The 250 size FPV quads are getting more and more popular, and with good reasons. They are very handy in size, and quite capable. So of course I had to build myself one. There are many finished frames to choose from, some pricey and some not. But I went with the solution that gives most bang for the bucks imo. The 3 layer carbon frame from HK in combination with wooden arms.
- 2x Wooden sticks 10x10mm 270mm length (yes it isn’t actually a 250mm quad)
- 3x Carbon Fiber Main Frame Base Plate HK-550GT
- 4x Sunnysky 2204-2300kv
- 4x Afro ESC 20A Slim
- 2x Direct Drive HQ Prop – 6×3
- 2x Direct Drive HQ Prop – 6x3R
I think that summons up the main parts, of course there are stuff thats not listed like screws, nylon standoffs etc etc. The reason I made the feet 270mm are because of the props reaching the frame if I made em 250mm. Mostly because I mounted the motors using the cross, this way I loose around 1 cm. If I had used aluminium arms I could have use M3 screws from inside the arms.
Since a regular power distribution board couldn’t fit I had to come up with some alternative. The solution was a piece of copper sheet, which I cut two thin strips from. Should hande my amperes nicely:
Well, after soldering on a JST and a XT60 connector I closed up my plates for now, I don’t think I need to open them up again, I can access most stuff from between the plates.