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« on: March 17, 2017, 10:11:21 PM »
wingmanbunty
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Dornier Do 335 inspired modification in antistress machine (that is my rc plane)


Although my airplane looks like high wing trainer but the hole idea inspired by do 335

do335-112x.jpg
Twin motor anti stress machine
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« Reply #1 on: March 17, 2017, 10:13:10 PM »
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the Do 335 possessed great potential as a combat aircraft, but never got the chance to prove itself. Delayed by high ranking indecision and Allied bombing raids, it simply ran out of time

Dornier-Do-335-1.25.13-NASM-Udvar-Hazy-Center.jpg
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« Reply #2 on: March 17, 2017, 10:14:52 PM »
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Material used :-
1.   Ordinary thermocol sheet  for wing construction
2.   Bamboo spars for fuselage and wing strength
3.   Cycle spoke for elevator
4.   Fibre tape used in cricket bat protection


Electronics  :- thanks rc bazaar for providing all the electronics
1.    Avionics 9 grm servo  Qty =2
2.   Avionics brushless motor M2230 1780 kv
3.    Ford Car electric wiring for extension
4.   Wolf pack 25c 900mah lipo battery 2 cell 7.4 volt  qty =2
5.   Avionic rcb 7 x  radio
6.   One Y connector for connection between two esc
7.   Esc  avionics 20 qty =2
8.   Plastic  counter rotating props 8045 props (thanks vivek ji)
(tractor and pusher motors are arranged counter rotating to reduce torque and a clean flow of air on wings , also i want speed with this 2s setup)


praposed layout plan

airplane.jpg
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« Reply #3 on: March 17, 2017, 10:28:24 PM »
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working with electronics for the setup

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« Reply #4 on: March 17, 2017, 11:02:33 PM »
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this looks interesting, am assuming that both the props are rotating in the opposite direction (to balance the torque along the roll axis ) , however, are you using some kind of mixing the front and the rear motor??

Something to match their RPMs , or is it even needed?

good luck bro

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« Reply #5 on: March 18, 2017, 06:32:18 PM »
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Yes sir both the propellers are rotating in the opposite direction to counter the torque, i am testing the thrust produced by both  the motors .

I am testing the individual motor thrust ,i do not  have pictures the of individual test of the motor , but i am posting some pictures and video 

https://www.youtube.com/watch?v=aEQl9M_k6UA&feature=youtu.be

test1.jpg
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« Reply #6 on: March 18, 2017, 07:40:18 PM »
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using my old aircraft as reference for electronic setup

old-aircraft.jpg
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« Reply #7 on: March 18, 2017, 07:41:40 PM »
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 Coro sheet cutting parts

each motor is producing 300 grm of thrust and the weight of the airplane is going to be approx 500 grms

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« Reply #8 on: March 18, 2017, 08:10:02 PM »
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cool, what are you doing to match the motor RPMs??

connecting both the motors to the same esc in parallel?
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« Reply #9 on: March 18, 2017, 08:12:11 PM »
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Sir i am using 2 esc

-Motor-Wiring.jpg
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« Reply #10 on: March 18, 2017, 11:04:11 PM »
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some pictures of sections cutting

the three long cutting surface are supported by bamboo spars and goes from the center hole of the elevator to provide strength .

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« Reply #11 on: March 19, 2017, 01:05:21 PM »
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Cutting of elevator section, use of bicycle spoke band for the elevator control surface

cycle-spoke.jpg
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« Reply #12 on: March 19, 2017, 01:08:47 PM »
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cutting and joining the section of fuselage along with elevator and rudder.

fuselage-3.jpg
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« Reply #13 on: March 19, 2017, 01:14:12 PM »
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thermocol wings in two section joined by bamboo spars and laminated with transparent packing tape.

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« Reply #14 on: March 19, 2017, 01:19:17 PM »
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electronic setup planning

counter rotating propellers (8045)

electronics-4.jpg
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« Reply #15 on: March 19, 2017, 01:23:08 PM »
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installing front and rear motor, rx , servos

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« Reply #16 on: March 19, 2017, 01:25:13 PM »
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complete fuselage with electronics

electronics-setup-41.jpg
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« Reply #17 on: March 19, 2017, 02:33:23 PM »
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Wow!!
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« Reply #18 on: March 19, 2017, 05:27:18 PM »
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Very interesting Bunty  Clap Clap

Awaiting the maiden eagerly  Thumbs Up
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« Reply #19 on: March 19, 2017, 09:10:15 PM »
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Thanks nitesh
Thanks sanjay sir
Its always inspiration watching your build log sir , individual motor is producing 300 grms of thrust and airplane all up weight is approx 500 grms , so good power in hand with this 2s setup , very soon i am planning for maiden flight . 


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« Reply #20 on: March 19, 2017, 09:20:39 PM »
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some pictures of hand made wooden hinges and connection with servos , bamboo spars for the good sensitivity of the controls .

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« Reply #21 on: March 19, 2017, 09:21:42 PM »
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design of the decoration

LOGO.jpg
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« Reply #22 on: March 20, 2017, 11:34:47 AM »
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some pictures of the aircraft , the landing gear is temporary fitted just for ground testing it is not final it may seem propeller touching the ground , not enough ground clearance ,

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« Reply #23 on: March 20, 2017, 11:41:59 AM »
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i am planning to make first test flight without landing gears , the nose section also seems little bit too long and the wings are almost
half way , because both side ie front and rear have equal amount of weight (motor , esc )i manage to put both the batteries to the front section of nose as far as i can move ,

i had done some glide test on the airplane , long nose does not seem any issue ,

the purpose of the project is to get some speed with this 2s setup

lets see what happen in maiden flight .

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« Reply #24 on: March 20, 2017, 02:36:44 PM »
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Hi,

Good design effort, if this is built for speed. Then why the undercambered wing??
Your wing looks more of a glider type design. For speed models a swept wing or delta wing is most preferred.

Pls see details of this model here
https://en.wikipedia.org/wiki/Dornier_Do_335

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