I have the Aresti 40 with a Rossi 53 (two stroke), APC 11x5 prop. WAY too fast for pattern (more like the older ballistic pattern planes), out of sight vertical.

In view of the comments I have read concerning elevator flutter, I joined the two elevator halves with about 5 inches of 3/8 inch hardwood dowel/expoy. I then used one elevator pushrod without the "Y" setup. The Rossi turns the APC 11x5 at 15500 rpm, I take off with mix set to 15000 rpm--many flight without flutter. I have used an APC 10x7 at about 15000 with no flutter. I was very careful to get a good epoxy joint when mounting the horizontal stab and to NOT cut into the wood of the stab when removing the center covering.

I have not sealed the hinge lines, but probably should. I did take care to get the hinge lines very tight.

Did not glass the wing center section--just fitted carefully and used 30 min. epoxy.

If I were building this model for pattern type flying I would probably use a mid size 4 stroke, the Saito 72 seems to do fine on the two or three which I have seen. You will need to install the batt. behind the wing, anyway. I built a simple tray in the fuse behind the wing trailing edge former and cut the bottom fuse covering away just behind the wing to get the batt installed, then covered over the opening.

I would suggest a coat of thinned epoxy inside the nose and a couple of pieces of triangle stock at the firewall/fuse side joints.

Hope this helps.