Mks RES Dart Electric 2m

The RES Dart Electric is a superb 2m flying wing that incorporates very advanced aerodynamics to provide astounding performance. The RES-Dart is unusually stable for a flying wing and has good thermal performance, and a wide speed range. This electric version uses a small tractor propeller to avoid the hassle of using high starts. The model impresses with its balanced flight characteristics, the enormous performance potential and the extraordinary manoeuvrability (see following video). The large 2 piece spoilers enable steep descents, allowing safe exits from thermals and accurate landings. The wing is two part and the winglets can be detachable, making for a very transportable model. Like our other F3-RES models this is a high quality build-it-yourself kit constructed from CNC and laser cut balsa and plywood.

The wing profile has been optimised to give good performance while at the same time being easy to build. The thickness of approx. 9.5% allows for a lightweight structure and provides good torsional strength. The contour of the profile is only curved in the region of the front Dbox. To the rear of this, similar to the AG35, planar facets prevent covering sag between the ribs and thus ensure an accurate section is maintained. The wing geometry and sweep have been practically tested and flown many times while optimising the model’s structure and aerodynamics. Thanks to its wing profile, low surface load and DSA winglets, the RES-Dart Electric has extremely good-natured flying characteristics, which enable practiced pilots to crank up the model into the tightest thermal turn and climb away from very low launches.

The recommended powertrain is a 28 g – 40 g outrunner with a Kv between 1100 RPM/V and 1400 RPM/V, powered by a 400 – 600 mAh 2S or 3S LiPo battery.

More info on this RCGroups thread. Also see this German build log for photos and info – use Google Translate.

Download the German manual from here. An excellent English translation is now available here. The kit does not include a plan. Although this is initially off-putting a clever build jig is included and with some observation of the manual photos the construction process becomes clear.

RES-Dart Electric Specifications
Wing span	1.9 m	76 in
Wing area	47.0 dm2	729 sq in
Flying weight from	530 g	18.7 oz
Wing loading	11.3 g/dm	3.7 oz/sq ft
Aspect ratio	7.8
Wing airfoil	Custom
Spinner Diameter	38 mm
Centre of Gravity	21 mm from wing centre trailing edge
Controls	Elevons, spoilers, throttle

RES-Dart Electric Typical Weights
Structure	360 g	12.7 oz
Receiver	7 g	0.2 oz
Elevon servos	10 g	0.4 oz
Spoiler servos	10 g	0.4 oz
Motor	38 g	1.3 oz
Prop & spinner	10 g	0.4 oz
Battery	80 g	2.8 oz
ESC	15 g	0.5 oz
Flying weight	530 g	18.7 oz

Recommended RC
Elevon servos	Blue Bird BMS-101DMG, Blue Bird BMS-101HV, Blue Bird BMS-A10H
Spoiler servos (2)	Blue Bird BMS-A10H, KST X08
Receiver	4+ channel rx to match your transmitter
Battery	Dream-Flight 300 mAh 4.8V NiMH, HyperFlight 750 mAh 4.8V NiMH, Dream-Flight 750 mAh 4.8V NiMH, 4 cell Eneloop 500-800 mAh NiMH

Electric Powertrain Recommendations
ADH300L Front Mount	3S 450mAh LiPo, 9×5 folding prop
ADH300L Front Mount	2S 450mAh LiPo, 11×6 folding prop