220 Quadcopter with ZMR (250?) arms - 5" props max

thingiverse

Update: May 28th, 2017 + New part added "Top Plate V2 - Corrected": I'm finalizing this thing by adding a new frame part I personally like, which has managed to withstand severe crashes. There is an indication of the camera angle and will fit Foxeer-like cameras. With enough slots for cable management as well as a slot for any additional component. The height clearance is 24mm. + New part added "Battery Holder V3": This model can be sliced with up-to 3 perimeters for additional strength, not intercepting one another. Update: March 4th, 2017 + Added "Basic building requirements" section + Added "Other notes" section Update: March 5th, 2017 + Added new camera mount v2: This utilizes bolts with wider heads and also will keep the camera at approx. 50 degrees This is my first attempt to create a quadcopter using the 250-ZMR arms that were laying around, and the carbon arms will make it more crash resistant. It's not a pure X-frame as the distance between arms on the left and right side is longer than the horizontal distance from the front and back arms, as an attempt to increase overall agility for a more aggressive flying. Basic building requirements: 4x ZMR 250 arm, 3mm thick 4x 35mm long standoffs The frame will fit any standard sized (30mm x 30mm) PDB and FC Battery can either be mounted on top or at the bottom. The plate holder can be used as a component platform for making some extra space between the middle plate and the rest of the components for a battery strap to pass through Battery holder will fit a 4s (1550mah) battery Camera mount will fit a Foxeer 1177 Printing Settings recommendations: Middle plate: This part will prove how crash resistant the frame is, and it should be printed with at least 35% infill, 3 horizontal perimeters and 3 layers for both bottom and top. Bottom plate: Like the middle plate above this also should be printed with similar settings so the frame becomes more rigid. Plate holder: This part doesn't need to be as rigid as the above ones; I primarily use it to create a small platform between the middle plate and the components, making it easier for a battery strap to pass through. Other Notes: Regarding tolerances, all holes will tightly fit 3mm bolts. For both the bottom and top plates, I use plastic washers, 8mm in diameter and 1mm of thickness In the case of the battery being mounted at the bottom, there shouldn't be any bolts coming in direct contact with the battery for no reason. Bear in mind that since this is a work in progress, any suggestions are very welcome. Have fun and happy flying!