De Agostini Model Space HUMMER H1 User manual

HUMMER H1: STEP BY STEP ™
1
RADIO CONTROL CAR
BUILD AND DRIVE YOUR OWN
The ultimate 4WD
Radio Control Car
Pack 8 Stages 36-41
™

HUMMER H1: STEP BY STEP ™
2
Editorial and design by Continuo Creative, 39-41 North Road, London N7 9DP
All rights reserved © 2013 De Agostini Publishing USA, 915 Broadway, Suite 609, NEW YORK, NY 10010
NOT SUITABLE FOR CHILDREN UNDER THE AGE OF 14. THIS PRODUCT IS NOT A TOY AND IS NOT DESIGNED OR INTENDED FOR USE IN PLAY. ITEMS MAY VARY FROM THOSE SHOWN.
Photo credits All photographs copyright
© DeAgostini
Visit our website www.model-space.com
Contents
Stage 36
Attaching the 46T gear to the main shaft
Stage 37
The main shaft cup joint
Stage 38
Assembling the main gear
Stage 39
Assembling and mounting the center gear
Stage 40
Installing the disc brake
Stage 41
Fitting the drive shafts
Page 169
Page 172
Page 175
Page 178
Page 184
RADIO CONTROL CAR
Page 189

HUMMER H1: STEP BY STEP ™
169
Main shaft
1680 ball bearing
E7 E-ring
2.5 × 16mm pin
Attaching the 46T gear to the
main shaft
Your parts
Tools and
materials
Needle-nose pliers
Phillips screwdriver
Masking tape (or Scotch tape)
46T gear (Stage 1)
Stage 36

HUMMER H1: STEP BY STEP ™
170
22
11
44
33
66
55
Push the bearing down the shaft so that it rests at the bottom
(see dotted red line).
Slide the 1680 ball bearing over the main shaft. It doesn’t matter
which way the ball bearing goes.
Make sure that the E-ring is positioned so that the rounded
surface is facing upward.
Once the bearing is sitting ush to the bottom of the shaft, t
the E7 E-ring on top of it (see dotted red line).
Prepare the 46T gear you built in Stage 1, and check that the
three screws are fully tightened. If any are loose, simply tighten
them with a screwdriver.
Clip the E-ring into place with needle-nose pliers.

HUMMER H1: STEP BY STEP ™
171
77
88
99
1111
1010
1212
Place the 2.5 × 16mm pin into the hole in
the middle of the main shaft (circled).
Adjust the pin so that equal lengths are
protruding from each side of the shaft.
Making sure the pin doesn’t fall out,
slide the 46T gear over the main shaft,
back side rst.
Press down rmly so that the pin is set into the groove and the
gear is secured.
Push the gear down so that the ends of the pin sit inside
the grooves in the back of the gear (marked with the
dotted red lines).
Wrap masking tape (or Scotch tape) around the tip of the main
shaft, above the gear, to prevent it from falling o.
Assembled parts

HUMMER H1: STEP BY STEP ™
172
Stage 37
Main gear shaft
1680 ball bearing
5 × 4mm set screw
Main shaft cup joint
The main shaft cup joint
Your parts
Tools and
materials
2.5mm Allen key (Stage 7)
Thread-locking agent (or rubber-based
adhesive)
Main shaft assembly (Stage 36)
Sealable plastic bag
Marker pen

HUMMER H1: STEP BY STEP ™
173
33
66
22
55
11
44
77
88
Place the set screw into
the threaded hole in the
side of the main shaft
cup joint (circled). Do this
immediately, before the
thread-locking agent or
adhesive dries.
Place the 1680 ball
bearing over the cup
joint’s circular tip.
Apply a little thread-
locking adhesive to the
set screw (rubber-based
adhesive can also be
used).
Look into the main hole
of the cup joint, and keep
turning the set screw until
the end of the screw is
visible, as shown.
Place the set screw onto
the tip of the Allen key.
Turn the Allen key to feed
the set screw into the side
of the cup joint.
Push the 1680 bearing
onto the tip so that it sits
ush with the body of the
cup joint.
Remove the tape from
the tip of the main shaft
assembly built in Stage 36.

HUMMER H1: STEP BY STEP ™
174
1010
1212
1111
99
Applying pressure with your hands to keep the parts tight to
each other, tighten the set screw rmly with the Allen key.
As you have done in earlier stages, keep any unused parts in a
plastic bag, and mark the stage number for ease of reference.
Push the cup joint down so that it rests against the gear. If it is
dicult to push it, loosen the set screw a little.
Holding the Allen key so that its shorter arm is in the screw and
its longer arm is in your hand will make it easier to tighten, as you
are given greater leverage.
Place the cup joint and bearing assembly onto the tip of the main
shaft, as shown. Make sure that the at portion of the shaft's tip
ts into the corresponding attened section of the inside of the
joint (see arrow).
Assembled parts

HUMMER H1: STEP BY STEP ™
175
Stage 38
Center gear (20T)
Main gear (46T)
1480 ball bearings × 2
3 × 8mm countersunk screws × 3
Assembling the main gear
Your parts
Tools and
materials
Phillips screwdriver
Masking tape
Main gear shaft (Stage 37)
Plastic bag
Marker pen

HUMMER H1: STEP BY STEP ™
176
33
66
22
55
11
44
77
88
From the back, insert the
rst 3 × 8mm countersunk
screw into one of the
holes (see arrow).
Place the rst 1480 ball
bearing into the space
in the center gear, as
arrowed. It does not
matter which way the
bearing goes.
Adjust the center gear so
that the circled holes line
up with those on the 46T
gear, and that it is tting
snugly into place.
Insert the next two 3 ×
8mm countersunk screws.
Again, tighten lightly at
rst: when all three are in
lightly, tighten each fully.
Fit the 20T center gear
into the center of the 46T
main gear.
Tighten with a
screwdriver, but not too
rmly at this stage.
Press the bearing into
place.
Hold the rst bearing in
place from the back, then
place the other bearing
into the corresponding
space at the front of the
center gear.

HUMMER H1: STEP BY STEP ™
177
Store your assembly in a sealable plastic bag.
This is especially important for the parts that
make up the gears, as any dust that gets into
these parts may cause diculties at a later
stage.
1111
1414
1010
1313
99
1212
Place the longer end of
the main gear shaft into
the front of the center and
main gear assembly, as
shown by the arrow.
Check that your assembly
matches the one in the
photo, and that the tape is
holding the parts in place
securely.
Inspect the main gear shaft supplied with Stage 37.
You will see it has a‘collar’ near the center of the
shaft, and that this divides the shaft into a longer
and shorter end.
Pull through from the
back so that the parts are
ush with each other, then
use masking tape to hold
the shaft in place.
Press the bearing into
place, making sure it is
sitting straight.
Slide the shaft into the
gear so that the collar
rests against the 1480 ball
bearing.
Assembled parts

HUMMER H1: STEP BY STEP ™
178
Center gear cover
Center gear mount back
Center gear mount front
Brake cam rod
Brake cam
3 × 18mm self-tapping screws × 4
3 × 3mm set screw
Brake collar
3 × 12mm self-tapping screws × 2
3 × 12mm binding-head screws × 2
Assembling and mounting the
center gear
Your parts
Tools and
materials
Phillips screwdriver
1.5mm Allen key
Thread-locking agent (or rubber-based adhesive)
Center gear (Stage 37)
Main gear assembly (Stage 38)
Sealable plastic bag
Marker pen
Stage 39

HUMMER H1: STEP BY STEP ™
179
11
55
33
77
22
66
44
88
Place the center gear
mount front at on your
work surface, as shown. The
center gear mount front and
back parts look very similar,
so make absolutely sure
you select the front part.
Place one of the 3 × 12mm
binding-head screws into
the rst hole, as shown.
Insert the tip of the main
gear shaft into the hole
in the underside of the
center gear mount back,
following the arrow.
Repeat Steps 1 and 2 for
the other hole, so that both
holes are left with the screw's
indentations, forming the
'tapped' inside (see circles).
Making sure not to dislodge
the main gear, place the
center gear assembly into
the second hole on the
underside of the gear mount,
as shown.
Turn the screw with a
screwdriver, making sure the
screw enters the gear mount
perfectly straight. When you
feel the screw reach the far
side of the mount, carefully
remove the screw, again
making sure to keep the
screw straight.
Remove the masking tape
from the main gear assembly
built in Stage 38.
Adjust until the teeth of the
center gear engage fully
with those of the main gear
(circled). Make sure not to
force the parts, as this may
damage the teeth. Once
engaged, ensure the center
gear is sitting straight.
Next, re-familiarize yourself
with the proportions of the
center gear assembly built in
Stage 37. The left side is thicker
and the right side is thinner.

HUMMER H1: STEP BY STEP ™
180
99
1313
1111
1515
1212
1616
1010
1414
Press the parts rmly
together.
Place the 3 × 3mm set
screw onto the tip of the
Allen key, and apply a little
thread-locking agent (or
rubber-based adhesive).
It is very important that
the parts t together
snugly, so check closely
against the photo to
make sure that your
assembly looks exactly
like this.
Position the gear mount
assembly on your work
surface, as shown, then
carefully place the brake
cam into the arrowed slot,
with the short side of the
cam facing you.
Press the parts rmly
together, making sure
that the ball bearing on
the center gear shaft sits
inside the hole of the gear
mount front, as shown.
Inspect the cam section of
the brake cam (pictured) –
there is one short side and
one long side.
Place the center gear
mount front part over the
tips of each gear assembly
and press together,
following the arrows.
Check against the photo
that you have the parts
aligned correctly.
Hold the brake cam level,
as shown, and carefully
insert the set screw. Make
sure that the set screw is
in perfectly straight, then
tighten by two rotations.

HUMMER H1: STEP BY STEP ™
181
1717
2121
2323
2020
1919
2424
1818
2222
Press the brake cam
into place.
Hold the assembly level,
then lower the center gear
cover onto it, so that the
arrowed holes line up.
Press the brake collar
down so that it rests on
the upper edge of the
gear mount.
Place the brake collar
onto the tip of the brake
cam, with the ange
side facing down.
Next, repeat for the next
three circled holes. Do not
fully tighten the screws at
this stage.
Holding the parts
together, insert the rst
3 × 18mm self-tapping
screw into the circled hole
and tighten lightly.
The short side of the cam
should be visible in the
rectangular hole from the
outside of the gear mount.
From above, check that
the circled screw holes
are correctly aligned.

HUMMER H1: STEP BY STEP ™
182
Store unused parts safely in a sealable plastic bag, and mark the
stage number on it for ease of reference.
2525
2929
2727
3131
2828
2626
3030
Holding the assembly in
your hand, as shown in
the photo, insert two 3 ×
12mm self-tapping screws
into the holes at the top
corners. Again, do not
fully tighten yet.
Use the 1.5mm Allen key to tighten the set
screw tted in Step 14 until it presses down
on the rod, stopping it from moving.
Adjust the rod so that the straight end
sits 1mm away from the side of the raised
section of the gear case, and the looped end
is facing upward, as shown.
Push the brake cam rod through the hole in
the shaft of the brake cam protruding from
the gear cover.
Check that the gears are
able to rotate freely inside
the mount casing by
turning the center gear's
cup joint. It does not
matter if the parts catch a
little bit at this stage.
Once the two 3 × 12mm
screws, and the four 3
× 18mm screws are in,
tighten each fully with a
screwdriver.
Check that the brake cam
is able to rotate by turning
the brake cam rod from
side to side.
Assembled parts

HUMMER H1: STEP BY STEP ™
183

HUMMER H1: STEP BY STEP ™
184
Stage 40
Front torque rod
Brake calipers × 2
Brake pads × 2
Brake disc
Steering posts × 2
4 × 10mm countersunk screws × 2
3 × 10mm self-tapping screw
3 × 10mm self-tapping countersunk screws × 2
4 × 10mm binding-head screws × 2
Installing the disc brake
Your parts
Tools and
materials
Phillips screwdriver
Center gear mount assembly (Stage 39)
Main chassis (Stage 32)
Steering plate (Stage 26)
3 × 12mm binding screws × 2 (Stage 39)

HUMMER H1: STEP BY STEP ™
185
11
55
33
77
22
66
44
88
Inspect the brake pads and
calipers. Lay the parts out,
as shown: note the shape
and orientation of each. The
holes on the left and right
side are dierent shapes
(see red circles). Ignore
the pattern printed on the
brake pads.
Place the second brake pad
over the brake disc, so that
its holes line up with those
of the rst.
Next, place the
corresponding brake pad
over the caliper, making sure
the holes line up.
Place the rst 3 × 12mm
binding-head screw
provided in Stage 39 through
the holes on the right of
the brake pads and calipers,
and into the hole in the gear
mount beneath.
Holding the center gear
mount as shown, place the
rst brake caliper so that
its two holes line up with
those on the casing of the
mount (arrows). Make sure
you have the orientation
of the caliper positioned
correctly, as shown in the
photo.
Fit the brake disc over the
protruding cup joint.
Add the second brake
caliper.
Holding the parts in place,
gently tighten the screw, but
stop before the head touches
the outermost caliper.

HUMMER H1: STEP BY STEP ™
186
99
1313
1111
1515
1212
1616
1010
1414
Tighten the second 3
× 12mm binding-head
screw (Stage 39) into the
wider hole on the left side
of the pads and calipers,
and tighten lightly.
Place one of the steering
posts into the hole in the
center of the right servo
saver, from the side that
houses the spring.
Pull the servo savers apart
gently and place the
assembly directly behind
the front bulkhead from
the rear.
Prepare the steering plate and servo saver assembly built in Stage
26. The steering plate is in the middle, with the two servo savers
to the left and right.
The disc brake is
complete, and should
look like this.
Insert the other
steering post into the
hole in the left servo
saver from the same
side as you did the rst.
From the side, your brake
pads and calipers should
look like this. Turn the
screws until there is a gap
of about 1mm between
the outermost caliper and
the screw head.
Push the steering post
through to the back of the
servo saver.