Aerobatic Performance Team
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Absolutely the Best in Giant Scale Team Performance ! |
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ARF Reviews
Extreme Composite Edge 540T 50CC Dietrich Performance75CC Extra260
product Reviews
Instruction Manuals
The Ladies Justina and Dietrich 42% Extra 260
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Extreme Composite Edge 540T 2 x 2 m
Build Review by "Shaky" Svein Part 4
Now lets make a place for the batteries.
There is no pre-made place for batteries
here, and since the length is as long as the wing span I need much weight
up front to get the CG right. And I don't want to put on extra weight in
order to get the plane balanced correctly. That is a no-no. As you
can see on the picture, I mark off where I need the bulkhead for my two
batteries. I use light weight balsa a make two pieces to put on top of
each other to glue together for the back wall. When they fit fuse cavity,
I scribe some pen lines so I can have some alignment mark when I glue. I
also drill 4 holes from top threw both balsa where I glue in some match
sticks for extra strength. I use 12 minutes epoxy here and glue the sticks
and the balsa together.
Now I drill 4 holes in the inside wall for
the legs where to put 4 hook screws and glue them on place with also a
piece of balsa behind.
When all this is dried, I now install the
bulkhead. Be sure to use plenty of 12 minute epoxy, as you can see
of the picture front and back hooks are in place. I intend to use foam
around the batteries and fasten them with rubber bands. This will be shown
on the next step.
Well, since I now can
install the batteries, I'll mount the switches for my two batteries and
one for ignition. The switches are Smart Fly Super Switch HD. Here I just use the inside retainer of the switches and
mark of where to make the cut outs and drill holes for screws. This
is done the same way on all three switches. This is heavy duty switches
with charging jacks inside them.
Now this is done I put in place the foam
padding underneath the batteries and put the batteries in place, using
rubber bands to hold them in place as shown. Before I do this I actually
connect the wires between batteries and switches and use electric tape
around the connections, to ensure that they won't come apart in flight.
The next step will be to install rudder
servo, throttle servo, choke servo, and power expander in the plane body..
I'll go ahead and finish this before I go to the wings and elevators.
I
remember I said that I should
finish up the fuselage before I got started on the wings but, I started
them anyway. I began by inletting the slots for the control horns in
both elevators and ailerons. When this is done I use 12 minute epoxy to
glue them in place. I also use a tape around the penetrations so I don't
get too much glue out on the plane. While these are drying I make the
arms for the servos and, as you can see on a picture, they are
Phenolic arms to screw on to a round servo arm.
Then it's just to slide the servos in
and secure to the horizontal stab and screw in place. As you can see one
a picture I mark of an cut a small piece out from the elevator so that
the gap between the wing part and elevator are a bit bigger. I had a
thought that gap was too small and will not risk them touching in the
air. I make the pushrods ready and put them in as well. Both the
elevators are now finished.
Now that the elevators are
finished, I can make slot in the fuselage for the pull pull cable to
exit the fuse and connect to the rudder. A pre-made marking template
is included with the kit to put between the horizontal stab and
the fuse. This is shown in the picture above and it's and easy chore
just to mark with a pen and cut out for the cable.
No guessing about where to make the
slot. When this is done on both sides I put the elevator servo
in place and connect the pull pull cable. All this comes with the
plane. As you can see the pull pull is now finished and
ready for action.
Then I install the throttle
and choke servos. And lay on top the pushrods. This is for me to see
were to make a small mounting place for the pushrods. In one picture you
can see that I have made a small mounting place in the side of the plane
body.
I also make place for the power expander
I use two small balsa pieces to glue in place for me to use for the hold
down screws.
The next step now is to set up
the pushrods for throttle and choke and install the Smart Fly power
expander and make ready the wings. I like the Smart-Fly power
expanders for my planes because I know that I'll have equally
distributed power to all my servos. Also, the peace of mind with
two battery redundancy is most comforting. Then it is soon ready
for the maiden flight. Stay tuned, more to come.
I now have mounted the power
expander and the pushrods for the throttle and servo, as you can see in
the first picture. Then I start on finishing the ailerons servos.
I actually will use some Power Hd 9150 MG servos for the ailerons.
The reason for this is that my Hitec servos were damaged. And there is a
guy here in Norway I know of that has tested these servos out with a
very good result in a Toc Extreme Yak 40%. He recommends them
highly and will keep on using them, and they are one third of the cost
of other servos in that size class. So I will test them as well.
In one of the wings,
there was some damage in the mounting place for the servo, so I have to
cut open a small hatch for me to work through when fixing this problem.
I also made myself a long screw driver so that I can screw in the
screws to the servos, as you can se of the picture. Now the servos
are in place and the wings are ready. The next step now is
to build and finish the cockpit.
Then there is of course, the setup
of all the servos and get the correct CG.
Stay tuned, more to come.
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