Pures V2 from Grüner CNC

Details

The Pures V2 F3-RES is one of the original models that drove this class to worldwide success. The Pures V2 and the Slite V2 are probably the most highly regarded models in this 2m balsa glider class.

In 2011 Josef Gergetz of SETA Modelltechnik started to manufacture high quality sailplane kits for the newly emerging 2m build up glider competition class. By the end of 2017 the demand for Pures was so high that Josef Gergetz could no longer keep up with the production. Delivery times many months and it was decided to switch the production to lasercut technology at a larger manufacturer, resulting in the Pures V2.

The Pures V2 uses a slightly modified version of the highly regarded AG24 - AG26 airfoil family by Mark Drela. To allow accurate construction of the originally very thin trailing edge the rear of the airfoil was slightly thickened. It gives high lift with comparatively little drag over a wide range of lift coefficients (Cl). Compared to the Pures V2 the Pures V2 has improved L/D, especially at higher speeds.

The wing of the Pures V2 iis built as an open rib construction over very strong wound carbon fiber tube spars. To reduce sagging of the covering film between the ribs an extra sub rib is used between each full rib. This ensures the wing profile conforms much better to Mark Drela's original airfoil than other built-up designs.

A balsa jig is supplied to ease positioning of the numerous ribs, ensuring the wing is built in an accurate and speedy manner. The laser cut structure is almost identical to the previous CNC version as there was nearly nothing to improve.

Pictures

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Similar Models

Some content in menu 2.

We cannot guarantee that the shops listed below do sell the Pures V2 in particular but at least we know they do distribute Grüner CNC.

Wingspan: 2000mm (78.7 in)
Length: 1120mm (44.1 in)

Weight: 435 g (15.3 oz)
Wing span 2.0 m 78 in
Wing area 36.0 dm2 558 sq in
Length 112 cm 44.1 in
Flying weight from 435 g 15.3 oz
Wing loading 12.1 g/dm2 4.0 oz/sq ft
Aspect ratio 11.0
Wing airfoil AG24 mod / AG26 mod
Dihedral (EDA) 12.3º
Centre of Gravity 75-78 mm from wing leading edge
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