Wing Area:
Graupner Extra 300S
|
Wing Area: |
639 sq. in. | |
| Wing Loading: | 29.5/26.6 | |
| Motor: Hacker | B50 12XL Geared 3.7-1 | |
| Prop: APC-E | 14x10 | |
| Cells: | 20x2600nimh / 6S4P 1950 LiPoly's | |
| Amps: | 45 | |
| Ready to Fly Weight: | 131oz / 118oz | |
| Watts Per Pound: | 105 / 120 |
This is the Graupner Extra 300S built with a B50 12XL Hacker Motor geared 3.7-1, Hacker Master 30 cell 48 amp ESC, 14x10 APC-E prop, 4 Hitec HS-85BB servos, Hitec SuperSlim receiver, 550mh receiver battery, and 20 2600nimh or 6S4P-1950 ThunderPower LiPoly cell flight pack. The all up weight can in at 131 / 118oz to give me 105 / 120 watts per pound.
|
The box |
 |
|
The parts: This plane is very solid with only one damaged part, the pilot had been broken off in the already sealed cockpit. |
 |
|
The wing: This plane is very easy to assemble, glue the wing halves together install your servos and attach the push rods. |
 |
|
The belly pan: The blind nuts and wood dowels are already installed at the factory so the final step to the wing is gluing the belly pan on. |
 |
|
The tail: With all the control surfaces pre hinged, finishing the tail requires gluing the stab and fin into the pre cut slots. |
 |
|
The tail wheel: This is a neat way to attach a tail wheel to any plane without cutting into the rudder. |
 |
|
The motor: Unfortunately the cowl is pre cut for a glow motor and Hobby Lobby dose not sell a replacement. It dose allow for good cooling and lets me show off the purple power. You can see the flight pack is all the way against the firewall to get proper CG. |
 |
|
The battery fits nicely into the slot already in place so no cutting is needed. |
 |
|
I may have been unlucky in getting a heavy model but I don't think you can build this plane stock under 6 pounds. Even at over 8 pound the plane flies very well. |
 |
|
This is an 8mb video of the Extra with 20-2600nimh cells. |
 |