OFNA Racing 2-Speed, Shoe, Z-10 - Manual (Page 2)

3 x 5mm
Screw
3 x 8
washer
A-47A
5 x 10
Ball bearing
234Y
5 x 8mm
Ball Bearing
The #308 2-speed transmission has a smooth gear change
and is less aggressive on the 2nd gear.
We offer many different pinion and spur gear combinations
which can be used for different tracks.
* 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.)
Note:
Clockwise--------Shift timing will become slower.
Anticlockwise---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 (Anticlockwise ) the 2x10mm screw, the shift timing will
become quicker.
3. Set the shift timing to the track conditions while the car is running.
* Use a 1.5mm allen wrench to
set the clutch shoe.
1.5mm
Allen Wrench
Clockwise
(Tighten)
Anti-clockwise
(Loosen)
M2x10
Screw
3x3
Set Screw
* Adjust the 3x3 set screw witch is used
to
the distance between the clutch
shoe and clutch bell.
adjust
* Adjust the M2 x 10mm screw will be
change the shift timing of the clutch
shoe.
ASSEMBLY OF THE 2 SPEED CLUTCH GEAR CHECK THE GEAR BACKLASH OF THE CLUTCH GEAR
AND SPUR GEAR
234x
Clutch Bell
234Y
18T 2nd
Clutch gear
234V
14T 1st
Clutch Gear
* Use note book paper to set gear backlash between spur and clutch bell gear.
If the space is not correct the spur gear will be damaged.
* Loosen or tighten your engine mount screw to adjust the mesh of the spur gear
and clutch bell.
Note Book
Paper
ADJUSTING THE SHIFT POINT
2 SPEED OPTION PARTS
235C 45T Spur Gear
235G 44T Spur Gear
234A 43T Spur Gear
234O 42T Spur Gear
235D 41T Spur Gear
N0.
SPUR GEAR(1st):
Description
2343 40T Spur Gear
234B 39T Spur Gear
234E 38T Spur Gear
235P 37T Spur Gear
256F Main Shaft
308A 2nd Gear Clutch Bell
308B 1st Gear
308C Clutch Shoe
308D Spring
308E Balance
Carrier
N0.
N0.
SPUR GEAR(2nd):
Description
Description
234U 13T (1st)
234U 14T (1st)
234L 15T (1st)
234Q 16T(1st)
234T 17T(2nd)
234W 18T(2nd)
234M 19T(2nd)
234R 20T(2nd)
N0.
CLUTCH GEAR:
Description
IMPORTANT:
The sum of the spur gear and clutch gear for1st gear must be equal
the sum of the spur gear and clutch gear for 2nd gear
. be equal
Example: 1st gear 45+13=58
2nd gear 41+17=58
Must be equal
2 SPEED GEAR RATIO COMBINATIONS
SPUR GEAR
CLUTCH GEAR
44T/40T
43T/39T
42T/38T
41T/37T
(4 tooth difference)
45T/41T 13T/17T 14T/18T 15T/19T
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( STANDARD)
16T/20T
SPUR GEAR
CLUTCH GEAR
44T/41T
43T/40T
42T/39T
41T/38T
(3 tooth difference)
45T/42T 13T/16T 14T/17T 15T/18T
( OPTION)
16T/19T
USA Parts No.
USA Parts No.
USA Parts No.
308F Clutch Shoe Carrier
308G M2x10mm Hex Screw
One-Way Bearing FS-26B
E-45 10x15x4mm Ballbearing
N0. Description USA Parts No.
USA Parts No.
2 SPEED PARTS