OFNA Racing OB4 RTR - Manual (Page 35)

39413
MAIN SHAFT BLOCK PLASTIC PARTS
39414
REAR BLOCK COVER PLASTIC PARTS
37968
BODY POST
39416
BATTERY HOLDER, FLAT PACK OPTION
37949
MANIFOLD
31890 PIPE
39420
CHASSIS
R/C TIPS
R/C cars are fun to drive, but be aware that driving them in the wrong places can cause serious damage.
Never drive near real cars, animals, or people that are unaware the R/C car is being driven.
When learning to drive, go to an area that has no obstacles that can damage your car if you have a crash.
Stay away from curbs, parked cars, poles, etc. Always wear shoes when driving.
SAFETY PRECAUTIONS
Follow the outlined rules for safe radio control
operation.
1. Make sure that no one else is using the same
frequency in your running area. Using the same
frequency at the same time can cause serious
accidents, whether it's driving , flying, or sailing.
2. Avoid running in standing water and rain. If
R/C unit, motor, or battery get wet, clean and dry
thoroughly in a dry shaded area.
R/C OPERATING PROCEDURES
1. Make sure the transmitter controls and trims are
in neutral.
2. Switch on transmitter.
3. Switch on receiver
Inspect operation using transmitter before running.
Revers sequence to shut down after running, and
make sure to disconnect or remove batteries.
INSPECTION BEFORE OPERATION
1. Make sure that screws and nuts are tight enough.
2. Make sure that batteries for transmitter are new,
and Ni-Cad running batteries have been sufficiently
charged.
If batteries are not new or fully charged, the model
may run out of order.
3. Adjust steering servo and trim so that the model
runs straight with transmitter in neutral.
4. Double check speed controller for neutral position.
5. Double check for wiring breaks and short circuits.
6. Check motor function. Unusual noise or excessive
heat build-up in a short period may indicate a
damaged motor.
7. Apply grease to suspension, gears, ballbearings, etc.
MAINTENANCE AFTER RUNNING
After operating the model, perform the following to
maintenance for best performance.
1. After running model, switch off transmitter and re-
move batteries from model and R/C unit.
2. Completely remove sand, mud, dirt, etc.
3. Apply grease to suspension, gears, ballbearings.
4. Do not use water or solvents to clean your model.
INSTRUCTIONS #39450 2 SPEED TRANSMISSION
The #39450 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.
*Notice the direction of
the clutch cam.
* Use a 2mm allen wrench to
set the clutch cam.
* Adjust the engine before adjusting the clutch shift timing.
Adjust the engine as per engine instruction manual.
2mm
Allen Wrench
Clockwise
Counter
clockwise
1. Once the engine adjustments are completed, proceed to adjustment of the clutch shift timing.
Using 2mm allen wrench to set the clutch cam.
Note:
Clockwise-------------Shift timing will become slower.
Counter clockwise-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 (Counter clockwise ) the 4x4mm set screw, the shift timing will become quicker.
3. Set the shift timing to the track conditions while the car is running.
SHIFT UP TIMING ADJUSTMENT
2 SPEED GEAR RATIO COMBINATIONS 2 SPEED OPTION PARTS
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
* Also 2 tooth and 5 tooth differences arepossilbe, but not shown..
SPUR GEAR CLUTCH GEAR
45T/41T 13T/17T
44T/40T
43T/39T
42T/38T
41T/37T
(4 tooth difference - OFNA standard)
14T/18T 15T/19T 16T/20T
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SPUR GEAR CLUTCH GEAR
45T/43T 13T/16T
44T/41T
43T/40T
42T/39T
41T/38T
(3 tooth difference - HPI standard)
14T/17T 15T/18T 16T/19T
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( STANDARD)
¤ j ¾ ¦
(MODIFY)
35952 45T Spur Gear (Olive Green)
35965 44T Spur Gear (White)
35934 43T Spur Gear (Blue)
35942 42T Spur Gear (Red)
35953 41T Spur Gear (Pink)
35964 40T Spur Gear (Grey)
35935 39T Spur Gear (Yellow)
35963 38T Spur Gear (Orange)
35943 37T Spur Gear (Dark Green)
SPUR GEAR:
Number Description
CLUTCH GEAR:
Number
35948 13T-1st Clutch Gear
35949 14T-1st Clutch Gear
35940 15T-1st Clutch Gear
35944 16T-1st Clutch Gear
35947 17T-2nd Clutch gear
35950 18T-2nd Clutch Gear
35941 19T-2nd Clutch Gear
35945 20T-2nd Clutch Gear
Description
Use thread lock
on set screw!