is a good starting point for your tuning. Remember not to change pinions
more than one tooth at a time, and that overgearing can damage your
motor.
It is typically quicker to change your pinion gear than your spur gear, but this
results in larger changes in gear ratios. If you want finer adjustment of gear
ratio, change the spur gear.
•• M
Moorree tteeeetthh oonn aa ppiinniioonn: Higher top-end speed. However, there is typically
less run time and slower acceleration. C
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weerr tteeeetthh oonn aa ppiinniioonn::, More run time, and better initial acceleration.
However, your car will attain less top-end speed.
Tailor the gearing according to track length and type (high-speed vs.
technical). For larger less technical tracks, top-end speed is usually more
important, so try a pinion that is a tooth larger than the chart. For smaller
more technical tracks, try using a pinion that is a tooth smaller than the chart.
NOTE: Adjust gear mesh so there is only a tiny amount of play between the
pinion teeth and the spur teeth.
Final Adjustments
RADIO ADJUSTMENTS
First, remove the servo horn from the
steering servo, and disconnect the motor
wires (DO NOT let the motor wires touch!),
then turn the transmitter on. Next, connect
the battery pack and turn on the speed control. Set the steering trim to
neutral on your transmitter, then reconnect the servo horn to the steering
servo so the steering horn is perpendicular as shown.
With the steering servo centered, use the transmitter to turn the steering left
and right, noting if the wheels turn in the proper direction. If not, change the
steering servo direction (servo reverse) on the transmitter and re-center the
servo horn on the steering servo if necessary.
Next, examine the car’s servo saver.
Use the steering link adjustment
(between the servo horn and the
servo saver) to get the servo saver as
centered as possible.
Next, examine the position of the
front wheels; they should be pointing
straight ahead. If not, adjust the two
steering rods equally until the wheels
point straight ahead.
When adjusting the servo, adjust the
steering so the steering block does
not turn to its maximum amount. If it
does, decrease steering throw with
your transmitter’s EPA setting, or with
the dual-rate setting if EPA is not
available. Failure to do so can
greatly reduce the life of your servo
and influence the racing
performance.
SPEED CONTROL (ESC) ADJUSTMENT
Set up the speed control according to the manufacturer's instructions.
NOTE: Some manufacturers require the motor to be connected during
adjustment.
CONNECTING THE MOTOR
Elevate the car on a stand so all four wheels can spin without touching
anything. Turn on the power again. Check the speed control and steering
settings once again to make sure they work properly. When finished, turn
off the power and disconnect the batteries.
MOTOR GEARING
Proper gearing is critical to get maximum performance from your motor.
The gear ratios listed in the chart are the recommended starting gear
ratios. Ratios can vary from track to track, however the suggestions we list
90°
Final Adjustments
4
3
Diff pulley 34T / one way pulley 16T
Drive ratio 2.125 : 1
Overall Gear Ratio Chart
pitch 1/48”
87
90
93
96
20
10.20
21
9.71
22
8.98
9.27
23
8.59
8.87
24
8.23
8.50
25
7.65
7.91
8.16
26
7.36
7.60
27
7.08
7.32
28
6.60
6.83
7.06
29
6.38
6.59
30
6.16
6.38
31
5.96
6.17
32
5.78
33
5.60
34
5.44
Overall Gear Ratio Chart
pitch 1/64”
116
120
124
128
27
10.07
28
9.71
29
9.09
9.38
30
8.78
9.07
31
8.50
8.77
32
8.23
8.50
33
7.73
7.98
8.24
34
7.50
7.75
35
7.29
7.53
36
7.08
7.32
37
6.66
6.89
7.12
38
6.49
6.71
39
6.32
6.54
40
6.16
6.38
41
6.01
6.22
42
5.87
43
5.73
44
5.60
45
5.48
pinion spur g.
pinion spur g.
Summary of Contents for T1R Raycer
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