Jul 11, 2009, 02:29 PM Registered User Antony (France) Joined Sep 2003 3,382 Posts Discussion Dualsky Calculator Hi I was asked to open a thread upon Dualsky Calculator freeware Louis (the author) Last edited by Fourdan; Aug 31, 2013 at 03:24 PM.
 Jul 11, 2009, 02:47 PM Registered User Toronto Canada Joined Dec 2002 5,609 Posts
 Jul 11, 2009, 06:56 PM homo ludens modellisticus Netherlands, GE, Nijmegen Joined Feb 2001 13,811 Posts Louis, what is the difference between the MM_calc derivatives. Only the motor database? Prettig weekend Ro
 Jul 12, 2009, 03:40 AM Registered User Antony (France) Joined Sep 2003 3,382 Posts Hi Ron Yes the major part of the core is the same. Dualsky is updated regularly. But for older derivatives, the updating is not so frequent. Louis
Jul 17, 2009, 11:47 AM
Registered User
BRISTOL , ENGLAND
Joined Jun 2006
99 Posts
interpreting the DUALSKY Caclulator info

Louis, is this screen shot what I can expect when flying at full throttle or static with the plane held on a test stand?
thanks Alistair

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 Jul 17, 2009, 12:24 PM homo ludens modellisticus Netherlands, GE, Nijmegen Joined Feb 2001 13,811 Posts Me bad But I see you found the corresponding Dualsky Calc thread :0 Prettig weekend Ron
 Jul 17, 2009, 03:47 PM Registered User Antony (France) Joined Sep 2003 3,382 Posts Alistair Here is my reply to your question on SC thread: Concerning static thrust - in flight motor point a) If you scroll the prop selector, you travel the graph WOT and static test b) If you consider in-flight loading: The curve efficiency versus current is valid (motor features) but you don't know where you are in amps. Influence of partial throttle and air speed that causes current(load) reducing. For some (high) air speed the prop is "transparent" and it is equivalent to no load (only iron losses, hysteresis and eddy currents) This happens close to "pitch speed" For higher speeds, the motor could be a "wind-generator". Louis
 Jul 19, 2009, 06:17 PM Registered User Antony (France) Joined Sep 2003 3,382 Posts New version 3.09 Hi Dualsky_Calc new version 3.09 in post #1 to download Louis
 Jun 16, 2010, 04:55 AM Registered User Antony (France) Joined Sep 2003 3,382 Posts Dualsky Calc new version 3.10 Hi Dualsky_Calc new version 3.10 in post #1 to download new motor XM540TF 21.5 turns added TF means Track & Field (with Hall sensors) An associated ESC (sensored - sensorless) is available Louis
Dec 28, 2010, 04:29 PM
Registered User
Antony (France)
Joined Sep 2003
3,382 Posts
XM6355DA-12 mini review

Hi
Dualsky (Shanghai) recently sent to me one new motor to test := XM6355DA-12
"DA competition" series is new and slightly different compared to "CA" series.

The motor is enclosed in a pretty black card box. Grey foam cushions protect the motor and the cables. Excellent presentation. A label on the box side indicates the serial number 57606, 222 rpm/V, weight 566g
prop range 20x13, class 4.5-4.8 kg light F3A plane + a bar code.
Remark : on the rotor the label is printed Kv 223 rpm/V

It is a 53x25 mm stator, with 12 slots and 14 poles.

My measurements
Weight 564g (motor) + 24.5g (prop fixing accessories)
Shaft 7.98mm (free 46mm stator side, end threaded 8mm fine pitch 1mm, on 22mm)
Stator fixing is standard via 4 M4 (on circle 44mm), no cross.
(Dualsky is making a cross and backmount but I have not yet this system)

Outer diameter (rotor flux ring) 62.43mm
Body length 65mm (including the stator cylindrical shoulder for centering, diameter 23.95mm, where we see one ball bearing NMB Thailand 1980KK, that is metric 8-19-7 mm). No circlip.
Connectors gold slotted 4mm male, cables length around 80mm.
Windings probably 12 turns delta.

End bell with 5 venting holes and 5 spokes. No threaded holes on the spokes.
Propeller is to be fixed only on the stator side, via a conical slotted ring + wafers + nut (only one)
Shaft (length 118.5mm) is equipped, at both ends, with M4 threaded holes

Internal resistance phase-phase. I use a CC 5A power supply and a DMM with good gold 4mm Y harness.
Blue-Red 157mV, Red-Black 157mV, Black-Blue 157mV at 20°C ambient temperature.
So average Rm is 31.4 milliohm, windings balance is perfect.

Second test is no load on my bench with my Medusa PowerPro device and the WindowsXP ProView software.
The number of poles is set to 14.
ESC used is a FM 120A HV-10S opto, timing "auto", 8 kHz. Servo tester is a Leton.
My power supply is a MRGN 900 on range 60V 15A
I ran the motor WOT 8 minutes at 24V for a warm-up and then I change by stair case the voltage from up 32V down to 9V. Each voltage step is maintained around 25-30 seconds.
Save and export the results to EXCEL for analysis.

a) at 32.1 volt Io 2.16A, 69.2watt , 7226 rpm, flange temp 31°C
taking an Rm around 33.6 milliohm, we find
Kv 226 rpm/V peakeff = 90.7% located at Ietamax = 45.4A and Petamax = 1457W

b) at 24 volt Io 1.66A , 39.8watt , 5393 rpm, flange temp 31°C
Kv 225.2 rpm/V peakeff = 90.6% located at Ietamax = 34.4A and Petamax = 825W

c) at 12 volt Io 1.10A , 13.2watt , 2690 rpm, flange temp 30.5°C
Kv 224.1 rpm/V peakeff = 89.2% located at Ietamax = 19.8A and Petamax = 239W

An average Kv is around 225 rpm/V (voltage range 24V .. 32V)
From these testings I deduce one important curve : iron losses ( no load VxIo ) versus rpm.

The XM6355DA-12 is an excellent motor. Excellent design and manufacturing.
Kv 225 rpm/V is close to announced Kv (222-223)
Good efficiency and it runs smoothly.
This motor is very good to be used in the range 24-44V with an appropriate prop function of the voltage.
I will add soon on Dualsky Calc new version.

Louis

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Dec 28, 2010, 04:32 PM
Registered User
Antony (France)
Joined Sep 2003
3,382 Posts
XM6360DA-11 mini review

Hi
Dualsky recently sent to me one new motor to test = XM6360DA-11
"DA competition" series is new and slightly different compared to "CA" series.

The motor is enclosed in a pretty black card box. Grey foam cushions protect the motor and the cables. Excellent presentation. A label on the box side indicates the serial number 57630, 200 rpm/V, weight 655g
prop range 21x14, class F3A plane + a bar code.

It is a 53x30 mm stator, with 12 slots and 14 poles.

My measurements
Weight 647g (motor) + 24.5g (prop fixing accessories)
Shaft 7.98mm (free 46mm stator side, end threaded 8mm fine pitch 1mm, on 22mm)
Stator fixing is standard via 4 M4 (on circle 44mm), no cross.
Outer diameter (rotor flux ring) 62.43mm
Body length 70mm (including the stator cylindrical shoulder for centering, diameter 23.95mm, where we see one ball bearing NMB Thailand 1980KK, that is metric 8-19-7 mm). No circlip.
Connectors gold slotted 4mm male, cables length around 80mm.
Windings probably 12 turns delta.

End bell with 5 venting holes and 5 spokes. No threaded holes on the spokes.
Propeller is to be fixed only on the stator side, via a conical slotted ring + wafers + nut (only one)
Shaft (length 123.5mm) is equipped, at both ends, with M4 threaded holes

Internal resistance phase-phase. I use a CC 5A power supply and a DMM with good gold 4mm Y harness.
Blue-Red 149mV, Red-Black 149mV, Black-Blue 149mV at 20°C ambient temperature.
So average Rm is 29.8 milliohm, windings balance is perfect.

Second test is no load on my bench with my Medusa PowerPro device and the WindowsXP ProView software.
The number of poles is set to 14.
ESC used is a FM 120A HV-10S opto, timing "auto", 8 kHz. Servo tester is a Leton.
My power supply is a MRGN 900 on range 60V 15A
I ran the motor WOT 8 minutes at 36V for a warm-up and then I change by stair case the voltage from up 37V down to 9V. Each voltage step is maintained around 25-30 seconds.
Save and export the results to EXCEL for analysis.

a) at 37.3 volt Io 2.54A, 94.6watt , 7635 rpm, flange temp 31°C
taking an Rm around 32 milliohm, we find
Kv 205 rpm/V peakeff = 90.9% located at Ietamax = 54.5A and Petamax = 2032W

b) at 24.1 volt Io 1.70A , 39.8watt , 4907 rpm, flange temp 31°C
Kv 204 rpm/V peakeff = 90.7% located at Ietamax = 35.5A and Petamax = 856W

An average Kv is around 204 rpm/V (voltage range 24V .. 37V)
From these testings I deduce one important curve : iron losses ( no load VxIo ) versus rpm.

The XM6360DA-11 is an excellent motor. Excellent design and manufacturing.
Kv 204 rpm/V is close to announced Kv (200)
Good efficiency and it runs smoothly.
This motor is very good to be used in the range 24-48V with an appropriate prop function of the voltage.
I will add soon on Dualsky Calc new version.

Louis

# Images

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Dec 28, 2010, 04:37 PM
Registered User
Antony (France)
Joined Sep 2003
3,382 Posts
XM6360DA-12 mini review

Dualsky recently sent to me one new motor to test = XM6360DA-12
"DA competition" series is new and slightly different compared to "CA" series.

The motor is enclosed in a pretty black card box. Grey foam cushions protect the motor and the cables. Excellent presentation. A label on the box side indicates the serial number 57634, 188 rpm/V, weight 655g
prop range 20x13 22x12, up to 35cc gasoline model + a bar code.

It is a 53x30 mm stator, with 12 slots and 14 poles.

My measurements
Weight 640g (motor) + 24.5g (prop fixing accessories)
Shaft 7.98mm (free 46mm stator side, end threaded 8mm fine pitch 1mm, on 22mm)
Stator fixing is standard via 4 M4 (on circle 44mm), no cross.
Outer diameter (rotor flux ring) 62.43mm
Body length 70.4mm (including the stator cylindrical shoulder for centering, diameter 23.95mm, where we see one ball bearing NMB Thailand 1980KK, that is metric 8-19-7 mm). No circlip.
Connectors gold slotted 4mm male, cables length around 80mm.
Windings probably 12 turns delta.

End bell with 5 venting holes and 5 spokes. No threaded holes on the spokes.
Propeller is to be fixed only on the stator side, via a conical slotted ring + wafers + nut (only one)
Shaft (length 123.5mm) is equipped, at both ends, with M4 threaded holes

Internal resistance phase-phase. I use a CC 5A power supply and a DMM with good gold 4mm Y harness.
Blue-Red 179mV, Red-Black 179mV, Black-Blue 179mV at 20°C ambient temperature.
So average Rm is 35.8 milliohm, windings balance is perfect.

Second test is no load on my bench with my Medusa PowerPro device and the WindowsXP ProView software.
The number of poles is set to 14.
ESC used is a FM 120A HV-10S opto, timing "auto", 8 kHz. Servo tester is a Leton.
My power supply is a MRGN 900 on range 60V 15A
I ran the motor WOT 4 minutes at 40V for a warm-up and then I change by stair case the voltage from 40V down to 8V. Each voltage step is maintained around 25-30 seconds.
Save and export the results to EXCEL for analysis.

a) at 40.4 volt Io 2.32A, 93.7watt , 7532 rpm, flange temp 31°C
taking an Rm around 38.3 milliohm, we find
Kv 187 rpm/V peakeff = 90.8% located at Ietamax = 49.4A and Petamax = 1996W

b) at 36 volt Io 2.05A , 73.8watt , 6721 rpm, flange temp 31.8°C
Kv 187 rpm/V peakeff = 90.8% located at Ietamax = 43.7A and Petamax = 1575W

c) at 24.2 volt Io 1.50A , 36.4watt , 4490 rpm, flange temp 31.8°C
Kv 186 rpm/V peakeff = 90.4% located at Ietamax = 30.7A and Petamax = 743W

An average Kv is around 187 rpm/V (voltage range 24V .. 40V)
From these testings I deduce one important curve : iron losses ( no load VxIo ) versus rpm.

The XM6360DA-12 is an excellent motor. Excellent design and manufacturing.
Kv 187 rpm/V is close to announced Kv (188)
Good efficiency and it runs smoothly.
This motor is very good to be used in the range 24-48V with an appropriate prop function of the voltage.
I will add soon on Dualsky Calc new version.

Louis

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 Jan 04, 2011, 04:39 PM Registered User Antony (France) Joined Sep 2003 3,382 Posts Dualsky Calc new version 3.11 Hi Dualsky_Calc new version 3.11 in post #1 to download news : XM63xxDA competition series added 7 new motors Regards Louis
 Jun 18, 2011, 06:43 AM Registered User Antony (France) Joined Sep 2003 3,382 Posts Dualsky Calc new version 3.12 Hi Dualsky_Calc new version 3.12 in post #1 to download news : XM3530EA-xx, XM3536EA-xx, XM3542EA-xx, XM3548EA-xx added (15 new motors from new EA series) Regards Louis
 Jun 27, 2011, 09:11 AM Registered User Antony (France) Joined Sep 2003 3,382 Posts Dualsky Calc new version 3.13 Hi Dualsky_Calc new version 3.13 in post #1 to download news : XM2830EA-xx, XM2834EA-xx, XM2838EA-xx added (13 new motors / v312 from new EA series) Now there are 89 Dualsky motors references Regards Louis