Waterfall= outside loop within a fuselength, rotating around the trailing edge of the wing. Fast servos help, but you need servo torque, and alot of servo throw. The farther back the CG, the easier to waterfall and spin with.

I didnt beef up my firewall, but i did glue as much as i could.

I put tail wires made out of .047 wire with soldered ring connectors. I needed the tailweight anyway, might as well make it functional. I drilled and tapped thru the vertical fin, and the outer trailing edge of the stab(thru the ca hinge), and ran 1 inch pieces of 4/40 threaded rod thru. Some aluminum washers, and aluminum nuts with a drop of loctite to hold them in place. On the bottom of the fuse, I mounted the lower wires to the rear servo mount screws on my rudder servo. I put the rudder servo under the fuse to run pull-pull.
If needed, Ill do the same to the leading edge of the stab, but I dont think that would be necessary.

Dont have a soft mount, but may put some rubber washers between the firewall and mount, to give me the right thrust and some vibration damping.

I'm not running a Saito, and am using 15% nitro.

Stock wheels should suffice, even turnin a 16 inch prop, youll have plenty of clearance. If you fly off of grass, or are really weight conscious, dont install the wheelpants. They add 3-4 oz of weight.

I ran my antenna inside the fuse, and dumped it out at the rear of the fuse. I am going to do a serious range test to check for interference before going up, and will relocate it to the top if needed.


Heres a pic of the tail. Notice the rudder servo, pull pulls, large arms, sealed hingelines, sullivan tailwheel, and the tail wires.