Product overview
The Flash Hobby FH-D9257MG Tail Servo is a digital servo for RC aircraft. It combines a coreless motor, IC drive, potentiometer feedback and digital control with plastic gears and a nylon-plus-fiber case. Its body measures 36.0 × 15.2 × 28.8mm, and its weight without the servo horn is 25 ± 1g. The supplied configuration includes a selection of servo arms or discs and mounting screws. A 250 ± 5mm connector lead uses 28awg PVC wire, with brown negative, red positive and yellow signal connections.
Electrical operation requires 4.8–6.0V, with pulse width modulation control specified at 1520 μsec and pulse travel of 800→2200 μsec. Operating travel is 120° ± 10°, while the limit angle is 180° ± 10°. Stall torque increases from 4 kg-cm at 4.8V to 4.5 kg-cm at 6V; corresponding speeds are 0.08 and 0.07sec/60°. The operating temperature range is -10°C to +50°C. Bearing configuration has contradictory specifications of two bearings and none; current consumption likewise has two different sets of ratings.
Specifications
| Specification | Value & conditions |
|---|---|
| Product | Flash Hobby FH-D9257MG Tail Servo; digital tail servo for RC aircraft. |
| Dimensions | 36.0mm x 15.2mm x 28.8mm |
| Weight | 25 ± 1gWithout servo horn. |
| Operating voltage | 4.8V–6.0V |
| Operating temperature | -10°C to +50°C |
| Service life | Greater than 12000 cycles |
| Operating travel | 120° ± 10° |
| Limit angle | 180° ± 10° |
| Control system | Pulse width modulation control, 1520 μsec |
| Direction and pulse travel | Direction: “Re-clock wise”; pulse travel: 800→2200 μsec. |
| Motor drive | IC drive |
| Motor type | Coreless |
| Position feedback | Potentiometer |
| Amplifier type | Digital control |
| Stall torque | 4 kg-cm at 4.8V; 4.5 kg-cm at 6V.At 4.8V and 6V, respectively. |
| Operating speed | 0.08sec/60° at 4.8V; 0.07sec/60° at 6V.At 4.8V and 6V, respectively. |
| No-load current, first specification | 0.18A at 4.8V; 0.21A at 6V.No load; at 4.8V and 6V, respectively. |
| Load current, first specification | 1A at 4.8V; 1.5A at 6V.Under load; at 4.8V and 6V, respectively. |
| Idle current, alternative specification | 120 mA at 4.8V; 150 mA at 6.0V.At 4.8V and 6.0V, respectively. |
| Running current, alternative specification | 800mA at 4.8V; 900mA at 6.0V.Under load; at 4.8V and 6.0V, respectively. |
| Dead band width | 5 usecAt both 4.8V and 6.0V. |
| Bearing configuration, first specification | Two ball bearings. |
| Bearing configuration, alternative specification | No ball bearings. |
| Gear material | Plastic gears |
| Case material | Nylon plus fiber |
| Connector wire length | 250 ± 5 mm |
| Connector wire gauge and insulation | 28awg PVC |
| Wire assignments |
|
| Supplied accessories | Selection of servo arms/discs and mounting screws.Included equipment. |
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