horn problem...Make them fit correctly...you don't want the surface moving unless the servo pushes it or pulls it...

Can't recall if you said you sealed the gaps on this plane....

Is the plane overpowered?

Cheers!