© 2008 Stevens AeroModel.
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3.
The 1/8 in. lite plywood central crutch F0 (sheet 21/21) is clearly marked “TOP” locate this part and invert so
that you are looking at the underside of the part. Install two 4-40 blind nuts to holes just aft of servo pockets as
illustrated below. Secure blind nuts with medium CA glue. Do not allow glue to come into contact with internal
threads of blind nuts. The second photo below shows the F0 central crutch with blind nuts installed as viewed
from the topside.
4.
Install the 1/16 in. ply former F3 (sheet 20/21) by inserting it through the lightening hole central to the F0 central
crutch then aligning the notches in F3 with the crutch sides and gently twisting it into location. See illustration
below. Make certain that the etching on F3 faces forward and to the top-side of the crutch assembly.
5.
The 1/8 in. lite plywood parts F2 and F4 (sheet 21/21) are installed to the central crutch as illustrated below.
Make certain that the etching on these parts faces forward and to the top side of the central crutch.
