1. VMA-P190X 90+ Texan II, Harvard II and PC9 in all color schemes
1.1. VMA-P190X VMAR Texan II, Harvard II & PC9 90+ ARF - Assembly & Operations Manual in PDF format
1.2. VMA-P190X VMAR Texan II, Harvard II & PC9 90+ ARF - Servos for Rudder & Elevator - Why 2 each?
Question: My Texan II 90+ ARF uses two servos for the elevator and two servos for the rudder. Why do I have to use two? Can I use one high torque servo per control surface instead?

Answer: The Texan II, Harvard II and PC9 series of VMAR ARF models uses two servos for the elevator and two servos for the rudder. There are a couple of reasons for this and the logic behind the design is somewhat different for the elevator than the rudder.
 
In order to replicate the performance of this semi-scale airframe as well as the appearance we wanted to enable strong control and aerobatic capability. At the same time we do not like to force modelers into premium priced high torque servos. Standard servos are cheaper and almost all modelers have them on hand. Unfortunately, in order to drive the price down some servo makers have reduced the power of the motors to the point that torque on some standard servos is down near 30 oz-in or even less. For the big PC9 based airframe we needed torque of 55+ oz-in on the elevator and rudder and the only way to hit this mark with the weaker of the standard servos is to double them up.
 
In the case of the elevator, the two servo system is required to ensure sufficient torque using standard servos. A high torque single servo will work for the elevator in lieu of two standard servos if the single servo has torque of  at least 55+ oz-in. When trying this, test in flight before being totally confident that one servo works.
 
The dual servo rudder is a bit of overkill in some cases. Yes, a push-pull system like that used with two servos is inherently less likely to flutter or bog down under high loads when in knife edge flight. A high torque single servo will work for the rudder in lieu of two standard servos if the single servo has torque of  at least 55+ oz-in. When trying this, test in flight before being totally confident that one servo works. If you find flutter in the rudder in some conditions, go back to two servos. If you find knife edge flight is better one way than the other, you could be overloading the single servo or the control rod in the push mode. If possible use both rudder control rods with your single high torque servo to avoid the high load problems found with "push" only rod set ups. Test test test if you are departing from the two servo rudder.  
1.3. VMA-P190X VMAR Texan II, Harvard II & PC9 90+ ARF - Slot in Upper Section of Vertical Stab - What's it for?

Question: My Texan II 90+ ARF has a small slot in the upper section of the vertical stabilizer. What is this for?

Answer: The Texan II, Harvard II and PC9 series of VMAR ARF models has this slot in both 90+ size and the 45-60 size. These models are all semi-scale and we have really tried to capture all of the detailing possible. The full size versions of this aircraft have a small additional horizontal stabilizer in the upper part of the vertical stabilizer. The slot you see in your model holds a small rectangular piece of balsa that is located in the parts bag. This piece is about 1 x 1.5" and finished in white covering. If it is missing, you can cut a small piece of balsa and install into the slot. On the model this is not a functional piece, it is purely for scale like detailing.

 

1.4. VMA-P190X VMAR Texan II, Harvard II & PC9 90+ ARF - Where should the Ventral Units be Located?
Question: My Texan II 90+ ARF came with various ventral unit components that appear to for mounting to the bottom of the fuselage. What is the correct location for these units?

Answer: Please see the attached file showing the location of the Ventral Units. Please note that the ventral fins are not normally provided with the PC9 versions of this model.
 
1.5. VMA-P190X VMAR Texan II, Harvard II & PC9 90+ ARF - Wing Assembly - Bolt Together or Glue?

Question: Can the wing on the VMAR Texan II 90+ ARF (same as Harvard II 90+ and PC9 90+) be bolted together or is it only to be glued together?

Answer: The design of this wing assumes that the it is being assembled with 30 Minute Epoxy. No factory provision has been made for bolting the wing together or providing for disassembly after flight.