Basic build for the Arrow.
Get the 2 glass tubes started into the holes in the motor mount. It's a tight fit. If needed
make the opening a bit larger with a exacto knife. After you have them started slide on the
2 wing hold down and the two tail mounts, then put the motor mount on the ground and
use a hammer to drive them all the way into the mount. Try to keep the rod your pounding
on straight and it will go easier. Ok! The fuselage is almost done! Glue the two tail
mounts into position with Goop adhesive, Zap a dap a goo or equivalent. You want one to
be at the end of the rods. The second one should be just far enough ahead so your
elevator servo will fit between them as in the picture below. The prototype in the picture
has tail mounts that were a little short. You'll notice in your kit that the tail mounts is
longer on one side. Thats to give some more area to mount the servo to. Put the servo
on the side away from the exhaust. Otherwise known as the left side of the plane when
looking from behind. Be sure the fuse is straight before the glue dries. A little right and or
down thrust is ok. Avoid up and left thrust! Not good!
Mount your motor with some sheet metal screws. Drill a small pilot hole. Mount the throttle
servo. Attach the elevator to the two tail blocks with small sheet metal screws and a plastic
washer of downspout material. Mount the rudder with 2 small sheet metal screws and plastic
washers. Mount the elevator servo. You'll need to carefully remove some of the elevator
coroplast so it will sit on the blocks. Put some padding under the Sullivan 2 oz tank and
attach it with electrical tape or equivalent. Be sure it is not to tight or the padding will get
crushed and you'll have fuel foaming. Leave it looser than you think it should be! Remove
the bottom lip from the pill bottle and tape it into place behind the fuel tank.
Build the wing by gluing in the fiberglass rods Top and bottom with Pro-bond or equivalent
polyurethane glue. Pin the rods into place while the glue dries or they will get pushed out of
the slots. Attach trailing edge wood and attach the ailerons. If you want a little added
strength put a piece of lightweight unidirectional strapping tape on the leading edge and one
on the bottom of the wing over the spar. Sand lightly and spray on a light coat of 3m-77
before you put on the tape. Cover with tape or low temp iron on covering. Be careful when
ironing not to melt the foam!
The front wing mount should be just behind the pill bottle. Glue it into place with some goop.
Pu the wing in place and put the rear mount just behind the wing and glue it into place.
Again be sure the fuse is pretty straight.
Put the receiver wrapped in padding into the pill bottle and secure it with some tape or a zip
tie. Tape the battery to the rods just behind the wing. Use a 350ma battery or so. The
battery should not weigh much more than an ounce. I like Nimh packs from
www.cheapbatterpack.com.
Center of Gravity should be right on the spar.
Go fly!
New to 1/2 A? Here's what you might need.
AP Wasp .061 or Norvel .061 engine. Fuel with 20% Castor and 10-20% nitro recommended
for break in.
Small size fuel tubing. Notice in the pics I put a small piece of regular fuel tubing onto the
fuel tank brass and put the small size tubing inside that. Works well as it is a pain to put the
small tubing on the brass! Use the small tubing on the clunk line also. The regular stuff is
too thick! Clunk won't reach to the bottom of the tank.
5.7 x 3 APC props. These have a large hole. Use a piece of fuel tubing or use a piece of
nyrod and one of the included adaptors to make it fit right.
Glow clip that clamps onto head and glow plug. Regular clip ons won't work.
A half A starter is nice but not absolutely required.
I recommend High tech HS 56 servos for elevator and ailerons. HS 55 is fine for throttle.