LoPro 164 Mini Quad for up to 3.75" props

thingiverse

Meet v1 of the LoPro 164 mini quad for up to 3.75" props. This is my first frame design, so I'm excited to share it with you guys. The frame is a low profile design, optimizing battery position for better center of gravity. The frame has a 6mm depth and counterbored holes for bottom screws. The mid plate allows for an 850 mah 3s or 4s battery, but I should push back the XT30 plug for a little more room (note revised V2 mid plate). This design is for 1306 or 1407 motors, and the frame offers a little bit of protection for them. There are mounting holes for both flight controller sizes, so you can run an ultra low setup with arm mounted escs, or do a short stack with a 4in1 like I did. I printed the main frame with Raptor PLA at 90% triangular infill. Baked at 215 degrees for 10 minutes for max strength. It's not very light – I would need to continue tweaking infill percentage to dial in a more lightweight option. Seriously, this frame seems bombproof though. Components used in the build – * RCX 1306 3200kv * Racerstar 20A V2 4in1 * FuriousFPV Radiance * DSMX Lemon diversity * Hawkeye 200mw VTX * Eachine 1000tvl cam * Cam mount here – http://www.thingiverse.com/thing:1110726 * Nylon Alloy 910 filament for lower infill frame print UPDATE (03/28/17) – I was able to get out and rip around a larger property with the LoPro. It is quite nimble at high speed but still need to tune a bit. Print Settings Printer Brand: Wanhao Printer: Wanhao Duplicator i3 V2 Rafts: Doesn't Matter Supports: Yes Resolution: .1800 Infill: 90% triangular for max strength, try less for lower weight Notes: I am trying this frame out with the RaptorPLA stuff. It seems very solid after baking, with a tiny bit of flex. I would not recommend regular PLA for this frame design. ABS and Nylon should work well. Use supports for screw holes under the frame. Do not add support to the motor screw holes. Courtesy of Brian Smith, note the last few photos listed In the gallery. He printed with carbon fiber PETG, 4 perimeter layers at 20% triangular infill, .14 layer height. The main frame came in at 49 grams. He mentions that the CF PETG is a bit dense, so I am sure we can get the weight down a bit more with a high strength nylon print. How I Designed This Designed on Fusion 360