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Hitec - HRCM7954 HRC37954S 37954S 669962379540 0669962379540
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Hitec HS-7954SH High-Voltage Ultra-Torque Dual BB Servo
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Hitec HS-7954SH High-Voltage Ultra-Torque Dual BB Servo
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Tech Notes
This is the HS-7954SH High-Voltage Ultra Torque Digital Servo from Hitec.


Ideal for giant scale planes, large helicopters, rock crawlers,
monster trucks, 1/8 scale trucks and buggies and anywhere a high
performance, high torque servo is needed
Coreless motor for precise centering and accuracy
G2 programmable digital circuit, programmable features include;
Dead Band Width Speed (reduction)
Fail Safe Position Direction (CW/CCW)
Fail Safe On/Off End Points
Overload Protection Resolution High/Low
Steel gears for much longer life than conventional metal gears
Nine O-rings for extra resistance to moisture and dust
Capable of operating on two cell LiPo packs


HS-7954SH High-Voltage Ultra Torque Servo, 1.8" (45mm) diameter round
horn, 2.3" (59mm) long double sided horn, 2.8" (72mm) long double
sided horn, 1.3" (34mm) single sided horn, 0.83" (21mm) single
sided aluminum horn, 0.98" (25mm) single sided horn, four each
grommets, eyelets and mounting screws, instruction sheet


Installing in model and connecting to control linkage and receiver


Size: 1.57 x 0.78 x 1.45" (40 x 20 x 37mm)
Weight: 2.30oz (65.2g)
6.0V 7.4V
Speed: 0.15 sec 0.12 sec
Torque: 333 oz/in 403 oz/in
Wire Size: 22 gauge twisted wire with gold plated connectors
Drivetrain Type: Dual ball bearing


This servo can be programmed with any Hitec digital servo
programmer. However, the Overload Protection and Resolution High/
Low can only be programmed with the HFP-20, HPP-21
(HRCM4420) or the HPP-21+ (HRCM4421)

A note on 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 wire mesh that forms a cup
that spins around the outside of the magnet. This arrangement is
much lighter resulting in smoother operation and faster response

jxs 7/13/09

– If you need more information, use these Hitec resources –
Web Site:
Phone: 858-748-6948
  Postal Address:
POWAY, CA 92064

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Accessories Needed
This is the HS-7954SH High-Voltage Ultra Torque Digital Servo from Hitec. FEATURES: Ideal for giant scale planes, large helicopters, rock crawlers, monster trucks, 1/8 scale trucks & buggies, coreless motor, steel gears, dual ball bearings, G2 programmable circuit

Accessories for the Hitec HS-7954SH High-Voltage Ultra-Torque Dual BB Servo

      Optional Accessories
  Special Stock Number Product Description Parts Saver Eligible Tower's
Low Price
Click to Order Quantity Needed In Cart? Stock
 LXWCE8 Hitec HPP-21 Digital Servo Programmer
Qty Discount Available
26.99   In Stock
 LXWCE9 Hitec HPP-21 Plus Digital Servo Programmer
Qty Discount Available
49.99   In Stock
 LXDDPY Hitec Rudder Tray Conversion Kit
Add to Wish List
79.99   Back Order Only
Subtotal for this Group of Accessories: 156.97  

      Optional Accessories

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