Motor mounts can be easily made out of ply, plastic, PCB laminate and even coro. Just check the motor datasheet for dimensions like hole sizes and distances. You'll need some M3 screws for mounting the motor.

which type of medical tape is used for hinge of control surface , so that i can also use it in my 3d airplane.
or what type of tape it is. 

That is not medical tape, it's fiberglass reinforced tape.

@AnjanBabu

  sir where i can buy this tape

there you go http://www.rcbazaar.com/search.aspx?searchterms=glass+fiber

same question i asked sometime ago

how to setup Elevon Mixing in avionics 7 ch transmitter. or in any 7 channel transmitter
just want to know basic how to apply

there after i want to use it in my model

can i use  Vtail mixing for this purpose to achieve.
or it is a wrong method.

i mean v tail is for rudder and elevator and elevon is elevator and aileron
but movement is the same of the servo (counter rotating and up down) that what is required

Both though (V tail/ elevon)use the same basic principal of flight control, 2 control surfaces to control up/down and left/right.

am i right or wrong .
senors pl

Here is the key.

for avionics there will a channel mixing menu and you need to mix ch 1&2 and connect left elevon ch 1 and right elevon to ch 2.
Elevons perform both the functions of elevator and aileron.

Hi   everyone
I am building a trainer euro fighter with delta configuration

The Eurofighter Typhoon is a twin-engine, canard-delta wing, multirole fighter. The Typhoon was designed and is manufactured by a consortium of three companies; BAE Systems, Airbus Group and Alenia ... 

Top speed: 2,495 km/h

Model is modified and scaled to my requirement
delta  wings are little bit large to the ratio to get good lift and stability in the air.
Its wing is 29 "
Length is 30"
And I am going to use 5x4 prop
Power plant is yet not decided.
Here is the initial start.
This is very very simple design. its my second  trainer airplane to learn aerobatics

i am searching for the power plant where should i buy motor to get 1000 gm of thrust.
and also prop

anybody from rcbazaar. plz pm me.

Gives you 1.2kgs of thrust with an 8x4.

RCBazaar: http://www.rcbazaar.com/products/1910-avionic-c2826-kv1900-brushless-motor.aspx

Since, prop is back...  therefore, you need to decide size of your prop. A bigger prop won't fit in the slot you've made. Also, on increasing slot size it might lose strength.

@utkarshg13

i am expecting bit more from my second trainer model as v2 said earlier i want hover 
and it has canard so possibility increase once i gain sufficient height i want to perform it

it is coming in my dreams

thats way i want large size of prop to install ,but large size slot can create  prob to the strength  of  tail fin

i decided to put two long spar at tail section to get strength.

what you think

finishing completed

now installation of servo waiting for power plant.

Quote from: wingmanbunty on May 11, 2014, 05:48:37 PM
i am searching for the power plant where should i buy motor to get 1000 gm of thrust.
and also prop

Turnigy D2826-6 2200kv on 6x4, 5x4
Send Adiboy a pm. He may have.

@K K Iyer


very nice to get reply from you sir i am your fan  

what is the max thrust it produce with 6x4 prop

@wingmanbunty
900-1000gms as per test results on the net.
Use APC style props with strong hub to blade joint.
And don't exceed 6" dia as rpm will be 20000 or more



https://docs.google.com/spreadsheet/lv?key=0AtSZzrsraF1-dDJzNGVEMnZnRzNzMkJab2dfRjlxMnc&usp=sharing&pli=1

But why do you need 1kg thrust? Model is probably less than 500gms.

servo installation completed

   i want to cut the servo wire from the middle and extend it using other three set of wire

i want to know is it the right method , is it possible , or right kind of act.

presently it is 6" i want 10" of wire length.


or i have to buy servo lead .

In my opinion do not cut the servo wire. You need a servo extension. So, search for it. Cutting the wire is not a good idea at all.
Also, if you are planning to go with 6" prop as stated by Iyer sir don't go above this size since your motor may burn otherwise.
If increasing the size of slot you just need to focus on increasing strength of that area.

i agree with you sir you both say absolutely right

abrupt use of control stick



it is very serious question if i use control stick very slowly and throttle very gently then no problem happen
but if i use delta control  and throttle abruptly then controls respond in very different way means they work on there own airplane controls are gone out of control for some time

they respond even if i do not apply any input

in air because of it airplane goes out of control for few second


what is this lots of command given at the same time cause it or bad servo

it could not be bad servo because i replace the servo with brand new servo.

@wingmanbunty,
Use about 40% exponential on aileron and elevator to reduce sensitivity around neutral.
Else use dual rates with 50% throws on low rate.
Also see if controls flutter at full throttle when you are holding the model.
Best of luck.

@K K Iyer

thanks for your support sir

very best of luck for your glider project it is awesome.

@K K Iyer 

today morning i apply 40% exponential on aileron and elevator to reduce sensitivity

it seem to me that problem solved out very thank you sir

now will travel of controls 40% is okay to perform maneuvers or i can adjust to 50-60% as you say PLZ.

but u solved it i was facing this problem with my trainer it has rudder and elevator many times controls goes out of may hand(20 feet height) due to this problem, model hit the ground like stone

at that time i pray to god to reach the model 100 feet and above so that when model fall 20 to 50 feet  when the control came back to my hand i made recovery. or can try to make recovery

because of this prob i always fly high

the second thing i didn't get

dual rates with 50% throws on low rate

place led lights at wing tips to fly in low visibility

ie very early in the morning with very little light.

dual rates with 50% throws on low rate

by Richard Lindberg


Dual Rates.


When you set up your control surface throws on your (new or otherwise) airplane, you used the Travel Adjust/Adjustable Travel Volume/End Point Adjust function on your radio. Doing this actually set up one rate, or control authority, for each control surface. A given stick movement thus resulted in a certain control surface movement, from minimum to maximum. Dual (or even triple!) rates provide you with a means to instantly change that control authority by flipping a switch*.
The question arises: why would you want to change rates? Most models respond more quickly to a given control input when they are flown at high speeds. The same stick movement at high speed as given at a lower speed might result in over-controlling your model—a prime cause of 'unscheduled landings'—or perhaps a case of PIO: Pilot Induced Oscillations (also leading to undesirable results). Having the ability to REDUCE control authority would reduce your model's sensitivity to stick movements, resulting in a smoother, more controlled flight.
The following graph depicts how changing rates affects a servo's response. If, say, a 50% rate is programmed, the servo will only move 50%, or half, or the distance it would otherwise move if the rate were not activated. Most radios will let you set a different rate anywhere from 0% to 100/125/140/150%, depending on the manufacturer.

Changing rates is usually done by a switch, as mentioned earlier. Some radios have dedicated switches for each primary control surface, e.g., elevator, aileron and (perhaps) rudder. The (usually lower) rate you select depends on how your airplane responds to controls at high and low speeds. Some airplane model manufacturers are beginning to include recommendations for lower rates; check your instructions. Barring this, I usually recommend 70-75% for elevator and ailerons; about 50% for rudder.
One problem with dual (or triple) rates is that, once that rate is chosen it's in effect until the switch is used to select another rate. Furthermore, if that chosen rate is a lower rate, you can see by the preceding graph that you no longer have full throw capability! While this might be fine for high-speed flight, you might need more control surface movement for takeoffs and landings. Of course, all you would have to do is remember to flip those switches after takeoff and before landing. Is it possible to have the benefit of reduced sensitivity AND full throws? Yes, it's called...