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BMS-303-JST Ultra Micro Servo 0.7kg / .11sec / 3.4g

BMS-303-JST Ultra Micro Servo 0.7kg / .11sec / 3.4g

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SKU:
BMS-303-JST
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BMS-303-JST Ultra Micro Servo 0.7kg / .11sec / 3.4g
High performance Japanese Coreless motor.   
Weight: 3.4 grams / 0.13 oz.
Dimensions: 19 x 7.5 x 15.5 mm / 0.75 x 0.29 x 0.61 inch
Torque At 4.8V: 0.7kg/cm , 11 oz/in
Speed At 4.8V: 0.11sec / 60 deg at no load
Plug type: JST
  • SKU BMS-303-JST
  • Brand -
  • Shipping Weight 25.0000
  • Length 120.00
  • Width 22.00
  • Height 75.00
  • Torque(kg)(min. 0.01kg) 0.70
  • Speed (Sec/60deg) 0.11
  • A(mm) 21.00
  • B(mm) 20.00
  • C(mm) 18.00
  • D(mm) 8.00
  • E(mm) 26.00
  • F(mm) 13.00
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Overall good servo, somewhat sloppy but resistant gears.
Price is overestimated and should be lower for this size and quality.
Used them in F5 400 class with some problems (one servo became jerky after circa 100 flights). Now have two of them in 1,5 m flying wing.

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Overall good servo, somewhat sloppy but resistant gears.
Price is overestimated and should be lower for this size and quality.
Used them in F5 400 class with some problems (one servo became jerky after circa 100 flights). Now have two of them in 1,5 m flying wing.

very good servo, speed, centeruing, resolution are very fine!

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very good servo, speed, centeruing, resolution are very fine!

Very nice servo, I use the Indoor model airplane.

connector is not compatible with 2.4Ghz FHSS Compatible A-Micro 5CH Receiver (Hitec Minima compatible) has different dimensions (therefore the 4 stars)

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Very nice servo, I use the Indoor model airplane.

connector is not compatible with 2.4Ghz FHSS Compatible A-Micro 5CH Receiver (Hitec Minima compatible) has different dimensions (therefore the 4 stars)

exactly the same as the bms303 just got lighter jst plug brilliant servo

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exactly the same as the bms303 just got lighter jst plug brilliant servo

Great servo for it's price and weight.

A lot better than the 2,5g jst servo both in resolution, power, speed and precision.

So if you can handle the 0,8g more weight this is an excellent option for smaller planes.

Using them in a 60cm scratchbuilt Yak55 weighing 83g rtf. Perfect for 3d where the 2,5g was not strong or precise enough

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Great servo for it's price and weight.

A lot better than the 2,5g jst servo both in resolution, power, speed and precision.

So if you can handle the 0,8g more weight this is an excellent option for smaller planes.

Using them in a 60cm scratchbuilt Yak55 weighing 83g rtf. Perfect for 3d where the 2,5g was not strong or precise enough

The JST mini-connector wiring has not standardized yet, its up to you to verify the correct polarity.

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The JST mini-connector wiring has not standardized yet, its up to you to verify the correct polarity.

The JST mini-connector wiring has not standardized yet, its up to you to verify the correct polarity.

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The JST mini-connector wiring has not standardized yet, its up to you to verify the correct polarity.

Changing red and black cables for operation with ar6300 was easy. A hobby knife is all you need.

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Changing red and black cables for operation with ar6300 was easy. A hobby knife is all you need.

Super micro servo using on my 50g micro flyer. Fits the plane perfectly!

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Super micro servo using on my 50g micro flyer. Fits the plane perfectly!

Despite reading about the wiring issues, I plugged them into my AR6300 without changing the wires around. Anyway, despite the strong smell of burning electronics they still perform quite well (after swapping the black and red wire around). However, the JST plugs are very difficult to extract and tugging on the wires is not an option as they tend to break or pull out from the plug. I also broke one of the gears recently during a landing.

verified_user Quality:
trending_up Value:
playlist_add_check Overall:

Despite reading about the wiring issues, I plugged them into my AR6300 without changing the wires around. Anyway, despite the strong smell of burning electronics they still perform quite well (after swapping the black and red wire around). However, the JST plugs are very difficult to extract and tugging on the wires is not an option as they tend to break or pull out from the plug. I also broke one of the gears recently during a landing.

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