These almost ready to fly Purito ARTF models save hundreds of hours of laborious construction and are a godsend to all those who want to fly top level competitive F3L and F5L contests but do not have the time and patience necessary to build one from a kit. These wonderful models are available in glider (F3L) and electric (F5L) versions.
The Purito is probably the best regarded and best performing 2m RES model currently available. Although the design is a few years old now none of the more recent contenders (e.g. the Encanto, the Vinceres or the Eli) have been shown to perform any better in contests worldwide.
These models have been built and covered with Oralight to the highest standards by a professional builder. It is very hard for an amateur builder to achieve this quality.
Some of the models have our Compression Contact Wing Connectors ready installed on the wing underside and the fuselage so the spoiler servos' electrical connection is made automatically when assembling the wing onto the fuselage. Use good quality 2.5cm (1") wide clear sticky tape to hinge the control surfaces.
The Purito is a direct descendant of the Pures and the Slight the Schweiger family concern have optimised the design as far as possible with current (2020) CNC technology. The main design change is to a lower aspect ratio wing to increase the Reynolds Number and give better overall performance and particularly nice handling. Despite the larger wing the weight has been kept the same, resulting in a lower wing loading and excellent performance in weak conditions.
The Purito flies like a homesick angel and despite its light weight the model has a surprisingly good speed range. As Greg wrote in the RCGroups thread "The big wing bestows a good launch, even when the wind is light; the airplane itself has little drag, so displays very good legs; handling is easy, allowing the pilot to concentrate on thermalling; and finally, the spoilers really make spot landings quite easy."
The amazing wing is the major improvement of this design. The main spar is a substantial carbon tube which gives the structure excellent rigidity. A multitude of ribs are threaded over this tube to give the airfoil shape. This is even better maintained over the critical front portion by utilising two sub-ribs between each full rib, almost eliminating covering sag, and reducing drag appreciably. Becuse the tubular spar is inset below the covering surface there isn't a discontinuity at the spar line which is great feature - this usually trips the boundary layer and causes extra drag.
The kit is beatifully made up with excellently CNC cut balsa and ply parts. The wing is built over/in a 3D jig which ensures all the ribs are perfectly placed and aligned. This can be seen in the clear photos in the English build manual. In addition to the manual, full size plans are povided for the tail surfaces. Also see the RCGroups Purito thread for detailed build info. Also use Google Translate on this very useful RC-Network.de Purito thread. Before building please checkout this link to the latest manuals and translations.
See the Purito and Purito Electric product pages for more info and photos of the kit.
** All motors apart from the geared Hacker will need a little force applied between the fuselage sides (to widen them) when installing the motor. If you are not confident please select the Hacker A10-7L option.
Purito ARTF Electric Typical Weights
Wing centre panel
102 g
3.6 oz
Wing tip panels
109 g
3.8 oz
Fuselage
94 g
3.3 oz
Fin
7 g
0.2 oz
Tailplane
11 g
0.4 oz
Accessories
10 g
0.4 oz
Total structure
333 g
11.7 oz
Receiver
6 g
0.2 oz
Rudder servo
5 g
0.2 oz
Elevator servo
5 g
0.2 oz
Spoiler servos
10 g
0.4 oz
Motor
40 g
1.4 oz
Prop & spinner
17 g
0.6 oz
ESC
7 g
0.2 oz
Battery
40 g
1.4 oz
Flying weight
463 g
16.3 oz
The above weights are for the electric version. The glider version will be a bit lighter due to its longer fuselage and thus longer nose moment.
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