Saturday, 12 March 2016

New Project - Skywalker FPV - UAV - Part 3 Sky Walker Assembly

Sky Walker FPV Kit Assembly
1. Motor -Turnigy D3536/5 1450KV Brushless Outrunner Motor - US$ 15.99

Battery: 2~4 Cell /7.4~14.8V
RPM: 1450kv
Max current: 45A 
No load current: 3.5A
Max power: 655W
Internal resistance: 0.023 ohm
Weight: 102g (including connectors)Diameter of shaft: 5mm
Dimensions: 35x36m
Prop size: 7.4V/9x6 14.8V/8x4
Max thrust: 1380g

2. ESC - Hobby King 60 Amp - US$ 16.89
Constant Current: 60A
Burst Current: 80A
Battery: 2-4S Lipoly / 5-12s NiXX
SBEC: 5.5v / 4A
Motor Type: Sensorless Brushless
Size: 70 x 32 x 17mm
Battery Wire: 14AWG
Motor Wire: 14AWG
Weight: 61g

Programming Functions:
Battery Type: Lipo /NiXX
Brake: On / Off
Voltage Protection: Low / Mid / High
Protection mode: Reduce power / Cut off power
Timing: Auto / High / Low
Startup: Fast / Normal / Soft
PWM Frequency: 8k / 16k
Helicopter mode: Off / 5sec / 15sec (Start up delay)
3. Propeller - APC Style Propeller 8x4 - US$ 1.87

4. Servo - Control Surfaces 
Turnigy digital micro servo - US$ 3.64 each
Offering great torque, speed, excellent centering and a great price! The gear train is a combination of metal, carbon and plastic gears. 
Weight: 9.0gram
Size: 23.1mmx12.0mmx24.9mm
Torque: (4.8v) - (6.0v)
Speed:  0.11sec/60deg (4.8v) - 0.09 sec/60deg (6.0v)
Voltage: 4.8-6.0v
Type: Digital Micro
Gear Train: Metal/plastic/carbon
Ball Bearing:  No
Plug: JR/Futaba
5. Pan/Tilt Servo - TG9e
 The TG9e boasts the same performance as other servo's 10x the price with a .10sec travel time and up to 1.5kg in torque and an ultra narrow dead bandwidth!
The TG9e performance is on par with the famous HXT900, however the TG9e isn't as resistant to crashes or over-loading. Please always ensure your control surfaces are bind free.
Dimension: 23x12.2x29mm
Torque: 1.5kg/cm (4.8V)
Operating speed: 0.10sec/60 degree
Operating voltage: 4.8V
Temperature range: 0-55C
Dead band-width: 7us
Lead Length: 620mm

6. Batt - Turnigy 4000mAh 4S 30C Lipo - US$ 23.63
Capacity: 4000mAh
Voltage: 4S1P / 4 Cell / 14.8v
Discharge: 20C Constant / 30C Burst
Weight: 399g (including wire, plug & shrink wrap)
Dimensions: 143x53x27mm
Balance Plug: JST-XH
Discharge Plug: 4mm Bullet-Connector

7. Bullet Connectors, Heat Shrink Tubes, Wheel Stop colliers, Servo Extn Leads and nut bolts for LG mounting.
These are the additional things required other than the items supplied with the kit.

1. Opening the box.

 2. Checking the shipment for all parts and accessories.

 3. Modifications.
  • Adding 3mm carbon fiber tube in vertical fin for additional strengthening.

 4. Attaching the canopy hold down ply strips.

 5. Cutting out access windows for APM board and other electronics.
 6. Servo for Camera pan/tilt assembly.
 7. Elevator and Rudder servo fitment and arranging the cables..

 8. Mode 2 - Adding additional 3mm carbon fiber tube in horizontal stab.

9. Mode 3 - Adding 2 more carbon fiber tubes to main fuselage in wing leading edge and trailing edge lines and one in fuselage bottom forward section to take rough landing shocks from main LG..

 10. Mode 4 - Wiring an additional servo extension cable to tail plane for future modifications.

 11. Aileron servo fitment.

12. Fix all servos,
wire additional lines for future modifications,
attach all carbon fiber tubes,
apply the decals supplied with the kit or your own decals,
apply foam safe glue provided in the kit along the full fuselage paste line and gently press the fuselage together,
leave the fuselage for glue drying. 
Use paper tape to hold the parts in place and remove after glue dried.

 13. Make the main LG from a 2 mm aluminium sheet.
The width and height can be derided by yourself.
My dimensions are 330 mm wheel track and 150 mm height.

  • Cut out bottom side fuselage as per the LG size and attach the hand made LG to that slot apply foam safe glue or epoxy glue(Araldite), allow the glue to dry.
  • Use the cut out portion to cover the bottom inside part of LG.

14. Motor Fitment.

15. Battery and APM Tray

16. Strengthening the horizontal stabilizer with 3mm carbon fiber tubes.

Next Part 4 - FPV Electronics

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