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Multi Rotor Helicopters - Tandem Multi Rotor Helicopters - Tandem


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Old 12-21-2016, 04:02 PM   #1
techmp
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Join Date: May 2016
Location: Guilford
Default Twinn Rexx returning in 2017

Over the years since the kit production stopped, I have received many dozens of emails requesting a kit and or body. So a little while back I decided to do it again.

The latest information can be found here: http://www.tech-mp.com/twinn_rexx.htm

I am looking for motor suggestions - 650 to 800 watts with KV around 1900.
Most of the motors I used to know don't seem to exist anymore...

Joe
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Old 01-02-2017, 03:20 PM   #2
techmp
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Join Date: May 2016
Location: Guilford
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Found this Scorpion motor HK-2520-1880KV

Sounds like a real powerhouse...800 watts. We shall see. $59 on ebay.


http://www.scorpionsystem.com/catalo...5/HK_2520_1880

Specifications

Stator Diameter 25.0 mm (0.98 in)
Stator Thickness 20.0 mm (0.79 in)
No. of Stator Arms 12
Magnet Poles 10
Motor Wind 8 Turn Delta
Motor Wire 11-Strand 0.25mm
Motor Kv 1880Kv RPM/Volt
No-Load Current (IO/10V) 2.25 Amps
Motor Resistance (Rm) 0.026 Ohms
Max Continuous Current 38 Amps
Max Continuous Power 800 Watts
Weight 104 Grams (3.64 oz)
Outside Diameter 31.5 mm (1.24 in)
Shaft Diameter 3.5 mm (0.14 in)
Body Length 39.6 mm (1.56 in)
Overall Shaft Length 57.50 mm (2.46 in)
Max Lipo Cell 6s
Max Peak Current 50A (2 seconds)
Max Peak Power 1050 Watts (2 seconds)
Motor Timing 5deg
Drive Frequency 8kHz


Joe
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Old 01-05-2017, 05:46 PM   #3
Flyingzook
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Join Date: Apr 2013
Location: Aussie
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There is also the new align 470 motor,
It's 1800kv, 6s and 890w cont/1300w burst


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