This is the Futaba S3101 Micro servo that replaces the S133.
TThis servo is used for aircraft or where the smallest servos are needed.

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.

It has nylon gears 3-pole motor, and an oilite bushing.
Futaba products have a 1-Year Warranty against defects w/material & workmanship

SPECS Speed: .18sec/60 deg @ 4.8V - .14sec/60 deg @ 6V
Torque: 35 oz/in @ 4.8V - 43 oz/in @ 6V
2.5 kg/cm @ 4.8V - 3.1 kg/cm @ 6V
Length: 1.1" (28mm)
Width: 0.5" (13mm)
Height: 1.2" (30mm)
Weight: 0.6 ounce (17 grams)
Connector: "J" type with about 5" wire

INCLUDES: One S3101 micro servo with pre-installed "x" servo horn
Two brass eyelets
Two black round rubber grommets
Two servo mount screws
Two servo horns (1 round, 1 "X" and 1 straight)
NOTE: for additional servo horns use FUTM1985

COMMENTS: inch (millimeters) ## .54 (13.6) flange to
Side view: 1.17 (29.7) __?-------¦__ top of
bottom to top ? ? shaft
of case (not ? ? .85 (21.5) flange to
output shaft) ¦________? bottom of
1.1(28) servo

Top view: I ?-----------?
.51(13) ) * (
I ?-----------?
1.38(35)
center-to-center of holes
6/6/95axy
9-15-00 UPDATE
The newest shipment of these sevos are now coming with white servo arms, which
some customers may mistake for Hitec. They are NOT Hitec. They look like they
will fit, but the customer runs the chance of stripping the output shaft if
they try to use them on Hitec.