I've an Ultra Stick .40 with a four servo wing, elevator and rudder servo mounted aft, klett tail well asy. and a K&B .61 twister for an engine. It has great vertical, flies well in gusty wind conditions and a pure blast to fly. I put in a light weight Dave Brown engine mount, a 12 oz. tank and 3" wheels. It's an awesome flyer and rock solid on landing...in any wind conditions. We have been known to get some gusty winds here at our Pu'unana flying field...and the trade winds can be quite humbling to even experienced flyers. The Ulta Stick .40 handles the conditions very very well. If you use standard servo's and a 600 ma. to 1200 ma. nicad...even with a .61 bolted up front, the model will easily handle the weight. The model will build nose heavy...so toss out the engine mount given to you in the kit...and bolt what ever engine you use close as you can to the fire wall. This is not a trainer...it goes where you point it. With flap and spoiler (crow) action...you can land slow enough for the average sunday driver to handle. The model has no surprises, and is a sweet heart to fly. Your going to have a real blast with this model.
Soft landings always,
Bobby of Maui