WingWing Z84

© Mark Qvale - January, 2018

	New plane!

Introduction

I decided to try something different and having never gone down the Bixler style road, the Strix StratoSurfer seemed like a good place to start. Also, after reading much about this plane, I decided to start with a larger motor/prop combo. For flight management/control I'll be starting with an Omnibus F3Pro flight controller to keep it light and simple.

Here then is a collection of my build notes and eventually a flight review of this plane.

General Specifications

Distributor - ReadyMadeRC, USA
Aircraft - Strix Stratosurfer
Build Date - January, 2018
Update - 5 February, 2018

Airframe Type -	Top Wing FPV Specialist		All-Up Weight -	59oz (1670g) w/ 4S/7000 Li-ion Pack
Wingspan -	59 inches (1500mm)			56oz (1676g) w/ 4S/5200 Li-Poly Pack
Length -	39 inches (1000mm)		COG -	65mm - 70mm @ Wing root (Stock)
Wing Area -	2.95 ft^2 (27.4dm^2)		Wing Load w/5200mAh/4S -	19.7 oz/ft^2 (61g/dm^2)
Motor -	Cobra C2217/16-1180kv		Max Continuous Power (4S) -	360 watts (4S)
Propeller -	8x7 Aeronaut Cam Carbon Folder		Max Prop Power -	358 watts @ 2550ft ASL
Static Thrust & Prop Speed -	1245g & 88mph @ 2550ft ASL		Static Thrust/Weight -	0.75
Battery Type -	4S1P Lipo -or- 4S2P Li-ion		Battery Capacity -	5200mAh/10C or 7000mah/3C
In flight efficiency -	<135mAh/mile (<84mAh/km) Typ.		Flight Time -	80 min

Components/Flight Gear

Below is the approximate layout of installed components:

Power Set-up

For power on this build I plan to use a Cobra 2217/16-1180kv motor and a Hobbywing 40A v5 ESC with its active freewheeling and awesome 8A, super quiet BEC. Initially I started with the Sunnysky X2216-1250kv and a HobbyKing Blue Series 40A with a pair of Low ESR capacitors added.

• Motor - Cobra 2217/16-1180kv
• ESC - Hobbywing Flyfun 40A-V5
• Prop - Aeronaut Cam Carbon Folder, 8x7

For more informaion on setting up a pusher folding prop - How To - Set-Up a Pusher Style Folding Prop

• Battery - Multistar 4S/5200, 10C or a 4S/7000 Li-Ion
  
  

Prop chart for the Cobra motor set-up

Motor Mount

I have designed a 3D printed motor mount which places the motor 10mm rearward of the stock mount. This is to accommodate a standard 22xx motor and standard prop. To use a folding prop I will have to put the motor on an additional 10mm stand-offs.

Mount and 2204 motor

ESC Mount

I decided to design and print a simple mount which glues into the motor mount and bottom of the fuselage. The ESC is held down with a single wire tie and there is a foam pad between the ESC and mount deck.

ESC mount

Flight Control

For initial flight control I chose the Omnibus F3Pro from Banggood. It is an inexpensive and in my experience completely reliable FC. This is the same board I have in the larger C1 Chaser

• Omnibus F3Pro

w/iNav 1.8.1

FC Mount

To mount the FC I Glued in some 10mm stand-offs in the bottom of the fuse.

Motor, ESC and Flight Controller mounts

RC Control

For radio gear I am using my standard DragonLink V2 system. I have mounted the RX with integrated DL dipole inside the left verticle stabilizer.

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DragonLink UHF antenna

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RX mount

GPS Mount

For the GPS I used the same mount as on my C1. This is sized for a Ublox Mini M7 GPS.

• Mini Ublox M7/M8

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FPV Gear

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• VTx - RMRC 250mw, 1.3G
• FPV Camera - Foxeer Micro with 2.1 lens
• HD Camera - TBA

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Initial FPV gear

Airframe

Wings

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Fuselage

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Rear skid (with excessive glue)

Kit/Build Review

I opted for the bare bones kit because I live and fly at 2500ft or more altitude and it has been my experience that most PNP setups are underpowered and supplied with servos that could be improved, etc. With that said, all in all this is a really nice kit. The linkage components in mine are well made and sized perfectly. There are good, solid stiffeners in the control surfaces and having the channels pre-cut in the wings for servo wires is a big plus.

The plastic fuselage is also a big treat. Using plastic makes for an enormous amount of room, it is very stiff and has a nice battery tray pre-installed.

Here are some of my personal points for improvement:

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Maiden!

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Parting Shot

(That "lake" in the background is actually a solar plant!)

Project 3D Print Files

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See Also

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• Thingiverse Design Page

Some of the Vendors I used for this project

Ready Made RC

HobbyWing North America

Aloft Hobbies

Comments? Questions?

email me!