OFNA Racing 9.5 2-Speed Trans Assembly - Manual (Page 2)

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ADJUSTING THE SHIFT POINT
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.
* 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. 2mm
Allen Wrench
Clockwise
(Tighten)
Anti-clockwise
(Loosen)
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:
1st gear 51+12=63
2nd gear 47+16=63
Must be equal
SPUR GEAR CLUTCH GEAR
(4 tooth difference)
51T/47T
11T/15T 12T/16T 13T/17T
S h o r t Tr a c k
To r q u e To p Sp e e d
L o n g Tr a c k
( STANDARD)
2 SPEED GEAR RATIO COMBINATIONS
*Notice the direction
of the clutch cam.
Adjustment through
this hole.
To Front
14T/18T
Example:
ASSEMBLY OF THE CENTER DIFF. PLATE ASSEMBLY OF THE THROTTLE SERVO
Screw
94005
M3x16mm
Screw
Bushing
Brake Cam
Center Diff.
Plate
* Use the parts from you car.
* Position the brake cam to the front.
94033
M3x3mm
Set Screw
Brake Lever 3x8mm
Washer
40125
2mm Plastic
Servo Washer
Servo Post
* Put the 2mm plastic servo washer
between the servo and radio tray.
94033
M3x3
Set Screw
*Use the screw provide
with your servo.
ASSEMBLY OF THE 2 SPEED CLUTCH BELL
5X9X2.5
Washer
34110
5X10X4mm
Ball bearing
40229
2-Speed
Clutch Bell
35958
5x8x2.5
Ball bearing
40126
3x6mm
Flange Washer
M3x10
Cap Screw
40231
11T+15T
2-Speed Gear
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S
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C
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A
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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.
* 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.
Note book Paper.
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)