Scorpion 2.3m Cross Tail
Product Code: SCORPION
Description
Scorpion 2.3m Cross Tail
The latest version of the Scorpion has a removable cross tail, improving controllability and easing transportation. Some of the photos show the earlier V tail model.
The Scorpion is an extremely high performance lightweight electric thermal soarer, filling the gap between the smaller 2m models and the much less agile 3.2m+ models. The Scorpion flies like a thoroughbred and is used by many pilots for F3J and F5J training when time or flying space is in short supply. However, it isn't limited just to practise and sport flying. Amongst many other successes, the new Scorpion X tail won 1st place in the 28th May 2011 Slovakian F5J-Outrunner Eurotour event and 3rd place in the 2010 F5J-HeightLimiter event, competing against 3m and 4m models.
The ultra-lightweight construction, being of all molded glass and carbon, is truly ARTF with just the electric motor and RC to install. The wings are two piece for easy transport and storage; the horizontal stabiliser (tailplane) is removable for easier transport. There is a canopy hatch for easy battery changes and maintenance.
Powertrain Suggestions
The model is designed to be usable for Slovenian F5J Outrunner competitions. This class prescribes suitable small (40g - 45g) outrunner motors, and a 2S LiPo battery. See the F5J Outrunner Rules with allowed motors 2010 attached PDF file below for the full list of allowed motors. Even on the small 170W prescribed powertrains the model has a climb rate of about 9m/s (1800 ft/min). For modellers not constrained by these rules we recommend similar small outrunner motors be used, but powered by small 3S LiPo batteries. This will keep the model light, as intended and give even better climb rates. Use of heavier powertrains will probably result in tail weight being required for balance, and isn't recommended.
Hacker A20 20L, 10x6 folding prop, 3S 1Ah LiPo (10.5m/s, 2100 fpm, 26A) recommended
Hacker A20 26M, 10x5 folding prop, 3S 1Ah LiPo (9.9m/s, 1980 fpm, 25A)
Hacker B20 18L geared 4:1, 12x6 folding prop, 3S 1Ah LiPo (11.8 m/s, 2360 fpm, 24A)
Hacker B20 15L geared 4:1, 10x6 folding prop, 3S 1Ah LiPo (10.3 m/s, 2050 fpm, 23A)
KD A22-20L, 10x7 folding prop, 3S 1Ah LiPo (11.7m/s, 2340 fpm, 26A)
Turnigy C2826-1350, 9x4.5 folding prop, 3S 1Ah LiPo (8.3 m/s, 1660 fpm, 23A)
Mega 16/15/5 direct drive, 7x5 folding prop, 3S 1Ah LiPo (8.2 m/s, 1640 fpm, 29A)
For more info see this RCGroups Scorpion thread.
Holic F5J Outrunner final - mostly boring but a green Scorpion is visible from 4:40 and at the very end.
The Scorpion is an extremely high performance lightweight electric thermal soarer, filling the gap between the smaller 2m models and the much less agile 3.2m+ models. The Scorpion flies like a thoroughbred and is used by many pilots for F3J and F5J training when time or flying space is in short supply. However, it isn't limited just to practise and sport flying. Amongst many other successes, the new Scorpion X tail won 1st place in the 28th May 2011 Slovakian F5J-Outrunner Eurotour event and 3rd place in the 2010 F5J-HeightLimiter event, competing against 3m and 4m models.
The ultra-lightweight construction, being of all molded glass and carbon, is truly ARTF with just the electric motor and RC to install. The wings are two piece for easy transport and storage; the horizontal stabiliser (tailplane) is removable for easier transport. There is a canopy hatch for easy battery changes and maintenance.
Powertrain Suggestions
The model is designed to be usable for Slovenian F5J Outrunner competitions. This class prescribes suitable small (40g - 45g) outrunner motors, and a 2S LiPo battery. See the F5J Outrunner Rules with allowed motors 2010 attached PDF file below for the full list of allowed motors. Even on the small 170W prescribed powertrains the model has a climb rate of about 9m/s (1800 ft/min). For modellers not constrained by these rules we recommend similar small outrunner motors be used, but powered by small 3S LiPo batteries. This will keep the model light, as intended and give even better climb rates. Use of heavier powertrains will probably result in tail weight being required for balance, and isn't recommended.
Hacker A20 20L, 10x6 folding prop, 3S 1Ah LiPo (10.5m/s, 2100 fpm, 26A) recommended
Hacker A20 26M, 10x5 folding prop, 3S 1Ah LiPo (9.9m/s, 1980 fpm, 25A)
Hacker B20 18L geared 4:1, 12x6 folding prop, 3S 1Ah LiPo (11.8 m/s, 2360 fpm, 24A)
Hacker B20 15L geared 4:1, 10x6 folding prop, 3S 1Ah LiPo (10.3 m/s, 2050 fpm, 23A)
KD A22-20L, 10x7 folding prop, 3S 1Ah LiPo (11.7m/s, 2340 fpm, 26A)
Turnigy C2826-1350, 9x4.5 folding prop, 3S 1Ah LiPo (8.3 m/s, 1660 fpm, 23A)
Mega 16/15/5 direct drive, 7x5 folding prop, 3S 1Ah LiPo (8.2 m/s, 1640 fpm, 29A)
For more info see this RCGroups Scorpion thread.
| Scorpion Specification | ||
| Wing span | 2.32m | 91 in |
| Wing area | 32.6 dm2 | 505 sq in |
| Length | 1.08m | 42.5 in |
| Flying weight from | 680g | 24.0 oz |
| Wing loading | 20.9 g/dm2 | 6.8 oz/sq ft |
| Aspect ratio | 16.5 | |
| Tail airfoil | HT14-HT15 | |
| EDA | 5.5 degrees | |
| Spinner diameter | 36mm | |
| Centre of Gravity | 78mm from wing leading edge | |
| Controls | Ailerons, flaps, elevator, rudder | |
| Scorpion Typical Weights | ||
| Fuselage & tail | 106g | 3.7 oz |
| Wing | 274g | 9.7 oz |
| Accessories | 18g | 0.6 oz |
| Total structure | 398g | 14.0 oz |
| Recommended Servos | |
| Rudder & Elevator | Ripmax SD100, Dymond D47, MKS DS65K |
| Ailerons | Ripmax SD100, Dymond D47, MKS DS65K |
| Flaps | MKS DS65K, Ripmax SD150, Dymond D60, Hyperion DS09-SCD, Hyperion DS09-AMD |
Holic F5J Outrunner final - mostly boring but a green Scorpion is visible from 4:40 and at the very end.
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