Hi John,

Glad to hear the maiden flight was successful.

The snap mentioned here happens mainly because the two wings start to stall at different times, and that causes the roll as the snap builds.

The main cause of a wing stalling in these conditions is there is too much incidence for the given airspeed, which makes the flow break away from the wing too early, thus starting the wing stalling. This would explain the fact that a snap is encouraged by extra weight, as the wing has to fly at a greater incidence to counteract the extra weight.

However, I reckon you can completely remove any tendency to snap with the Edge by reducing the elevator throw. The model is incredibly pitch sensitive anyway, so a reduction in the elevator throw isn't going to stop you getting a pretty good loop radius without a snap beginning.

One more point, if I may. If you still are nose heavy, that'll make the approach to landing much steeper and faster, and therefore a bit more difficult to flare. My first problems with this model came from the fact that the wing is very efficient and it floats more than I expected, so I went the whole length of the runway, trying to get down, on my first landing!

Only now, after a dozen flights, have I managed to get the speed and descent right for a smooth, spot landing.

Good luck!

-David C.