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Dr. Mad Thrust 70mm 11-Blade Alloy EDF 3900kv Motor - 1300watt (4S) Counter rotating

Dr. Mad Thrust 70mm 11-Blade Alloy EDF 3900kv Motor - 1300watt (4S) Counter r...

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$59.26
Rating:
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Weight:
265 g
SKU:
9107000280-0

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Product
Description

Introducing our Dr. Mad Thrust high performance EDF series. The Dr. has been hard at work to bring you MAD power EDF systems with excellent quality and high performance at a price that will leave some cash in your pocket.

The Dr. Mad Thrust EDF series are pre-assembled and dynamically balanced making them easy to fit, with no unit assembly required. As well as high power, these fans have excellent cooling and run so smoothly, the sound is amazing. There is also no housing distortion unlike plastic fans. This high quality, powerful fan is a great way to upgrade your 68mm EDF jet to a speeding missile in around an hour!

Dr. Mad Thrust EDF series - just the right prescription for your model!
 
Features:
• Pre-assembled
• Factory dynamically balanced
• High power with superior cooling
• High quality construction
• Fully serviceable
• Fast to fit
• No housing distortion
 
Specs:
EDF Inner Diameter: 70mm
Outer Diameter: 72mm
Construction: Alloy
Weight: 190g
Max RPM: 62000
Motor Type: B2839 3900kv Counter rotating
Max Power: 1300W
Continuous Power: 1200W
Max Voltage: 14.8V (4S)
Max Amps: 79A
Max Thrust: 1.6kg

 

Product
Specifications

Additional Information

  • SKU:
    9107000280-0
  • Brand:
    N/A
  • Weight(g)
    265.00
  • Length
    180.00
  • Width:
    90.00
  • Height:
    130.00
Community
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This consumes too much energy from the 4 cells. Yo and used lipo 4 turnigy cells of 65c 1400mha. Only this consumes it in 1 minute with half throtle ..
Why is this happening? I then use a lipo 4 cells of 16000mha. This yielded approx. 8 min. Why does it consume too much energy?
playlist_add_check Overall
trending_up Value
verified_user Quality
playlist_add_check Overall
trending_up Value
verified_user Quality
This consumes too much energy from the 4 cells. Yo and used lipo 4 turnigy cells of 65c 1400mha. Only this consumes it in 1 minute with half throtle ..
Why is this happening? I then use a lipo 4 cells of 16000mha. This yielded approx. 8 min. Why does it consume too much energy?
playlist_add_check Overall
trending_up Value
verified_user Quality
verified_user Quality
playlist_add_check Overall
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Is there a typo.
Two 570W EDF would produce 3.97Kg of thrust! That is 1.975KG per 570W! 3.4g/W!
For this 12 blades 3900kv EDF 4 cells, 570W at around 35A might produce 1Kg at the best which is 1.75gram per watt. I brought three of this edf, each would give me 270g at 100W which is the best already. At 700W it give me only 960g, all measure with thrust meter.

verified_user Quality
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verified_user Quality
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I purchased qty 2 of and have fitted them to my scratch built A320 airbus. Awsome quality alloy finish and power output is amazing. Running them through 90amp YEP speed controllers with power supplied via 2 x 4 cell 3300mAh lipos with 40 constant discharge.
Using an inline watt meter initial watts were 570 settling back to 530 watts.
These units sure produce thrust but do require good batteries. I am getting static thrust of 3.97Kg from my model which is darn good.
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