Buzzard Models Mark 8 Instructions Manual Download Page 24

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Center of Gravity - The CG will be set using the battery location. Build a CG test stand, use the tips of your fingers, or even the

eraser end of two equal length pencils shoved in some styrofoam. A good place to start is having the CG located at the main wing

spar, more advanced pilots will like it a little further back. Adjust the fore and aft position of the battery on top of the fuselage to

attain the desired CG. It is important to use the propeller and battery that you will be flying with.

Summary of Contents for Mark 8

Page 1: ...asy assembly Wing span 16 Length 16 5 Battery 1S 130 1600mah Weight RTF w battery 30 35 grams Please read and understand all steps to these instructions before beginning assembly This plane is not a t...

Page 2: ...ther brands of foam glue such as Foam tac or UHU por Regular super glue will attack the depron foam use only foam safe CA glues We like to use the BSI Super Gold Plus which is a medium viscosity foam...

Page 3: ...Kit contents 3...

Page 4: ...o support the foam while doing this Fold the hinges open and place over the corner of the table with the hinge side down Using 120grit paper bevel the corners of the foam just enough to allow the hing...

Page 5: ...hinge flexed closed to 45 degrees Flex the control surfaces up and down and verify free movement Sand more if necessary to allow easy and free movement Do the rudder elevator and aileron hinges the s...

Page 6: ...the carbon fiber reinforcements in place and then liberally apply a foam safe CA glue with an extender tip Dabb the excess glue off with a paper towel before it dries Do the same with the rudder and e...

Page 7: ...onservatively Makeup brushes work for bigger areas Alternatively airbrushing is the best way to paint alcohol or india inks are ideal the same basic acrylic paint thinned one to one with windshield wa...

Page 8: ...ntal stabilizer Add the 1 2mm carbon mainspar first the 0 8mm fuselage reinforcements go over the top Add the 0 8mm aileron reinforcements and aileron horns Again dry fit the parts and then add medium...

Page 9: ...wrinkles Layout where your parts will fit before applying glue One part at a time remove each aircraft part from the covering film and very lightly mist one side with 3M 77 spray adhesive Stick the pa...

Page 10: ...Trim the covering With the parts still upside down trim around their perimeters with a new sharp hobby knife blade over a cutting mat 10...

Page 11: ...Painting Here is an example of a similar plane that was painted after covering 11...

Page 12: ...Glue it all together Glue lower fuselage in place 12...

Page 13: ...PRO BRICK MXL RX62E Trim the attachment ears off of the 1 7g BM5320S aileron servo and install it in the direction shown securing it with glue The MXL RX62E can be installed secure it with small dabs...

Page 14: ...Pushrod assembly Overlap the two 1 long zee bends onto the 11 0 5mm carbon pushrods as shown shrink the tubing 14...

Page 15: ...im them to make the pushrod travel straight glue them in place The next step is very important power up the receiver and bind it to your transmitter following the MXL RX62E instructions set your trans...

Page 16: ...cohol There are two holes in the composite arm that correspond with holes in the nylon arm pin with two of the 7 8 0 8mm carbon pins from the hardware kit through a piece of wax paper into a block of...

Page 17: ...y lapping them over two of the 5 8 zee bends with heat shrink Use the outer hole on the aileron servo arm and the middle holes on the aileron horns Again verify that the aileron servo is centered and...

Page 18: ...Upper fuselage Find a secure way to support the fuselage these two foam blocks work great Glue the upper fuselage in place 18...

Page 19: ...Vertical Stabilizer The vertical stabilizer can be glued in place pins can help hold the part in alignment 19...

Page 20: ...hrod Trim the two composite supports so that the pushrod runs straight then glue in place The 1 zee bend goes into the smallest hole of the linear servo the 5 8 zee bend goes in the innermost hole of...

Page 21: ...Rudder Pushrod 5 8 zee bend goes in the innermost hole of the rudder horn 21...

Page 22: ...lue to the protruding pins When dry trim the pins leaving a small glue blob on the front side of the mount to make sure it is secured to the pins the pins provide the majority of the strength Install...

Page 23: ...out with a sharp hobby knife Soak each decal separately in room temperature water for approximately 30 seconds or until the decal starts to slide on the carrier paper Place the entire decal still on...

Page 24: ...qual length pencils shoved in some styrofoam A good place to start is having the CG located at the main wing spar more advanced pilots will like it a little further back Adjust the fore and aft positi...

Page 25: ...at the battery slides in and out with a desired amount of friction Check for sharp edges on the batteries that may dig into the foam If you have enough wire length it is nice to have the battery slide...

Page 26: ...k off and reapply Flying Tips The Mark 8 has very low wing loading and does not like much wind For your first flight I would recommend flying either in a large indoor area such as a gymnasium or wait...