Ford 58064 Adjusting the Slipper Clutch, Motor and Gearing, Gearing Compatibility Chart

*optional (sold separately)

Adjusting the Slipper Clutch
The model is equipped with an adjustable
slipper clutch, which is built into the
large spur gear. The purpose of the	Tighten
slipper clutch is to regulate the
amount of power sent to the rear
wheels to prevent tire spin. When	Loosen
it slips, the slipper clutch makes a

high-pitch, whining noise. Remove the rubber slipper clutch plug on the transmission cover in order to adjust the slipper. Use the

4-way wrench to turn the adjusting nut clockwise to tighten and counterclockwise to loosen. Place the model on a high-traction surface, such as carpet. Adjust the slipper so that you can hear it slip for approximately two feet from a standing, full throttle start. (Learn more about adjusting the slipper clutch in the sidebar.)

Motor and Gearing

There are two different types of aftermarket motors that can be purchased for your model, stock and modified. Stock motors all have the same wire thickness and number of turns around the armature as governed by sanctioned racing organizations. They are inexpensive and widely available. Modified motors are more expensive, may feature ball bearings, and come in a variety of wire thicknesses and a number of turns of wire on the armature. The fewer number of turns of wire on the armature, the more powerful the motor will be. Keep in mind that the more powerful the motor, the less battery run time you will have.

One of the more significant advantages to your model’s transmission is the extremely wide range of available gear ratios. It can be geared low enough to run an extremely hot, modified motor. A modified motor should be geared lower (higher numerically) than a stock motor because it will reach its maximum power at higher rpm’s. A modified motor that is geared incorrectly can actually be slower than a correctly-geared, stock motor. Use the following formula to calculate the overall ratio for

# Spur Gear Teeth	x 2.72 = Final Gear Ratio
# Pinion Gear Teeth

combinations not listed on the gear chart:

If you are worried that you might be over-geared, check the temperature of the battery pack and motor. If the battery is extremely hot, and/or the motor is too hot to touch, your model is probably over-geared. If you are not able to run your model for at least

ADJUSTING YOUR MODEL

four minutes before the battery dies, then change to a lower gear ratio. This temperature test assumes that the model is close to factory stock weight and operates freely with no excessive friction, dragging, or binding, and the battery is fully charged and in good condition.

The model is equipped with a Titan 12T 550 motor. The gear combination that comes stock on each model provides good overall acceleration and top speed. If you want more top speed and less acceleration, install the included high-speed gearing (more teeth). If you want more acceleration and less top speed, use a smaller optional (not included) pinion gear. The included high-speed gearing is intended for high-speed running on hard surfaces, and this gearing is not recommended for off-road or repetitive starting and stopping.

The Titan 12T is equipped with an integrated cooling fan that is effective during medium to high-speed operation. The gearbox is specially vented to cool the

motor. Repetitive starting and	• Fast Acceleration	14-Tooth Pinion*
	• Short Distances
stopping over short distances		90-Tooth Spur
	• Small Tracks
creates excess heat and will
	• Good Acceleration
not allow the fan to cool the		16-Tooth Pinion
	• Good Speed
motor properly. For this type		90-Tooth Spur
	• Normal Conditions
of driving, smaller pinion
	• High Top Speed
gears are recommended to		23-Tooth Pinion
	• Long Distances
reduce load on the motor.		86-Tooth Spur
	• Hard Surfaces

Gearing Compatibility Chart

The chart to the right shows

a full range of gear combinations. This does NOT imply that these gear combinations should be used. Over-gearing (bigger pinions, smaller spurs) can overheat and damage the motor and/or speed control. Items in black will fit 540 motor only (not Titan 12T).

Adjusting Gear Mesh
Incorrect gear mesh is the most common cause of
stripped spur gears. Gear mesh should be checked and
adjusted anytime a gear is replaced. To set the gear
mesh, cut a narrow strip of notebook paper	Strip of
and run it into the gear mesh. Loosen the
	Paper
motor screws and slide the motor and pinion
gear into the spur gear. Retighten the motor
screws and then remove the strip of paper.
You should be able to run a fresh strip of paper		Motor
through the gears without binding them.
		Screws

Do not run your model with the slipper clutch adjusting spring fully compressed. The minimum recommended slipper clutch setting is 1/2 turn counterclockwise from fully compressed.

Spur Gear

		76	83	86	90
	12	-	-	-	20.40
	13	-	-	-	18.83
	14	-	-	-	17.49
	15	-	-	15.59	16.32
	16	-	-	14.62	15.30
	17	-	-	13.76	14.40
	18	-	12.54	13.00	13.60
Gear	19	-	11.88	12.31	12.88
	20	-	11.29	11.70	12.24
Pinion
	22	-	10.26	10.63	11.13
	21	-	10.75	11.14	11.66
	23	-	9.82	10.17	10.64
	24	-	9.41	9.75	10.20
	25	8.27	9.03	9.36	9.79
	26	7.95	8.68	9.00	-
	27	7.66	8.36	8.66	-
	28	7.38	8.06	8.35	-
	29	7.13	7.78	8.07	-
	30	6.89	7.53	-	-

Stock

Included Optional

Usable Range

High Speed, Hard Surfaces Only

Not Recommended

-Does Not Fit

RAPTOR • 21