Dremel US40 Instruction Manual download pdf (Page 19)

INSTALL RETRACTS (OPTIONAL)

NOTE: Hardware for retract installation is not

included in the kit.

5. Temporarily mount your retract servo and trial

fit all retract components. Test the operation of your

retracts making sure they operate freely and reliably.

Also make sure they "lock" in both the up and down

positions.

1. Study the retract drawings on the plan, and the

installation instructions provided with your retracts, and

plan your retract installation before proceeding.

Photo shows finished wing with retract installed.

6. Blend the bottom sheeting as neatly as possible

around the retracts.

7. Use polyester resin or 30 - minute epoxy thinned

with alcohol to fuel proof the entire retract wheel well

cutout

2. Cut an opening in the bottom LE sheeting for the

retract mechanism. Cut a clearance slot in rib W-3 for the

LG wire. Cut an opening in the bottom LE sheet and in

rib W-2 for the wheel well.

3. Enclose the wheel well by running vertical grain

FUSELAGE ASSEMBLY

PREPARE FUSE SIDES

1/16" balsa between the bottom and top sheeting; or you

may make the wheel well from an appropriately-sized

styrofoam cup.

4. Cut out an opening in the center of the wing (in

front of the spars) for your retract servo, and bend and fit

a pushrod to run between the servo and the retract

mechanism. Run the pushrod just under the top LE

sheeting until it passes over the wheel well, then make

two 90-degree bends and connect it to the retract mecha-

nism.

1. Lay one of the shaped 1/8" balsa fuselage sides

in place on the fuselage plan side view. Carefully

position the fuse side so the front edge lines up with the

front ofF-1 on the plan. Tape or pin the fuse side so it

can't move. NOTE: The fuse side may be a little longer

at the rear than indicated by the plan. This is as it should

be.

Photo shows finished wing with retract servo installed.

2. Carefully position the die-cut 1/8" balsa lower

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Dremel US40 Instruction Manual Page 19