Section 8: Installing The Tow Hook - Hangar 9 ULTRA aspire Instruction Manual

Section 8: Installing the Tow Hook

Parts Needed
• Fuselage
• 4-40x12mm bolts
• 4-40 blind nuts
• Washers
• Tow hook
Step 1. Locate the bag containing the tow hook and hardware.
The tow hook will be mounted on the fuselage bottom with three
screws, three washers and three blind nuts.
Step 2. On the bottom of the fuselage, locate the three holes
where the tow hook will be mounted. If the covering has not
been removed from the holes, use a sharp hobby knife to cut
the covering from the holes.
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Tools and Adhesives Needed
• Phillips screwdriver
• Hobby knife
Step 3. Mount the tow hook to the fuselage using the hardware
provided. Note: The "hook" opening faces the rear of the
fuselage. Insert a washer on one of the bolts, thread the bolt into
one of the slots on the tow hook. Insert a blind nut inside the
fuselage and tighten the bolt to the blind nut. For the time being,
mount the tow hook so the bolts are centered in the slots.
Step 4. Tighten the bolts sufficiently, but be carefully not to
crush the wood inside the fuselage.
Step 5. In general, a forward hook location will provide for the
safest and most stable launch and should be used during the
first test flights. Later a more rearward location will provide
greater launch altitude, however this can cause veering
tendencies during launch.