Help to fix / build my plane

Started by GhostRider, January 01, 2014, 10:23:41 PM

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kiran rc

Can u tell me the wing span, weight etc of this plane or give me a link of this plane.i will suggest the electronics.  ;D

kiran rc

@girishsarwal sir
The 40mhz tx and rx from toy car does not hav enought range.i hav both the tx and rx (tx2b) from toy car.i think those from toy heli works.do check I hav posed a heli rx pic in this thread. :)

girishsarwal

Hi kiran
I agree the range is about 50ft for the chinese ones but the plane I see seems like a backyard or indoor flier...I can tell u how to get it up and running but the details of the power level is based on the rf circuit inside not the 2b chip.. one will need a higher power tx for that increased range... maybe he will have to hunt for the right model... as a rule of thumb the larger cars like 1:12 scale have better range..

my son has a whte ferrari thats 1:16 scale and it does a 100ft very well.
gs

girishsarwal


the toy heli is a good alternative...but i forsee only one problem. That in the coax types the elevator is a free running motor...our friend will have to somehow mechanically or electronically mod it for the rudder for fixed position movement like a servo...I javent thought on it much but I feel that  will need some thought

there is another thread running that showcases a magnetic actuator for this purpose...an electromechanical conversion


http://www.rcindia.org/self-designed-diy-and-college-projects/magnetic-actuator-(home-made-scratch-build)/msg170030/#new

gs

kiran rc


kiran rc

The best would be buying something like the sky surfer plane.the combo would be around rs 5000.

GhostRider

Hi,

Wingspan is 49cms and plane length is 39cms

Have attached the pics of the same, also it has 130mah nimh battery which also i will have to change.

So now suggest me the final elecs, as devang suggested 2 brushed esc of 20amps and 9gm servos

also will need help on how to connect the servos, the tail has come cutting marks given which looks for rudder ...

Thanks all

devangflyer

You can search how to connect servos , etc on google /rc india , I am telling you brushed esc as the motors on your plane would be right for the plane as they are factory installed .


devangflyer

#34
Man , according to my 2 nd post , The esc from aero works is rs 20 less but the shipping would cost more as aero works is in chennai and thehobbyshop is in Pune , the servos from rcbazaar cost only rs 199 and the battery is completely wrong for the setup I recommended , you will require a 11.1 v 500-1000 mah 3 cell lipo battery , you can get it cheapest from rcbazaar as well and as ghost rider lives in Mumbai the shipment would arrive very soon as the latest branch of rcbazaar is in pune

So the better links for cheapest stuff are -

ESC - http://thehobbyshop.in/index.php?main_page=product_info&cPath=34_36&products_id=125

Servo - http://www.rcbazaar.com/products/794-avionic-av9a-9g-servo.aspx

Battery ( please choose the battery that you think is best And is between 500 to 1000 mah , and the voltage is 11.1 or 7.4 v  ) - http://www.rcbazaar.com/category/71-batteries-lipo-safe-bags.aspx?pageindex=2

From the starting I had thought about the setup and then I had posted it , please don't just write any setup you think will work , I don't mean to hurt anybody , I just want ghost rider to have the best setup

devangflyer

Here's some building steps for your plane's modification , first of all choose any one of the esc and hold its signal wire ( the wire which goes into the receiver ) and with the help of any small sharp thing ex a pen , pull the blck small plastic piece which holds the red wire towards you , don't break it after bending it , pull the red wire and it should come out with the pin , then tape it so that it doesn't touch anything , we are doing this so that when you plug both the esc together the receiver doesn't blow up as it will not receive electricity from both the esc . You can glue the servos or screw them inside your planes fuselage , then you will need to make your plane's control surfaces , so first of all cut the the rudder and elevator exactly to the line marked on the model , to rejoin it , we will use some paper hinges , just cut 2 small holes on the rudder's hinge line , now glue the hinges on the rudder , now fit the rudder on your rudder's frontline , the line which is still on the plane , mark the place where you want your rudder to fit , then cut the holes and glue the hinge the left over hinge of your rudder to your frontline , now your rudder would look exactly the same as before but you would be able to turn it left and right , now do exactly the same process for your elevator


devangflyer

To connect your servos to your control surfaces , you will need some stuff , first of all use a pom horn or any other horn and glue it or screw it on your plane's control surface , then connect a rod to a Cleve's , repeat the process on your other end of the rod , now connect one clevis to your horn and another to your servo , repeat the process for all your other control surfaces .

devangflyer

Now here's the boring part , you will have to solder both your esc input power cables together , solder both the red cables together and the black cables together , after that you can solder any of the power connector to your cable . For the motors , cut the old wires and solder some new wires , use 3.5 mm female bullet connectors on the end of your motor cables , now also use 3.5 mm male connectors on your esc . Now your soldering work is finished .

devangflyer

To check the rotation of the motors , just plug the esc together and programme your remote for two throttle signals or use your y cable . Just connect both the wires from one your motor to a esc and repeat the process , give a 10 % throttle and check the direction of your motor , if the direction is wrong , just revers the cables of that particular motor , then if everything is right , then your motor system is ready

devangflyer

Now it's time to check your servos , just connect the cable of your servo to your receiver , then turn the system on , and check the system , if anything is working in the wrong direction , just reverse the servos from your remote , everything from reversing your servos to to connecting the electronics should be in your manual for your transmitter

devangflyer

Now everything is finished , we just have to tuck it in , mount your esc on your wing , in any position you want it to be with the help of some double sided tape , put the battery in your fuselage , in a place where the cg is right , mount your receiver in your fuselage and connect the servos and the esc , now turn on everything and final test it . NOW YOU CAN FLY YOUR PLANE


devangflyer

If you need anything else or having problem in anything , just post it on your topic and I will reply to it ASAP

kiran rc

Hello devangflyer I just gave him an idea of electronics. He can do some research for the electronics.

kiran rc

what is the original battery size.ghostrider told its only 150mah.how many cells? And  its a a nimh battery.

kiran rc

9grams servo may be heavy for this model.i think 5gram would be better because the total weight may be around 200-250 grams.again we need to know the , motor size.i feel 3cell would be to much power.these are brushed motor.they r only 6v.11.1volt may burn the motors.2 cell 350-500mah would work the best :thumbsup:.he must keep the weight as much low as possible.

devangflyer

No, the 9 g servos would be fine for this plane as  I have used them in my smallest build , which's wing size is about 20 inch and have sufficient power so that when the plane is in the sky , the air would not be able to bend the control surfaces .

devangflyer

I'm recommending a 3 cell 500 mah to 1000 mah battery because the two esc + servos are going to need at least 400 mah for 3 mins flying time

devangflyer

About the battery , I guess we will have to wait for ghost rider's reply , but anyway the link that I have given him has both 7.4 and 11.1 v battery's , so don't post it again.

girishsarwal

I am concerned there is not enough math carried out including parameters like target auw. ..wouldnt it be much definitve to work back from a target auw. The plane has a wing area barely 300sqcm...Maybe I am missing something
gs