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Old Jan 05, 2008, 02:20 PM
Ship first, Improve often
L0stS0ul's Avatar
Virginia
Joined Apr 2005
5,008 Posts
Quote:
Originally Posted by ParkJeff
Do you mean the canards move opposite of elevator direction? Can't imagine elevator would be reversed.
It really depends on how the user will program the plane. I would put the majority of the elevator control on the canards which must function opposite of normal elevator. I would then probably provide a small amount of elevon mixing for elevator on the ailerons. I would not think you would need much elevator action on the ailerons as those canards look quite large and should provide a lot of control as is. Elevator on the ailerons would be mixed like standard elevators.
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Old Jan 05, 2008, 03:38 PM
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sebsoupe's Avatar
Bourg-en-Bresse, FRANCE
Joined Mar 2005
407 Posts
Quote:
Originally Posted by GWS CHEN
Here is the new GWS-J10 EDF jethttp://tw.video.yahoo.com/video/play?vid=1380040

Itís a lighter EDF jet comparing to another same size ones. It flies fast and with more aerobatics in the air by controlling the elevon and the front stabilizer.
Hello!
the Multiplex Twister got almost the same Specification (and he's made of Elapor, a foam like EPP or EPO ) :
Wingspan 850 mm
Overall fuselage length 1115 mm
All-up weight (with 2500 mAh battery) approx. 880 g
Wing area approx. 25.5 dm≤
Wing loading (FAI) min. approx. 31 g/dm≤
impeller DF 69 with Himax A2825-3600
RC functions Elevator, aileron and motor

and in this video, the MPX Twister flies almost better than th J10...
Twister Jet von Multiplex (1 min 57 sec)
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Old Jan 06, 2008, 03:04 AM
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sebsoupe's Avatar
Bourg-en-Bresse, FRANCE
Joined Mar 2005
407 Posts
Quote:
Originally Posted by GWS CHEN
Amp drawn : 36A max with the oldest orange rotor
Thrust output: 660g max with the oldest orange rotor
"GWAEO030B" is for GWS J-10 EDF75-BL2815-2 white.
Hello Chen,
are you talking about the GWBLM005C Inrunner BL Motor 2028 Yellow kV2300 ???
Thanks,
Bye,
sebsoupe
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Old Jan 06, 2008, 07:11 AM
Uh Oh Jungo
ParkJeff's Avatar
Australia, WA, Perth
Joined Feb 2003
779 Posts
Quote:
Originally Posted by sebsoupe
and in this video, the MPX Twister flies almost better than th J10...
Yes, but it's not a delta with canards ala Eurofighter.
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Old Jan 06, 2008, 07:59 AM
Registered User
Taipei, Taiwan
Joined Oct 2005
4,697 Posts
Hi Sebsoupe,

I'm afraid that these two J-10's flew faster,
http://tw.video.yahoo.com/video/play?vid=1506805
they were with their landing gears,and all powered by the stock motor GWBLM009 BL2815 (red) KV3700-3800. http://www.gwsus.com/english/product/motor/gwblm009.htm

Chen
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Old Jan 06, 2008, 08:55 AM
To drive or to fly......BOTH!!
FresnoJay's Avatar
USA, CA, Clovis
Joined Apr 2007
6,199 Posts
That one with the blue paint sounded like it was about to explode trying to stay airborne. While the all grey one sounded like it had no problems at all and seemed faster with alot less noise. Is it just me?

Jason
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Old Jan 06, 2008, 01:31 PM
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kensp's Avatar
Darwin Australia
Joined May 2002
6,960 Posts
Quote:
Originally Posted by GWS CHEN
Hi Sebsoupe,

they were with their landing gears,and all powered by the stock motor GWBLM009 BL2815 (red) KV3700-3800. http://www.gwsus.com/english/product/motor/gwblm009.htm

Chen
Chen

What is the kV of the GWBLM009 BL2815-2 (white).

The quoted figure of 30 Amps for the GWBLM009 BL2815-2 (red) agrees with my preliminary test data of 30 amps at 31,600 RPM when the old style four bladed EDF-75 fan was used.

Ken
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Old Jan 06, 2008, 02:26 PM
A-4 nut!!
skyhawk's Avatar
Vancouver B.C.
Joined Apr 2002
4,654 Posts
Chen,
Is this the motor that came with the A-4 EB's?

Why is the amps lower?
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Old Jan 06, 2008, 02:31 PM
Pusher jets rule!
crxmanpat's Avatar
Mesa, AZ
Joined Jan 2006
17,368 Posts
Chen/Mr Lin,

When do you expect to send EB kits out? Are you sending to Taiwan first to keep EMS costs down?

Pat
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Old Jan 06, 2008, 09:30 PM
Registered User
Taipei, Taiwan
Joined Oct 2005
4,697 Posts
Hi Ken, skyhwak & Pat,

EB kits will be shipped out from GWS China directly. My colleagues are further testing the new batch of the motor, same BL2815-2 (red). I've been told that the new BL2815-2 (red) could power EDF75 better, generate more thrust but less Amps drawn. All J-10 kits will be with this new motor and the upgraded impeller/rotor.

The video two J-10's were all powered by the motor of the first batch one + 3S 11.1V 25C 2000 mAH Lipo pack. The motor was the same as EB A-4 ones. The EDF rotors were the old orange ones.

Ken, yours was the same from the first batch one, still with red shrunk tube. Their KV value were between 3700 - 3800.

Chen
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Old Jan 06, 2008, 09:50 PM
Registered User
Ipoh, Perak Malaysia
Joined Jul 2006
4,011 Posts
Quote:
Originally Posted by GWS CHEN
Hi Ken, skyhwak & Pat,

EB kits will be shipped out from GWS China directly. My colleagues are further testing the new batch of the motor, same BL2815-2 (red). I've been told that the new BL2815-2 (red) could power EDF75 better, generate more thrust but less Amps drawn. All J-10 kits will be with this new motor and the upgraded impeller/rotor.

The video two J-10's were all powered by the motor of the first batch one + 3S 11.1V 25C 2000 mAH Lipo pack. The motor was the same as EB A-4 ones. The EDF rotors were the old orange ones.

Ken, yours was the same from the first batch one, still with red shrunk tube. Their KV value were between 3700 - 3800.

Chen
Goody! Better is always, of course, better! . Can I use 4S if I add a heat sink with some extra slots ground on the sides of the stator/motor shroud to provide additional cooling for the motor?

chewy

[EDIT] Btw, you did not answer when they are scheduled to be shipped out. I hope we get them long before your ship arrives at the US shores. Otherwise, it sorta defeat the purpose of being early birds, doesn't it?
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Old Jan 06, 2008, 10:17 PM
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Taipei, Taiwan
Joined Oct 2005
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It'd be much much better to use 3S Lipo with this motor when powering EDF75. My colleagues at GWS China will try to ship out EB kits earlier.

Chen
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Old Jan 06, 2008, 10:47 PM
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kensp's Avatar
Darwin Australia
Joined May 2002
6,960 Posts
Quote:
Originally Posted by GWS CHEN
Hi Ken, skyhwak & Pat,

Ken, yours was the same from the first batch one, still with red shrunk tube. Their KV value were between 3700 - 3800.

Chen
Chen

I measured a kV of 3711 on the sample you sent to me. I am still waiting on a 2250 mAh 25 C battery pack and a 40 Amp ESC to continue testing. The Christmas break has caused mail delays.

I have run this motor using a 7 x 3.5 three blade propeller and two cells but my 25 Amp ESC goes into protection mode shut down at around 27 Amps.

Ken
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Old Jan 06, 2008, 10:57 PM
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Bill Covert's Avatar
Grove City, PA
Joined Sep 2007
955 Posts
Quote:
Originally Posted by ParkJeff
Yes, but it's not a delta with canards ala Eurofighter.
Yep, I was thinking maybe we should compare the J10 with the Wright Flyer too, while we're doing these
similar comparisons.

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Old Jan 07, 2008, 02:09 PM
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sebsoupe's Avatar
Bourg-en-Bresse, FRANCE
Joined Mar 2005
407 Posts
Quote:
Originally Posted by ParkJeff
Yes, but it's not a delta with canards ala Eurofighter.
I agree
it was just a comparison between 2 planes of similar size and motorization
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