"Bruce, today I made the first two flights on my modified Vortex. Thought I would send a couple of pics in case you might be interested in how one of the many mods of your kit looked. I was really lucky that the kit assembled very straight. No twist or out of true in the wing at all. I only needed three clicks up trim after take off to fly hands off. During construction I moved some things aft, used hardwood and epoxy aft of the cg in some places(because I knew it would need some weight aft) which resulted in a 21 1/2" CG with no added weight. I presently have one of the Delta Fighter 90 ARFs and didn't like the accessibility associated with the single panel underneath. I built three access panels on top. These hatches have hardwood frames and sub spars that run from W-2(L) to W-2(R). One hatch is for the tank, second for the servos, and the third magnetically held hatch covers the air receptacle and charging jack/elec switch. Under the mount for the air receptacle and elec switch is the receiver and air tank."
"I built one of your Vortex planes this summer. Mine was built with retract gear so the tank went behind the standard tank location. The short of a long story is that two successive OS 91 FXs, one with Cline fuel pressure regulating system did not perform well. Fuel delivery problems. I recently bought and installed a new YS 61 two-stroke pumped engine and installed a new JR 2.4Ghz system. The new combo is flying well. And even though I wasn't successful with the OS91, the YS61 pumped engine does just as well. Good flyer."
