Mayhem RTR Manual

Transcription

Mayhem RTR Manual

Sportwerks Mayhem RTR
Assembly and Operation Manual
Specifications:
Length:
Width:
Track:
Wheelbase:
Weight:
Gear ratio:
19.4 in (492mm)
12.2 in (310mm)
Front - Adjustable 10.6–12.2 in (270–310mm)
Rear - 12.2 in (310mm)
Adjustable 12.8–13.0 in (325–330mm)
7.6 lb (3450 g)
10.86:1
Introduction
Thanks for your purchase. If you’re new
to off-road gas, hang on! You’re about to
discover just how much fun trying to tame an
overpowered 1/8-scale monster can be.
If you’re already into racing, the Mayhem™
RTR will have you on the track in minutes
with a competitive buggy of the highest
caliber.
The Mayhem RTR is based on the racewinning Mayhem Pro. It is professionally built
and assembled by racers. The shocks and
differentials come pre-filled with the correct
lubes for optimum handling and performance.
The Mayhem RTR comes assembled with
radio, engine and exhaust installed. All that’s
needed to make it race-ready is to install
a 6-cell car pack in the starter and12 “AA”
batteries in the transmitter and receiver.
The front section of this manual features a
6-step quick start guide that will take you from
box to race-ready in about 15 minutes. Also included are exploded view isometric drawings with part numbers and parts listings, helpful when disassembling
your Mayhem for repair or maintenance. Setup sheets are provided in the back—one with a recommended baseline setup and a blank version that allows
you to record your own settings. The last page includes helpful information and specifications for your Mayhem.
Good luck, have fun and see ya at the track!
SportWerks Product Development Team
Page 2
Table of Contents
Introduction..............................................................................2
Table of Contents ....................................................................3
Required Equipment................................................................4
Recommended Tools...............................................................5
Quick Start...............................................................................6
Engine Starting and Break-in ..................................................8
The Sportwerks Carburetor.....................................................9
Starting the Engine..................................................................10
Adjusting the Carburetor .........................................................11
After Run Engine Maintainance ..............................................12
Brake Linkage Setup ...............................................................13
Center Differential....................................................................14
Front/Rear Differential .............................................................15
Front and Rear Shocks ...........................................................16
Steering Bellcrank ...................................................................17
Front Suspension ....................................................................18
Front Gearbox Mount ..............................................................19
Center Driveshaft - Front.........................................................20
Rear Suspension.....................................................................21
Rear Gearbox Mount...............................................................22
Center Driveshaft - Rear .........................................................23
Chassis....................................................................................24
Radio Tray Assembly ...............................................................25
Engine/Clutch/Air Filter............................................................26
Fuel Tank .................................................................................27
Wheel and Tire Assembly .......................................................28
Setup Sheet.............................................................................36
Setup Sheet - Stock Settings ..................................................37
Specifications and Other Information ......................................38
Tuning Tips ..............................................................................39
Page 3
Required Equipment
Additional equipment required for
assembly (not included)
• 6-cell 7.2 volt car pack
(DYN1000 recommended)
• 12 “AA” Alkaline batteries
Additional item needed to operate
•
•
•
•
Glow igniter
Air filter oil
Car fuel
Fuel bottle
Note: Dynamite® offers a starter pack that
includes the above items plus it includes
extra glow plugs, a plug wrench and fuel line.
(DYNSTART2).
Page 4
Recommended Tools
While the Mayhem™ comes assembled and no
tools are required, you’ll find the following tools
helpful when maintaining your Mayhem:
Recommended Tools
•
•
•
•
•
•
•
•
Page 5
1.5mm hex wrench
2mm hex wrench
2.5mm hex wrench
3mm hex wrench
17mm open end wrench or adjustable wrench
Small flat screwdriver
#1 Phillips screwdriver
Needle-nose pliers
Quick Start
Step #1
Step #2
Step #3
Install 8 “AA” batteries in the transmitter noting
the proper direction of each cell.
Open the radio box and Install 4 “AA” batteries
in the battery holder noting the proper direction
of each cell.
Insert the antenna tube in the top of the radio
box. Feed the receiver antenna through the
tube until several inches extend out the top.
Install the antenna tip.
Page 6
Step #4
Step #5
Step #6
Install a charged 6-cell 7.2-volt battery in the
starter and attach the plug.
Turn on the transmitter and then the receiver.
Check to make sure that the servos are operating
correctly and that the carburetor closes when the
throttle trigger is released.
Apply air filter oil (not included) and spread
the oil uniformly onto the air filter allowing it to
saturate the foam element.
Congratulations! Your Mayhem™ is
ready to rip!
Quick Start Guide
Page 7
Engine Starting and Break-in
Your First Runs
If this is your first gas car, we highly recommend
that you have an experienced gas car driver
help during the first startups and runs. He will
be able help you properly adjust your engine for
break-in and then tune your engine for reliable
performance.
Before attempting to start your new buggy, be
sure to read this section and fully understand
each step before starting your engine. Pay
particular attention to the needle settings
recommended for starting and to the break-in
procedures suggested below. Using the Proper
Fuel and Glow Plug
Fuel and Glow Plug
Note: Using the proper fuel and glow plug is
vital in achieving reliable performance and is
a must for long engine life. You must use fuel
and glow plugs that are specifically designed
for model car use.
Never use any type of model airplane glow fuel!
We recommend a high-quality car fuel containing
20% nitro methane (Blue Thunder 20% Sport fuel
is recommended). A glow plug is included that
is ideal for breaking-in your new engine. During
the break-in process, it’s not uncommon to go
through one or two glow plugs, as microscopic
particles of metal (from the cylinder/piston
wearing in) bond themselves to the plug element
causing glow plug failure. We recommend the
Sportwerks #3 Glow Plug (SWK8058) as the best
replacement glow plug for this engine.
Page 8
Air Filter
A clean, properly oiled air filter is a must to keep
dirt out of the engine. Using the included air filter
oil, spread the oil uniformly onto the air filter
allowing it to saturate the foam element.
The Sportwerks Carburetor
The Sportwerks .26 engine features a slide-valve
carburetor and includes three inserts of various
diameters. These carburetor inserts are used to
alter the power curve of the engine. The three
diameters included have the following effect:
6.5mm
7.5mm
9mm
– Gives smooth controllable
acceleration; offers best fuel
mileage; best-used for slick tracks/
surfaces or beginning
gas drivers.
– Develops good mid-range power;
easier to control than the 9mm
insert; best for medium traction,
average-sized tracks/areas.
– Offers explosive, sometimes difficult
to control acceleration; uses the
most fuel; used only for high traction,
large track/open areas; for expert
drivers only.
Setting the needles
While the needles are preset at the factory, it’s a
good idea to verify that the needles are properly
set slightly rich for break-in. Following are the
recommended starting settings:
High-Speed Needle: 3 1/2 turns out
(counterclockwise) from closed
Low-Speed Needle: 2 turns out
(counterclockwise) from closed.
Note: When checking the adjustment of the
low-speed needle, it is crucial that the throttle
slide is closed completely and that you do
not over-tighten the needles. When you feel
resistance, immediately stop turning. This is
the closed position.
High-Speed
Needle Valve
Lean
Carb Insert
Low-Speed
Needle Valve
Idle Screw
Lean
Page 9
Starting Your Engine For The First
Time
Break-in
The first startups and the first several minutes
that your engine is running is the most
critical time of it’s life and, in many ways, dictates
how well it will perform and how
long it will last.
During the first runs, when the engine starts,
the exhaust should emit blue/white smoke,
indicating that the engine is rich (a good thing
during break-in). During the first tank of fuel,
you may wish to set a higher than normal idle
speed in order to keep the engine from stalling.
Drive your buggy while “blipping” the throttle
and avoid operating the engine at full throttle
for more than 2–3 seconds at a time. Run the
entire first two tanks of fuel in this manner. After
the first two tanks of fuel, begin leaning out the
high-speed needle valve 1/8 turn at a time. It
generally takes about 5 or 6 tanks of fuel before
you’d want to start tuning for “maximum” power.
Patience during break-in will be rewarded with an
engine that performs reliably and to its maximum
power potential. Remember, glow plug failure is
a common occurrence when breaking in a new
engine. To test your plug, let the engine idle at
a properly adjusted low-speed needle setting
with the glow igniter attached. Then, remove
the igniter. If you hear no appreciable change in
engine RPM, the plug is still good. If the engine
loads up and the RPM’s decrease, it’s time to
replace the glow plug.
Starting the Engine
Step 1
Fill the tank with fuel
Step 2
Turn on the transmitter and receiver and confirm
that the radio system is working properly.
Step 3
Attach the glow driver to the glow plug.
Step 4
Fully insert the electric start shaft into the back
of the engine. Press the start button for
ten seconds then stop. The engine should turn
over but likely won’t yet start. Continue these
ten second starting attempts several times until
the engine starts.
Note: Should the engine not turn over when
the electric starter is applied, the engine
may be flooded (hydro-locked). Excess fuel
in the combustion chamber can prevent the
piston from traveling through its full range
of compression, effectively “locking up” the
engine. Should this occur, remove the glow
igniter from the plug and, using a glow plug
wrench (DYN2510), remove the glow plug
and turn the model upside down. Give the
starter a few short blips to clear the fuel from
the combustion chamber then re-install the
glow plug and try again.
Page 10
You may find it necessary to “blip” the throttle
on the transmitter (applying throttle on/off) while
trying to start the engine, as new engines are
more difficult to start due to the tight piston/
cylinder fit.
Never start an engine above 1⁄4 throttle or
damage to your engine could occur!
Adjusting the Carburetor
Tuning your Engine
Fine-Tuning Your Engine
Tuning the Low-Speed Needle
When tuning the needle valves for maximum
performance, adjust them in small increments,
1⁄16 turn at a time. An engine should not be run
too lean; doing so severely shortens the life of
the engine. When an engine is set too lean, it will
run very strong at first but will soon begin to sag
and hesitate or stall when accelerating. The best
way to tune an engine is by using an infrared
temperature gauge, but you can also use water
to check the head temperature. (Refer to “Fine
Tuning Your Engine”)
As you gain experience, you’ll be able to tune
your engine based on the engine’s sound and
feel during acceleration and at full throttle. Until
you’ve developed this skill, we recommend the
following method of engine tuning.
Start your engine and drive your buggy
aggressively for about two minutes.
Place a drop of water on the cylinder head.
If the water sizzles away (evaporates
immediately), the needle setting is too lean.
A correct needle setting will result in the
water evaporating slowly, in about 5–10 seconds.
If the water does not evaporate, the needle
setting is too rich. Lean the high-speed needle
1/8 of a turn and run the engine again, adjusting
the needle setting to get the desired evaporation
rate of 5–10 seconds. Check the temperature
each time you change the needle mixture.
Do not let the engine overheat, as this will
damage the engine!
The low-speed needle (also referred to as
the idle mixture or idle needle) should be set
after you’re satisfied with the high-speed needle
setting. After achieving the engine’s proper
operating temperature, reduce the engine throttle
to idle for about 15 seconds. Now pinch the fuel
line with your fingers
close to the carb fuel inlet nipple while carefully
listening to the engine RPM. If the engine dies
immediately without an increase in RPM, the lowspeed needle is set too lean.
If the RPM ’s increase dramatically and then the
engine dies, the setting is too rich.
The ideal setting results in the RPM ’s increasing
a slight amount (about 200 RPM’s) after pinching
the fuel line before dying.
Page 11
Setting the Idle RPM
The last setting to be made is the idle RPM.
Turning the idle stop screw clockwise increases
the idle speed; whereas turning the screw
counterclockwise will make the engine idle at a
lower RPM. Ideally, the engine should idle just
fast enough to give a reliable idle but not engage
the clutch and, of course, never flame out.
After Run Engine Maintainance
After you’re finished racing for the day, it’s
important to empty the fuel tanks and run the
remaining fuel from the engine. Continue to try to
start the engine for several seconds after it will
no longer fire to ensure that all fuel is out of the
engine. Put several drops of after run oil in the
carburetor and turn the engine over on the starter
box for several seconds to coat the internal
engine parts with after run oil.
Clean the air filter regularly, using warm soapy
water then allowing it to air dry before applying
air filter oil. Keeping your air filter clean and oiled
is vital to the life of your engine.
Page 12
Brake Linkage Setup
Although the break linkages are pre-set at he
factory, it may be necessary to adjust them
if you take the vehicle apart for cleaning or
maintenance. The following covers the installation
and adjustment of the linkages in such instances.
Step #3
Step #7
Be sure the ball links are snapped onto the front
and rear brake and on the carburetor.
With the throttle at neutral, pull the front (silver
knob) brake linkage through the molded pivot
such that the front brakes are slightly applied.
Loosen the setscrew on the silver adjusting knob
and slide it into position such that it just contacts
the molded pivot and retighten the setscrew.
Note: It may be necessary to adjust the
position of the throttle return spring to allow
the ball link to snap on the ball.
Step #4
Adjust the position of the return spring collar
until the correct tension is achieved. With the
throttle at neutral, the spring should just close the
carburetor barrel with light tension.
Step #5
Loosen the setscrew in the blue knurled knob
and slide the knob such that it just contacts the
molded pivot on the arm; retighten the setscrew.
Step #6
Step #1
Turn on the radio system and adjust the throttle
trim to the desired neutral position.
Step #2
Install the arm with attached linkage on
the servo adapter such that the brake linkage
will be parallel to the arm with the brake ball
links attached.
Adjust the full throttle position with the
programming in your transmitter such that the
carburetor is full open just as the trigger reaches
the full throttle position. By rotating the blue
throttle knob, you can now precisely adjust the
throttle dead band (the amount the throttle moves
before the carburetor barrel actually opens)
without disturbing the spring preload settings.
Page 13
Step #8
With the throttle at neutral, pull the rear (red
knob) brake linkage through the molded pivot
such that the rear brakes are slightly applied.
Loosen the setscrew on the red adjusting knob
and slide it into position such that it just contacts
the molded pivot and retighten the setscrew.
Step #9
Cut off the excess lengths of linkage to clear the
body.
By rotating the silver adjusting knob, the front
brakes can be accurately adjusted; rotating the
red knob will affect the rear brake adjustment.
Initial Brake Adjustment
With the radio on and the throttle trim at neutral,
adjust the front brake using the silver adjusting
knob until it just starts to apply pressure to the
front tires. Now back the front brake off one turn.
Adjust the rear brake using the red adjusting
knob until it just starts to apply slight pressure
to the rear tires then back the rear brake off 1/2
turn. These are the neutral starting settings for
the front and rear brakes.
Center Differential
96
2
89
20
18
156
37
89
93
37
93
90
79
91
93
96
57
93
81
82
41
3
50
4
86
85
83
84
84
50
82
84
20
88
91
89
57
89
79
89
18
90
Page 14
Front/Rear Differential
78
87
57
84
88
83
86
84
85
83
82
84
50
84
83
84
50
57
83
82
80
4
78
Page 15
Front and Rear Shocks
63
73
73
64
67
26
73
72
33
34
63
75
73
64
73
67
74
72
74
73
67
72
74
74
74
73
73
70
74
73
26
34
67
75
74
73
68
73
66
74
74
65
77
73
71
72
73
33
72
71
72
72
73
73
45
72
73
71
73
44
72
71
73
74
72
74
72
74
74
69
76
74
72
74
72
74
74
75
73
70
74
73
75
45
44
75
Front Shock
Rear Shock
Page 16
75
Steering Bellcrank
3
95
95
3
95
95
95
95
34
36
95
95
34
95
95
95
95
95
13
95
34
95
13
95
45
52
51
45
95
45
56
13
95
45
95
52
45
95
95
56
95
Page 17
45
Front Suspension
111
47
110
167
35
111
116
28
B
167
24
48
130
109
6
25
13
106
107
107
57
23
54
118
57
34
50 128
106
127
107
107
40
127
23
Page 18
28
Front Gearbox Mount
37
5
115
37
99
3
8
174
3
34
123
19
173
23
61
112
125
62
123
18
3
24
18
108
17
112
133
37 133
3
45 133
133
44 133
38 133
45 133
44 133
Page 19
112
Center Driveshaft - Front
40
14
131
91
129
91
57
54
57
94
91
Page 20
Rear Suspension
45
44
53
45
40
127
19
111
57
54
128
34
119
57
111
130
176
28
6
28
120
167
46
35
28
24
117
48
167
28
Page 21
Rear Gearbox Mount
26
8
8
37 134
44 134
134
3
45 134
18
137
38 134
45 134
134
6
44 134
136
136
121
136
62
6
61
34
164
26
18
19
99
136
17
4
4
44
24
125
121
121
24
123
34
18
34
Page 22
123
Center Driveshaft - Rear
14
91
94
57
54
57
40
129
91
91
131
Page 23
Chassis
34
105
104
2
152
159
39
153
2
9
7
10
34
3
105
11
4
8
4
104
3
8
3
3
10
Page 24
9
Radio Tray Assembly
98
37
96
96
96
96
96
98
30
97
37
96
96
37
96
97
2
96
96
96
96
96
96
4
96
96
96
37
96
100
22
96
23
31
A
96
96
23
97
30
97
12
95
97
27
23
45
22
97
34
95
24
2
23
23
102
97
99
99
99
A
Page 25
157
95
51
Engine/Clutch/Air Filter
148
149
149
149
154
150
32 149
151
155
17
139
138
141
142
175
140
143 144 145 146
55
55
26
140
15
Page 26
149
Fuel Tank
27 135
49
135
135
135
1
135
135
135
23
71
135
22 135
71
43
Page 27
43
Wheel and Tire Assembly
126
60
60
59
Page 28
Key # Stock#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
SWK2022
SWK2024
SWK2026
SWK2028
SWK2032
SWK2036
SWK2054
SWK2056
SWK2062
SWK2064
SWK2074
SWK2087
SWK2089
SWK2106
SWK2122
SWK2124
SWK2128
SWK2130
SWK2139
SWK2141
SWK2222
SWK2224
SWK2226
SWK2232
SWK2254
SWK2282
27
28
29
30
31
32
SWK2290
SWK2292
SWK2296
SWK2306
SWK2311
SWK2324
Qty
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
2
8
8
8
8
8
8
8
Description
Key # Stock#
3mm x 6mm Flathead Screw
5mm x 8mm Engine Mount Screw
6.8mm x 11mm Ball Stud
6.8mm x 14mm Ball Stud
2.5mm x 10mm Socket Head Cap Screw
3mm x 6mm Socket Head Cap Screw
3mm x 6mm Button Head Screw
Wing buttons
3mm Washers
1/8 E-Clips
3mm E-Clips
7mm Snap Ring
2mm x 10mm Phillips Head Screw
33
34
35
36
37
38
39
40
41
42
43
SWK2380
SWK2382
SWK2384
SWK2392
SWK2419
SWK2430
SWK2440
SWK2450
SWK2460
SWK2132
SWK2465
Qty
8
8
8
8
8
8
8
8
4
8
1
1
2
44
SWK2470
6
2
2
4
45
46
47
48
49
50
51
Page 29
SWK2480
SWK2500
SWK2505
SWK2510
SWK2515
SWK2520
SWK2550
4
2
4
2
4
2
2
2
2
4
2
2
1
Description
2.6mm Lock Nuts
3mm Lock Nuts
4mm Lock Nuts
3mm Nuts
3mm x 3mm Set Screw
3mm x 14mm Set Screw
4mm x 4mm Set Screw
5mm x 4mm Set Screw
Threaded Chassis Inserts
3mm X 16mm Socket Head Cap Screw
Chassis Stand-off Bag
Front fuel tank standoff
Rear fuel tank standoff
Radio tray standoff
Pivot Ball Bag
6.8mm pivot ball
8.8mm flange pivot ball
8.8mm pivot ball
6.8mm flanged pivot ball
Rod End Bag
6.8mm short rod end
6.8mm medium rod end
6.8mm long rod end
8.8mm rod end
6.8mm shock rod end
(Rear) Outer Susp. Hinge Pins 50mm
(Front) Upper Susp. Hinge Pins 56mm
Inner Susp. Hinge Pins 70mm
Hinge Pins for radio box, fuel tank lid
Pin Bag
Wheel hub pins
Outdrive pins
CVD coupler pins
Steering Link / Turnbuckle 3x36mm
Key # Stock#
52
53
54
55
56
57
58
59
60
SWK2560
SWK2570
SWK2600
SWK2620
SWK2640
SWK2660
SWK2701
SWK2740
SWK2840
61
62
63
64
65
66
67
SWK3000
SWK3002
SWK3004
SWK3006
SWK3008
SWK3010
SWK3012
68
69
70
71
72
SWK3016
SWK3018
SWK3020
SWK3022
SWK3024
Qty
2
2
4
2
4
4
1
2
2
2
4
4
2
4
2
2
2
2
2
2
4
4
2
2
4
2
2
2
Description
Key # Stock#
Tie Rod / Turnbuckle 4x50mm
Camber Link / Turnbuckle 5x60mm
Bearing Crush Sleeve
Clutch Bearings 5x10x4mm
Rubber Sealed Bearings 6x10x3mm
Rubber Sealed Bearings 8x16x5mm
Mayhem Buggy Body RTR (Blue)
Dish Wheels, White
Buggy Tires/Inserts
1/8 tire foam inserts
1/8 buggy tires
Shock Standoff Nuts
Shock Bushings
Shock Caps
Shock Bladders
Front Shock Body
Rear Shock Body
Shock Adjustment Collar
Adjustment collar O-ring
Front Shock Shaft 54mm
Rear Shock Shaft 64mm
Shock Piston 2-hole 1.2mm
Shock O-Ring
Shock Rebuild Kit
Washer 2.5x5mm
Shock O-ring
Shock shaft bushing 3.4mm
Shock shaft bushing 1mm
Snap ring 7mm
73
Qty
SWK3026
2
2
2
2
4
2
2
2
2
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
Page 30
Description
Front Shock Set
Shock bladder
Washer 2.5x5mm
Adjustment collar
Shock O-ring
7mm snap ring
Shock cap
1mm spring clip
2mm spring clip
3mm spring clip
4mm spring clip
5mm spring clip
6.8mm shock rod end
Upper spring retainer
Lower spring retainer
Shock eyelet
3mm washer
3mm lock nut
Shock adjustment collar
2.6mm lock nut
Shock piston 2-hole 1.2mm
Front shock shaft 54mm
Front shock body
Front buggy spring, black
Key # Stock#
74
Qty
SWK3028
2
2
2
2
4
2
2
2
2
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
Description
Key # Stock#
Rear Shock Set
Shock bladder
Washer 2.5x5mm
Adjustment collar
Shock O-ring
7mm snap ring
Shock cap
1mm spring clip
2mm spring clip
3mm spring clip
4mm spring clip
5mm spring clip
6.8mm shock rod end
Shock eyelet
3mm washer
3mm lock nut
Shock adjustment collar
2.6mm lock nut
Shock piston 2-hole 1.2mm
Rear shock shaft 64mm
Rear shock body
Rear buggy spring
75
76
77
78
79
80
81
82
83
84
SWK3040
SWK3050
SWK3060
SWK3070
SWK3072
SWK3074
SWK3076
SWK3078
SWK3080
SWK3082
85
86
87
88
SWK3086
SWK3088
SWK3090
SWK3092
89
SWK3094
90
SWK3096
Page 31
Qty
4
4
4
4
4
4
4
4
4
2
2
2
2
1
1
2
4
2
4
1
2
2
2
2
4
4
2
Description
Shock Molded Parts Bag
1mm spring clip
2mm spring clip
3mm spring clip
4mm spring clip
5mm spring clip
Upper shock eyelet
Shock rod end 6.8mm
Front Buggy Springs
Rear Buggy Springs
F/R Diff Output Yoke
Center Diff Output Yoke
43T Diff Gear
46T Steel Spur Gear
Differential O-Rings
Spider Gear Shims .25mm
Diff Gear Bag
Bevel gears
Spider gears
Differential Gasket
Differential Cross Pins
Differential Shims
Differential Case
Bearing mount
Brake Pads
Brake pad spacers
Brake Discs
Key # Stock#
91
92
93
94
95
Qty
SWK3098
SWK3102
SWK3104
SWK3106
SWK3108
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
4
1
1
1
1
2
1
1
3
3
1
2
2
1
1
1
Description
Diff Housing Bag
Lower diff housing
Upper diff housing
Bearing support
Center diff housing (upper)
Center diff housing (lower)
Brake stand-off
Center Diff Support Plate (RTR)
Brake Cam Bag
Rear brake cam
Front brake cam
Brake post bushings
13T Differential Pinion
Steering Servo Saver Bag
Servo horn adapter 23T
Steering servo arm
Steering bellcrank bushings
Upper servo saver
Lower servo saver
Steering bellcrank left
Throttle ball cup
Bellcrank post
Servo saver spring retainer
Servo saver spring retainer
3mm x14mm ball stud
3mm lock nut
3mm nut
Drag link bushing
3mm x 10mm flathead screw
Steering drag link
Bellcrank shaft
3mm x 8mm socket head cap screw
Key # Stock#
Qty
1
96
SWK3110
2
1
1
1
1
1
1
1
1
3
1
1
1
1
4
3
2
1
1
2
97
SWK3112
1
1
1
1
2
6
1
Page 32
Description
Countersunk washer
Throttle Linkage Bag
Threaded servo arm guide pivot
Countersunk servo arm guide pivot
Throttle/brake servo arm
Linkage adjuster-red
Linkage adjuster-blue
Linkage adjuster-silver
Linkage wire
Locking collar
Linkage spring
Silicone tubing-rear brake
Silicone tubing-front brake
3mm x 3mm set screw
Throttle ball cup
Ballrod linkage
3mm x 8mm socket head cap screw
Countersunk washer
Servo arm bushing
Radio Box Bag
Radio box bottom
Radio box center
Radio box top
Hinge pin
1mm E-clip
2mm x 10mm phillips head screw
Key # Stock#
98
Qty
SWK3114
1
1
99
100
104
SWK3116
SWK3118
SWK3126
2
2
1
1
1
2
1
1
1
105
SWK3128
1
1
106
SWK3130
4
4
4
4
8
107
108
109
110
SWK3132
SWK3134
SWK3136
SWK3137
4
4
2
2
2
Description
Key # Stock#
Antenna Bag
Antenna
Antenna cap
Mount Bag
Servo mounting pads
Stand-up servo mounting pads
Front body mount
Rear body mount
Transponder mount
Steering servo mounts
Switch Cover
Bumper Bag
Front bumper
Rear bumper
Chassis Mud Guard Bag
Mud guard left
Mud guard right
Pillow Ball Assembly Bag
Pillow ball 14.6mm
Pillow ball insert
Pillow ball retainer plate
Pillow ball cap
3mm x 10mm button head screw
Retainer Plate/ Ballcap Bag
Pillow Ball Retainer Plate
Pillow ball cap
Hinge Pin Bushings
Front Lower Suspension Arms
Front Upper Suspension Arms
111
Qty
SWK3138
2
2
2
2
4
112
115
116
SWK3140
SWK3146
SWK3148
1
1
1
1
1
117
SWK3150
1
1
118
SWK3152
1
1
119
120
123
124
121
SWK3154
SWK3156
SWK3160
SWK3162
SWK3158
1
1
2
1
1
1
125
SWK3164
1
1
Page 33
Description
Caster/Camber Shim Bag
Upper hinge pin bushing
Camber shim 1mm
Camber shim 1.5mm
Caster shim 2mm
Caster shim 2.5mm
Front Bulkhead Bag
Front bulkhead, F support
Front bulkhead, R support
Upper Hinge Pin Support
Front Inner Suspension Mount Bag
Front left carrier block
Front right carrier block
Rear Inner Suspension Mount Bag
Rear left carrier block
Rear right carrier block
Steering Knuckle Bag
Front left steering knuckle
Front right steering knuckle
Rear Hub Bag
Left rear hub
Right rear hub
Rear Suspension Arms
Chassis Stiffners/Mounts (RTR)
Rear Shock Tower (RTR)
Rear Bulkhead Bag
Rear bulkhead, F support
Rear bulkhead, R support
Bulkhead Brace Bag
Front bulkhead brace
Rear bulkhead brace
Key # Stock#
126
127
128
129
130
131
133
SWK3168
SWK3170
SWK3172
SWK3173
SWK3174
SWK3175
SWK3180
Qty
2
2
2
2
2
4
2
2
4
1
2
4
2
134
SWK3182
2
2
4
1
2
4
2
Description
Key # Stock#
17mm Wheel Nut
Wheel Hub
Wheel Hub Pin
Center Drive Cup
Front/Rear Buggy CVD (pr)
Dogbone Pin
Front Sway Bar Bag
Sway bar pivot ball
3mm x 14mm set screw
3mm x 3mm set screw
Front sway bar
Sway bar mounts
6.8mm short rod end
6.8mm pivot balls
Rear Sway Bar Bag
Sway bar pivot ball
3mm x 14mm set screw
3mm x 3mm set screw
Rear sway bar
Sway bar mounts
6.8mm short rod end
6.8mm pivot balls
135
Qty
SWK3184
1
1
1
1
1
1
1
2
1
1
1
2
136
137
138
139
140
141
142
143
144
145
146
148
Page 34
SWK3186
SWK3188
SWK3190
SWK3192
SWK3194
SWK3196
SWK3198
SWK3212
SWK3213
SWK3214
SWK3215
SWK3230
2
2
2
1
1
1
1
4
3
3
1
1
1
1
1
Description
Fuel Tank Assembly
Lower tank half
Upper tank half
Fuel tank lid
Fuel tank baffle
Fuel tank internals
3mm x 6mm flathead screw
Hinge pin (radio box, fuel tank lid)
1mm E-clip
Cap spring
Fuel tank cap gasket
Splash guard
3mm x 8mm button head screw
Wing Mount Bag
Wing strut
Wing brace
Wing mount
Wing (white)
Flywheel
Collet
Clutch Nut Bag
Clutch nut
Shims
Clutch Springs
Clutch Shoes
12T Clutch Bell
13T Clutch Bell
14T Clutch Bell
15T Clutch Bell
Air Cleaner Boot
Key # Stock#
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
167
173
174
175
176
Qty
SWK3232
SWK3234
SWK3236
SWK3238
SWK3240
SWK3242
SWK3250
SWK9102
SWK9120
SWK9122
SWK9124
SWK9133
SWK9142
SWK9144
SWK9160
SWK9162
SWK9108
SWK3133
SWK3142
SWK3144
SWK2227
SWK2441
1
1
1
2
1
3
1
1
1
1
1
1
3
1
1
3
1
1
1
2
1
1
1
1
1
1
2
8
Description
Key # Stock#
Air Filter Bag
Air filter top
Air filter bottom
Foam filter
Tie wrap
Manifold/Pipe Springs
Manifold Adapter
Tuned Pipe Mounting Wire
Tuned Pipe Mount
Manifold
Tuned Pipe
Pro Center Diff Support Plate
Pro Servo Tray Standoff
Pro Servo Tray
Pro Main Chassis
Pro Pin Brace Bag
Pro Hinge pin brace
Pro Rear hinge pin brace
Pro Front Shock Tower
Pro Top Plate
Pro Chassis Stiffener/Mount Bag
Pro Chassis stiffener mount
Pro Front chassis stiffener
Pro Rear chassis stiffener
Pro Rear Shock Tower
Pro Steering Drag Link
Pin Brace Bag (RTR)
Front Shock Tower (RTR)
Top Plate (RTR)
Engine Mounts (RTR)
4mm x 8mm Set Screw
SWK3260
SWK3261
Page 35
Qty
1
1
Description
Electric Starter
Electric Starter Backplate Assembly (.21-.26)
Setup Sheet
Gearing:
Driver
Date
Lap times
Front Shocks:
Clutch Bell
Pistons
Spur Gear
Oil
Clutch Shoe Position
Springs
Track Conditions:
Lower mounting position on arm:
In
Out
In
Mid
Differential Fluids:
Traction:
Slick
Medium
High
Surface:
Smooth
Bumpy
Rough
Front
Layout:
Tight
Medium
Open
Center
Rear
Front Suspension:
Engine:
Track/Width
Type
Camber Angle
Caster Position
Forward
Rearward
Toe In
Plug
Deck Clearance
Droop
Oil
Temperature
Ground Clearance
Springs
Comments
Rear Suspension:
Tires:
Track/Width
Front
Camber Angle
Type
Toe In
Compound
Droop
Liner
Roll Bar
Rear
Ground Clearance
Hub Position
Pistons
Fuel
Roll Bar
Hub roll Center
Rear Shocks:
Exhaust
Type
Upper
Front
Lower
Mid
Rear
Compound
Liner
Page 36
Out
Setup Sheet - Stock Settings
Gearing:
Driver
Track
Lap times
Front Shocks:
Clutch Bell
14
Pistons
2 hole - 1.5mm (stock)
Spur Gear
46
Oil
30 wt
Clutch Shoe Position
Trailing
Springs
Black
Track Conditions:
Slick
Medium
High
Surface:
Smooth
Bumpy
Rough
Front
5000
Layout:
Tight
Medium
Open
Center
5000
Rear
1000
Engine:
Track/Width
12.1 in
Camber Angle
1.5 degrees
Caster Position
Forward
Rearward
Toe In
-1 degree
Droop
Not used
Roll Bar
Stock
Ground Clearance
Drive shafts level
Type
Sportwerks .26
Plug
SWK8058 #3 Glowplug
Deck Clearance
.053
Exhaust
Fuel
Rear Suspension:
Blue Thunder 20% (DYN2270)
Temperature
Comments
12.2 in
Camber Angle
1.5 degrees
Type
Toe In
3 degrees (stock)
Compound
Droop
Not used
Liner
Roll Bar
Stock
Ground Clearance
Arms level
Hub Position
Upper
Front
Front
Lower
Mid
SWK blocks (stock)
Stock
Rear
Type
Rear
SWK blocks (stock)
Compound
Liner
Rear Shocks:
Pistons
2 hole - 1.5mm (stock)
Oil
30 wt
Springs
Black
Tires:
Track/Width
Hub roll Center
Out
Differential Fluids:
Traction:
Front Suspension:
In
Stock
Page 37
In
Mid
Out
Specifications and Other Information
Brake Knob - Color Code
Red - Rear brake
Silver - Front brake
Blue - Throttle
The Mayhem Comes Filled with the Following Fluids
Shocks - 30 wt. oil front and rear
Differentials - Center - 5000 wt
Front - 5000 wt
Rear - 1000 wt
Specifications - Chassis
Overall Length - 492mm / 19.4 in
Width - 310mm / 12.2 in
Wheelbase - Adjustable 325mm–330mm / 12.8–13.0 in
Caster angle - Adjustable 17–24 degrees
Fuel tank capacity - 126cc
Internal gear ratio - 3.31 to 1
Pinion gear included - 14 tooth
Spur gear included - 46 tooth
Diff pinion gear - 13 tooth
Diff ring gear - 43 tooth
Shock pistons - 2 hole / 1.5mm diameter holes
Wheel hub size - 17mm
Ball bearings - Transmission - 8x16x5mm
Clutch - 5x10x4mm
Steering - 6x10x3mm
ROAR and IFMAR 1/8 Scale Buggy Rules
Minimum track width - 10 ft continuous
Maximum length - 730mm / 28.74 in
Maximum width - 310mm / 12.20 in
Maximum height - 250mm / 9.84 in
Wheelbase - 270–330mm / 10.63–12.99 in
Minimum weight - 3200g / 7.05 lb
Maximum wheel diameter - 44.45mm / 1.75 in
Tire diameter - 109.2–119.4mm / 4.30–4.70 in
Maximum tire width - 46.99mm / 1.75 in
Maximum engine displacement - 3.5cc / .214 cu in
Transmission - 1 speed only
Tires - rubber only
Race length - Qualifiers - 5 minute
Mains - 5–60 minutes
Page 38
Tuning Tips
Differential Fluids
Changing the viscosity of the fluid in the
differentials affects the way the car handles
and performs. The Mayhem differentials come
pre-filled with 5000 wt. fluid in the center and
front and 1000 wt. fluid in the rear. For most
conditions, this is a good place to start.
Center: Changing the fluid in the center
differential affects the front to rear drive.
To conceptually understand how the center
differential affects handling, think of it as frontwheel vs. rear-wheel drive. Heavier fluid gives
more rear-wheel drive effect, resulting in
more acceleration and more on-power steering.
Lighter fluids in the center differential allow the
front tires to unload during acceleration, giving
more front-wheel drive and reducing power-on
steering. When your car under-steers during
acceleration, try switching to a heavier fluid in
the center differential. When your car over-steers
during acceleration, try switching to lighter weight
diff fluid in the center. Typically the optimum
center differential fluid is between 3,000 to
10,000 wt. depending on track conditions (slick
surfaces = lighter center diff fluid).
Front: The viscosity of the fluid in the front
differential affects overall steering authority.
Heavier fluid reduces steering while lighter fluid
gives more steering. However, if the
fluid used in the front diff is too light the steering
can become inconsistent, especially when
accelerating from corners. Typically
the optimum front diff fluid is between
3000 and 7000 wt.
Rear: The fluid in the rear differential affects
cornering traction and overall steering.
Lighter fluid in the rear diff gives more cornering
traction and more steering, while heavier fluid
reduces rear side bite while reducing steering
authority. Some racers replace the fluid in
the rear differential with thin grease for even
greater rear cornering traction. Nearly all racers
use 1000 wt. fluid or light grease in the rear
differential to get maximum rear end traction.
Choosing Tires
The single most dramatic factor affecting
your car’s handling is tires. Before you begin
changing your setup, it’s important to
choose the best tires for the conditions.
While experimenting with various tread designs,
compounds and liners is the optimum way to find
the best combination, it’s time consuming. If time
is limited, find out what tires the fast guys are
using and duplicate their selection.
Caster
The Mayhem offers two caster positions: arms
forward and arms rearward. Moving the clip in
front of or behind the upper front arms easily
changes caster position. The rearward position
gives slightly more steering in the midsection
and exiting turns, while reducing the steering
on entry. The arms forward position gives more
steering at corner entry, while slightly reducing
the midsection and exit cornering authority.
Page 39
Shock Locations
The Mayhem offers three lower rear shock
positions and two lower front positions. Several
upper shock locations are available.
Lower Shock Positions: Moving the lower shock
mounting position will change the suspension’s
mechanical advantage. Moving the mounting
position inward has a similar effect as using
softer springs and lower weight oil. Moving the
lower mounting position outward is similar to
stiffening the spring rate and increasing the oil
weight.
If the suspension is too soft (bottoming out),
moving the lower shock outward will increase
the rate. If the suspension is too hard (lack of
traction), moving the lower suspension mounting
position inward will decrease the rate giving more
traction. Remember the optimum setting is a fine
balance between the front and rear.
Upper Shock Positions: Moving the upper
shock mounting position inward gives a more
progressive spring and damping rate. Progressive
rate means as the shock is compressed, the
spring and dampening rates increase more
quickly. Standing up the shocks “to their outer
mounting positions” gives more linear dampening
and spring rate.
Note: There are two sets of upper mounting
positions located on the shock tower. The
uppermost holes are used when the shock
is positioned in the inner mounting position
on the arms. The lower set of holes is used
when the shocks are mounted in the outer
suspension’s arm positions.
© 2004 Horizon Hobby, Inc.
4105 Fieldstone Road
Champaign, Illinois 61822
(877) 504-0233
www.horizonhobby.com
6607

Mayhem RTR Manual

Transcription

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