Originally I only had Home Depot pink foam to work with, so I threw one together out of pink foam.
The CG ended up being pretty far back due to the weight of the foam. Fortunately I found some foam core poster board at the local dollar store, Dollar Tree. The dollar store foam was much easier to work with, so I threw another one together.
Here are the two planes side by side
The CG with the dollar store foam came out better this time and the whole plane weighs under 220g or less than .5lbs. Awesome, considering the motor is pumping out just over 100W!
Notes on the build
- You can probably tell that I used gorilla glue. I live somewhere where summer highs reach 115+. My friend had some hot glue melt in his car in May. My planes often end up sitting in my car for hours, so hot glue was out. The gorilla glue is light and relatively easy to work with.
- For the stick mount motor, I had to cut out extra foam where the motor mounts. I attached the stick to the side to allow easy access to the screw that holds the motor on.
- My goal for Attempt #2 was speed. Not my finest work, but the plane came out ok. Won't win any style or perfectly straight awards, but the thing still flies.
- I will probably add some skids, just in case I want to land on a rough surface.
I was unsatisfied with my pink foam delta, so I gutted it and threw the guts into this plane. The parts list is nearly identical.
- AX 2306N 2000kv brushless Micro Motor
- GWS EP Propeller (DD-5043 125x110mm)
- H-KING 10A Fixed Wing Brushless Speed Controller
- FlySky 2.4G 6-Channel Receiver (R6B) for CT6B 6-CH TX
- 2mm Gold Connectors 10 pairs (20pc)
- Gens ace LIPO 800mAh 20C 11.1V lipo battery pack
- Old Hitec 5.5g servo (Smaller servos would probably work)
- 20x30" foam core poster board from Dollar Tree
- Pushrod and hardware I had laying around
- 3/8" square dowel from the Homely Despot
- Gorilla glue
- Packing tape