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The 2721 features the same
powerful coreless motor and proven reliable amplifier as the
4721, but with a significantly strengthened gear train. It
has a hard anodized aluminum output gear and brass and
hardened steel counter gears. The output gear is hard coated
aluminum, so it's lightweight, and the hard-coated surfaces
are incredibly tough and resistant to wear. The gear train
is also narrower, allowing for a shorter top case, making
the overall height of the 2721 3/16" shorter than the 4721.
All other case and mounting dimensions are identical to the
4721 and will directly replace any standard size JR servo
(507, 517, 531, 4131, 4735, or 4721).
For high stress, high power
applications such as giant scale aircraft, large scale
racers, etc, JR's metal-geared 2721 servo offers the
ultimate in strength and power in a standard size servo. |
