Title: Twin motor anti stress machine Post by: wingmanbunty on March 17, 2017, 10:11:21 PM 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 Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 17, 2017, 10:13:10 PM 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
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 17, 2017, 10:14:52 PM 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 Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 17, 2017, 10:28:24 PM working with electronics for the setup
Title: Re: Twin motor anti stress machine Post by: Bilal on March 17, 2017, 11:02:33 PM 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 Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 18, 2017, 06:32:18 PM 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 Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 18, 2017, 07:40:18 PM using my old aircraft as reference for electronic setup
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 18, 2017, 07:41:40 PM 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 Title: Re: Twin motor anti stress machine Post by: Bilal on March 18, 2017, 08:10:02 PM cool, what are you doing to match the motor RPMs??
connecting both the motors to the same esc in parallel? Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 18, 2017, 08:12:11 PM Sir i am using 2 esc
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 18, 2017, 11:04:11 PM 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 . Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 19, 2017, 01:05:21 PM Cutting of elevator section, use of bicycle spoke band for the elevator control surface
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 19, 2017, 01:08:47 PM cutting and joining the section of fuselage along with elevator and rudder.
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 19, 2017, 01:14:12 PM thermocol wings in two section joined by bamboo spars and laminated with transparent packing tape.
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 19, 2017, 01:19:17 PM electronic setup planning
counter rotating propellers (8045) Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 19, 2017, 01:23:08 PM installing front and rear motor, rx , servos
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 19, 2017, 01:25:13 PM complete fuselage with electronics
Title: Re: Twin motor anti stress machine Post by: rcrcnitesh on March 19, 2017, 02:33:23 PM Wow!!
Title: Re: Twin motor anti stress machine Post by: sanjayrai55 on March 19, 2017, 05:27:18 PM Very interesting Bunty {:)} {:)}
Awaiting the maiden eagerly :thumbsup: Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 19, 2017, 09:10:15 PM 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 . Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 19, 2017, 09:20:39 PM some pictures of hand made wooden hinges and connection with servos , bamboo spars for the good sensitivity of the controls .
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 19, 2017, 09:21:42 PM design of the decoration
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 20, 2017, 11:34:47 AM 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 ,
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 20, 2017, 11:41:59 AM 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 . Title: Re: Twin motor anti stress machine Post by: sbajare on March 20, 2017, 02:36:44 PM 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 regds Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 20, 2017, 10:20:34 PM yes sir
i agree it should have fully symmetrical airfoil profile for good speed. with aileron controls, it also lack 3s setup that could make huge difference , i am also using 8045 props (its quardcopter props) :giggle: :giggle: , i am not good pilot , i will be happy if it fly good. Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 24, 2017, 02:10:38 PM few more pictures of ground running test
https://www.youtube.com/watch?v=3YJgLuOyar8&feature=youtu.be Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 26, 2017, 12:52:02 PM testing airplane with single and twin power units
Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 26, 2017, 12:53:42 PM you tube video link
https://www.youtube.com/watch?v=AFJ4KqDJqG8&feature=youtu.be Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 26, 2017, 12:56:11 PM youtube video link
https://www.youtube.com/watch?v=UBCKV0M0gWI Title: Re: Twin motor anti stress machine Post by: wingmanbunty on March 26, 2017, 01:24:01 PM one roll
https://www.youtube.com/watch?v=QaMGuZHZcsY&feature=youtu.be |