Ed,

I had one several years ago---It was a fun plane but had its' quirks. The wings are very flexable in stock form. I had mine film covered until the first flight. In a high speed turn, if you pull back too hard the model has a severe tendency to "tuck". It was discovered that the flexable wings were contributing to the tuck. The fix is to glass the wings. I used 1 ounce cloth.

I would guess mine would go about 140-145 mph with an 80cc engine.

Kevin