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"Every pilot needs his wing" . This is the philosophy with which GRIF develops its design.
KPL means King post less, that is, wing without tower, since 1999, year when the CRS was born, the GRIF has in the drawer this type of loom, in fact the first sail of the CRS12 is a sail it deprives some holes for the superior cables and for the tower, this wing has flown and has satisfied then already us, but we have wanted to sound the market also proposing the version with cables, the clients they did their choice and the without tower it returned in the drawer waiting for the maturation of the times.
These times have now arrived, other builders have introduced wings without tower and us, you overcome the difficulties caused by the involvement in the 2002 accident, we have decided to propose this project.
The Trainer KPL as the Trainer is a wing for trike, it has been projected to be used as mean from school and to effect drawings of free flight deltaplani.
Its development has lasted around 18 months and has been effected in hold collaboration with the school of the Aeroclub of Viterbo, from its manager, Bruno Dimitri and from other pilots and instructors.

Its general performances make it a very interesting wing for a tourist use, especially if the pilot often flies with a passenger, or if he loves operating in short strips.
In this case the TRAINER is the ideal wing because the pilot can buy the same ultralight he used during his training, and this shorts the school time.
The TRAINER KPL, thanks to the wing' structs, can totally close on the trike, leaving open only the triangle and climbed on him wing's structs, this, combined to the small number of sticks, it makes its dismantlement particularly comfortable.s of the frame KPL is essentially tied to their put again, a trike that climbs on a wing of this type, can practically be put again in a more compact structure, occupying in height the necessary space to the refuge of an Ultralight. As our custom, in the project, the attention has also been turned to the aesthetical aspect of the wing, many gods the used components are those known and perfectly tested in over 20 years of production and that by now they countersign the style GRIF, the new ones, necessary for the new frame and the new system, its have been drawn with programs CAD, a lot of time has been devoted to the compatibility of the new details with the old ones, so that to allow possible retrofit.

Thanks to this GRIF it makes the change of the traditional frame possible turning them into KPL frame.
The frame is made with tubes of AVIONAL 2017, the sail's battens of ERGAL 7075 , all the plates and the mechanical parts are made of AVIONAL 2024 , ALLUMINIUM 3571 and STAINLESS STEEL , according to their use. All the pieces were designed for mechanical work, but even providing for aesthetical shape, the pieces of the driving triangle are an example , which join and have the same tube's wing contour.
They are made by the best workshops with numerical control machine-tools.
We use POLYANT'S products to make the sail, the leading-edge is made of TRYLAM or PENTEX , but for the extrados and double surface we use DACRON, reinforced where there are the biggest efforts. It means a longest life for our wings and some comfortable driving characteristics.
This production's organization allows us to obtain high aesthetical and mechanical quality, maintaining low cost both for wings and spare-parts .