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Futaba - FUTM0661 FUTS9551 S9551 513886204111 4513886204111
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S9551
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Futaba S9551 Digital Low-Profile High-Speed/Torq Servo
 
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Futaba S9551 Digital Low-Profile High-Speed/Torq Servo
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Tower Catalog Page: 163

Stock Number
LXRWS8
Retail Price
119.99
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$74.99
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Stock Status
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Tech Notes
 
NOTES FROM OUR TECH DEPARTMENT
This is the S9551 High Torque Low Profile Digital Servo w/Coreless Motor
for Aircraft and Car Use.

FEATURES

Digitally enhanced microprocessor cuts about half of the response
time from transmitter input to servo reaction
Low profile allows for the servo to fit into wings and lie down
in car chassis for less obstruction
Coreless motor
Metal gears
Dual ball-bearings
Black plastic case
Dust and water resistant (not waterproof)
One year limited warranty
Ideal for F3A aileron application and 1/10 scale electric touring car

INCLUDES

One S9551 Digital Low Profile Servo with 0.83" (21mm) diameter round
horn, 1.7" (44mm) long T-shaped horn, four eylets, two rubber
gromments (order FUTM2250 if mounting screws are needed)

SPECIFICATIONS

Speed: 0.14 sec/60 @ 4.8V
0.11 sec/60 @ 6.0V
Torque: 98 oz-in (7.0kg/cm) @ 4.8V
122 oz-in (8.8 kg-cm) @ 6.0V
Weight: 1.6oz (45g)
Dimensions: 1.6 x 0.8 x 1.0" (41 x 20 x 25mm)
Distance Between Mounting Hole Centers: 0.39" (10mm)
Horn Screw Size: 3x8mm

COMMENTS

S9551 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 S9551 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) When Using Systems With the Battery Fail Safe Function it Has
a Higher Cut-Off Voltage Setting Which Will Cause Shorter
Operation Time.
(2) 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.

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.
For full performance use with FM, PCM and HR systems.

A note on Coreless motors. A conventional servo motor has a steel
core armature wrapped with 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.

jxs 4/21/08
ir/jxs

– If you need more information, use these Futaba resources –
Email: support@futaba-rc.com
Web Site: http://www.futaba-rc.com/
Phone: 217-398-8970
  Postal Address:
Futaba
3002 N. APOLLO DRIVE, SUITE #1
CHAMPAIGN, IL 61822

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