After much thought and consideration, I pulled the trigger on a Gaui NX7. I have been wanting to get into a large Nitro for a while, and I just couldn`t resist the call any longer.
I picked up my kit from Empire Hobby, who got it packaged up and shipped in record time. I got the kit on a Monday, and started the build on the following Wednesday. In typical Gaui form, the fit and finish of the parts are outstanding. There are a few things on the NX7 that are really cool, and I`ll get into those a little later. Even the box that the kit is packed in is nice.
The NX7 is a pretty fast build for a helicopter of this size, but I took my time and spread the build out over a few days to make sure I had everything just right. Out of the box, the frame sides felt like they are were pre-sanded, because there were no sharp edges on them at all. Which I really liked, because I hate sanding carbon fiber. The first part of the build was much like the X7, in that the bearing blacks, tail boom clamps and torque tube support bearings, and some of the frame spacers are installed.
The first thing that I really like about the NX7, is the way the fuel tank is mounted in the frames. Unlike typical nitro tank mounting which use rubber edge molding to wedge the tank into place, the NX7 uses carbon fiber cross braces. These cross braces have three 5mm, equally spaced grommets which fit into indents on the sides of the tank. When installed, they suspend the tank in the mounting area...well away from contact with the frames.
But Gaqui did not stop there...
Not only is the tank suspended away from the frames, it is also perfectly centered under the main shaft of the helicopter. What that means is the CG of the helicopter remains unchanged throughout the entire flight.
Next up, is the frame reinforcement plate. It is beautifully finished in red anodizing, and serves as a reinforcement for the frames, and as a guard for the clutch bell. A very well thought out design in my opinion.
The engine mount....
I really do like the way the engine mount is designed on this helicopter. The engine is mounted into a cage like mount and then the whole assembly is slipped into place and bolted in. This design allows the engine, with the pipe still attached, to be removed by removing just a few screws.
The rest of the build was pretty much like the X7, so I decided to skip over that rather than repeat what was written in the X7 build thread.
One more thing that I feel is worth a mention is the flying weight of the NX7. Mine weighs in at 11 pounds with the receiver pack and a full tank of fuel. Which I think is pretty light for a 700 size helicopter as massive as the NX7. The fuel tank, BTW holds 660cc (22oz) of fuel.
Here is a list my personal component choices for this build:
Cyclic Servos: BK DS7001HV
Tail Servo: BK DS7005HV
Throttle Servo: BK DS7001HV
FBL Controller: Bavarian Demon 3X
Governor: Align G600 with back plate sensor
BEC: Gryphon 45V 15A Hyper BEC with flag pin switch
Backup Power: Scorpion Backup Guard
Onboard Glow Igniter: SwitchGlo Pro
Receiver: Futaba R7008SB HV Telemetry Receiver
Receiver Pack: Turnigy Nanotech 1800mAh 4s
Main Rotor Blades: Zeal Energy 710mm
Tail Blades: Zeal 105mm CF
Engine: OS 91HZ for now. It will be replaced by a YS96 Tareq as soon as the matching pipe is released.
Pipe: Hatori 90FS-3D
Fuel: VP Powermaster 30% Helicopter Fuel.
Thank you all for taking the time to visit my website and for reading my blogs. I wish each and everyone of you safe and happy flying. Have a wonderful day . :)