Flywoo Explorer LR4 V2 4"

By wojnardavid21 on Mar 22, 2024

3  0  0

The total weight of the drone is 140 grams without the battery and 290 grams with the battery installed. Currently, the hover current is approximately 6 amps at 11.1 volts when using a 3s battery. The max current draw is 12amps under full throttle. Flight times exceed 15 minutes with a homemade 3s battery using Panasonic NCR18650GA 3450mAh 10A batteries. However, voltage sag is significant due to the low maximum current of these batteries. To improve performance, I new batteries using Molicel P28A 18650 2800mAh 35A batteries, which offer over 3 times the maximum current draw. Each of these 3s batteries weighs 150 grams. With these improvements, I achieved a flight time of over 20 minutes, with improved performance. I also changed the antenna out for an mmcx antenna. This saved 5-10 grams as an mmcx to sma adapter and an sma antenna weigh 15 grams and an mmcx antenna weighs about 5 grams.

Photos

Part List

Frame

EXPLORER LR 4'' FRAME KIT V2 HD \ ANALOG VERSION (5 builds)
Flywoo.net
$34.99

Flight Controller

SpeedyBee F405 Mini BLS 35A 20x20 Stack (8 builds)
Speedybee.com
$59.99

Motors

4 x HappyModel EX 1404 3500Kv Motor (3 builds)
Racedayquads.com
$46.00

Propellers

Gemfan Hurricane 4024 Durable Bi-Blade 4" Prop 8 Pack - Choose Your Color (13 builds)
Racedayquads.com
$3.99

FPV Camera

RunCam Robin 3
Shop.runcam.com
$14.99

FPV Transmitter

SpeedyBee TX800 (7 builds)
Speedybee.com
$33.99

Antenna

Cherry Antenna SMA (LHCP/RHCP pair) (2 builds)
Rushfpv.net
$12.88

Receiver

HappyModel 2.4GHz EP1 RX ELRS Receiver (105 builds)
Racedayquads.com
$13.49

Batteries

3 x Molicel P28A 18650 2800mAh 35A Battery (4 builds)
18650batterystore.com
$13.65

Radio

RadioMaster Pocket M2 RC Transmitter (FCC) - Choose Version and Color (2 builds)
Pyrodrone.com
$64.99

Goggles

Eachine EV800D 5.8G 40CH Diversity FPV Goggles 5 Inch 800*480 Video Headset HD DVR Build in Battery (9 builds)
Usa.banggood.com
$119.99

Battery Charger

ToolKitRC M7 AC 200W 15A 2-6S DC Smart Charger with XT60 & XT30 Plug
Racedayquads.com
$75.99

Soldering Iron

Sequre SI012 Soldering Iron - Choose Version (4 builds)
Racedayquads.com
$34.99

Tools

Metric Ball End Hex Key Set, 13 Piece
$6.99

Accessories

Panasonic 18650B 3400mAh 3.7V Flat-Top Li-Ion Manganese Battery (2 pcs)
Getfpv.com
See Site

Misc Supplies

Video Aerial Systems VAS Crosshair Xtreme 5.8GHz SMA FPV Receiver Antenna - RHCP
Racedayquads.com
$34.95

Misc Supplies

VAS Ion Pro 5.8GHz Long SMA Antenna - RHCP (3 builds)
Racedayquads.com
$19.95
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