Designed with experienced sailplane pilots in mind, the Radian® Pro sailplane comes out of the box with ailerons and functioning flaps that let you take advantage of sailplane mixing functions like reflex, camber and crow. But you don’t have to have a programmable system to fly it. Anyone with a 5-channel sport radio can enjoy basic 4-channel control with flaps using the included Y-harness.
Like the original Radian, the Radian Pro also comes equipped with a powerful 480-size 960Kv brushless motor system that can catapult it to altitude in seconds. Its airframe is constructed from the same tough Z-Foam™ material and has been reinforced with fiberglass blades in the fuselage and wing to reduce flex. This reinforcement, along with that of the carbon fiber rod in the wing, make it possible for you to achieve a level of soaring precision with the Radian Pro that’s on par with many competition gliders.
Best of all, you can have this Plug-N-Play® version ready to fly in minutes. All you need is a 5-channel full range transmitter and receiver, a 3S 11.1V 1300mAh Li-Po battery, and a 3S Li-Po charger. To take full advantage of the capabilities of the Radian Pro, a programmable radio system with sailplane mixing functions is recommended.
- 5+ Channel Transmitter and compatible Receiver (6+ Channel radio system with programmable transmitter for advanced sailing mixing functions)
- 3S 11.1V 1300mAh 15C LiPo Battery and compatible charger
First flight was absolutely perfect. Very little trim adjustment necessary (down elev only). Very visible in clear sky. Beautiful landings even with 1/2 flaps.
I have 5 planes. This one is the smoothest and most responsive of all 5. I went to a lot of trouble to perfectly tune all the control rods and verified good CG prior to flight. I'm using a 2200 mAH battery pushed as far back as possible (worked great). Hand launched with moderate power into a light breeze and it flew amazingly well from the first moment of flight. It is very easy to see and it immediately responds to control input. Landings are very stable and controlled. It flies extremely well under power and extremely well when gliding. The motor has plenty of power to propel this plane very fast, but it also flies well slow. It is BIG so I have to remove the wings to fit it in my car--a minor inconvenience to enjoy such a nice plane.
The Radian Pro is not perfect out of the box. Take time to check everything. I found some glue joints lacking glue. I also made the mistake of powering up the motor/prop the first time without checking the propeller balance. The vibration immediately destroyed the nose of the fuselage. Made a call to the manufacturer and they shipped a new fuselage, propeller, and spinner. FREE! That is some great service!
Mine had too much decalage. I set decalage to zero per Naton's tips. The second fuselage had only 1/2 degree neg decalage so I left it alone. IMHO the aft fus/tail is much too flexible. I added some 1.2mm carbon rods embedded in the aft fuse to stiffen.
I would say this is a good plane for an advanced beginner. It seemed a little hot/fast IMHO for a new beginner. If you have a programmable radio, expo helps a lot to smooth out handling. I've only had the plane out for one session of flying but I can already tell she will be a great performer. The performance-fun factor for the price is excellent.
Purchased the Radian Pro around two months ago and it is my fourth Park Zone plane. Made the mistake of not checking the channel polarity initially in the radio setup since I was used to the Micro planes being perfect out of the box.
Three of the five channels on the Radian Pro were inverted from the standard settings for a DSM-5 transmitter where the micro planes come out of the box ready to roll so carefully check this. Control horns took a lot of tuning also.
After the crash from inverted setting I purchased a replacement body to fix the product. One of the push rods in the brand new replacement body was so tight in the sleeve it was causing the servo to slip and had to be replaced with one from the crashed plane which had 1/2 the friction.
Flew the plane 5 times. Flew great once trimmed and tracked well. Took time to figure out the best thing to use the powered mode for was to climb only.
It can handle some wind and controls much better unpowered than when under powered flight. Climb angle based on my estimate of 30 to 45 degrees before stall.
Loops easy but roll maneuvers are pretty slow using ailerons.
Glides fast on landing and flaps are very important to cut speed. It can take 1/2 to a full soccer field to land.
On the 5th flight 20 minutes into the flight on a power climb 150 to 200 feet up one of the plastic servo arms broke. End result was a 150 to 200 feet nose dive straight down with no response from the radio. Pretty much destroyed the plane.
I fly the micro Park Zone planes all the time and love them with 100s of hours on them.
The Radian Pro I bought was not built to the same quality standards. Flies well but materials of construction could be much better especially the servos and foam material. Initial setup out of the box for tuning the radio polarity and control horns could also be much better.
Not recommended at all for a beginner since it is a little fast on landing and requires a lot of tuning on the ailerons especially in wind to maintain direction.
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