ORIGINAL: downunder
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
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I have seen and experienced what you are citing too, Downunder. It depends upon the model. My Hail Razor was very short coupled, much more so than a normal sport model. The length of the fuselage of that model was limited in length because I only had 36" long balsa sheeting available and I didn't feel like making a scarf joint in order to lengthen the sides. That will teach me. <G>
My point is that it is easy to be surprised during those first few flights, if you haven't taken everything into consideration. Of course, that is the fun of rolling your own model designs.
A friend of mine built a Great Planes Trainer 60 (symmetrical airfoil) and mounted a piped OS 1.08 on the nose. What an astounding hotrod, without the bad takeoff habit my Hail Razor possessed. The Hail Razor was a very good flying model and possessed a 23% thick airfoil. It would snaproll, but only with power applied. Landings were very nose high, if you so desired. I wish I had a picture of it to post here.