Hitec Hs-75Bb Retract Servo, .34Sec/114Oz @ 6.0V

This is a 75BBS Retract Servo utilized for R/C Airplane Mechanical Retracts
with a Universal Futaba J, Hitec S, JR and Airtronics Z connector.

FEATURES:
High torque
Journeys 180° - full-lock to full-lock - to hold your equipment in position
    safely. Not proportional. Perfect for mechanical retract
    installation.
Water resistant
Ball bearings

CONSISTS OF:
Servo w/Universal port, along with full set of horns, grommets,
    bushings and mounting screws.

SPECS:
Length: 44mm (1.7") Weight: 35g (1.23 oz.)
Width: 23mm (0.9") Torque: 6.6 kg-cm (92 oz-in)
Height: 25mm (1.0") Speed: 0.5 sec/60°

REMARKS:
A retract servo is a very specialized servo. It is non-proportional,
    going 180 degrees, "lock to lock". They are specifically produced
    mechanical retracts to lock the equipment in the up and down positions.
    they DO NOT have any means of end point adjustment and can not be
    changed by ATV on a transmitter. They are just able to go 180
    degrees and supply full optimum offered torque at the 2 end
    points. This is their whole function and deliberate {design|style}, but if
    someone has a unique design circumstance where they need aside from
    180 degrees offered, then they need to utilize a proportional servo,
    not a retract servo. They are specifically developed to withstand
    constant holding loads in the up and down positions, unique to the
    use of mechanical pulls back.
    Pneumatic retracts do not need a retract servo. A proportional
    standard or small servo is utilized to move the air valve backward and forward

    For Gear set, order HRCM6343