The FT Spear is Flite Test’s newest wing aircraft! The Spear is designed to carry everything you need in a reinforced, lunchbox-like compartment.
The Spear and is made from four pieces of foam board, and it can be built in less than 2.5 hours when using the speed build kit.
Before starting the build, center your two servos and build your power pod. This power pod is not swappable, but it does use an A fold similar to other FT builds.
Don’t forget to test your motor to make sure it’s moving in the correct direction.
Next, build the wing assembly. There will be four spars, two for the wing and two that will be used in the center section.
Once the wing assembly is complete, build the center section. Install the two remaining spars inside the center section. After the center section is built, attach it to the wing assembly.
Install your elevons, your centered servos, your control horns and your push rods.
Connect the rest of your electronics and adjust the rates on your receiver. After your electronics are installed and tested, build the wing tips and attach them to the wing assembly.
Build the FPV pod, and remove the foam from the nose along the score cuts. Install the FPV pod inside the newly removed portion of the nose on the center section.
Test the CG and make any necessary adjustments. Install your prop, and you’re ready for the maiden flight!
FT SPEAR SPECS
WEIGHT WITHOUT BATTERY: 1.45 lbs (658 g)
CENTER OF GRAVITY: 3 – 3.5” (76 – 89 mm) in front of firewall
CONTROL SURFACE THROWS: 16 ̊ deflection – Expo 30%
WINGSPAN: 41 inches (1041 mm)
RECOMMENDED MOTORS: 425 sized 1200 kv minimum
RECOMMENDED PROP: 9 x 4.5 CW (reverse) prop
RECOMMENDED ESC: 30 amp minimum
RECOMMENDED BATTERY: 2200 mAH 3s minimum
RECOMMENDED SERVOS: (2) 9 gram servos
PICK UP A SPEED BUILD KIT HERE!
FT SPEAR PLANS
New to the R/C hobby?
Here are some resources to help get you up to speed!
Beginner Series: WATCH HERE!
Electronics Setup: WATCH HERE!
First Flight Quick Tips: WATCH HERE!
Scratch Building without Knives: WATCH HERE!
Got glue?? Get Some Here!