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Old Jan 05, 2013, 09:24 PM
GymDandy Flyer
Ken Spencer's Avatar
Webb City, Missouri
Joined Apr 2004
598 Posts
Build Log
Aero Bat II

Aero Bat II Specs
Wingspan : 16 3/4 inches
Length : 8 inches
Weight : 27.3 grams
Receiver : AR6400 2.4 gHz
Motor/Gear Box : UM P-51
Battery : 1S Li-Poly 160 mAh

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Step 1.
Build the Wing Angle fixture first.
Insert support template tabs into wing angle template slot.

( Glue fixture as shown using Foam Safe CA. )



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Step 2.
Fit Left and Right body halves together and Glue as shown.
( Recommend using wax-paper between foam and working surface. )
When glue has dried, Turn the body, so the SMOOTH side is in a UP position
( the side with no groves or markings ) for next step 3.




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Step 3.
Now that SMOOTH side ( the side with NO groves or markings ) is turned UP.
Place the foam Back Bone into position as shown.
Center and glue it into place using Foam Friendly CA.

( Note: Round over the Back Bone’s top edge with sandpaper if desired. )



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Step 4.
Turn the Body over ( to the side with groves and markings )
Locate and glue the Plywood Motor Support as shown in picture.
Location is marked on body.




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Step 5.
Locate and Glue the two vertical Belly sides to the body as shown in picture.
( Note: Location lines are shown on foam body. )



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Step 6.
Now, Glue the Depron support cover over the plywood motor support and between the two vertical Belly sides.
( Note : you can Round and Break all sharp edges with light sand paper after this step is completed. )



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Step 7.
Prepare Dihedral Joints
Apply removable masking tape parallel to each side of the wing groves as shown in picture below.
This will help in removing excess Epoxy from wing and joint areas later.

( It is recommended to do only one half of the body at a time. )



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Step 8.
Place the INNER wing grove over a sharp edge of your building surface as shown.
CAREFULLY pre-bend the body DOWN to open the top of the grove to about 1/16 inch wide.



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Step 9.
CAREFULLY pre-bend the OUTER wing tip groves UP to almost close the groves.
( Clean foam out of the two groves if necessary. )



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Step 10.
Test Mount the wing onto the wind angle fixture before adding Epoxy to joints.
Using push-pins thru the wing and body tab holes to hold the wing in place securely.

( Picture below shows the wing panels seated correctly in fixture. )



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Step 11.
Now, remove the body from the wing angle fixture.
This will allow you to work the 30 minute Epoxy glue down into the groves to make a strong glue joint.
Then reinstall the wing with applied Epoxy onto the wing angle fixture.




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Step 12.
Carefully wipe excess Epoxy away from edge of masking tape.
Then as the Epoxy is starting to dry, remove the masking tape.
Denatured Alcohol and a rag can be used for clean up and to remove any excess spots of Epoxy before drying.

( Allow Epoxy to Dry Overnight. )

** REPEAT **
Steps 7-12 To opposite end of wing.



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Step 13.
Remove Rudder surfaces from both Vertical stabs.
Slide the slotted Vertical stabs over the rear wing notch.
Using the notch and alignment marks on each side of the Belly Verticals.

Glue both Vertical stabs into place using Foam Friendly CA.



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Step 14.
Bevel the elevator and both rudders at a 45° angle
( Note : Left & Right rudder )
and use Blenderm tape for hinges.
Mount the rudders and elevator to the fuselage.




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Step 15.
NOTE : FOAM DOES NOT LIKE HIGH TEMPATURE OR FLAME
Cut 2 pieces of Heat Shrink Tubing ½ inch long and a 0.8mm Carbon Rod 1 ¾ inch long for Rudder Spread Bar assemble.
Make the Rudder Spread Bar by placing the Carbon Rod about 1/8 inch inside the Heat Shrink Tubing at each end of the rod. Then shrink the tubing down to fit the rod tight.


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Step 16.
Use a toothpick to open up the holes in each Rudder to allow the Rudder Spreader Bar’s heat shrink to be press in and act as a hinge at each rudder.
( Align the rudders parallel.)
and Glue in place on the outside of each rudder with Foam Safe CA.
Trim off the excess heat shrink tubing when dry.



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Step 17.
Mount the motor on bottom of the Belly side as shown with two 3/8 inch #0 screws and UHU por Glue.
( Note : PZ P-51 Motor and Gearbox is recommended with factory mounting pins removed. )


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Step 18.
NOTE : FOAM DOES NOT LIKE HIGH TEMPATURE OR FLAME
Slide 1/2 inch heat shrink over two of the 2 inch z-bends pushrods and shrink before installing on the model itself.
Separate and then install as shown on Step 19 & 20.



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Step 19.
Mount the AR6400 RX using two peaces of scrap foam under board to allow the motor wires to pass beneath the Reciver board.
Note: Insert the Z-bend pushrods into RX before Gluing in place with UHU por.
( Use the end of the Depron motor mount layer as a guide to position the RX board. )


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Step 20.
Add the Rudder and Elevator Horns as shown in picture. Then install the Z-bends pushrods and connect as shown in Step 18.
( Use CA or Ambroid Glue to secure the pushrods to the heat shrink tubing after adjusting to desired length. )


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Step 21.
Battery is mounted on top just aft of the head with Velcro mounting tape.
Move the battery to obtain correct balance.

( Note: the addition of the ears (in kit) and some moveable eyeballs can be added from your local craft store if desired. )


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Step 22.
Check that your center of gravity is at about 3/8 inches from leading shoulder of the wing or as marked on top of Foam Back Bone. ( Adjust battery if necessary. )

You are now ready to maiden your
Aero Bat II

Happy Flying !





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Just Click Here : http://www.BSDmicroRC.com


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Suggestion for Finishing



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Old Jan 05, 2013, 09:42 PM
Registered User
Livermore, CA
Joined Sep 2004
8,583 Posts
What a neat project!
Now, How does it fly??
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Old Jan 05, 2013, 09:59 PM
GymDandy Flyer
Ken Spencer's Avatar
Webb City, Missouri
Joined Apr 2004
598 Posts
Quote:
Originally Posted by Butch777 View Post
What a neat project!
Now, How does it fly??
Hi, Butch777
GREAT ! Like a Bat out of H_ _ _.
Quick and very manuveravable.
Keep Them Flying ! Your friend, Ken
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