ATOMRC Thresher Shark PNP+S review: a 700 mm twin-motor fixed wing

Airframe dimensions and layout

ATOMRC publishes a 700 mm wingspan, 627 mm length and 9.5 dm² wing area. The structure is moulded from EPP foam, with carbon-fibre rods described as pre-embedded in the wings. Those are construction facts from the maker, not evidence of impact resistance or torsional stiffness under a measured load.

The Thresher uses a forward-swept main wing, conventional tail surfaces and two tractor motors. ATOMRC calls the design statically unstable and describes it as a low-to-medium-speed FPV aircraft. Those phrases state the intended flight envelope. They do not provide stall speed, cruise speed, maximum speed or a published aerodynamic test.

Both main-wing panels and the horizontal tail use what ATOMRC describes as a screw-free quick-release structure. The page also identifies separate electronics compartments, hidden cable routing, and dedicated FPV camera and video-transmitter mounting positions.

Does the 700 mm span mean it is sub-250 g?

No conclusion is possible from wingspan alone. ATOMRC publishes no bare airframe mass, PNP mass or all-up weight for either version. Motors, ESCs, servos, receiver, battery and FPV hardware all contribute to flying mass. The required AUW field therefore reads TODO: verify.

What the PNP+S package includes

The version table is unusually specific about the installed propulsion and control hardware. PNP+S includes:

• Two 2004 2400 KV brushless motors
• Two BLS 30 A 4S ESCs
• Five S06M 6 g metal-gear servos
• Two 5126-2 two-blade propellers

The basic pack also lists a pre-built kit, wood plate, screws and nuts, sticker and manual, quick-release connector and flight light. That makes this more complete than a bare airframe, but the listing does not call it ready to fly.

The page gives a broader recommended motor size of 2004 to 2006, while the version table names 2004 2400 KV motors for both sold versions. The exact PNP+S specification is the latter. Substituting a 2006 motor would create a different build and should not be represented as the reviewed store variant.

Battery guidance has a material gap

The general specification puts 2S–4S beside the recommended BLS 30 A ESC. The package table calls the included controllers BLS 30 A 4S ESCs. Those lines establish an ESC cell range and the label on the supplied controllers. They do not establish a complete flight-pack recommendation.

ATOMRC does not state pack capacity, connector, chemistry, dimensions or mass for the Thresher Shark page. It also publishes no centre-of-gravity position. Without those details, a buyer cannot derive a maker-approved battery solely from the listing. Capacity and receiver/radio requirements remain TODO: verify alongside AUW.

The missing battery mass also prevents calculation of wing loading from the published 9.5 dm² area. This review does not fill that gap with another aircraft’s pack or with a retailer’s recommendation.

PNP+S versus RTH

The airframe, twin motors, twin ESCs, five servos and two propellers are common to both rows in ATOMRC’s official table. The decisive difference is navigation hardware.

PNP+S lists no flight controller and no GPS. RTH adds an ATOMRC F405 NAVI Pro and BE220 GPS, with a note that all electronics are installed. A buyer who specifically wants the maker’s return-to-home configuration should therefore choose RTH rather than assume the PNP+S package contains dormant navigation hardware.

The reviewed USA PNP+S variant was listed in stock at $150 on the retrieval date. Warehouse and version matter: the same page carries separate China, USA and EU options, with different availability and prices in its structured product data.