Hand made 1/5 scale K2 Black Panther MBT in Korea.

[Youngjae Bae]

The engine has been replaced and the drive wheel is also equipped with an assist device to prevent off-track.

Youngjae

[Youngjae Bae]

Today, we worked on the track separation prevention device of the driving wheel, the teeth cutting of the driving wheel, and the fuel tank positioned in a new position.

[Youngjae Bae]

Today, I manufactured a generator using DC motors using the timing belt and sprocket purchased the other day.
The power generation will be controlled while driving the engine, but we expect it to be enough to charge the battery with DC 12V.

[Youngjae Bae]

I did some work again today.
First of all, I checked the power generation performance of the step motor generator installed in the engine.

1) I have configured the engine fuel supply system.
Currently, I'm temporarily installing a water pump and commissioning it,
but I'm concerned about the deformation of the sealing material of the pump, so I ordered a small oil pump.

2) It has been confirmed that charging and discharging remain neutral when the engine is idling,
and charging becomes smooth when the RPM rises slightly.

3) Engine exhaust muffler was completed using corrugated tubes and silicone tubes.

4) The position of the throttle servo was moved close to the engine and installed.

Sooner or later I will apply a new radio system for the commissioning and install the main gun stabilizer (GSU) that was ordered by SGS Electronics and try it.

Youngjae

[Youngjae Bae]

We even completed a simple test run after engine change today.
We found problems in these test runs and will try to solve these problems from tomorrow.

[Youngjae Bae]

Here's a video of what we've been working on for the past few weeks.

Youngjae

[Vince Cutajar]

I like.
What type of plastic did you use for the exhaust pipe?

Vince

[Youngjae Bae]

I like.
What type of plastic did you use for the exhaust pipe?

Vince

In the stainless corrugated tube and the final stage (the black part) silicone tube was used.
^0^

[Youngjae Bae]

In order to increase the running speed of the tank,
the parts were ordered to replace the 12tooth-shaped sprocket attached to the engine's drive shaft with a 20tooth sprocket,
and then this part is attached to find the appropriate gear ratio considering the proper speed and the load at low speed.
And in order to increase the storage efficiency of electrical energy from the generator, we are going to install a three-phase diode.

Youngjae

[Youngjae Bae]

This week's work has completed various configurations of the main body and is waiting for the arrival of the product to finally exchange the sprocket purchased from Amazon, and during this period, the electrical wiring of the turret is being renewed. In this upgrade, GSU is being introduced to link two large servos that vertically control the main gun.

Also, I hope this work will be one way to control the main gun of the large tank Leopard or Chieftain.

Youngjae

[Youngjae Bae]

I'm sharing the interim results of GSU introduction.
First of all, low-cost 1/5 scale servo from China has different specifications and torque.
When two were used, one side used servo reverse, but the other side used the servo reverse signal, but the other side used the servo signal.
So, I only drove with one servo, so I confirmed the operation.
And I ordered two servos and a servo programmer today that can be a little expensive program from AliExpress. After replacing it with this servo, I will share the video within a few days.
And the sprocket to speed up was also replaced, and the result is satisfactory.

Youngjae

[Youngjae Bae]

On March 7, I ordered 30 tooth sprockets from Amazon and on the same day, I ordered a servo programmer and a high-powered servo from AliExpress.
The sprocket is scheduled to arrive this afternoon, and the servo programmer is expected to arrive around tomorrow, but the important part, the servo, does not arrive until tomorrow, so I will first adjust the gear ratio that determines the driving speed of the K2 tank and finish covering the upper part of the open body for work.

And while waiting, the electrical and electronic grid constituting the K2 tank was modified.

Youngjae

[Youngjae Bae]

This week, we worked on assembling a bulldozer waiting for parts

[Youngjae Bae]

The servo still hasn't arrived, so we continued to make bulldozers this week.

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[Youngjae Bae]

Hydraulic-powered bulldozer assembly weighing more than 300 kg has been completed.
It will be completed by installing the LED lights by next week.
Youngjae