Etronix Servo Solution Centre

Servo FAQ
APPLICATION:
Part # Speed (4.8v) Torque kg/cm (4.8v) Speed (6.0v) Torque kg/cm (6.0v) Speed (7.4v) Torque kg/cm (7.4v) Speed (8.4v) Torque kg/cm (8.4) Description Size Price
4.8 volt 6.0 volt 7.4 volt 8.4 volt
ET0017 0 0 0 0 0 0 0 0 ETRONIX ES060 6.0KG DIGITAL STD WATERPROOF SERVO STANDARD £11.99
ET2072BK 0 0 0.11 24.70 0 0 0.09 30.30 ETRONIX 30.3KG/0.09S STD DIGI SERVO HV METAL GEAR WATERPROOF (BLACK) STANDARD £49.99
ET2069 0 0 0 0 0 0 0 0 ETRONIX 15KG/0.16S STD DIGI SERVO METAL GEAR WATERPROOF STANDARD £15.99
ET2070 0 0 0 0 0 0 0.16 21.80 ETRONIX 21.8kg/0.16s STD DIGI SERVO HV METAL GEAR WATERPROOF STANDARD £21.99
ET2072 0 0 0.11 24.70 0 0 0.09 30.30 ETRONIX 30.3kg/0.09s STD DIGI SERVO HV METAL GEAR WATERPROOF STANDARD £49.99
ET2063 0 0 0 0 0 0 0.10 32.30 ETRONIX 32.3kg/0.10s STD DIGI HIGH VOLTAGE SERVO METAL GEAR STANDARD £42.99
ET2061 0 0 0 0 0 0 0.09 15.80 ETRONIX 15.8kg/0.09s STD DIGI HIGH VOLTAGE SERVO METAL GEAR STANDARD £42.99
ET2062 0 0 0 0 0 0 0.12 20.30 ETRONIX 20.3kg/0.12s STD DIGI HIGH VOLTAGE SERVO METAL GEAR STANDARD £41.99
ET2060 0 0 0 0 0 0 0.07 11.25 ETRONIX 11.25kg/0.07s STD DIGI HIGH VOLTAGE SERVO METAL GEAR STANDARD £42.99
ET2048 0 0 0.16 15.30 0 0 0 0 ETRONIX 15.3kg/0.16s STANDARD DIGITAL SERVO METAL GEAR STANDARD £15.99
ET2049 0 0 0.16 20.30 0 0 0 0 ETRONIX 20.3kg/0.16s STANDARD DIGITAL SERVO METAL GEAR STANDARD £17.99
ET2047 0 0 0.13 9.30 0 0 0 0 ETRONIX 9.3kg/0.13s STANDARD DIGITAL SERVO METAL GEAR STANDARD £14.99
ET2046 0 0 0.12 6.20 0 0 0 0 ETRONIX 6.2kg/0.12s STANDARD SERVO STANDARD £8.49
ET2036 0 0 0.09 9.50 0 0 0 0 ETRONIX 9.5kg/0.09s LP DIGI SERVO CORELESS METAL GEAR STANDARD LOW PROFILE £41.99
ET2045 0 0 0.12 4.00 0 0 0 0 ETRONIX 4kg/0.12s STANDARD SERVO STANDARD £7.49
ET2035 0 0 0.11 8.20 0 0 0 0 ETRONIX 8.2kg/0.11s LP DIGI SERVO METAL GEAR STANDARD LOW PROFILE £21.99
ET2027 0 0 0.12 12.10 0 0 0 0 ETRONIX 12.1kg/0.12s MINI DIGI SERVO CORELESS METAL GEAR MINI £46.99
ET2026 0 0 0.09 6.60 0 0 0 0 ETRONIX 6.6kg/0.09s MINI DIGISERVO METAL GEAR MINI £26.99
ET2016 0 0 0.11 3.50 0 0 0 0 ETRONIX 17G 3.5kg/0.11s MICRO DIGITAL SERVO METAL GEAR MICRO £11.99
ET2025 0 0 0.10 3.40 0 0 0 0 ETRONIX 3.4kg/0.10s MINI SERVO MINI £8.99
ET2015 0 0 0.11 3.50 0 0 0 0 ETRONIX 17G 3.5kg/0.11s MICRO SERVO METAL GEAR MICRO £8.99
ET2008 0 0 0.10 2.50 0 0 0 0 ETRONIX 9G 2.5kg/0.10s MICRO DIGITAL SERVO METAL GEAR MICRO £9.99
ET2007 0 0 0.07 1.90 0 0 0 0 ETRONIX 9G 1.9kg/0.07s MICRO DIGITAL SERVO MICRO £6.25
ET2006 0 0 0.10 2.50 0 0 0 0 ETRONIX 9G 2.5kg/0.10s MICRO SERVO METAL GEAR MICRO £7.49
ET2005 0 0 0.07 1.90 0 0 0 0 ETRONIX 9G 1.9kg/0.07s MICRO SERVO MICRO £4.49
ET0018 0.19 8.10 0.16 9.20 0 0 0 0 ETRONIX ES092 9.2KG DIGITAL STD WATERPROOF MG SERVO STANDARD £18.99
ET0016 0.30 4.50 0.25 5.30 0 0 0 0 ETRONIX ES045 4.5KG ANALOG STD WATERPROOF SERVO STANDARD £9.99
ET0015 0 0 0.16 3.00 0 0 0 0 ETRONIX ES030 3.0KG ANALOG STANDARD WATERPROOF SERVO STANDARD £7.99
ET0012 0.18 9.00 0.16 10.20 0 0 0 0 ETRONIX 9.0KG HEAVY DUTY METAL METAL GEARED STD WATERPROOF SERVO STANDARD £18.99
ET0005HM 0.12 1.60 0.10 1.80 0 0 0 0 ETRONIX 9G 1.6KG/0.12S MICRO SERVO W/HALF METAL GEARS MICRO £7.99
ET0006 0.13 2.60 0.11 3.00 0 0 0 0 ETRONIX 17G 2.6KG/0.11S MICRO SERVO MINI £10.49
ET0005 0.12 1.60 0.10 1.80 0 0 0 0 ETRONIX 9G 1.6KG/0.12S MICRO SERVO MICRO £5.99

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Choosing the correct servo - FAQ

Size - What space do I have? The size of the modal and the servo mounting dimensions can dictate the servo that you choose. There are a few different footprint classes (JUMBO, STANDARD, MINI and MICRO) and depths so there should be a servo to fit your needs.

Torque - What is the size and weight of the control surface that you are moving? The bigger and heavier the control surface on the model, the higher the servo torque needed. What is the length of the servo I am using? The longer the servo arm used the higher the servo torque needs to be to compensate.

Speed - Do you require a very fast response to make frequent corrections or have instantaneous throttle response? A fast or slow servo will alter the 'feel', it's similar to having positive or negative exponential set on your transmitter.

Voltage - What battery voltage are you using? All servos can be used with 6 volt DC supply. If you want to use the newest 2S LiPo receiver batteries you will need to choose the 7.4volt compatible servos. These servos can also be used with lower voltages but the performance will be lower.

Gear Train Material - Is this a large or powerful model? Will the model be used aggressively or with sudden high impact/energy loading? Metal gears should be used if your answer is yes. The gears are high-precision Taiwan-made aluminium with hard anodizing. For lower power less aggressive model use; or where super-lightweight is required for models, then industrial plastic gears are the perfect choice. Remember, if in doubt use metal gears.

Motor - Is the model subject to high vibration requiring fast response? Most of the range uses Coreless technology which offers a reliable and powerful motor, this is the gold standard. Brushless motors give the platinum standard, resulting in ultimate power, quicker torque, faster response, greater efficiency and incredibly durable.

Bearings - Is the model used in a high vibration environment? Most servos use a double ball race on the output shaft to ensure long life, accurate control and improved resolution. Twin ball race is the best on larger, higher vibration and powerful models. A single ball race is suitable for lightweight, low vibration and smaller models.

Servo Case Material - Will the servo be moving from endpoint to endpoint and used aggressively? Aluminium is used to improve heat dissipation from the motor but this has a slightly higher weight over the plastic case models. A full aluminium case also provides a more stable platform for the gear trains and mounting points and is used in larger scale models.

Weight - Where is the servo mounted? Will the weight of the servo have an effect on the performance of the model? Choose the lightest servo or move a heavier servos position to reduce the effect on the model. Remember, you can save weight by using aluminium arms and titanium turnbuckles.

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