Микро Дизель - Колибри ОТМ 08 - YouTube

Hello, friends!

Today we have a very small internal combustion engine on the review.

The engine (motor) is called "Hummingbird OTM-08

The number 08 indicates that it has a working volume of 0.8 cubic centimeters.

I recently experienced an engine that is even smaller.

Here is a baby.

I will leave the link to the video in the description below the video.

Who is interested, you can see.

Despite the fact that these engines are both two-stroke, they are very different from each other.

This engine is hot. He has a candle.

Well, this motor

this is guys, diesel!

Compression engines are distinguished by a high degree of compression,

which is achieved by clamping the counter piston.

It is clamped actually until it stops.

That is, the combustion chamber is very small.

In a classic diesel engine, fuel is injected into cylinders when air is compressed and at a high temperature.

Mixture ignites

and the piston does useful work.

Here the system is push pull.

There are no nozzles here.

The role of the nebulizer here is ether, because it evaporates very quickly,

mixes well with air

kerosene, which does the main useful work, is ignited and incidentally ignited.

This old series engine.

And it was a bird series.

Here, your attention 2.5 cc engine.

There are 1.5 cubic meters.

He seems to be called "Swift."

Well, this is "Falcon" and "Hummingbird."

Such was the bird series, guys.

The most amazing thing is the guys who owned these engines - two people I know.

One is the subscriber who sent it to me.

Alexander, thank you so much for this!

Well, the other person who sent Alexander, I know him too.

And they all said that the most amazing

that this engine is working

Yes, friends, this is truly amazing.

Because compression engines, especially old ones,

very hard to run.

Basically, with the help of a starter, I learned how to start

absolutely any engines.

Manually is the whole art to make it.

Especially in cool weather.

Such as the weather is now.

But we will definitely get him, because I have a starter.

This engine thrust was about 140 grams.

Here the tank is integrated.

He would have been even less without a tank.

Well, here you need some kind of tank fit.

We will use the screw

152 to 75.

Here was a screw a little smaller.

See it.

We put it on the stand and find out how it works, measure the craving and measure the momentum.

We put on the motor frame.

I fasten with small cogs.

I wanted to put this micromotor on a foam plane,

but the guys talked.

Because when interacting with nitro fuel the plane may melt.

The same will happen if you put this diesel.

I still have hope that I will put these

micromotors on any plane.

They have no gas control.

But in principle, if the plane is well planning (glider), it can take off on the engine.

And landing at the expense of the airplane planning mode.

So far, this option is in my plans.

Well, on the foam plane, I decided to put an electric engine in summer, if time is enough.

Now I put on the stand and we will test it,

to find out what kind of traction there is

The stand is very simple.

I think he does not introduce any errors,

because you can see for yourself in which plane it rotates.

The resistance is not so great here.

Bottom banally screwed screw size

and through it the effort is transmitted to the scales.

From this product will make a tank.

Silicone tubule is very convenient for tanks.

A bar to measure revolutions.

Well, that's all ready, except for one. Need to fill the tank

and start to start.

For a start, dial a syringe.

Such is the fat mixture with castor oil.

You can immediately add here.

Guys, we are ready to start!

But no...

Now for sure everything is ready.

These glasses book your eyes from flies and stones.

Turnovers will be measured with a digital tachometer.

To start, I'll try it manually.

Although ... this is a "bad job".

It is necessary to pump up a little.

No, but in this way it will be necessary for a long time ... So, let's go.

Guys, it was a bad idea to start on the table.

See what happened.

It is necessary to remove somewhere this engine in the other direction, so that it blew.

I hope you have noticed how clearly it captures.

We will be a “stoker” in this direction.

Lubrication of the lathe does not hurt him.

Measure

12900 ... 13000 revolutions per minute.

Scales-230 grams of thrust. This is fixed.

235 grams of guys. Here are his options.

Crawling all design.

0_0 Beast.

Here it is a beast, friends.

Have you seen how he pulled this whole structure?

She was here and he dragged her

I dragged it under an angle of 45 degrees approximately. Everything is shaking.

It shakes due to the fact that unscrew from the engine frame.

Then everything became clear.

Because of this, he was driving.

In general, such mega tests.

We had up to 230 grams.

With other screws one could get other indicators.

Perhaps even more.

Exactly, because the screw was not selected.

I put the screw that is.

I have only one of the small screws.

Let's put a three-bladed screw for the experiment.

He is also small, but too big for him.

But I think it will start and we'll see.

Screw wooden, own design.

The screw was made in childhood.

I hope that will not scatter.

I am naturally confident in my product, but you never know ...

I will reduce a little a compression.

Fuel a little more.

Well, let's go guys.

It went ... Screw unbalanced.

Screw unbalanced guys.

He does not go on turns.

Too it is huge for the engine, we will not torment.

We will disassemble and watch what is inside it.

Decided not to remove the cylinder.

The engine is too valuable for me.

And removing the cylinder says

that you can’t put him back to the same place.

The piston is already rolled.

He will already behave completely differently,

that is, re-rolling will be.

This is a minus resource, well, you understand.

Watch there is nothing special.

You have already seen a complete disassembly many times.

Here the usual piston without piston rings.

By the way, guys, soon engines with piston rings will appear on the channel,

And there naturally

be sure to complete disassembly.

This engine will understand only superficially.

Let me show you what's inside him.

That is, this “head” can be safely unscrewed, it does not affect anything.

Here the counter piston is installed.

That is, we crush and increase the compression with this cog.

Cog, apparently obliquely turned.

This is done so that it does not unscrew from vibrations.

Here, obliquely, like that at an angle.

Next, unscrew the back wall.

Let's look at the crank mechanism.

Tightened not much.

It will be necessary to do something with the seal.

Here on some kind of sealant planted.

Here is how. See you

No wonder dismantled.

Someone silicone his already here oh-oh-oh -_-

It could not be done.

Silicone inside.

Well, here you can see the rod, guys.

Rod and piston.

The piston is about a centimeter in diameter.

The connecting rod is about 2 centimeters long.

20 millimeters for techies.

So yes, well,

such an engine (motor).

Guys who were interested, subscribe to the channel and support the "Like" button.

Thank you all for your attention and all for now!

Igor Negoda.