My RC experiments with electric models

Started by wingmanbunty, December 18, 2013, 02:26:57 PM

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wingmanbunty

@madaquif


            yes sir the motor with all the 5 servo not take more than 11 amp of max power and i have
20 amp brand new esc.

what is missing that the motor is not rotating and giving beeeeeeeeeeeeeeeeep sound.

the motor is brand new. :headscratch: :headscratch: :headscratch:

EAT ,SLEEP , FLY

madaquif

Try calling rc bazaar and get some help from them to calibrate your ESC.

they should help you to calibrate the esc.       :thumbsup:
Regards

MadAquif...

4 D RC ....SURFACE WATER AIR N SPACE

wingmanbunty

@madaquif

          thanks madaquif i download the pdf and follow the procedure. 


 
EAT ,SLEEP , FLY

wingmanbunty

today i again try to move the motor this time i gone through the procedure the throttle was in down position controls neutral position i check all transmitter  setting and set it in the airplane mode

everything goes okay servo movement was also okay the beep sound according the manual was okay
it also beep twice to show the indication of 2s lipo connection but i was not able to move the motor

still something is missing please assist me

anybody using avionic motor please  :help:
or anybody from rc bazaar


EAT ,SLEEP , FLY

wingmanbunty

motor is rotating now . the mistake was i choose the wrong tx stick i thought it was trottle. :P :P
EAT ,SLEEP , FLY

rcrcnitesh

Awesome Best of luck for the near future.
How is the motor is it good
Maker | Aeromodeller | Teenager

wingmanbunty

@rcrcnitesh

       after long wait finally i got a working setup first time , it has very less space for prop mounting i manage to mount propeller , i am very exited to build airplane plane around this setup , motor is in testing phase.
EAT ,SLEEP , FLY

wingmanbunty

i am testing motor for my project i want to know

how to decrease the vibration of the motor

one thing i know is propeller balancing


what else is required to decrease the vibration. :headscratch:
EAT ,SLEEP , FLY

wingmanbunty

As I have a working setup I start building airplane around it. At first I decided to build motor glider with very large wing span about 5 feet long and the weight should be under
300 grms including equipments(motor, esc, receiver, servo ), I manage to build it in under 350 grms but thermocol particles were all around my house , I do not want my kid to be harmed by these small particles of plastic so I dropped the idea for some time I decided to
Prepare a closed working room in my house where I can safely use this material

I search the market for coro sheet and finally I manage to got It I construct  a new plane in few days , now everything is installed and I manage to construct it in under 300 grms with everything installed ie motor, esc , receiver ,servo , battery.
It has two servos to control rudder and elevator.


I had successfully done the ground run


Motor produces
PROP - 6x4    ● Get  300  gms Thrust
PROP - 7x3.5 SF. Get  400 gms Thrust
PROP -  8x3.8 SF● Get  450 gms Thrust

As rc bazaar says.


Presently I have 4x4 of prop fitted I think it is running under power .i am planning to use
8x4 prop.  for this model ,

Second think I am going to remove the motor and place some weight at nose and want to
Perform several glide tests so that I can get the feeling of flying this airplane without damage to my motor
EAT ,SLEEP , FLY

wingmanbunty

Hi sir

I made success , as the model I made was very heavy it require 8X4 of prop to get sufficient power to up in the air it is very nice finish airplane it has also nose mount motor so in case of nose down ,motor and prop will be lost

I decided to build pusher propeller airplane to train myself so that my motor and prop will be save , also I decided to build 80 grms empty weight airplane so that it can lift up easily
, I think presently it produce 250 grm s of thrust with 4X4 of prop. This is enough to lift this trainer

I also want to build simple airplane which can handle lots of crash


Mr vivek assist me to make electric setup in working condition.


The receiver  was repaired, there after I was in need of new battery it take lot of time to arrange equipment to make such airplane , still I do not have
New reliable equipments.



I do not go with the plan this is totally my creation with lots of jugad.as you know I lack some items, still I do not have props and connector and battery connecter are missing I build all servo connectors by very thin mango wood and bamboo sticks in place of carbon fiber rods .



Sir you know the story first when the receiver arrived it blow up, then I waited for several months for receiver,
Earlier that time I was against buying cheap rc equipment from rc bazaar if you read this blog (my rc electrical experiment) . I got very disappoint when I lost receiver the day it arrive to my home

But today I 100 percent recommend these items, I have everything from rc bazaar , avionic Rcb 7 x tx, rx , avionic esc , avionic receivers, avionic 9 grm servo , and battery also from rc bazaar.and all is fitted on my trainer airplane works fine

What else one could ask for more than in this price range

Transmitter has tons of features.

There is very less space for prop mount in avionic motor but it will be improved over time as it is performing fine in my airplane.

I mean a scratch builder like me like to risk less amount in experiment (till now 25000 rs )and rc bazaar provide it I have also futaba no doubt branded products are best but avionic is also a good transmitter

Also the service is very good , rc bazaar promise me to give receiver what ever qty I need today I have 4 receiver from rc bazaar and it is still available  in their shop . so parts supply is also good.

I am very thank full to rc bazaar to provide me equipment when I was in need to build my own airplane.


This is my success

And many thanks for your constant support you rc India always support me when I was in need of assistance.



Wingman bunty
EAT ,SLEEP , FLY

wingmanbunty

#110
i have the video soon i will upload it.



source of inspiration for this model is icon star microlight aircraft.

my model no close to it but it works  8-)
EAT ,SLEEP , FLY

wingmanbunty

#111
Technical detail of airplane

Airplane name : kishi trainer
Wingspan: 32x5""
Length: 24"
Tail :10"
Fin:5"
c.g :2  ΒΌ"from the leading edge.

Empty weight :
80grms (without the motor ,battery ,receiver,esc)

Prop:
4x4 orange(I recemend 6X4 ,8x4 carbon prop for batter result)
       Why I not use it because I do not have it right now.

Motor (www.rcbazaar.com):

Motor: Avionic M2024/18 KV2400 MICRO brushless motor
KV (rpm/v): 2400
Power: 55W
Winds: 18
Resistance: 277 mOhm
Idle current: 0.8 A
Weight: 17gms

Combination of usage:
PROP - 6x4 E
● Get  300  gms Thrust
Lipo - 2 cell 7.4V
ESC - 20 amp

PROP - 7x3.5 SF
● Get  400 gms Thrust
Lipo - 2 cell 7.4V
ESC - 20 amp

PROP -  8x3.8 SF
● Get  450 gms Thrust
Lipo - 2 cell 7.4V

Recommended motor is emax cost rs690 at ebay.in produce 600 grms of thrust for batter result

Servo(www.rcbazaar.com):
two 9 grms avionic servo , one more can be used to control aileron.
Esc  (www.rcbazaar.com):
20 amp esc avionic.


battery (www.rcbazaar.com):
wolfpack 2s 900 mah 7.4volt
recommended battery zippy 2s at ebay.in


I strongly recommend this type of airplane should be the first kind of airplane to every beginner because it is design by me,
Joking   ;D

Because it is very simple and very strong design, just two peace of coro cut and you are up in the air

Also it is a pusher configuration that makes s our motor and prop to much safer from early crashes we made during learning.

I am also learning and have orientation problem it crashes lots of time, just some piece of tape on the field and it is ready to fly again.

It is just like our old bajaj scooter which does not stop working.

Its dihedral design produces stability in the air

The C.G . Is also at the lower spot (ie weight of the battery and receiver) work as pendulum to bring it to centre position

The thrust coming out from the pusher propeller goes straight to the rudder that makes it super sensitive to respond.


Now stop wingman this is more than enough. :giggle: :giggle:


Thanks for support rcindia.
EAT ,SLEEP , FLY

wingmanbunty

here are dimension.
EAT ,SLEEP , FLY

wingmanbunty

now flying everyday
EAT ,SLEEP , FLY

wingmanbunty

Trainer airplane is performing very good I completed several flight and learn basic flying on this airplane

I have very small issue with this airplane the tail of the airplane seem downside hanging
Please see it care fully
It does not look good if we see carefully
If I put some emax power unit then it will climb like a helicopter very straight
And I do not want it; it should climb with smooth angle.

What could be the problem?

What I think it is thrust line or weight of servo backside.


I had seen you tube this is not my alone problem lots of flyer fly in the same tail down configuration
EAT ,SLEEP , FLY

wingmanbunty

Next project is aerobatic airplane which motor I should buy ,I need 2500 GM thrust.
EAT ,SLEEP , FLY

v2 eagle

2500gm of thrust? but why. you can make a foam plane with a motor of 500gms thrust and can fly 3d easily.

Ashok.P
FPV with head goggles

http://ashokpkumar.wix.com/mysite

wingmanbunty

Thanks v2 then emax from eBay will be good as you said earlier what should be my model wait with 500 grm thrust for 3d
EAT ,SLEEP , FLY

v2 eagle

Haven't build/flown any 3d planes so far i cannot recommend anything more than what i have heard/read. but most of the time i try with whatever i read/heard and i came with success.

For 3d you need a weight to power ratio of 1:1 ie if the plane is 300gms, then the motor should give at least 300gms thrust. higher the thrust, better it is.
2500gms thrust is roughly equivalent to a 25class nitro plane or higher.

A few tips you can consider. try using a SF prop instead of a speed prop. this makes prop hanging better and you can perform all maenuvers at slow speed with enough lift.

Planes love thrust but not weight. so instead of trying a powerful motor for more thrust try cutting down the weight as much as possible.

Ashok.P
FPV with head goggles

http://ashokpkumar.wix.com/mysite

Swapnil

Having built a 3D plane before, here's my suggestions:

1) Get a motor with 700 - 1000 grams of thrust.
2) Don't make the plane too light. The extra momentum can help sometimes.
3) Use good quality coroplst as it can handle the high forces.
4) If possible get metal gear servos for the elevator and ailerons.

wingmanbunty

Thanks sir
v2 eagle   Swapnil


still my aerobatic airplane power plant is not cleared in my mind ,

I have 2200 mah 11.4 volt 25c lipo battery I want to make use of it so decided to buy a
40 amp esc and a motor which gives 2500 gm trust the model weight is going to be around 800 to 1000 grms

I am searching items to build success full model. This is in my mind and yet not cleared. ???

V2 sir and swapnil sir started a good issue, about the weight of the 3d airplane

Please clear me out weight to power I am planning is okay or not
So that I can proceed further in my plan.
EAT ,SLEEP , FLY

wingmanbunty

hi all

servo makes control surface flutter what kind of problem is this , and in air plain respond smoothly but
sometime control respond automatically some kind of flutter and plan got crashed because it it not in my control

i fly with channel 1 elevator
channel 2 rudder
channel 3 throttle
i have avionics 7 channel tx rx. :help:
EAT ,SLEEP , FLY

Swapnil

Quote from: wingmanbunty on April 27, 2014, 08:21:48 PM
....
Please clear me out weight to power I am planning is okay or not
So that I can proceed further in my plan.


My ESPA3D weighed 600g. It did awesome 3D with a motor having 1000g thrust. For a model weighing 1000g, thrust of 1500g should be more than enough (seeing that it is your first acrobatic plane).

The servo flutter problem could be because of a bad servo or bad signal. Try another servo to check.

v2 eagle

Check your control surface hinge. are they sloppy or stiff/strong and have just  the required movement.
flutter could happen due to a range problem.

Ashok.P
FPV with head goggles

http://ashokpkumar.wix.com/mysite

wingmanbunty

thanks v2 , thanks Swapnil


          flutter of control surface is not my alone problem , you are right it is bad servo , but it can also
because of the weight of the control surface or large size of control surface , it can be solved out by applying the counter wight on the control surface , but in my case it is bad servo

i completed several flight with this servo now it is out of working i have to change it

weight to power is very good idea now i am cleared more


i selected few motors of 700 to 900 kv few of them have motor mounting from front side ie motor rotating backside and i am thinking of designing the motor mount

any idea how to deal with such type of motor ie i have to buy motor mount or can i design . :-\
EAT ,SLEEP , FLY