lawrence4's blog View Details
Posted by lawrence4 | Jan 11, 2021 @ 11:36 PM | 2,729 Views
Shortest Maiden Flight (0 min 29 sec)

It's started so good then suddenly kiss the ground.

Don't know why suddenly pull up not respond.
Posted by lawrence4 | Jan 08, 2021 @ 03:24 AM | 3,103 Views
Chameleon 2 MilkTea Horten style flying wing (0 min 22 sec)

Airfoil same as Variante
Wingspan 930mm
Length 325mm
C.G 125mm
Weight 160g
Motor Eflite 180 2500KV
DSM2 6ch receiver
Servo EMAX ES9051 * 2
Folding Propeller Align 5030
Battery 2S 350mAh
Posted by lawrence4 | Jan 05, 2021 @ 07:34 PM | 24,286 Views
Posted by lawrence4 | Dec 26, 2020 @ 08:16 PM | 10,261 Views
Variante Horten style flying wing Build Log ( under 250 grams series ) (1 min 2 sec)

Wingspan 900mm
Length 320mm
C.G 124mm
Weight 158g
Color red, orange
Motor Eflite 180 2500KV
SPEKTRUM SPMAR6400LBL DSM2 6ch ultra micro receiver BL-ESC 3A ( peak 3.5A )
Servo EMAX ES9051 4.1g * 2
Propeller GWS EP-5030
Battery 2S 350mAh

Plan Download:

builded different from the plan:
1.Rib N0 mixed two types and add motor mount center part.
2.Wing leading edge use single 5mm*20mm*500mm balsa stick, don't make the washout jigs.
3.Servo installed in the middle of Rib N2....Continue Reading
Posted by lawrence4 | Dec 08, 2020 @ 01:57 AM | 5,063 Views
Chameleon flying wing Build Log (1 min 31 sec)

Wingspan 890mm
Semi-symmetric airfoil
Dihedral 0
length 565mm
height 140mm
weight 459g
C.G 113mm
Motor Align 400L 2500KV
Battery for motor DUALSKY 3S 550mAh, for LED DUALSKY 3S 250mAh
Receiver DSMX 6210 6ch + satellite
Servo EMAX ES08AII * 2
Folding propeller 5*3 ( + spinner Diameter 6" ) Replace to ALIGN 6*3

Slope Wing Glider Plan Download: Reading
Posted by lawrence4 | Nov 11, 2020 @ 08:04 PM | 97,761 Views
Piaf Build Log (3 min 7 sec)

Wingspan 995mm
Length 502mm
Height 50mm
C.G 40mm
Weight 227g
Material Balsa, plywood, CF tube
Covered by package tape
Color Mark Pen
Motor EMAX MT-1804 2480KV
Battery Dualsky 3S 550mAh
Receiver DSM2 2.4G 6ch
Propeller 5030

Wait for hot air gun

Plan Download from:
Posted by lawrence4 | Nov 08, 2020 @ 06:43 AM | 9,101 Views
67% 1951 Flying Wing Build Log (0 min 38 sec)

67% 1951 flying wing
Wingspan 945mm
Dihedral 0
length 380mm
height 135mm
weight 120g
C.G 112mm
motor Q1612-3000 3000KV 10.8g 5030 pull 165g 6A
ESC HOBBYWING Pentium 10A 2~4S 9g
Battery DUALSKY 2S 250mAh
receiver FD IS-4R 4ch
servo EMAX ES 9051 4.1g * 2
propeller 5*3

Experiment Cover Film Transparent Package tape

1951 flying wing plan download:

Or you can buy original design size kits from: Reading
Posted by lawrence4 | Nov 01, 2020 @ 10:17 PM | 7,333 Views
Add 3 LED lights to increase dorsal recognition.

Only white LED is flash version, 3 LED lights and 1 resistor use 3S power.
Posted by lawrence4 | Oct 26, 2020 @ 04:21 PM | 7,839 Views
Update OpenTX Firmware to 2.3.10
Update 4in1 Firmware to V1.3.1.69

OpenTX Firmware update:
Copy new firmware to TX SDCard then flash update.
Update SDCard content for 2.3.10

4in1 Firmware update:
If you don't need/want to customize the multi module firmware then you can use pre-compiled binaries available here:

To just use the firmware file selector here: .

Flashing from the Transmitter
For radios running OpenTX, there is an option to flash a precompiled firmware file to the multiprotocol module:

OpenTX: using the SD card browser

What you need:

A precompiled multiprotocol firmware file (.hex for Atmega328p or .bin for STM32)
A Flash from TX bootloader installed on an Atmega328p or STM32 multiprotocol module
A means to get the firmware file onto the transmitter's SD card
OpenTX 2.3.3 or newer
Copy the firmware file to the radio's SD card - it doesn't matter where you put it
Switch the radio on normally and use the radio SYS menu to locate the file on the SD card
Highlight the file and press the ENTER button
Choose Flash internal module or Flash external module as...Continue Reading
Posted by lawrence4 | Oct 19, 2020 @ 06:34 PM | 7,667 Views
Only replace front damage bearing low to middle speed test flight (3 min 24 sec)

Lucky found one same size of front bearing to replace, okay for low to middle speed running.
Posted by lawrence4 | Oct 19, 2020 @ 05:21 AM | 7,130 Views
Build a new home for the old motor,
White Wing Maiden Flight
White Wing Maiden Flight (1 min 24 sec)

The damaged bearing persisted until the maiden flight was completed,
lucky ;-)

wingspan 860 mm
length 530 mm
height 132
weight 220g
C.G 20mm
old motor (bearing damage)
old ESC (? spec)
New servo dualsky AS55 * 2
Old Battery DUALSKY 3S 550mAh
Old receiver DSM2 6ch
New folding propeller 6*3
Posted by lawrence4 | Oct 13, 2020 @ 01:08 AM | 3,665 Views
Maiden flight in the typhoon NANGKA outer circulation weather, lucky me.

KungFu Build Log and Maiden Flight (2 min 8 sec)

Wingspan 710mm
Length 520mm
Height 160mm
Motor A2208 2600KV
ESC EMAX Blheli 12A
Servo dualsky AS55 6g * 2
Battery 3S 550mAh
Propeller 4045~6040
Receiver DSMX 6ch
Total weight: 210g

Plan Download: Reading