8 gearing set, Instructions – OFNA Racing CD3 RTR User Manual

Page 28

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SHIFT UP TIMING ADJUSTMENT

* Adjust the engine before adjusting the clutch shift timing.
Adjust the engine as per engine instruction manual.

1. Once the engine adjustments have been completed, proceed to the
adjustment of the clutch shoe shift timing.
(Using a 1.5mm allen wrench to adjust the clutch shoe on either side.)

Note:
Clockwise--------Shift timing will become slower.
Counter-clockwise---Shift timing will become quicker.

2. Adjust the clutch shift timing for your track conditions.
As you tighten (Clockwise) the 2x10mm screw , the shift timing will
become slower.
As you loosen (Counter-clockwise ) the 2x10mm screw, the shift timing
will become quicker.

3. Set the shift timing to the track conditions while the car is running.

M2x10mm
Hex Screw

M2x10
Hex Screw

3x3mm
Set Screw

* Use a 1.5mm allen wrench to
set the clutch shoe.

* Adjust the 3x3 set screw witch is used
to

the distance between the clutch

shoe and clutch bell.

adjust

* Adjust the M2 x 10mm hex screw will be
change the shift timing of the clutch
shoe.

ADJUSTING THE SHIFT POINT

1.5mm
Allen Wrench

Clockwise
(Tighten)

Counter-clockwise
(Loosen)

INSTRUCTIONS

#38640 0.8 GEARING 2-SPEED TRANSMISSION

2 SPEED GEAR RATIO COMBINATIONS

2 SPEED OPTION PARTS

IMPORTANT:
The sum of the spur gear and clutch gear for1st gear must be equal.
Also, he sum of the spur gear and clutch gear for 2nd gear

.

be equal

Example:

1st gear 55+20=75
2nd gear 49+26=75

Must be equal

SPUR GEAR

CLUTCH GEAR

19T/25T

56T/50T

55T/49T

54T/48T

(6 tooth difference - OFNA standard)

20T/26T

21T/27T

22T/28T

Short Track

Torque

Top Speed

Long Track

( STANDARD)

38670 54T Spur Gear, 0.8 1st

38673 48T Spur Gear, 0.8 2nd

38671 55T Spur Gear, 0.8 1st

38674 49T Spur Gear, 0.8 2nd

38675 50T Spur Gear, 0.8 2nd

38672 56T Spur Gear, 0.8 1st

0.8 SPUR GEARS:

Number

Description

#38620 POWER CLUTCH GEARS:

Number

38655 19T-1st Clutch Gear

38656 20T-1st Clutch Gear

38657 21T-1st Clutch Gear

38658 22T-1st Clutch Gear

38659 23T-1st Clutch Gear

38660 25T-2nd Clutch Gear

38661 26T-2nd Clutch Gear

38662 27T-2nd Clutch Gear

38663 28T-2nd Clutch Gear

38664 29T-2nd Clutch Gear

Description

Here

NOT Here, at ball set screw!

0.8 GEARING SET

23T/29T

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