They are Rctimer D9025MG, D9257 and D9257MG. All of them offer fast performance servo motor that you need.
RC Timer D9025MG
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RC Timer D9025MG is a digital servo motor with metal gear inside. The weight of this servo is 13 gram, with standing torque is 2.35kg.cm at 4.8 V and 2.5kg.cm at 6.0 V.
D9025MG speed is 0.11 sec / 60 degree if you give 4.8 V power source and 0.09 sec / 60 degree if you give 6.0 V power source. This speed is when there is no load on the servo motor.
See the picture below for complete specification of RC Timer D9025MG Servo Motor.
For the price, you can get RC Timer D9025MG for just $6.99. You can buy this product here:
http://goo.gl/NQ16N
RC Timer D9257
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D9257 is a high speed servo with just need 0.07 second to reach 60 degree at 6 V. If you give 4.8 V as a power source, the speed drops to 0.08 sec/ 60 degree, not a significant change. The dimension of this servo motor is 35.5 x 15.0 x 28.6 mm, and the weight is 25 gram. D9257 comes with two ball bearings, mounting screws and selection of servo discs or arm.
D9257 use 1520μs wide band and using coreless motor. This servo motor is perfect to use as T-REx tail servo because has a High speed, High performance and High Resolution.
The stall torque of D9257 is 3.8 Kg.cm at 4.8 V or 4.2 Kg.cm at 6.0 V. D9257 is a cheap high speed servo motor, because you can get this product for just $8.79. Follow the link below to Buy this product:
http://goo.gl/3hMU9
RC Timer D9257MG
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D9257MG is a Coreless Digital Servo motor. The dimension of this servo is 35.5 x 15 x 28.6 mm, and the weight is 25 gram. This servo motor has metal gear, coreless motor, and double ball bearing. You can use this servo with the Futaba GY401 and GY502 gyros.
Maximum speed of D9257MG is 0.08 sec/ 60 degree at 4.8 V or 0.07 sec/ 60 degree at 6.0 V. The Torque of this servo is good too. It reach 6.3 Kg.cm at 6.0 V or 6.0 at 4.8 V.
You can get D9257MG servo motor for just $11.69. Follow the link below to go to product page:
http://goo.gl/bm06d
If you found other cheap and fast servo motor products, you can share through the comment box.
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