This is a Sail Control Winch Servo that has proper Winching-Action with a
Drum (rather than servo arms like other "sail winch" servos).

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

FEATURES: High Torque and High Speed
BEC set-up (a 5-6 cell battery pack powers the winch and the
receiver the same way an Electronic Speed Control would)
Water Resistant
5-pole motor
Metal Gears
Two Ball Bearing
Adjustable Trimmer (adjusts from two to six 360?revolutions) as
increasing number of revolutions are dialed in-speed increases

INCLUDES: One S5801 Sail Winch Servo
(Futaba J Receiver Plug, ON/OFF Switch and Tamiya-style battery plug)
One Drum Adjuster Plastic Screwdriver
One Illustrated Instructions Sheet

REQUIRES: 5-6 Cell Battery w/Tamiya Connector, use DTXC2100.

SPECS: Torque: 109 oz/in @ 6V - 136 oz/in @ 7.2V
(7.8 kg/cm @ 6V - 9.8 kg/cm @ 7.2V)
Servo Speed: .6 seconds/360-degrees of rotation @ 6V
.5 seconds/360-degrees of rotation @ 7.2V
Drum Travel: 2 to 6 Revolutions (adjustment range)
Drum Diameter: 1.6" (42mm)
Length: 1.8" (46mm) (excluding drum and mount flanges)
Width: 1.0" (25mm)
Height: 1.8" (46mm)
Weight: 2.9 oz (83g)
Power Requirement: 6.0 - 7.2V NiCd battery (5 - 6 cells)
Regulator output: 6.0V/1.5 Amp (max) (power to the receiver)
Drum Measurements:
Height: 9.0mm (0.356)
Width: 41.9mm (1.652")
Width of each groove: 3.5mm (0.140")
Depth of each groove:13.7mm (0.540")