OFNA Racing 9.5 User Manual
FOR ALL 9.5 CHASSIS, VIOLATOR AND BLAZER SST
1
ASSEMBLY OF THE 1ST SPUR GEAR
40251
1st Steel
Spur Gear (51T)
S e
c
r
w
t
C
e
men
40246
1st
Spur Gear Holder
(One-Way)
3
ASSEMBLY OF THE 2-SPEED TRANSMISSION
M5x5mm
Set Screw
30170
Brake
Cap Joint
rew
c
S
m
e
C
36053
8x16x5mm
Ball bearing
t
n
e
40115
Dust Cover
40111 2-Speed Transmission Set
2
ASSEMBLY OF THE 2ND SPUR GEAR
94001
M3x5mm
Hex Screw
94001
M3x5mm
Hex Screw
94001
M3x5mm
1st Spur Gear
Assembly
Hex Screw
M4x4mm
Set Screw
w
e
Scr
en
Cem t
35227
2-Speed
Clutch Cam
94001
M3x5mm
Hex Screw
Put the clutch to the edge of the groove
on the shaft.
40241
2nd Steel
Spur Gear (47T)
35230
8x12mm
Flange
Ball bearing
40248
2nd
Spur Gear Holder
(Ball bearing)
M5x4mm
Set Screw
w
e
r
c
S
t
n
me
e
C
e w
rc
S
nt
e
em
C
4
ASSEMBLY OF THE CENTER DIFF. POST
40114
Alum. Center Diff.
Post adapter
Open
* Notice the opening direction
of the clutch cam.
* Use the center diff. post
and diff. mount from your car.
40114
Alum. Center Diff.
Post adapter
40112
2-Speed
Shaft
35230
8x12mm
Flange
Ball bearing
2nd Spur Gear
Assembly
5
ASSEMBLY OF THE CENTER DIFF. BRAKE DISC
* Only use brake discs in
the front.
* Use the brake discs from
your car.
36053
8x16x5mm
Ball bearing
30170
Brake
Cap Joint
94027
M4x16
Flat Head
Hex Screw
94027
M4x16
Flat Head
Hex Screw
ASSEMBLY OF THE CENTER DIFF. PLATE
6
* Use the parts from you car.
* Position the brake cam to the front.
Screw
Center Diff.
Bushing
Brake Cam
8
ASSEMBLY OF THE 2 SPEED CLUTCH BELL
Plate
94033
M3x3mm
Set Screw
Brake Lever
7
ASSEMBLY OF THE THROTTLE SERVO
Servo Post
* Put the 2mm plastic servo washer
94005
between the servo and radio tray.
M3x16mm
Screw
3x8mm
Washer
40125
2mm Plastic
Servo Washer
A
94033
M3x3
Set Screw
*Use the screw provide
with your servo.
Note book Paper.
34110
5X10X4mm
Ball bearing
5X9X2.5
Washer
9
ADJUSTING THE SHIFT POINT
* Adjust the engine before adjusting the clutch shift timing.
Adjust the engine as per engine instruction manual.
* Use a 2mm allen wrench to
set the clutch cam.
To Front
Adjustment through
this hole.
40229
2-Speed
Clutch Bell
S
nt
w
e
r
e e
c
Cm
2mm
Allen Wrench
Clockwise
(Tighten)
35958
5x8x2.5
Ball bearing
40126
3x6mm
Flange Washer
Anti-clockwise
(Loosen)
40231
M3x10
Cap Screw
11T+15T
2-Speed Gear
A'
* Use a trip of the note book paper to set gear
backlash between Spur Gear and Clutch Bell
Gear.
* If the space is not correct, the spur gear will
be damaged.
The OFNA #40111 2-speed transmission allows the car to have more
punch out of the corners and a higher top speed.
Many different pinion and spur gear combinations are offered, select
the ratio that best fits your driving.
2 SPEED GEAR RATIO COMBINATIONS
IMPORTANT:
The sum of the spur gear and clutch gear for 1st gear must be equal.
The sum of the spur gear and clutch gear for 2nd gear must . be equal
Example:
Example:
1st gear 51+12=63
2nd gear 47+16=63
( STANDARD)
SPUR GEAR
51T/47T
Must be equal
CLUTCH GEAR
(4 tooth difference)
11T/15T 12T/16T 13T/17T
Short Track
Torque
Long Track
Top Speed
14T/18T
*Notice the direction
of the clutch cam.
1. Once the engine adjustment have been completed, proceed to adjustment
of the clutch shift timing.
(Using a 2mm allen wrench to adjustment the clutch cam.)
Note:
Clockwise--------Shift timing will become slower. (Tighten)
Anticlockwise---Shift timing will become quicker. (Loosen)
2. Adjust the clutch shift timing for your track conditions with 4x4mm set screw.
As you tighten (Clockwise) the 4x4mm set screw , the shift timing will become
slower.
As you loosen (Anticlockwise ) the 4x4mm set screw, the shift timing will
become quicker.
3. Set the shift timing to the track conditions while the car is running.
Option Gears
Parts No.
40230 Clutch Gear 12T/16T
40232 Clutch Gear 13T/17T
40286 2-Speed Clutch Bell with 13T/17T Gear
(One Piece Type)
40132 2-Speed Clutch Bell with 14T/18T Gear
(One Piece Type)
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