In the upper part of the pix,is the micro bearing that will hold the modified gear.

More micro bearing and a bearing holder (bearing block).
A brushless motor with it's mount.

Some more bearing holders.
The two upper holders have a slightly bigger bearing. So they have been modified by fabricating a custom ring,so the shaft that goes in there,would be a nice snug fit.

With these vital component at hand,next was to simulate how they would sit in relation to each other....
This is where a Cad comes handy,but lacking one,i decided to do it the hard way. Real live simulation!
Then goes the two bearing block,into the shaft. Next goes the gear.

Next goes the modified gear with its two bearing blocks.

Next goes the brushless motor.

A close up shot of the drive train and reduction direction.

The next thing was to acquire an aluminum sheet. The best place to get that was in my mother's kitchen. So i grabbed one of her pot cover when she wasn't looking.
The pix below shows me working on the pot lid. Am trying to cut out the edges so as to get at the round sheet.

From the real live simulation i carried out,the shape i deduced for the gearbox happened to be like the one in the pix below.

Then i proceeded to calculating the position of the required holes to be drilled and chiseled.

I needed two of that shape,so i made them.

After drilling the holes,i went on to chisel the two required rectangular slots,to make room for the gears.

After drilling the holes,i went on to couple the gears with screws to one of the aluminum template..

Next,i coupled the other aluminum template. And here's the finished gearbox.

Now on to the propeller...
I modified my helicopter blade by cutting the length of the blade,to serve as a prop. I also had to balance them.
The pix below is the converted prop,held together by a screw. The blade measures 14cm each.

On to the next stage.
It remained for the blades to be mounted..
I had a problem with my prop holder,it wasn't fixed . Being a variable pitch prop holder from a helicopter,i had to look for a way to make them fixed. I figured some sort of jig that looks like a swashplate would do the job.
So to design the swashplate(permit me to use that name),i took a little sheet of aluminum, took my necessary measurement,and i went to work.
Below is the swashplate after i had it cut,and drilled the necessary holes. It remained for the two arm to be bent on both sides.

I bent the two arm at an angle of 90 degrees.
The two arm would latter hold the prop holder. The hole you see drilled on them,would hold the prop holder by virtue of a screw..

Next i twisted the arm, so they would lie parallel and sit well with the prop arm when screwed together.

It was coupling time. I installed the props and slide in the swash to see if the two arm were well aligned or not.

Offcourse it wasn't. I gave it a little twist and that did the job.,it was well aligned now..

Screwing time,so i screwed the arms.

Now to install the props and swash on to the gearbox. First,i removed the two props so they won't be in my way. And i mounted the piece as a single unit.

cool still following

I tested the unit today. It was nicer than i had expected.
Using my scale as a modified setup,i tried to measure the thrust of the prop. I got 400g at full throttle stick! Very low. I thought odd of that. On measuring my battery,i found the voltage had droped to 8.7volts.
I decided to run the test with a 12volt car battery. I got 960grams of thrust from it,with a low pitch of 7.5 degrees on the prop.
I guess my battery was down or bad. I am now charging it. When it's full,i shall repeat the exercise with a meter to see how low the battery drops voltage. If it's too much,i shall presume the battery has reached it's dead end,and look for a better battery.

where can I get electronic board materials and arduino

Gud job OP, i dey your back, thumbs up

wow what u ar doin is amazing i think me and u have alot in common, how can i reach u cos i have been working on my pet project for a while now but m having problems. this is my mail address audu4ni@gmail.com

toyo4souls:
where can I get electronic board materials and arduino

Check here; https://www.nairaland.com/1815945/call-it-arduino

Nice Job man, I love what you are doing.... And am very curious to see the end result

Charged the battery to the full, and had it checked by my digital meter. It reads 12.02v.

Next,i hooked up the battery the the plane,with the meter connected to the battery.

Then i spun it up.