I have a GP Super Sportser 40 ARF..and It's just great!

I have a YS 45 2-stroke in her and she really likes SPEED!

I learned on my first flight that the Langing gear was the weak point on the plane...

First langing put 1 wheel pant through the bottom of the wing!

I fixed that by putting a conventional gear mounted to the Fuse....

MUCH STRONGER!

Anyway.....

I still have the CG in the start off posistion as well as the control throws....

I'm ready to change to put them where they need to go to make the plane fly they way it was intended....

Rolls are very slow right now..and I would assume to adjust for as much throw as they can handle...

But the elevator and rudder I'm not sure on....

Also..the CG........

Thats my biggest problem....

WHere to put it for SPEED and gracefull maneuvers with good recovery?

I'm going to play with the girl this week...since the weather has not let me go fly... I'm at the workbench.

How far back from the leading edge should I go..???

Larry

I believe if you want speed (tho the engine will be the limiting factor) you would want to move the CG forward. Should make it less responsive but more stable. Landing speeds will certainly increase. Moving it back will make it more responsive but twitchy.
You might experiment with different props also.

I would think a foward cg would require more "UP" elevator trim to maintain straight and level.

Anytime the control surfaces break into the airflow over or under the stab, it induces drag...drag slows airspeed.

Flying Cessna 172's we always slid our seats to the rearward position and re-trim in order to gain a little more speed.

I'd rather try a location that someone has used with success....If I go at this blind...I'm going to get into trouble....

Just a fact...Murphy LOVES ME!

Larry

So, I could be wrong. I do know that nose heavy planes come in for a landing hotter than tail heavy ones. In my experience anyway.
My prop comment is still valid tho.

I just sold my Super Sportster .40 ARF last week after having about 50 flights on it. The Plane was an absolute ball to fly. Very Fast, and yet super stable even at slow speeds. I always had mine just a tad heavy to the nose, and inflight handling, and landings were a breeze. I ran a Tower .46 Pro engine with an APC 11x5 Prop. With a 10x6 Prop it was just a tad to fast for my liking, and the landings were a little on the hot side. Once I went with the 11x5APC it slowed the Plane down just a bit, but it really made a big difference on landing speed. I could bring it in slower than alot of Trainers. The Tower Engine on it was always cranky and a bear to keep in tune, but when it was running good, it would really make the Sportster get with the program. When it wasn't running good, and I would have to make a deadstick landing, I was suprised at how well I could glide the Sportster in for a nice clean landing under no power. Definately a Super Plane, and I will probally have another one in the hangar someday.