Viper 13"

Massive frame designed for building a long-range drone or Cinelifter that can accommodate up to 13" propellers. The frame has a large body with plenty of space for placing all necessary electronics. The arms are milled from 10mm thick and 24mm wide T300 carbon. The arms feature M3 threads for easy installation of accessories or reinforcements (not included). The drone can be equipped with motors with mounting holes of 19mm M3 and 30mm M4. There is 25mm of space in the drone body. This can be increased by replacing the standoffs with longer ones if needed. 

On the top plate, there is space for battery mounting and cutouts for lipo straps. The frame can hold two batteries side by side or one larger battery with a total width of approximately 10cm and a length of approximately 15cm. The frame can also accommodate narrow long batteries with a width of approximately 6cm and a length of approximately 27cm.

In the front, there are carbon side plates for mounting a camera of Micro size. Alternatively, the camera can be mounted in a 3D printed holder attached to the front standoffs (not included). 

Behind the camera, there is space for mounting electronics with hole spacings of 20x20mm and 25.5x25.5mm (M2) and 30.5x30.5mm (M3) - typically AI boxes of some FPV cameras. There are also two M3 threads with a spacing of 62mm suitable for easy payload attachment. Behind the stack area, there is a cutout for placing a buzzer.

On the top side, there is a cutout for mounting the USB-C connector and two more M3 threads with a spacing of 37mm.

In the middle section, there is space for the main stack with the flight controller and optional 4-in-1 regulators. The frame only accommodates stacks with hole spacings of 30.5x30.5mm. On the bottom side, there are again M3 threads for easy attachment of payloads and 3D printed accessories.

In the rear section of the drone, there is space for placing video transmitters with hole spacings of 20x20mm and 25.5x25.5mm (M2) and 30.5x30.5mm (M3) and two M3 threads with a spacing of 62mm. On the top side, there are mounting holes of 20x20mm (M2) for attaching the video transmitter to the top plate. For power supply, there are holes prepared for two XT60EW-M connectors. The frame also includes a 3D print for mounting an XT90 connector, SMA antenna, and RC antenna.