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Futaba - FUTM0222 FUTS9252 S9252 513886200724 4513886200724
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Futaba S9252 Digital All Purpose Servo
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Futaba S9252 Digital All Purpose Servo
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Tower Catalog Page: 189

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Tech Notes
This is the Futaba S9252 Digital High Torque, All-Purpose F3C Servo
with High-Current Wire Lead and "J" Connector Pre-Installed.

This servo can produce high-current draw from your batteries
If using NiMH or LiPo batteries, make sure they are capable
of delivering sufficient amps.


Digitally enhanced microprocessors cut about half the response time
from transmitter input to servo reaction.
Coreless motor
Dual ball bearings on the output shaft
Plastic/nylon gear train
Moderately high speed
High current, high capacity wire lead with low resistance
Case is made of Black plastic
Dust and water resistant (Not waterproof)
Works well with all control surfaces on F3C helicopters or precision
fixed wing aircraft.
One year warranty


One Digital All Purpose Servo w/Small Round Horn
Four Rectangular Grommets
Four Brass Bushings
Four Mounting Screws
One Large Round Horn
One Six Arm Horn


Speed: 0.14 sec/60 @ 4.8V
Torque: 92 oz-in (6.6 kg-cm) @ 4.8V
Weight: 1.8oz (50g)
Power Supply: 4.8V (Futaba does not recommend using 6V)
Dimensions: 1.6 x 0.8 x 1.4" (40 x 20 x 37mm)


S9252 Digital Servo Precautions:
-It is best to avoid long leads and Y-harnesses especially with
standard grade wires. If problems are encountered, consider using
heavy duty wire such as Futaba's Heavy Duty Series or Hobbico's
Pro Series ,minimizing lead lengths, and/or removing Y-harnesses.
-Current Drain: Futaba S9252 Servo is specially designed for high-
torque and high-speed, therefore very high current drain is
normal at startup. For ultimate performance when using this servo,
please review the following points.
(1) Always use a 4.8V NiCd battery. Dry cells are rated at 1.5V
each making the overall voltage 6V which will damage the gyro.
(2) When using systems with the battery fail safe function it has
a higher cut-off voltage setting which will cause shorter
operation time.
(3) When installing the servo please check pushrod linkage to make
sure there is no binding in order to prevent excessive power
consumption and decrease the life of the motor and battery.
When Used With GY501 Gyro:
Switch the GY501 servo frame rate function (Frm) from "NOR" to
"High" to display the performance of the gyro to the fullest.
Setting Method:
(1) Press the GY501 FUNC+ or - key to call the Servo Frame Rate
Setup Screen.
(2) Press the DATA+ or - key to display "High".
This digital servo cannot be used with the following * AM *
transmitters as the servo neutral signal is: 1310us).
CONQUEST AM, FG Series (T4FG, T5FGK,T6FG, T6FGK, T7FGK), New Terratop,
T3EGX, T3PGE, T2NL, T2LGX, T2FR, T2PK series.
**** Otherwise they will work fine with current AM systems *****

An explanation of Coreless motors, a conventional servo motor has a
steel core armature wrapped with wire that spins inside the
magnets. In a Coreless design, the armature uses a thin wire mesh
that forms a cup that spins around the outside of the magnet
eliminating the heavy steel core. This design is much lighter
resulting in smoother operation and faster response time.
JAL 1/31/01
JXS 2/25/02
updt jxs 10/31/03
updt jxs 11/01/04

– If you need more information, use these Futaba resources –
Web Site:
Phone: 217-398-8970
  Postal Address:

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