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Old Aug 28, 2011, 03:30 AM
Registered User
UK, North Down, Bangor
Joined Nov 2009
1,593 Posts
Weight: 2Kg
Motor: Turnigy 3536b 1400Kv
Prop: 9x6 APC
ESC: Turnigy Super Brain 60A (noisy!)
Flight Battery: Turnigy 5000mAh 3S 20C
Static Thrust: 1.4Kg @ 32A
Cruise: 1/4 to 1/3 throttle (linear), amps unknown

Servos: MG-14s + HXT900 for pan
Rx: Chainlink UHF
BEC: Turnigy 5A uBEC

Electronics Battery: Turnigy 1300mAh 3S

Flight Cam: Hobbyking 12V CCD (PAL)
Vtx: Sunsky 2.4Ghz

Recording cam: GoPro Hero HD
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Old Sep 15, 2011, 06:27 PM
2Vision-Air
bakchos's Avatar
Canada, QC, Blainville
Joined Aug 2009
2,151 Posts
Weight: 1.9Kg
Motor: Turnigy 3536b 1400Kv
Prop: 9x6 APC
ESC: Turnigy Super Brain 40A
Flight Battery: 2 x Turnigy 30000mAh 3S 20C
Cruise: 1/3 throttle (linear), 6 amps
RVOSD 5
Servos: all hxt900
Rx: Chainlink UHF
BEC: Turnigy 3A uBEC

Electronics Battery: Turnigy 1000mAh 3S

Flight Cam: 600 tvl wdr 12V from security camera 2000
Vtx: NGHobbies 1.2Ghz 800mw

Recording cam: Aiptek striped down (HD)

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Last edited by bakchos; Oct 15, 2011 at 03:25 PM. Reason: New battery and OSD
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Old Sep 15, 2011, 08:10 PM
I should be flying right now!
al1242's Avatar
United States, IN, Crown Point
Joined May 2010
450 Posts
Weight: 2.1Kg
Motor: Scorpion SII-3014-1220kv
Prop size: 10x5 APC
ESC: Castle ICE 50 on the side of the fuse, internal 5A bec
Servos used: Hitec HS65HB
Flight battery: 1 turnigy 3S 5000mA 25C, LC filter for video
Flight cam: RMRC540
VTX: Lawmate 1W 1.3 on the wing
VTX antenna: IBcrazy V
RX: Dragon Link
RX antenna: Stock DL
Stabilizer: Eagle Tree Guardian
OSD: ET OSD Pro
OSD to VTX/CAM: Standard 24awg servo wires
Cruise minimal consumption: 8A
Climb minimal consumption: 20A
Max speed: 34A
Max distance reached: 5 miles (10 miles round trip)
RTX: Dragon Link
RTX antenna: Stock Long Range 1/2 wave
VRX 1 and 2: Lawmate 1.3Ghz
Diversity: Eagle Tree Eagle Eyes
VRX 1 antenna: DIY IBcrazy biquad on readymade tracker
VRX 2 antena: stock omni
Ground station battery: 12 volt gel cell 25A/hr
Flight recording: Pinnacle video recorder to a 500G portable Hard drive
Flight control viewing: 19" LCD
HD recording: GoPro mount in case.
Navigation lights for nite flights.


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Old Sep 22, 2011, 08:14 AM
Registered User
Vilniz's Avatar
Latvija, Ventspils
Joined Apr 2011
121 Posts
Also stole format

Weight: 2-2.2kg (with or without GoPro)
Motor: Turnigy L3015A-1000 Brushless Motor
Prop size: 10x7 3 blade TGY
ESC: Turnigy 85A
Separate BEC: HobbyWing 8-15 amp
Servos used: 4 TowerPro MG90S +2 HTX900 for flaps
Flight battery: 3S 3000mA x2
Video battery: 3S 800mA 20C
Flight cam: Fatshark
VTX: 1.2Ghz 1500mW
RX: Futaba FASST
RX antenna: stock diversity
Stabilizer: Ardupilot Mega
OSD: Remzibi OSD
LRS: 1W 2.4Ghz booster to standard futaba 8fg
Max speed: So far, 120km/h
Max distance reached: So far, 1.6 km and 1km height
Flight recording: Acer One with usb capture
Flight control viewing: Fatshark goggles

Setup Target: reach 2km height (looks like I'm crazy)

Pictures here:
http://www.rcgroups.com/forums/showp...postcount=9737
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Last edited by Vilniz; Sep 30, 2011 at 04:52 AM. Reason: Max distance, height changed :)
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Old Oct 15, 2011, 02:51 PM
Team Basement RC
Yuvski's Avatar
Canada, ON, Aurora
Joined Jul 2010
130 Posts
Quote:
Originally Posted by bakchos;

[IMG
http://i1122.photobucket.com/albums/l529/bakchoss/Skywalker%202011/004.jpg[/IMG]
Sorry this is off topic:

That's a really nice paint scheme

what did you use to paint the plane?
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Old Oct 15, 2011, 03:26 PM
2Vision-Air
bakchos's Avatar
Canada, QC, Blainville
Joined Aug 2009
2,151 Posts
Quote:
Originally Posted by Yuvski View Post
Sorry this is off topic:

That's a really nice paint scheme

what did you use to paint the plane?
Thanks, its Krylon spray paint and krylon primer (grey)
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Old Oct 24, 2011, 06:40 PM
Registered User
Joined Aug 2010
873 Posts
I did some testing

The Turnigy 3536/1450kv seems to be a popular Skywalker motor. I had a little time today to do a bunch of efficiency tests to figure out which prop gave the most thrust for the least power. I used a calibrated scale and wattmeter to come up with my results. Although not laboratory grade data, this is pretty close and a lot can be learned from the following (in my opinion).

Hobbywing 60A ESC, 3S 20C Battery.

9x4 Master Airscrew

5.0A = 310g thrust
10.2A = 535g thrust
14.25A = 690g thrust
20.5A = 920g thrust
22.9A = 1kg thrust
31.0A MAX = 1235g thrust

9x5 APC

5.1A = 310g thrust
10.3A = 520g thrust
15.0A = 665g thrust
20.3A = 825g thrust
25.0A = 980g thrust
34.0A = 1200g thrust
40.1A MAX = 1330g thrust

9x5 Master Airscrew

5.2A = 300g thrust
10.35A = 515g thrust
14.5A = 655g thrust
20.3A = 840g thrust
25.0A = 970g thrust
33.5A = 1200g thrust
36.5A MAX = 1275g thrust

9x6 APC

5.6A = 310g thrust
11.15A = 470g thrust
16.00A = 585g thrust
23.5A = 760g thrust
52.0A MAX = 1235g thrust

8 x 5 APC

5.25A = 225g thrust
10.4A = 380g thrust
14.8A = 495g thrust
20.4A = 635g thrust
test stopped because obviously inefficient.


Interesting that the 9x6 pulled 52A yet had less thrust than the 9x5 Master Airscrew.

Since I like to cruise around at ~5 - 6 Amps and climb around ~13-15 Amps, I think the 9x4 Master Airscrew is the most efficient prop for this motor. I thought maybe the 9x5 would work but look at how many more amps you have to pull to equal the 9x4 at max power.

============

Just for grins, I had a Turnigy 3542/1000kv 6 pole laying around. I thought maybe I could find a more efficient setup for the Skywalker than the Turnigy 3536/1450kv.

I used the Hobbywing 60A ESC and 3S 20C and 4S 20C batteries and a 9x9 APC prop.

9x9 APC 4S battery

4.3A = 245g thrust
10.4A = 490g thrust
14.6A = 620g thrust
20.0A = 800g thrust
28.0A = 1025g thrust
test stopped ... I think this motor is more suited for bigger props since lots of amps for little thrust.

9x9 APC 3S battery

4.3A = 190g thrust
10.5A = 395g thrust
15.0A = 535g thrust
test stopped...amazingly low thrust for a 9x9 prop...I learned something today.

Hope this is useful to someone out there.......
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Old Oct 24, 2011, 07:05 PM
Nakelp
nakelp86's Avatar
United States, NJ, Union
Joined Sep 2004
6,793 Posts
Thx dude, this is great
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Old Oct 25, 2011, 06:40 AM
Registered User
Joined Aug 2010
873 Posts
More results

As requested, I have a few more tests for possible Skywalker motor/prop combinations. These tests are with a Turnigy 3542/1000kv 6 pole.

Hobbywing Pentium 40A ESC, 4S 20C Lipo

9x6 APC

5.0A = 380g thrust
11.0A = 695g thrust
15.1A = 830g thrust
21.5A = 1030g thrust
29.0A = 1280g thrust
35.0A MAX = 1405g thrust

9x5 Master Airscrew

4.9A = 405g thrust
9.8A = 700g thrust
15.2A = 980g thrust
23.0A = 1300g thrust
25.6A = 1420g thrust
25.9A MAX = 1425g thrust

9.5x7.5 Parkzone T28 prop

5.1A = 420g thrust
10.0A = 710g thrust
15.0A = 930g thrust
21.4A = 1160g thrust
31.0A = 1470g thrust
43.0A MAX = 1800g thrust

9x4 APC

4.5A = 390g thrust
5.3A = 430g thrust
8.3A = 625g thrust
10.6A = 775g thrust
13.9A = 950g thrust
15.0A = 1020g thrust
20.7A MAX = 1305g thrust

9x5 looks promising for this motor. On another note, the Turrnigy motor is pretty crappy, it sounded like the bearings were going to come flying out, that is something you don't get to hear when you are flying. Another indicator of imminent failure is grease slinging out from the prop hub onto the blades.

*** UPDATE Stop the presses.....It looks like the 3542/1000kv with a 9x5 is much better than the best 3536/1450kv 9x4 combo. I have two 3542/1000kv motors so I'll try the other and hope the bearings are better. I think the 3542/1000kv with 9x5 is going to be my motor with 4S batts

*** UPDATE again I added the 9x4APC to the list to try and keep all info fairly condensed. Its kind of a toss up between the 9x4APC and the 9x5APC for absolute efficiency, the 9x4 is probably the best. BUT, the 9.5x7.5 looks pretty good if you need a little more top end "grunt"
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Last edited by thekubiaks; Oct 25, 2011 at 05:11 PM.
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Old Oct 25, 2011, 11:09 AM
Registered User
cliffkot's Avatar
Joined Jun 2010
643 Posts
Quote:
Originally Posted by thekubiaks View Post
As requested, I have a few more tests for possible Skywalker motor/prop combinations. These tests are with a Turnigy 3542/1000kv 6 pole.

Hobbywing Pentium 40A ESC, 4S 20C Lipo

9x6 APC

5.0A = 380g thrust
11.0A = 695g thrust
15.1A = 830g thrust
21.5A = 1030g thrust
29.0A = 1280g thrust
35.0A MAX = 1405g thrust

9x5 Master Airscrew

4.9A = 405g thrust
9.8A = 700g thrust
15.2A = 980g thrust
23.0A = 1300g thrust
25.6A = 1420g thrust
25.9A MAX = 1425g thrust

9.5x7.5 Parkzone T28 prop

5.1A = 420g thrust
10.0A = 710g thrust
15.0A = 930g thrust
21.4A = 1160g thrust
31.0A = 1470g thrust
43.0A MAX = 1800g thrust

9x5 looks promising for this motor. On another note, the Turrnigy motor is pretty crappy, it sounded like the bearings were going to come flying out, that is something you don't get to hear when you are flying. Another indicator of imminent failure is grease slinging out from the prop hub onto the blades.

*** UPDATE Stop the presses.....It looks like the 3542/1000kv with a 9x5 is much better than the best 3536/1450kv 9x4 combo. I have two 3542/1000kv motors so I'll try the other and hope the bearings are better. I think the 3542/1000kv with 9x5 is going to be my motor with 4S batts
You might try a 9X4 with the 1000kv 4S. It might be a better choice for the preferred cruise power that you indicated earlier.

In any case, thanks for the tests. They are really helpful. I've been looking at an NTM 910KVkv 35-36 that although not spec'ed for 4s could probably be used with that battery as they have another, smaller 1100kv 35-30 (380w) model that is. The 910kv is good for 350 watts or so, perfect for those who like to slow cruise.
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Old Oct 25, 2011, 12:08 PM
Registered User
Joined Aug 2010
873 Posts
I was going to test the 9x4 but only had one left. I took that prop flying this morning on the Skywalker with the 3536/1450. The 3536/1450 has a 5mm shaft but the 3542/1000kv has an 8mm shaft and I have to ream it out (one way mission) I'll go get a new 9x4 in a minute and let you know how it comes out. Cheers
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Old Oct 27, 2011, 07:05 AM
Registered User
Joined Jul 2010
82 Posts
I am moving from glow/gas to eletrics and starting in FPV and wanted to know if someone could give me a light here on choosing a motor for my Skywalker.
I want to get a Scorpion motor but can`t decide between SII 3020-890 or SII 3020-1110.
I`m going to use it in a 4s setup. Can anyone tell me the pros and cons of both?

Best Regards

Hugo
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Old Oct 27, 2011, 09:02 AM
Team White Llama!
gundamnitpete's Avatar
Joined Jan 2008
8,144 Posts
Quote:
Originally Posted by thekubiaks View Post
As requested, I have a few more tests for possible Skywalker motor/prop combinations. These tests are with a Turnigy 3542/1000kv 6 pole.

Hobbywing Pentium 40A ESC, 4S 20C Lipo

9x6 APC

5.0A = 380g thrust
11.0A = 695g thrust
15.1A = 830g thrust
21.5A = 1030g thrust
29.0A = 1280g thrust
35.0A MAX = 1405g thrust

9x5 Master Airscrew

4.9A = 405g thrust
9.8A = 700g thrust
15.2A = 980g thrust
23.0A = 1300g thrust
25.6A = 1420g thrust
25.9A MAX = 1425g thrust

9.5x7.5 Parkzone T28 prop

5.1A = 420g thrust
10.0A = 710g thrust
15.0A = 930g thrust
21.4A = 1160g thrust
31.0A = 1470g thrust
43.0A MAX = 1800g thrust

9x4 APC

4.5A = 390g thrust
5.3A = 430g thrust
8.3A = 625g thrust
10.6A = 775g thrust
13.9A = 950g thrust
15.0A = 1020g thrust
20.7A MAX = 1305g thrust

9x5 looks promising for this motor. On another note, the Turrnigy motor is pretty crappy, it sounded like the bearings were going to come flying out, that is something you don't get to hear when you are flying. Another indicator of imminent failure is grease slinging out from the prop hub onto the blades.

*** UPDATE Stop the presses.....It looks like the 3542/1000kv with a 9x5 is much better than the best 3536/1450kv 9x4 combo. I have two 3542/1000kv motors so I'll try the other and hope the bearings are better. I think the 3542/1000kv with 9x5 is going to be my motor with 4S batts

*** UPDATE again I added the 9x4APC to the list to try and keep all info fairly condensed. Its kind of a toss up between the 9x4APC and the 9x5APC for absolute efficiency, the 9x4 is probably the best. BUT, the 9.5x7.5 looks pretty good if you need a little more top end "grunt"
this type of info is invaluable. thanks for posting!!
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Old Oct 27, 2011, 09:31 AM
RTFM
octane81's Avatar
Antarctica
Joined Oct 2010
1,167 Posts
Quote:
Originally Posted by thekubiaks View Post
I was going to test the 9x4 but only had one left. I took that prop flying this morning on the Skywalker with the 3536/1450. The 3536/1450 has a 5mm shaft but the 3542/1000kv has an 8mm shaft and I have to ream it out (one way mission) I'll go get a new 9x4 in a minute and let you know how it comes out. Cheers
Just to be clear , its this motor right? 3542/1000kv
http://www.hobbyking.com/hobbyking/s...dProduct=18232
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Old Oct 27, 2011, 09:35 AM
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Joined Aug 2010
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Quote:
Originally Posted by octane81 View Post
Just to be clear , its this motor right? 3542/1000kv
http://www.hobbyking.com/hobbyking/s...dProduct=18232
That's the one.
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