JR PS3421 Digital Mini Ultra Torque Servo
| Part No. | Description | CART | Price |
|---|---|---|---|
| JR PS3421 | Servo, Digital DS3421 Premium Mini Ultra Torque Alloy Metal Gears, JR | $89.99 |
JR's new smaller sized Digital Ultra Torque DS3421 Mini, servo offers outstanding holding torque and quicker response. This is achieved by using a high-frequency digital amplifier with a pulse rate of 300Hz (the number of times the amplifier pulses the motor per second) versus the 50Hz found on a conventional servo. The extreme accuracy of digital precision gives a resolution of 5900 steps per 120º of travel and less than .001ms of dead-band. A durable composite-metal geartrain composed of hard-anodized aluminum and hardened steel and brass gears provides backlash-free operation.
Due to their compact size, these small digital ultra-torque servos are perfect in applications that require servos driven by space restrictions, such as those found in a jet, sailplane, pylon racers, or a complex scale model. Eliminate long accuracy robbing linkages by locating servos closer to the point of operation.
| Part # | JR PS3421 | ![]() |
|---|---|---|
| Description | DS3421 Mini Ultra Torque, Alloy metal gears | |
| Torque (oz.in.) | 65 | |
| Speed (Sec) | .18 | |
| Weight (oz) | 1.04 | |
| Size WxLxH(in) | .58x1.30x1.02 | |
| Ball Bearing | Dual | |
| Motor | Coreless |

