Today with our composite toys we have many tools how to set up proper deflections on all controllable surfaces (flaps, ailerons, elevator, rudder etc.). We play with speed polars at computers with sophisticated simulation software, we cope with secret setups from top pilots etc. We play with millimeters, on elevator perhaps with tenths of millimeters.

I was just curious what’s going on for example with trailing edge of standard F3B model at launch phase. For me it was big surprise to find out that if you setup e.g. 12mm deflection, just after model release from hand you can have there only 50% of expected setup.

[continue]