RE: nitromodels 63" extra 330
Well guys I maiden my plane today and it was a great flyer. Tracks very well and the Saito 120 is a good engine for the plane. Only problem, I got a little too cocky and ended up nose diving the plane in the ground on the fifth flight. I really felt like crying because it was such a beautiful plane to fly. I would recommend the plane to anyone who likes 3d type planes. The Good News. I order a new one since most of the electrical stuff survived and the engine may have survived. I say that because the rocker arm housing hit a rock. Were also hoping the crankshaft did not get bent. If the engine is a goner, I still have the SuperTigre 90. In any case, it was probably he best flying airplane I have ever had.
Things I learned when building the plane.
1. Make sure the wooded engine mounts are reinforced.
2. Put rubber washers under the engine screws to take out some of the vibration.
3. Also, put rubber washers on the landing gear screws.
4. The pull-pull servo needs to raised up about a 1/4 inch. I used tubing to run the wires through which helped a lot.
5. Do not use the clevises they provide. They are junk and will break on you.
6. Use digital servos on the ailerons.
7. The back wheel assembly is junk. Use a better.
8. The wheels are junk get Dubro 2 1/2 Dia wheels. Work much better.
9. Secure the canopy with small screws. It will be worth it in the end.
10. Make sure you use a 6 v battery and good servos. You need all the throws you can get and will a big engine, a lot of force is placed on the surfaces.
11. CG at 127 mm seems ok. I had to put on weight on the tail because the saito was heavy. But flying, I had to use very little elevator trim.
12. Make sure you tape the insides the ailerons to avoid flutter.
13. Secure all joints with CA or epoxy. I put styrofoam all around the plane. They were the only spots that survived the crash.
14. I put the throttle servo in the front which seem to work out just fine. It added nose weight so it really depends on what engine you are putting in the plane.
15. I added a larger gas tank which meant cutting the front the canopy. That's more of a user pref.
16. I used triple rates. The plane wants to fly so use a little speed when landing.
17. The plane took off nice and straight. Very little rudder was needed.
That's about it. I look forward to doing it all over again...by the way. throw the instruction manual out. it's junk...