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« Reply #50 on: November 20, 2016, 09:38:02 PM »
K K Iyer
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Just post it (growl)

Suggestion for improving mood and making canopy at the same time:

Drink one bottle. Then cut its neck. Then divide it once vertically and once horizontally.

(Worst come to worst, you'll at least get one good dakaar from the exercise  Grin)


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Re: '2016 Sweepstakes' Electric Challenge Twin
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« Reply #51 on: November 21, 2016, 06:29:37 AM »
sanjayrai55
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Another Beauty in the hanger.
Nice and clean build sir.

Thank you Antriksh
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« Reply #52 on: November 21, 2016, 06:30:32 AM »
sanjayrai55
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Iyer sir! What an idea, sirji    ROFL
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« Reply #53 on: November 22, 2016, 12:23:03 AM »
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That set me thinking...
Two similar ESCs, or one double capacity ESC to both motors?
Which would be better?
I don't have the theoretical knowledge to answer that.
Using one ESC to power two bldc is not a good idea , as these are synchronous ESCs the ESC talks to the motor and I don't think that at any time instant , the angular position of the two motors will be same .. ... Hope I am not wrong

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« Reply #54 on: November 23, 2016, 05:43:26 AM »
sanjayrai55
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What has the angular position of the motors got to do with it? This is not a multi-copter
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« Reply #55 on: December 11, 2016, 07:43:00 PM »
sanjayrai55
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Successful maiden today

Video in bits and pieces Wink

Take-off



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« Reply #56 on: December 11, 2016, 07:47:33 PM »
sanjayrai55
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In the air



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« Reply #57 on: December 11, 2016, 07:51:06 PM »
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Landing approach and landing





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« Reply #58 on: December 11, 2016, 07:55:35 PM »
sanjayrai55
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Comments: Flies very well indeed! Excellent slow fly characteristics, cruises at 30% throttle comfortably

It was taken off and trimmed by Group Captain Ramesh (retd.) flown by me, and landed by Nishad  Grin

Needed a fair amount of down-trim, and showed a little tendency to climb under power. These suggest to me some downthrust is required

This concludes this build for the 2016 Sweepstakes, thanks for following
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« Reply #59 on: December 11, 2016, 08:08:00 PM »
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Sir, This was a excellent trial with twin engine. If i remember this is your 2 nd model with twin motors.

The Takeoff was soft and quick.

So now to the question of motors spinning at different RPM ( in a one battery 2 esc & two motors ) can be put to rest since the plane flew well.

Hope it did not have any turning tendencies.

regds
Saurabh
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« Reply #60 on: December 11, 2016, 08:12:37 PM »
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Flies very well sir.
Seems a new ground !
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« Reply #61 on: December 11, 2016, 08:16:14 PM »
sanjayrai55
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Sir, This was a excellent trial with twin engine. If i remember this is your 2 nd model with twin motors.

The Takeoff was soft and quick.

So now to the question of motors spinning at different RPM ( in a one battery 2 esc & two motors ) can be put to rest since the plane flew well.

Hope it did not have any turning tendencies.

regds
Saurabh

Thanks Saurabh. No, no turning tendencies.
In fact, when I checked the Lipos after the flight, they both had discharged precisely equal amounts (I was using 2 X 3000 mAh 3S)
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« Reply #62 on: December 11, 2016, 08:17:57 PM »
sanjayrai55
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Flies very well sir.
Seems a new ground !
Thank you Manoj

I have been flying Nitros and larger size electrics at this ground - the Bhondsi ground of AAG (Aeromodellers Association Gurgaon) for some years. The noise you heard in the background were 2 150 cc Gassers Cheesy
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« Reply #63 on: December 12, 2016, 05:12:18 PM »
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Superb sir  Thumbs Up Thumbs Up. Graceful flier.
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« Reply #64 on: December 12, 2016, 05:45:46 PM »
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superb twin motor build sir....Smiley Clap Clap Clap Clap
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« Reply #65 on: December 13, 2016, 06:35:16 AM »
sanjayrai55
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Superb sir  Thumbs Up Thumbs Up. Graceful flier.

Thank you Sandy sir
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« Reply #66 on: December 13, 2016, 06:35:49 AM »
sanjayrai55
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superb twin motor build sir....Smiley Clap Clap Clap Clap

Thanks so much RamaRao Cheesy
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« Reply #67 on: December 14, 2016, 09:58:33 PM »
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nice very nice
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« Reply #68 on: December 15, 2016, 05:38:38 AM »
sanjayrai55
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Re:

Thanks Bunty

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« Reply #69 on: December 15, 2016, 10:22:24 PM »
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Yes Sir...always successful model and nice flying
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« Reply #70 on: December 16, 2016, 05:21:21 AM »
sanjayrai55
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Thanks Taitilbhai
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« Reply #71 on: December 18, 2016, 08:26:07 PM »
sanjayrai55
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Update: added a little downthrust on both motors. Flies much easier now. Take-offs are just marvellous! Still flies at 30-40% throttle - pretty fast too Wink
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« Reply #72 on: December 24, 2016, 06:30:17 PM »
sanjayrai55
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« Reply #73 on: December 24, 2016, 07:35:22 PM »
K K Iyer
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Beautiful. Short and sweet.
Like the way she lifts off so quickly...
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« Reply #74 on: December 24, 2016, 07:39:29 PM »
sanjayrai55
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Beautiful. Short and sweet.
Like the way she lifts off so quickly...

Thanks Iyer sir Cheesy

In fact, just hit a little bump on the ground and was up! Smiley
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