Page 1
INSTRUCTIONS
#35001 1/8 SCALE 2-SPEED TRANSMISSION SET (Cam Type)
* This two speed transmission is only for "ULTRA”s “ 1/8 Scale Car Kits. (All Models)
2-SPEED ASSEMBLY
* Put the 2 speed cam in
the "D" cut.
35222
Center Gear
Shaft
7mm
5
0
10 15 20 25
mm
* Comes pre-assembled.
Spring
4x4mm
Set Screw
Steel Cam
4 X 5mm
Set Screw
35227
Clutch Cam
Cam Holder
2x5mm
Pin
35225
1St Spur Gear
Holder
(One-Way)
* Push down firmly keeping
the gear straight.
35229
18mm
E-Ring
1St Spur Gear
(49T.48T.47T)
49
*NB, this mark is for
the Counter-clockwise nut.
2nd Spur Gear
(46T.45T.44T)
Counter-clockwise
*Adjustment
Hole
35228
Alum. Nut
* Push bearing into
the gear holder.
35230
8 x 12mm
Flange
Ball bearing
* Note the direction.
if the Cam Holder is installed
around the wrong way, the transmission
won't shift and you will hear a
clicking sound when driving.
35226
2nd Spur gear Holder
(Ball bearing Type)
(Use the parts that come with your kit.)
30170
Brake Joint
7 x 19x 5mm
Bal lbearings
35230
8 x 12mm
Flange
Ball bearing
2 SPEED TRANSMISSION AFTER ASSEMBLY.
49
49
35231
8x10x3mm
Alum. Ring
*Use the ballbearings
that come with your car.
7 x 19x 5mm
49
Ball bearings
30170
Brake Joint
Screw
Cement
5 X 5mm
Set Screw
30200
Center
Diff. Mount
(Rear)
30200
Center
Diff. Mount
(Front)
Screw
Cement
5 X 5mm
Set Screw
Page 2
(Use the parts that come with your kit.)
3 x 10mm
Tapping Screw
30220
Center Plate
Plastic
Pushing
30210
Brake Cam
Leave 0.5 mm
30180
Brake Pads
30171
Brake Lever
*Use the parts comes
with your kit.
3 x 3mm
Set Screw
Screw
Cement
To Front
ASSEMBLY OF THE2 SPEED CLUTCH BELL
35242
Clutch Bell
(For 2 speed.)
( FOR NORMAL PILOT SHAFT)
10091
Normal
Pilot Shaft
( FOR SG PILOT SHAFT)
10098
5x9x0.3mm
Washer
10098
SG Nut/shims
Pilot Shaft
* Depending on the engine you use,
it may be necessary to use 5x9x0.3mm
washer for a long crank shaft.
34110)
5x10mm
Ball bearing
34110
5x10mm
Ball bearing
35242
Clutch Bell
(For 2 speed.)
30190
Brake Disc
S
cre
w
em
C
t
en
crew
e
S
C
35253
18T 2nd
Clutch Gear
t
en
m
35253
18T 2nd
Clutch Gear
3 x12mm
Screw
35238
14T 1st
Clutch Gear
35238
14T 1st
Clutch Gear
35958
5x8x2.5mm
Ball bearing
35958
5x8x2.5mm
Ball bearing
5x8x0.8mm
Washer
3x8x0.5mm
Washer
5x8x0.3mm
Washer
3x5mm
Screw
3x8x0.5mm
Washer
35243
Dust Cover
35243
Dust Cover
3x5mm
Screw
* Notice the direction of the
2nd clutch gear as shown.
Page 3
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.
2mm
Allen Wrench
Adjustment thru this
hole.
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.
Counterclockwise---Shift timing will become quicker.
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 (Countericlockwise ) the 4x4mm set screw, the shift timing will
become quicker.
3. Set the shift timing to the track conditions while the car is running.
2 SPEED GEAR RATIO COMBINATIONS
The #35001 2-speed transmission allows the car to have more
punch out of the corners and higher top speed.
We offer many different pinion and spur gear combinations
which can be used for different tracks.
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
Clockwise
(Tighten)
Counter-clockwise
(Loosen)
( STANDARD)
SPUR GEAR
CLUTCH GEAR
(4 tooth difference)
49T/45T 13T/17T 14T/18T 15T/19T
48T/44T
47T/43T
*Notice the direction
of the clutch cam.
To Front
16T/20T
Short Track
Torque
Top Speed
Long Track
2 SPEED OPTION PARTS
SPUR GEAR(1st):
SPUR GEAR(2nd):
CLUTCH GEAR:
CLUTCH GEAR
(1st):
CLUTCH GEAR
(2nd):
USA Parts No.
Description
No.35249 49T Spur Gear (STD)
No.35248 48T Spur Gear
No.35247 47T Spur Gear
USA Parts No.
Description
No.35246 46T Spur Gear
No.35245 45T Spur Gear (STD)
No.35244 44T Spur Gear
USA Parts No.
Description
No.35220 13T/17T Gear (STD)
No.35232 14T/18T Gear
No.35233 15T/19T Gear
USA Parts No.
Description
35238 14T Gear (STD)
35239 15T Gear
35240 16T Gear
35241 17T Gear
USA Parts No.
Description
35252 17T Gear
35253 18T Gear (STD)
35254 19T Gear
35255 20T Gear
35256 21T Gear
2 SPEED SPARE PARTS
USA Parts No.
35225 1st Spur Gear Holder
35228 Alum. Nut (Counter-Clockwise)
35230 8x12mm Flange Ball bearing
35222 Center Shaft
34110 5x10x4mm Ball bearing
35242 Clutch Bell Base
35249 49T Spur Gear (1st)
35245 45T Spur Gear(2nd)
35226 2nd Spur Gear Holder
35227 Clutch Cam Set
35229 18mm E-Ring
Misc Parts Spring
4mm Ball
35237 6x6mm Set Screw
3x15mm Hex Screw
35231 8x10x1.5mm Alum. Ring
35243 Dust Cover, Steel
OFNA Racing-USA
Tel:949-586 2910 Fax:949-586 8812
Description
Made In Taiwan
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