High-Performance 7-Inch FPV Platform
A 7-inch FPV airframe built for speed and payload work, with a 294 mm Mark 4 T300/T700 carbon frame. It carries 1.5kg to 2kg, runs 25 minutes without a load and 10 to 15 minutes loaded, and holds a stable link out to 5-10 km or 6000 m altitude.
Useful payload reaches 1.5kg to 2kg, so the airframe still carries real cargo.
Control and video stay linked across a 5 to 10 km working range.
Top speed reaches 150km/h, giving fast transit between work areas.
Maximum flight altitude reaches 6000m, covering high plateau and mountain work.
The Mark 4 frame uses T300/T700 carbon fibre plates at 2.5mm top and bottom, with 5mm arms. A 294mm wheelbase and 25mm stack height let the flight controller and video transmitter sit on separate levels. The bottom plate measures 158×79mm, camera spacing 19mm and stack mounting holes M3×30.5mm.
2807 brushless motors rated 1300KV on 6S, each producing up to 2.6kg of thrust. Maximum current 46A, maximum power 1100W, no-load current 0.8A, phase resistance 59mΩ, motor weight 58g, paired with 7040 tri-blade glass-fibre nylon propellers. The complete aircraft carries 1.5-2kg of payload, flying 10-15 minutes loaded and 25 minutes unloaded, with a top speed of 150km/h and a 6000m ceiling.
The F40 flight controller uses a 36×36mm board with M3×30.5mm mounting holes and supplies regulated 9V and 5V rails to the camera and video transmitter. The 60A-6S ESC (X82311X) handles 60A continuous and 70A burst for 10 seconds, supports 3-6S packs, carries an onboard current sensor, and measures 44.5×39mm at 21.5g.
The 4.9/5.8G video transmitter runs 3W across 40 channels on the IRC protocol, with an MMCX antenna connector, measuring 54×28×13mm at 32.5g. The B19 camera delivers 1500TVL from a 1/3-inch CMOS sensor with a 2.1mm lens, 0.001Lux minimum illumination, D-WDR and 3DNR. The control link uses an ELRS 915MHz receiver on CRSF, with telemetry output below 17dBm and WIFI firmware updates.
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