ORIGINAL: Artisan
The torque of this engine raised the right front wheel off the ground so much that the model swung around in a small left turn and headed back toward the pits no matter how much right rudder I held.
My son grafted a 1.08 onto his old beaten up 40 trainer (he moved the engine back about 3" though) and it handled beautifully. Takeoffs were dead easy although he opened the throttle fairly slowly and by the time he got to about 1/3 throttle it was in the air

. Landings were just as slow and easy as with the original small engine except you had to do a 3 point or the prop would touch the ground