I just maidend an MKII Viper this past weekend, my RTF dry weight came in right @ 28lbs using a fully bypassed AMT Pegasus SP. I was a bit nervous of a high wing loading.

I made a stainless c/g hangar that fit on wing spars and sandwich in between wing and fuse and hung it up on recomended c/g point all inclusive and UAT full. My c/g was made to be spot on and lateral balance too.

This thing flies awesome. elevator I use is the 5/8" up/down total 1 1/4" and it lands to full 3 point stall nose wheel high plenty of elevator authority available to touchdown where full deflection is used.

Ailerons 3/4" each direction are HOT HOT, with triple rates it provides nice blend of differant manuvers.

I use 40 digits of spoilerons on JR radio for landing, 50 digits proved to have to much authority and cause a more abrupt 3 point stall.

I use 5/8" flaps for takeoff and landing pattern and it needs some down elevator trim as it balloons up. I use full flap deflection for landings and same elevator trim.

FWIW, my spoilerons are activated in landing flap flight mode set on final, and are curve mixed proportional to throttle position meaning that at 50% throttle they are set to start and go to full 40 digits at low throttle setting.

Stock fuel tanks are not enough fuel for this turbine only allowing for 7 minutes with not much full throttle use, maiden flight was at 9 minutes with mostly 1/2 throttle flying and upon taxi in the turbine shut down as UAT was sucked dry. I've since added a 32oz BVM overflow in front bay area.

I've flown over 40 gallons on a Pegasus powered Kingcat and routinely fly at our 500' club field but this Viper uses less throttle to fly landing pattern and should easily be at home on our 500' home field. I hope to burns allot of kero at this weeks Kentucky Jets.