After 7 months of test flying by the factory and test pilots around the world, the new plane is ready to be offered on the world market. Optimization for the requirements of the FAI rules and for the maximum aerodynamic efficiency led to a design with a very specific layout of all internal components with few possible variations. We have tested the plane in different weather conditions and found the optimum equipment for installation in the model. We developed the best strategy for employing the model in various conditions based on our experience of testing and using Sense in competitions. Depending on the region and time of year, thermal activity, and other factors there is a certain understanding of the best practices for achieving the desired results with Sense.
We do not see a reason to ever exceed the flying weight of 2100 g; this weight corresponds to wind strength well above what is allowed by the FAI rules.
For wind speeds between 7-12 m/s the recommended weight range is 1650-2100 g.
For wind speeds between 4-7 m/s the recommended weight range is 1300-1650 g.
For wind speeds between 2-4 m/s the recommended weight range is 1100-1300 g.
Sense reacts strongly to ballast and requires careful attention to using ballast for achieving good competition results. We made the structure of each Sense version with a large safety margin and any pilot can select an optimal set of models both for competition and for fun flying.
Description of versions:
• FAI limit edition (ultra-light version)
Lightened wing, skins of 39/26 g/m2 high modulus carbon fabric, lightened spar. Possible variation – D-box made of 60 g/m2 carbon primarily for surviving mid-air collisions. Lightened fuselage. Lightened tail feathers. Lightened tail pushrods. Motor PowerLine 1010 (Schambeck) or a similar weight/power direct drive Mega or other brand. Battery 650 mah 3-cell. Controller 35 Amps. No ballast tube, but ballast loading is possible via flat steel plates. Heavy ballast is not recommended, up to 100-200 g ballast is OK. During tests we loaded this version with 450-500 g of ballast in winds of about 9 m/s to see the limits of the model. We do not recommend that you do the same, but the point is that this version is sufficiently strong and in normal usage will not break from air loads. This version is optimal for early morning and evening flights, or for any days with calm winds and weak thermals when a small amount of ballast is sufficient.
• Light version
Wing skins 60 g/m2 carbon on the center panel and 39 g/m2 carbon on the tip panels. Light spar, stronger than on the ultralight version. Light fuselage. Ballast chamber pre-installed. Tail feathers with standard skins but hand selected foam cores for weight reduction. Motors – PowerLine 1015 (Schambeck), Leopard LC250-30 with Reisenauer gearbox or direct drive XPower F2919/10, Mega 16/15/5 CE
ESC Controllers – YGE 35, YGE 60. Batteries – MyLipo 900 mah 30/60C 4-cell, Tattu 650 mah 75C 4-cell. Propellers – custom made 12×6.5, 13.4×6.5. Spinner – Hyper Spinner Power 30 mm. Ballast made of 45 g weight sections. Normal ballast – 9 sections. Possible to fit 15 sections with modifications to the attachment points (this is at the structural limit of the plane). Normal application of the this version – morning, day, or evening rounds, wind up to 5 m/s. Beyond that it is more optimal to use the standard version, but it is possible to use Light version in stronger winds.
• Standard version
Wing skins 60 or 80 g/m2 carbon fabric on the center panel, 60 g/m2 carbon on the tip panels. Stronger fuselage. Standard tail feathers. Possible modifications – additional D-box layers and extra strong spar, which turns this into a Storm version. Motors- PowerLilne 1025 (Schambeck), Tenshock EDF 1515 T-13 with Reisenauer gearbox. Controller YGE 60. Batteries – MyLipo 900 mah 30/60C 4-cell. Propellers – custom made 12×6.4, 13.4×6.5. Spinner – HyperSpinner Power 30 mm. Ballast – same as in Light version; 9-15 weight sections of 45 g each (15 sections with modifications of the attachment points). This version is for strong day conditions