PT-2.1
PT-2.1 by Endurance R/C
Uses the Hitec HS-646WP and the HS-5646WP servos.
DIY Requires:
x 25, 1/4" ball bearings.
x 12, 4-40 socket head screws, .35" length
x 8, washers, (for 4-40 screws)
x 2, 6-32 (socket head) screws, .35" length
x 2, ServoCity Lightweight Hub Horn
x 1, Duratrax Bearing 1/4x3/8"