My Favourite model.

Two points:-

When building the wings, you'll find the wing mounting tube is very tight in the two ribs into which it's mounted. Fit this assembly together (i.e. the two inboard ribs and the tube) before attempting the fit the other ribs. You can get the structure really square by laying the edges of the two ribs on the building board. When happy with the fit, glue it together, and position it on the plan to start assembling the rest of the wing conventionally.

The roll rate is phenomenal! On the first flights, at least, reduce the aileron rate to about 40% or less, and put loads of expo on it.

It's a great plane that has no tendency to snap in a loop, so it's very predictable.

I've flown one with a Saito 72, OS 46 FX, and OS 61 FX. The OS61 gives it unlimited everything, but my favourite is the Saito.

David C.