The light and airy architecture of the 90mm frame has been possible due to the soliditer and stiffness of the polycarbonate. Be very careful in flight with other filaments Frame in polycarbonate Ultimaker 90 mm center distance with a flight controller sp racing evo . It is fully configurable and cleanflight on all flights modes F.C. : http://www.banggood.com/fr/Eachine-32bits-F3-Brushed-Flight-Control-Board-Based-On-SP-RACING-F3-EVO-For-Micro-FPV-Frame-p-1076530.html?p=LD020411878172015024 Coreless: http://www.banggood.com/Chaoli-CL-820-8_5x20mm-2S-Coreless-Motor-for-90mm-150mm-DIY-Micro-FPV-RC-Quadcopter-Frame-p-1084265.html?p=LD020411878172015024 Protection Insulated Rubber Ring for FPV Racer: http://www.banggood.com/fr/20-PCS-3MM-5MM-6MM-8MM-10MM-Short-Circuit-Protection-Insulated-Rubber-Ring-for-FPV-Racer-p-1075031.html?p=LD020411878172015024 Recpteur: http://bit.do/DSM2-5CH-2-4Ghz-RC-Micro-Receiver-With-6-CH-PPM Camera 25mw: http://www.banggood.com/Eachine-TX01-Super-Mini-AIO-5_8G-40CH-25MW-VTX-600TVL-14-Cmos-FPV-Transmitter-p-1088374.html?p=LD020411878172015024 Camera 200mW: http://www.banggood.com/Eachine-TX02-Super-Mini-AIO-5_8G-40CH-200mW-VTX-600TVL-14-Cmos-FPV-Camera-p-1088368.htmlp=LD020411878172015024 lipo: 300mha 2S : +/- 3-4min screws: 4x M1.6 x 5mm The fixing part lipo is glued to the frame. At the time of bonding, move lipo fixing on one side as the antenna and its protection are in the passage of the propellers. The Camera 25mW and 200mW mention in the links above if its compatible with camera protection. A flat top cover larger and larger and compatible with the greatest receivers is being prepared. https://www.facebook.com/Microdure/