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« on: October 30, 2016, 06:04:58 AM »
sanjayrai55
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This is a twin motor 61"span Electric Powered low wing monoplane

It is being adapted to Corro instead of the original Balsa

Plans here: http://www.outerzone.co.uk/plan_details.asp?ID=7334

https://s25.postimg.org/g5gerx5of/7334.jpg
'2016 Sweepstakes' Electric Challenge Twin
« Last Edit: October 30, 2016, 06:32:09 AM by sanjayrai55 » Logged

 

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« Reply #1 on: October 30, 2016, 06:05:57 AM »
sanjayrai55
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Brief Specs

https://s25.postimg.org/v2kaf6tj3/IMG_20161029_091933.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/ajpea4flr/IMG_20161029_091946.jpg
'2016 Sweepstakes' Electric Challenge Twin
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« Reply #2 on: October 30, 2016, 06:07:59 AM »
sanjayrai55
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https://s25.postimg.org/bojgfi22n/IMG_20161029_120831.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/7gt9khq0v/IMG_20161029_120836.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/elb2tixa7/IMG_20161029_124342.jpg
'2016 Sweepstakes' Electric Challenge Twin
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« Reply #3 on: October 30, 2016, 06:09:18 AM »
sanjayrai55
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https://s25.postimg.org/x25hkcd8f/IMG_20161029_164214.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/kosndfnjz/IMG_20161029_183933.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/n7ece49a7/IMG_20161029_183941.jpg
'2016 Sweepstakes' Electric Challenge Twin
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« Reply #4 on: November 01, 2016, 01:02:26 PM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth



https://s25.postimg.org/4e6bmcf7j/IMG_20161029_124342.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/unre5514v/IMG_20161030_181426.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/n922crf9b/IMG_20161030_192306.jpg
'2016 Sweepstakes' Electric Challenge Twin
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« Reply #5 on: November 01, 2016, 01:03:57 PM »
sanjayrai55
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https://s25.postimg.org/avp85upkv/IMG_20161031_054322.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/v4clrkovz/IMG_20161031_113006.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/k61c9e0an/IMG_20161031_165809.jpg
'2016 Sweepstakes' Electric Challenge Twin
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« Reply #6 on: November 01, 2016, 01:05:23 PM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth



https://s25.postimg.org/ot7eb5nnj/IMG_20161031_194704.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/ew1ff7mdb/IMG_20161101_065624.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/tgiia1hbz/IMG_20161101_082414.jpg
'2016 Sweepstakes' Electric Challenge Twin
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« Reply #7 on: November 01, 2016, 01:06:52 PM »
sanjayrai55
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Don't wake a Tiger until you've factored the teeth



https://s25.postimg.org/gqe9wy9dr/IMG_20161101_082422.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/wd5jabn5r/IMG_20161101_090057.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/tx3pwh533/IMG_20161101_115628.jpg
'2016 Sweepstakes' Electric Challenge Twin


https://s25.postimg.org/5543p8nwf/IMG_20161101_115800.jpg
'2016 Sweepstakes' Electric Challenge Twin
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« Reply #8 on: November 01, 2016, 01:08:31 PM »
sanjayrai55
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Testing the Twin Set-up

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« Reply #9 on: November 01, 2016, 09:23:40 PM »
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Nice build sir   Clap
Your builds in  coro  are with great precision... Hats Off
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« Reply #10 on: November 02, 2016, 05:22:14 AM »
sanjayrai55
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Thanks Pranav  Thanks
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« Reply #11 on: November 02, 2016, 09:55:11 AM »
manojswizera
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well going sir,
those are very powerful motors, i have one of them.
the build is going to be heavy ?
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« Reply #12 on: November 02, 2016, 11:41:54 AM »
sanjayrai55
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Thanks Manoj

The design says 6 lbs 12 oz, or about 2 Kg

I'm targetting 2.1-2.2 Kg

That will give me a Wing Loading of 17 oz/sq ft, or a WCL (Wing Cube Loading) of 8.2; sport model

Suggested suitable values for WCL are:

Gliders   -   under 4
Trainers   -   6 to 7
Aerobatic   -   9 to 10
Scale   -   12 to 13
Racers   -   15 and over
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« Reply #13 on: November 02, 2016, 01:23:20 PM »
sanjayrai55
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Re:

Sorry, typo. As per design, weight is 3 Kg

Sent from my Redmi Note 3 using Tapatalk
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« Reply #14 on: November 02, 2016, 01:48:33 PM »
rastsaurabh
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Sir,
Its coming out good. Fuse will be red / white ?

What is the propeller size you are planning on this.
And did you find a way to have RPMs same for both motors ?

regds
Saurabh
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« Reply #15 on: November 02, 2016, 05:43:33 PM »
sanjayrai55
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Thank you Saurabh

Fuse will be blue,as that is the only thicker corro I have Wink
I will be using 10 X 4.5 contra-rotating e-props

I have used two independent ESC's, powered by a single LiPo. I hope that will be reasonably accurate. The ESCs are the same brand/capacity etc.
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« Reply #16 on: November 02, 2016, 05:49:01 PM »
sanjayrai55
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https://s25.postimg.org/bydnczthb/IMG_20161102_063347.jpg
'2016 Sweepstakes' Electric Challenge Twin


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'2016 Sweepstakes' Electric Challenge Twin
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« Reply #17 on: November 02, 2016, 08:10:08 PM »
K K Iyer
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I have used two independent ESC's, powered by a single LiPo. I hope that will be reasonably accurate. The ESCs are the same brand/capacity etc.

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.

I'm sure you'll try both and give us a real world answer...
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« Reply #18 on: November 02, 2016, 08:31:24 PM »
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Yes Pranavbhai..Sanjay Sir is the Master of making coro plane.. I have learn some techniques from him Salute Salute Salute
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« Reply #19 on: November 02, 2016, 10:56:45 PM »
kiran rc
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Two similar ESCs, or one double capacity ESC to both motors?
Which would be better?
A single ESC can be used to drive two motors. The only advantage of having two ESC's is that one can use the difference in thrust of the two engines to make turns.
(Using dual rates). Practically, one esc would be just fine.
 
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« Reply #20 on: November 02, 2016, 11:26:26 PM »
K K Iyer
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The advantage of having two ESC's is that one can use the difference in thrust of the two engines to make turns.
(Using dual rates)

Huh?  Head Scratching

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« Reply #21 on: November 03, 2016, 05:16:36 AM »
sanjayrai55
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Yes Pranavbhai..Sanjay Sir is the Master of making coro plane.. I have learn some techniques from him Salute Salute Salute

Thanks Taitil-bhai Cheesy
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« Reply #22 on: November 03, 2016, 05:17:44 AM »
sanjayrai55
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The advantage of having two ESC's is that one can use the difference in thrust of the two engines to make turns.
(Using dual rates)

Huh?  Head Scratching



Would need dual throttles. Or some complicated control system/mix
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« Reply #23 on: November 04, 2016, 06:59:43 AM »
sanjayrai55
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'2016 Sweepstakes' Electric Challenge Twin


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'2016 Sweepstakes' Electric Challenge Twin
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« Reply #24 on: November 04, 2016, 07:01:23 AM »
sanjayrai55
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'2016 Sweepstakes' Electric Challenge Twin


Nose Cone

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'2016 Sweepstakes' Electric Challenge Twin


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'2016 Sweepstakes' Electric Challenge Twin
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