11
❏
6. Temporarily slide the axle shown in step 7 onto the end
of the gear struts to ensure they are centered in the wheel
wells. Mark the locations of the retract mounting holes onto
the rails. Drill 3/32" [2.4mm] holes at your marks. Thread a
#4 x 5/8" [16mm] self-tapping screw into each hole and then
back it out. Apply a drop of thin CA to each hole and let the
glue harden. Install the retracts using eight #4 x 5/8" [16mm]
self-tapping screws.
❏
7. Cut three 5/32" x 1-1/4" [4mm x 32mm] bolt-on wheel
axle to 1" [25mm] long (the third one will be used for the nose
gear in a later section). Grind a fl at spot at the end of each
axle using a fl at spot or rotary tool.
❏
8. Slide a wheel onto each axle and secure them with
a 5/32" [4mm] wheel collar, 6-32 x 1/4" [6mm] SHCS and
thread locking compound. A drop or two of oil on the axles
will ensure that the wheels rotate freely. Loosely thread a
6-32 x 1/4" [6mm] SHCS into each axle. Slide the axles onto
the ends of the struts and move the retracts to the locked up
position. Position the axles on the struts so that the wheels
are centered in the wheel wells. Tighten the SHCS in the axles
just tight enough to hold them in place on the struts. Move the
retracts to the down position. Rotate the axles on the struts
so the wheels point straight ahead. Thoroughly tighten the
SHCS in the axle.
