Stevens Aero Model BuzzBomb 100 Manual

BuzzBomb 100
Toon Buzzard Bombshell
Length 16 inches | Span 21 inches | Area: 100 inches2| Flying Weight 1.8 oz.
Version 02/21/2012
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 1 of 12

Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 2 of 12
WARRANTY
Stevens AeroModel guarantees this kit to be free from defects in both material and workmanship at the
date of purchase. This warranty does not cover any component parts damaged by use or modification.
In no case shall Stevens AeroModel’s liability exceed the original cost of the purchased kit. Further,
Stevens AeroModel reserves the right to change or modify this warranty without notice.
LIABILITY RELEASE
In that Stevens AeroModel has no control over the final assembly or material used for final assembly,
no liability shall be assumed nor accepted for any damage resulting from use by the user. By the act of
using the user-assembled product, the user accepts all resulting liability.
If the buyer is not prepared to accept the liability associated with the use of this product, the buyer is
advised to return this kit immediately in new and unused condition to the place of purchase.
THIS PRODUCT IS NOT INTENDED FOR CHILDREN 12 YEARS OF AGE OR YOUNGER.
WARNING: This product may contain chemicals known to the state of California to cause cancer
and/or birth defects or other reproductive harm.
PRODUCT SUPPORT
This product has been engineered to function properly and perform as advertised, with the suggested
power system and supporting electronics as outlined within this product manual. Product support
cannot be provided, nor can Stevens AeroModel assist in determining the suitability or use of
electronics, hardware, or power systems not explicitly recommended by Stevens AeroModel.
For product assembly support, replacement parts, hardware, and electronics to complete this model,
please contact Stevens AeroModel at www.stevensaero.com.
Stevens AeroModel
26405 Judge Orr Rd., Colorado Springs, CO 80808 USA
719-387-4187 www.stevensaero.com

Project Checklist
Kit Contents
☐Laser cut wood (6 Sheets)
☐Build Instructions (Photo Supplement Available for Download at StevensAero.com)
☐Computer drawn plan set (2 Pages)
☐Acetate Windscreen
Taped to back of wood brick:
☐1 - 0.032 in. x 12 in. wire
☐2 - 0.015 in. x 18 in. wire
☐Hardware Bag
1 - Delrin Receiver Tray Clip
1 - 1-1/2 in. length of 1/16 in. heat shrink tube
1 - 3 in. length of 1/8 in. dia. hardwood dowel
6 - #16 Rubber Bands
Suggested Electronics (Available at StevensAero.com)
☐Spektrum DSM2 2.4ghz transmitter with at least 3 channels*
☐Parkzone or Spektrum ultra micro receiver/esc/servo “brick” [PKZ3351] or [SPMAR6400]**
☐Parkzone motor and gearbox [PKZ3624]
☐130mm x 70mm Propeller [EFL9051]
☐3.7V 120-160mAh LiPo compatible with Parkzone / Spektrum “brick”
*While the game control style transmitters that ship with most ready to fly models are adequate, a full size transmitter
such as the DX5e, DX6i, DX7 etc. offers superior control and performance.
**The six channel SPMAR6400 servos are internally mapped to “Rudder” (Yaw) and “Elevator” (Pitch). For three
channel usage, the user is required to utilize a computer radio capable of mixing. User must implement a +/-100%
mix of Aileron to +/-100% Rudder to relocate the roll axis control for this model to the transmitters Aileron (Roll)
channel. When using the PKZ3351 or PKZUA1151 the use of a computer radio and this mix is not required as the
servos on this unit are internally mapped to “Aileron” (Roll) and “Elevator” (Pitch).
Required Building Supplies and Tools
☐1-1/2 in. Mini Lite Wheels [DUB150MW]
☐1/4 oz. Medium CA Glue [PAAPT04]
☐1/4 oz. Thin CA Glue [PAAPT10]
☐CA glue applicator tips [PAAPT21]
☐Hobby Knife with ample supply of #11 blades
☐Sanding block with 240/120 grits [SB120240]
☐Heat Gun and Covering Iron
☐Small Needle Nose Pliers
☐1/2 in. wide clear or hinge tape [DUB916]
☐Soldering Iron
☐AeroLITE Film (3 Patch Packs or 1 Roll)
Optional Building Supplies and Tools
☐CA glue accelerator [PAAPT15]
☐1oz. Thick CA Glue [PAAPT20]
☐Balsa filler [HCAR3401]
☐Modeling Clay for Ballast
☐CA glue de-bonder [PAAPT16]
☐Long sanding bar
☐Masking Tape (Low tack painters tape)
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 3 of 12

General Assembly Instructions
Thank you, for purchasing this Stevens
AeroModel Buzz™ (100). A micro indoor flyer
based upon the Buzzard Bombshell. This product
has been developed and manufactured using
state of the art CAD/CAM systems and features a
unique interlocking construction process that,
when compared to traditional methods found in
other model aircraft kits, save countless hours of
measuring, cutting, sanding, and fitting. We are
certain that you’ll find our kit to offer a truly
exceptional build experience. As this kit is
recommended for the novice model builder and
pilot; we invite beginners who have purchased
this kit to seek the help of a seasoned builder and
pilot. At any time should one run across a term or
technique that is foreign please don’t hesitate to
contact our staff with your questions.
READ THIS!
Please READ and RE-READ these instructions
along with any other included documentation prior
to starting your build and/or contacting our staff
for builder support.
Pre-sanding
Do not skip this step. Prior to removing any parts
from the laser cut sheet wood use a sanding
block loaded with 120-240 grit paper and lightly
sand the back side of each sheet of wood. This
step removes any residue produced as a result of
the laser cutting process and, as we have found
that most stock wood sizes run several
thousandths of an inch over sized, slightly
reduces the thickness of each sheet.
Leave your pre-sanded parts in the sheet until
required in the assembly process.
Protecting your worktable
Use the poly tube that this kit was shipped in as a
non-stick barrier between your worktable and the
product assembly. Promptly clean up any epoxy
spills with rubbing alcohol and a disposable towel.
Bonding the assembly
As this product tabs, notches, and otherwise
interlocks like a 3D puzzle we suggest that when
fitting parts you dry fit (use no glue) the parts
together first. It’s advised to work 1-2 steps
ahead in the instructions using this dry-fit
technique which allows ample opportunity to
inspect the fit and location of assembled
components and realizes a benefit as each
successive part contributes to pulling the entire
assembly square. Once you arrive at the end of a
major assembly sequence square your work on
top of a flat building table and revisit the dry fit
joints with glue. Using the dry-fit process you’ll be
able to recover from a minor build mistake and
will ultimately end up with a more square and true
assembly.
Unless otherwise noted in the instructions we find
it easier to tack glue parts (temporarily bonding
parts in assembly using a small dot of glue) using
medium CA glue applied with a fine-tip CA glue
applicator tip. Tight fitting joints should be bonded
using thin CA glue applied, sparingly, with a CA
glue applicator tip.
Never force the fit!
Remember this is a precision cut kit, our
machines cut to within 5 thousandth of an inch in
accuracy. Yet the wood stock supplied by the
mill may vary in thickness by up to 20
thousandths. This variance in the wood stock can
cause some tabs/notches to fit very tight. With
this in mind, consider lightly sanding, or lightly
pinching, a tight fitting tab rather than crushing
and forcing your parts together. You’ll break
fewer parts in assembly and will end up with a
more square and true airframe.
Manual Updates
Please check our web-site for updates to these
instructions prior to commencing the build.
While not required for proper assembly of this
model, full-color photos following the build
sequence given in this instruction manual are
available to download at StevensAero.com
To obtain downloads and updates relative to this
model aircraft kit, please visit the corresponding
product page at StevensAero.com
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 4 of 12

Fuselage
Fuselage parts are designated with an “F”
followed by a number. Parts have been
numbered so that the fuselage assembly and
required parts follows in numeric order from F0 to
F26. With part F26 being utilized in the final
assembly process.
The fuselage is of traditional sheet side with
central crutch assembly. Many of the formers will
need to be installed in a forward and top
orientation. Unless otherwise specified, formers
should be installed with the etched part number
facing the front of the assembly and any top or
bottom designations followed.
You will dry fit the majority of this fuselage
assembly together only gluing at the final
instructional steps. When parts cannot easily be
retained with friction, use a single tiny drop of
medium CA glue applied sparingly through a CA
glue applicator tip to “tack glue” the part in place.
Should you commit an error in assembly it will be
easier to recover from the mistake and remove or
correct the part fit in error if you do not slather the
assembly in glue after each step! Further, this
method of assembly will allow our interlocking
design to do it’s job as each successive part
installed within the fuselage will help pull the
entire structure square and true.
1. Fit two 1/32 in. ply parts marked “F0” to the
slots within the Delrin receiver tray clip
(located in your parts bag). See “Receiver
Tray Detail” on the fuselage plan page for
more detail.
2. Now fit and bond the receiver tray to the
central crutch F1, on the side with the etching
marked “Bottom”. Ensure the long tab on the
clip is oriented towards the rear of the crutch,
to later allow for easy installation/removal of
the receiver.
3. Fit and tack glue former F2 perpendicular
(square) to front of central crutch F1. Ensure
the marked “Bottom” of former F2 and Central
Crutch F1 are both located to the bottom of
the assembly.
4. Fit and tack glue battery tray F3 perpendicular
to former F2 as illustrated on the plan.
5. Fit and tack glue former F4 perpendicular to
the rear of the central crutch F1. Observe the
proper “Top” / “Bottom” orientation as marked
on parts.
6. Fit 3/16 in. balsa fuselage doubler F5 to
battery tray F3 and former F2. Note: Tab on
F3 battery tray will extend beyond outside
surface of F5 by 1/20th in. Now, tack glue F5
only at tab/notch points where it contacts the
fuselage formers F2 and F3.
7. Dry fit the assembled central crutch to right
fuselage side F6. Ensure that all tabs of
central crutch assembly seat properly within
their corresponding slots in the fuselage side.
Now, tack glue the crutch assembly only at
tab and notch locations at fuselage sides.
8. Fit 1/32 in. ply motor mount F7 to fuselage by
sliding tabs through the doubler F5 and the
fuselage side F6.
Tack glue F7 motor mount to retain.
Now wick thin CA around doubler F5 and
lightening holes within doubler to thoroughly
bond it to the right fuselage side.
9. Fit instrument panel F8 to fuselage side
behind doubler F5.
10. Fit remaining 3/16 in. balsa fuselage doubler
F9 to battery tray F3 and ply motor mount F7.
Tack glue within fuselage assembly only at
tab and notch locations to retain.
11. Fit 1/32 in. ply landing gear brace F10 to slots
in right fuselage side F6 immediately behind
former F2 and straddling F3 battery tray. Tack
glue part at tab/notch location at fuselage side
to retain.
12. Fit 1/32 in. ply landing gear brace F11 to slots
in fuselage side immediately behind F10
leaving a 1/32 in. spacing between parts F10
and F11 and straddling F3 battery tray. Tack
glue part at tab/notch location at fuselage side
to retain.
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 5 of 12

13. Fit left fuselage side F12 to left side of
completed assembly. Ensure all tabs nest
completely within the corresponding slots cut
to fuselage side. Square the assembly on a
flat surface and tack glue at all tab/notch
locations to retain.
DO NOT bond the fuselage sides to the
upper half of former F4! This will be done
in a later step.
Finally, wick thin CA around doubler F9 and
lightening holes within doubler to thoroughly
bond it to the left fuselage side F12.
14. Bring the rear of the fuselage sides together
and fit stabilizer mount F13 to slots at the end
of the fuselage. Tack glue with medium CA.
15. Fit and tack glue former F14 to fuselage side
immediately in front of F13.
16. Fit and tack glue former F15 to fuselage sides
where indicated on the plans.
17. Fit 3/32 in. balsa spine F16 to formers F4,
F15 and F14. Tack glue with medium CA.
18. Fit the front edge of wing saddle F17 to
former F2 and fuselage sides. Tack glue with
medium CA glue ONLY at former F2 and
forward most right and left tab and notch
locations.
19. Wrap the upper rear portion of the fuselage
sides together along the back of the wing
saddle F17 and at F4. The fuselage sides
should rest against the contoured edges of
F17 and F4. Ensure the tabs in F17 fit
properly within the slots of the fuselage sides,
and that there are no gaps. Tack glue parts
with medium CA.
20. Temporarily fit the provided 2 in. dowel
through the hole in the spine F16. Slide a
total of six rear wing mount dowel supports
F18 onto the dowel, three each to right and
left side of the F16 spine. Lightly tack glue
the supports to each other and the spine.
Now, REMOVE THE DOWEL then more
thoroughly bond the F18 supports to the
spine, former F4 and each other with thin CA.
21. Fit and bond forward wing retention dowel
mount F19 to wing saddle F17 and fuselage
sides.
22. Fit fuselage bottom F20 in place between the
fuselage sides and to former F4. Square
assembly on a flat surface and bond bottom
to the sides from the inside of the fuselage.
Now, bond formers F14, F15, and spine F16
to fuselage assembly at this time.
23. Fit and bond part F21 to fuselage sides and
landing gear brace F11.
24. Moisten one side of nose sheeting F22 with
glass cleaner to facilitate bending it around
the nose. See plan set for part location, now
fit to tabs in fuselage sides and former F2 -
moist side out - and tape in place and allow to
dry. Once part has dried, remove tape and
bond in place.
25. Follow the procedure in step 24 to fit and
shape nose sheeting F23 to the top of the
nose. When dry, bond with thin CA.
26. Fit and bond one stringer to right and left side
of formers F4, F14, and F15. These should
go in easily, however, two extras stringers are
supplied just in case one should break during
installation.
27. Fit pushrod guide F24 to the RIGHT outside
edge of former F15 and extending to the aft of
the fuselage spanning stringer and fuselage
side.
Note: Ensure the relief in the edge of F24 is
oriented to the top, against the stringer,
forming a slot for the pushrod to pass
through. When satisfied with the fit, bond F24
in place. Ensure no glue enters the slot
between stringer and F24 as this will interfere
with the operation of the pushrod.
28. Slide ply part F25 between landing gear
braces F10 and F11, creating a pocket to
receive the wire landing gear. Wick a small
amount of thin CA glue within and around the
pocket to secure F25. Ensure that the pocket
does not fill with glue. Set ply part F26 aside
until landing gear is installed during final
assembly.
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 6 of 12

29. Revisit all tack glued joints between and
along parts with thin or medium CA glue to
more thoroughly bond the assembly. Go easy
on the glue as this can add significant weight
to the completed model.
Now, lightly sand fuselage smooth. Remove
excess from any tabs that protrude through
the fuselage sides, especially around the wing
mount. Trim and sand the rear dowel
supports F18 to flow smoothly from former F4
into the contours of the aft fuselage. Tip:
When shaping parts, protect the areas that
you do not wish to sand, or reduce through
sanding, with masking tape.
30. Lightly sand the edges of the nose to a
pleasing, rounded shape. Leaving the
fuselage square where the wind screen will
be installed. Set fuselage aside until final
assembly.
Tail Group
The horizontal and vertical stabilizers, rudder, and
elevator are cut from the 3/32 in. balsa sheet and
designated with a “H”, “V”, “R”, or “E” as
appropriate, followed by a numeric. Parts have
been numbered so that the assembly and
required parts follows in numeric order. Assemble
components over the plan sheets, protecting the
plan from glue spills with the poly bag that this kit
shipped in.
31. Assemble the Horizontal Stabilizer over the
plan, from parts H1 through H6. Bond with
CA. Lightly sand stabilizer following the
sanding instructions given on the plan set.
32. Assemble Elevator over the plan, from parts
E1 through E5. Bond with CA. Lightly sand
Elevator following the “Stabilizer and Elevator
Tape Hinge Diagram” and sanding
instructions given on the plan set.
33. Assemble the Vertical Stabilizer over the plan
from parts V1 through V5. Bond with CA.
Lightly sand stabilizer following the sanding
instructions given on the plan set.
34. Assemble the Rudder over the plan from
parts R1, R2, and R3. Bond with CA. Lightly
sand Rudder following the “Stabilizer and
Rudder Tape Hinge Diagram” and sanding
instructions given on the plan set.
Wing
The wing is composed of one spar, leading edge,
trailing edge, ribs and tip sheeting. Wing parts
are designated with a “W” followed by a numeric.
Parts have been numbered so that the wing
assembly and required parts follows in numeric
order from W1 to W28.
The wing is assembled one section at a time - left,
then right inner sections, center section, and the
wing tips separately. When a part is required in
the build sequence (for instance “W3”) refer to the
plan set for part placement.
You will dry fit the majority of this wing assembly
together only gluing at the final instructional steps.
When parts cannot easily be retained with friction,
use a single tiny drop of medium CA glue applied
sparingly through a CA glue applicator tip to “tack
glue” the part in place. Should you commit an
error in assembly it will be easier to recover from
the mistake and remove or correct the part fit in
error if you do not slather the assembly in glue
after each step! Further, this method of assembly
will allow our interlocking design to do it’s job as
each successive part installed within the wing will
help pull the entire structure square and true.
Wing Center
35. Begin by building left half of wing. Locate
parts W1 (main spar), and one each of ribs
W2, W3, and W4. Using the plan set as a
guide, dry fit ribs W2, W3, and W4 to deeper
slots within spar W1.
Note: The bottoms of all ribs should seat flush
with bottom of spars, if they do not, double
check your rib installation over the plan set.
36. Fit trailing edge W5 to ribs W2, W3, and W4
with the arrow marked on W5 pointing to wing
rib W2. Tack glue part to retain.
37. Fit and bond gusset W6 to trailing edge and
rib W2.
38. Fit leading edge web W7 to ribs W2, W3, and
W4 with the arrow marked on W7 pointing to
wing rib W2. Tack glue part to retain.
39. Fit leading edge W8 to leading edge web W6
with arrow marked on W8 pointing to wing rib
W2. Tack glue part to retain.
40. Fit and tack glue sub-ribs W9 and W10 to W1
spar and W7/W8 leading edge.
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 7 of 12

41. With wing held flat against your building
board, fit and glue diagonals W11, W12, W13,
and W14 between ribs and sub ribs as
indicated on plan.
Note: W11 differs slightly to allow for the
dihedral break, and must be located between
rib W2 and sub-rib W9.
With all diagonals in place, bond all mating
surfaces between diagonals, ribs, spar,
leading edge, and trailing edge with CA glue.
42. Block and support the left side of the wing to
allow for the right side spar to sit flat on your
building board. Now, repeat steps 35 through
41 to build the right half of the wing.
43. With center section (narrow portion between
left and right ribs W2) held flat against the
building board, fit and glue trailing edge W15
between ribs W2.
44. Fit the center section leading edge parts W16
and W17 between center ribs W2. Note: that
arrows on W16 should face forward.
45. Fit and glue ply trailing edge reinforcement
W18 to the recess at the trailing edge of wing
spanning parts W5 and W15.
Wing Tips
46. Build the left wing tip first. Fit spar W19 to rib
W20.
47. Support the wing so that the left wingtip will lie
flat on the building board. Fit and tack glue
W19 to rib W4.
48. Fit trailing edge W21 with arrow marked on
part W21 pointing to rib W4 and spanning ribs
W4 and W20. Tack glue to retain.
49. Fit leading edge web W22 with arrow marked
on part W22 pointing to rib W4 and spanning
ribs W4 and W20. Tack glue to retain.
50. Fit leading edge W23 on top of W22 with
arrow marked on W23 pointing to rib W4 and
spanning ribs W4 and W20. Tack glue to
retain.
51. Fit sub-rib W24 to leading edge and spar.
52. With wing tip held flat atop your building
board, fit diagonals W25 and W26 between
ribs as indicated on the plan.
Note: W25 differs slightly to allow for the
dihedral break and spar pass through. W25
must be located between ribs W4 and sub-rib
W24.
With all diagonals in place, bond all mating
surfaces between diagonals, ribs, spar,
leading and trailing edges with CA glue.
53. Fit and bond wing tip support W27 to rib W20.
Marked arrow and tab on W27 should be
oriented to top of wing.
54. Bond one each W28a and W28b to create
part W28 wing tip sheeting.
55. Tack glue W28 to the leading edge and
forward most flat (area on rib just forward of
front tab) of rib W20.
56. With wing tip on a flat surface, slowly wrap tip
sheeting over rib W20 from front to back,
fitting to tabs on rib and wing tip support W27,
to slots in sheeting. Tack glue assembly as
you proceed. Once properly positioned, bond
all mating surfaces between wing tip at rib,
spar, leading edge, wing tip support, and
trailing edge.
57. Repeat steps 46 through 56 to build right wing
tip. Caution! Ensure that you build a
mirror image wing tip, and NOT two left
wing tips!
Building Tip: Turn plan over and place on a
light colored surface - the back side of the
other plan sheet works well - so that you can
see the wing tip plan through the paper. Build
your right wing tip over this “mirror image” of
the left wing tip.
58. Revisit all tack glued parts with CA glue to
thoroughly bond and retain parts within
assembly.
59. Trim and sand leading edge to flow smoothly
into tip sheeting. Now, sand wing lightly,
rounding leading edge to match the profile on
the fuselage plan sheet. Leaving the trailing
edge square.
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 8 of 12

Final Assembly
60. Cover model in a snazzy scheme with a
lightweight material. We suggest AeroLITE,
available at StevensAero.com.
Note: Leave underside of the rear of the
fuselage uncovered for now. This will be
covered later after pushrods have been
installed.
61. Following “Landing Gear Detail” on plan set,
accurately bend landing gear using a small
pair of needle nose pliers and the included
1/32 in. wire.
62. Trim covering on fuselage to expose landing
gear pocket. Test fit landing gear within gear
pocket of fuselage. Remove.
63. Install wheels of your choosing to landing
gear. We suggest Du-Bro 1-1/2 in. mini lite
wheels [DUB150MW] available at
stevensaero.com. Retain wheels by making a
90 degree bend in gear axle and trimming
excess wire as illustrated on plan set.
64. Install landing gear within fuselage and retain
with 1/32 ply part F26 as illustrated on plan
set. Friction alone should be sufficient to
retain F26 allowing easy removal of landing
gear. If desired, retain F26 and landing gear
within fuselage using thin CA glue.
65. Cut the provided 3 in. length of 1/8 in.
hardwood dowel to 1 and 1-1/4 in. lengths
forming front and rear wing retention dowels.
If desired, paint these dowels to match your
trim scheme.
66. Use a hot soldering iron or knife to open oval
pocket at top/center of wind screen to allow
for installation of previously cut 1 in. length of
dowel (step 65). Reference plan set for
installation of forward wing retention dowel.
Bond within fuselage assembly from behind
wind screen, through former F2, and
underneath wing saddle F17.
67. Use a hot soldering iron or knife to open
circular pockets immediately aft of rear former
F4 to allow for installation of previously cut
1-1/4 in. length of dowel (step 65). Center
dowel between fuselage sides through holes
spine F16 and dowel supports F18. Make
certain equal amounts of dowel protrude
beyond fuselage sides on both right and left
of fuselage. Once centered, bond dowel with
thin CA glue to secure rear wing retention
dowel.
68. Follow the Push Rod Detail on the plan to
make and install the pushrods. The elevator
pushrod will pass through the exit slot in the
left fuselage side, the rudder pushrod through
the slot in F24 on the right side of the
fuselage. Keep pushrods from sliding out by
applying a small amount of tape to each end.
69. With pushrods in place, cover the rest of the
lower portion of the fuselage.
70. Connect the pushrods to the receiver
[PKZ3351 or SPMAR6400]. The rudder
pushrod connects to the servo nearest the
antenna, the elevator pushrod to the servo
farthest from the antenna. Refer to Receiver
Brick Detail on the plan.
71. Fit the receiver to the receiver tray by
engaging the circuit board in the slot in the
shorter post first, then gently press down on
the receiver until it snaps into place in the
notch in the longer post. To remove the
receiver, gently pull back on the longer post to
release the circuit board and lift up on the
receiver.
72. Follow tape hinge diagrams on plan for the
elevator and rudder to attach them to the
horizontal and vertical stabilizers.
73. Open up slot on LOWER LEFT side of
elevator to receive one laser cut control horn.
Fit and bond control horn as illustrated on
plan.
74. Open up slot on RIGHT side of rudder to
receive one laser cut control horn. Fit and
bond control horn as illustrated on plan.
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 9 of 12

75. Remove covering from the tab on the Vertical
Stabilizer, and from the slot in the Horizontal
Stabilizer and rear of the fuselage deck. Dry
fit Vertical Stabilizer through Horizontal
Stabilizer, and fit assembly to fuselage. The
tab on the Vertical Stabilizer will fit the slots in
F13.
76. Temporarily fit wing to wing saddle on
fuselage. Check and adjust square of
Horizontal and Vertical Stabilizers relative to
fuselage and wing assembly until both are
perpendicular to each other and the fuselage
(see the “Stabilizer Alignment Diagram” given
on the plan sheet). When in doubt, stand
back from model and trust your eye, it’s far
more accurate than you give it credit. With
stabilizers squared to fuselage, retain by tack
gluing with medium CA glue at several points
along Horizontal Stabilizer and Fuselage.
When satisfied that everything is square,
bond the tail group with a small amount of
medium CA glue along contact points
between Horizontal and Vertical Stabilizers
and the Fuselage.
77. Trim pushrods to length and attach to control
horns at control surfaces per diagram on
plans. Prior to setting final length of push-
rods (by securing parts “A” and “B” with heat
shrink), power up your radio equipment and
center the trims for channels controlling
elevator and rudder. Once centered at
transmitter, mechanically center the rudder
and elevator. After determining the final
position of the pushrods during flight testing
secure with a small drop of medium CA glue.
78. Open covering over the slot on the bottom of
the fuselage, and mount the tail skid as
illustrated on the plan. Bond with medium
CA.
79. Trim the mounting pins from the PKZ3624
gearbox (these pins are for use on foam
models Yuck!). Now route motor wire from
PKZ3624 through the opening at the nose of
the model and over the landing gear pocket.
Connect motor wires to receiver. Set motor
and gearbox within slot at F6. Secure
gearbox with a drop of glue under each “ear”
to retain proper right offset to thrust line.
Note: CA glue is perfectly acceptable to use
here. Just remember that CA glue is semi
permanent and motor replacement will be a
challenge. White glue, hot glue, and silicone
adhesives (caulk) are also acceptable.
Secure the motor within the assembly using
the glue with the retaining properties and set
time that you are most comfortable with.
Personally I use CA... but then again I never
crash and have never lost a motor....
(sarcasm).
80. Fold the pre-cut acetate windscreen along
the perforations and install in position
indicated on plan. Temporarily retain
windscreen with several small pieces of
masking tape. Now permanently retain by
lifting the edge of the wind screen and
applying small drops of medium CA at several
points (spaced maybe 1-2 inches apart) along
the long edges of wind screen. Use only
enough glue to “spot weld” that windscreen in
position. Remove the masking tape once the
glue has cured.
81. Install a small piece of velcro to the battery,
and on the battery tray F3 (or to alternate
location within fuselage to achieve proper
model balance). The battery may be moved
fore and aft to adjust the final balance of the
model.
82. Mount the propellor EFL9051 on the motor.
The EFL9051 prop simply threads onto the
motor shaft. This part ships with a foam
rubber spinner that may be retained to the
prop using a drop of medium CA glue.
83. Mount wing using two new and fresh #16
rubber bands. Refresh rubber bands before
each flying session.
84. Adjust the balance of your model by moving
the battery or adding a bit of modeling clay
within nose of model. Model should balance
on the spar to 3/8 in. behind main spar.
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 10 of 12

Flight Control Setup
☐ Inspect the wing for any warps that may have
worked their way in when covering, or while
the model was in storage, and remove prior to
flight. DO NOT ATTEMPT FLIGHT IF WING
IS WARPED. Lack of aileron control on
this model will make contending with a
warped wing very difficult. FIX THE WARP.
☐ Center control surface, then set direction, rate
of travel, and dampening (expo).
Rudder servo should be controlled by the
Aileron (roll) channel of your radio as rudder
on this model also controls roll of the aircraft.
Rudder should follow Aileron stick travel (i.e.
moving Aileron stick to right should move
Rudder to right of aircraft). Likewise, left
Aileron stick input will move Rudder left.
Elevator servo will be controlled by Elevator
(pitch) channel of your radio. Pulling back on
the Elevator stick should result in the Elevator
moving up. Likewise, forward stick results in
the Elevator moving down.
The Buzz™100 is designed to be a very
docile flyer, therefore the flight controls are
set up for fairly minimal throws. The Rudder
and Elevator throws should be as follows:
Rudder Travel
Low Rate +/- 15 degrees 30% expo
High Rate +/- 20 degrees 50% expo
Elevator Travel
Low Rate +/- 15 degrees 30% expo
High Rate +/- 20 degrees 50% expo
The above exponential settings apply only to
computer radios.
Pre-Flight
Have an experienced pilot assist you with pre-
flighting your new model. Just like having
someone proof read something you’ve written,
having a second fresh set of eyes to inspect your
final product is often helpful at avoiding disaster.
While not an exhaustive pre-flight check these are
some of the major items that you should consider
using when developing your own pre-flight check
list. Get in the habit of always pre-flighting your
models before each and every flight.
☐ Weight and Balance - Check the
Buzz™100’s balance. The model should
balance on or 3/8 inch behind the main spar.
Use a permanent marker or trim tape to mark
the underside of the left and right wing half at
the CG measurement as given above.
☐ Use your right and left hand index fingers and
suspend the model from below, between the
marked CG measurements. Site from profile
of aircraft against horizon. If the straight edge
of the fuselage side (below the stringers and
in-line with the Horizontal Stabilizer) appears
to hang level with horizon line, then the
Buzz™100 is properly balanced to fly. If not,
move battery within fuselage to obtain proper
balance or add ballast to the nose or tail of
the model.
☐ Check Weather - The Buzz™100’s first flight
should be outdoors and in zero wind
conditions. The Buzz™100 is capable of
flying in winds up to 5-8 mph so long as the
pilot is capable.
☐ Inspect airframe for warps and obvious signs
of wear or damage. Do not fly a damaged or
warped model.
☐ Inspect control surfaces for center, proper
direction of travel, rate of throw, secure
pushrod connections, hinges, and receiver/
servo mounting hardware.
☐ Check wing attach points for damage and/
or wear. Inspect rubber bands, that they are
installed correctly and in good condition to
adequately retain wing.
☐ Inspect battery for full charge. Never begin
a flight with a partially charged battery.
☐ Clear prop! Before applying power to the
model, clear and keep clear of the prop arc.
☐ Range check radio. Follow the radio makers
guidelines for performing a proper range
check.
☐ Check for traffic. Proceed to the flight line
(With your mentor/instructor if you are a
novice pilot) and observe other RC traffic. If
the runway is clear, and no one is in the
pattern to land, loudly announce your
intentions to take off. Remember etiquette
dictates that all aircraft on ground must yield
the runway to those landing.
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 11 of 12

☐ Go flying. Point model into wind (if present)
and steadily advance throttle to full. Use
rudder to correct track while on ground roll.
Within several feet the model should be
airborne. Fly model to a comfortable 1-2
mistake high altitude, reduce throttle to stop
climb, then trim model for straight and level
flight at a comfortable cruise speed
(Depending on speed control responsiveness,
the Buzz™100 typically cruises at just over
1/2 throttle).
☐ Setup for landing. Clearly announce your
intention to land. Make landings into the
wind. With rudder/elevator control and no
ailerons setting up landings in cross-winds
should be avoided until you are comfortable
with the model’s in-flight behavior.
Congratulations!
You’ve completed your first flight(s) on your
Stevens Aero Buzz™100
By now you’ll have noticed that the Buzz™100 is
a very stable airplane. When built straight, and
trimmed for level flight, the Buzz™100 should
always return to wings level from any attitude.
We’ve found the Buzz™100 to capture the
imagination of prospective pilots both young and
old. We never miss an opportunity to allow an on-
looker at the field to get some stick time in with
the Buzz™100. In-fact we’ve found the
Buzz™100 to be a very capable, instructor
assisted, three channel trainer.
If your first flight was a bit more exciting than
you’d have liked and are having problems with
erratic flight performance; please inspect your
equipment and airframe for damage, improper
installation, and/or twists and warps. The most
common mistake is to try and fly with a warped or
twisted wing. With such a fat chord and short
moments a small warp can cause big in-flight
problems. Make certain that your wing is straight
before you fly.
We are committed to improving your build and
flying experience and are constantly refining our
processes, designs, and manuals to reflect
customer feedback. You may correspond with
Stevens AeroModel staff using any of the
following methods:
email: [email protected]
Phone: [phone]
Stevens AeroModel
26405 Judge Orr Rd.
Calhan, CO 80808
Build Instructions
© 2012 Stevens AeroModel all rights reserved.!Page 12 of 12