RC India

Here it is ! I have started building my first rc plane the ft old fogey. I have already build the body and the wing . My target wieght is under 600 gms. I am using emax Cf 2812 1200 kv motor with a 9*5 prop and a 1500 mAh 3s lipo. Had some trouble finding plywood so building the firewall out of plastic and would be using bicycle spokes as the push rods. I am using the flysky ct6b does anyone know it's range ?

Here are some pics...would be updating as project progresses.

Is 2mm plastic fine to make the firewall ?

Motor 2822 or 2812?

Bicycle spokes as pushrods? Not jhadu teelies with wire from gem clips for the ends? Much lighter...

Range?
Look at you model from 200 meters away.
In flight would you be able to see which way it was going? Much less control it?
Doubt if you’ll ever be more than 100 meters out. The radio’s range is far more than the pilot’s...

Construction looks nice. Keep us updated!

When in doubt, check out alternatives.
Like titanium, steel, aluminium, hardwood, ply, balsa, depron, thermocol.
All you have to do is a pull test.
If you can pull the motor out, you need a stronger firewall!

The Fogey looks fine!
You could use kitchen cutting board plastic. That's quite strong.

Sir the motor is 2812

But I don't have that. Do we have to.secure motor screws with nuts ?

But still will 2mm plastic from boxes be fine ?

Which kind of boxes are being talked about?
I secure my smaller motors to plywood using self tapping screws.

The normal plastic boxes used to store items .

In your other thread about firewall material, you said
“Will 5mm depron do the job or would have to make it out of wood ?
I am using the emax cf2822 motor with a 9 *5 prop.”


In this thread you say cf2812, 1200kv with 9*5 prop.

The cf2812 is 1534kv, not 1200kv and needs a 7*4 prop, not 9*5.

Pl verify which motor you have, and use appropriate prop.
Specifications attached.

Sir the motor is Cf 2812 and I will be using a 8*6 prop. Built the firewall and attached the motor.

Could not upload pictures as whenever I try to post a pic an error pops up.Though the size of the image is 10 kb.

Please use a image sharing website like post image.org and share the link here.

Here are the images:https://postimg.cc/gallery/scb9y530/

excellent!
Are you using MDF?

@knvshrm,
So you finally found some material for the firewall. Hardboard!
Strengthen the holes with a spot of superglue (after removing the screws)

1. Check if prop saver is on backwards
2. Push the prop assembly close to the motor body, not at the tip of the shaft

Ok sir will do the following changes.

Sir the elevator is a bit tilted toward the right is that fine or I need to fix it ? Here's the image https://postimg.cc/image/a1v24kysb/

@prabal276
I don't have know what this is called but I got it from the carpenter.

The elevator looks fine.
I don't think it will cause major problems.

Ok

First servo and pushrod attached.

Pics:https://postimg.cc/image/zbicisea5/

I thought you were using flexible pushrods.
You are using straight pushrods.
This will work better:

Wouldn't the plane be tail heat if I place the servos at the back ?

*heavy

And can you plz share a pic of your rudder.

That plane is long gone! Can't share any more pictures.
Refer to my thread to see if any of those pictures help you.
http://www.rcindia.org/electric-planes/ft-old-fogey-build-thread-for-rci-6-th-sweepstakes/

Did you place the rudder servo just like the elevator one ? And if i place the servos at the back wouldn't the plane be tail heavy ?

No!
You'll just have to move the battery a little forwards. Since you have a 1500 which is much heavier, you should be fine. Infact, the servos at the tail will help you balance.

Are these throws enough at full stick movements ? Pics:https://postimg.cc/gallery/liot8gss/

They should be as recommended by Flitetest.
Share picture of your pushrods, servo placement and control horns please.
Regards

Ok

Here's the pic https://postimg.cc/image/49bfptw6z/

The recommended throws are half an inch. One side is a bit more than half inch.

Is the servo placement fine ?

why this eerie silence ? awaiting suggestions.

Looks quite ok. Go ahead.
Dont forget the screw for the servo arm!

Ok sir.

You can either trim your servos to correct your problem or re adjust the servo arm.

How do I attach the lipo to the plane ? I just have lipo straps but they are too big.

Put hook Velcro beneath the power pod (full length)
And the loop Velcro on the battery. You can move the battery to attain CG then.
Your throws should be according to FT. If they are, then fine.
Are you getting equal deflections both side with that servo placement? If yes, then they are okay. I hope the control horns are installed correctly..... With the pushrod over the joint.
Regards

I am not getting equal deflections . One side has throws a bit less than the other .How to correct that ?

Show me the side view along with the control horn.
In my opinion, the force vector is not straight. So one direction won't be getting full throw.

Ok

Here's the pic https://postimg.cc/image/l319u5ocb/

https://postimg.cc/image/6ju4sssnf/

Pics of Maximum throws at both sides https://postimg.cc/gallery/s1hhmtgc/

The rudder looks okay. Continue with the build.

Your control rod seems bendy, its a problem in the long term.

what material do I use to make the push rods ? That one is made out of phool jhadu ki tilli.and also how do I make a light landing gear ?

@al ham shari
Bendy? What does that mean? Flexible? Or bent?

Doesn’t seem to be flexible...
Prabal has posted pics of similar pushrods on his similar model.
I’m biased, being the inventor of jhadoo teeli pushrods  ;D

@knvshrm
“How do I make a light landing gear?”
DONT MAKE ONE AT ALL.
Hand launch and land on belly...

Just go ahead man. By now you should have test flown it.
No amount of checking the depth of the pool, temp of the water etc will enable you to swim, without getting into the water.
So trust your knowledge and instincts and plunge in.
And please be neat and accurate in your work, not sloppy or messy

Sir actually the second servo I got was faulty so the new one will arrive by Friday.

The elevator servo and pushrod has been set up just need
to set up.the CG now and charge the lipo.

The fogey is ready will be going for a test flight tomorrow.

waiting for video of  maiden flight and ur success also

kp

Here's the maiden flight guys , https://youtu.be/1gTOZBEjHp0
This could only be possible with the help of Kk iyer sir and prabal.
Regards