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1/5 scale K2 black panther tank

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1/5 scale K2 black panther tank

Old 04-12-2024, 04:17 PM
  #226  
PE YOUNG
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Two servos, which will be in charge of vertical operations of the main gun ordered on March 21, came home yesterday, more than 20 days after entering Korea from China.
In the process of reflecting the amendment to receive the correct product through correction due to a large amount of government VAT due to the incorrect application of HS code by an agent in charge of customs clearance, there were two dismissals by the Korean Customs Service, so I paid the incorrectly measured tax and received it, and I'm going to take the process of getting the tax back.


When I tried to work with a dedicated programmer of GX SERVO, which I had bought first to reverse the direction of one of the servos I received yesterday, I found that the servo programmer was defective.
The product was sent without three pins for the servo interface.
I found out that their QC level was terrible, so I doubt that their servos will work well.
I tried soldering three wires to the servo programmer myself and connecting them to the servo, but the computer and USB dongle recognize each other's signal, but the dongle and the servo could not recognize each other.
The dongle couldn't read the parameters of the servo, so it eventually decided to return it through AliExpress, notified the existing buyer of this and ordered a new product at the same time to save time.
I also asked him to thoroughly check the quality before delivery.
First of all, I will install a servo reverse switch in one servo to work with the reverse direction, and I will adjust the length of the push rod to match the centers of the two servos.
Later, when a new programmer comes, I will try to reverse the direction and adjust the center through the programmer.

And while waiting for the new servo, I decided to modify some devices through various trials.


1. I decided to replace the motor that controls the level of the turret with the planetary gear motor from the currently installed worm gear type.
When the horizontal stabilizer was turned on during the test operation and the excessive left and right pivot was intentionally performed, it was found that the current worm gear could not withstand and was crushed.
Therefore, I decided to replace it with an impact-resistant planetary gear type motor that was applied when manufacturing 1/6 scale Chieftain and ordered an additional motor.


2. The test was carried out after replacing the gear ratio to speed up the heavy RC tank of the Big Scale.
I found out that when I excessively adjusted the dependent gear ratio to increase the speed as much as possible, the torque loss of the engine was severe and the engine was too much.
I found out the limitations of the proper gear placement based on the current engine, so I decided to adjust the gear placement to the proper level again.

These operations will be carried out from next week.



2 servos for vertical control of main gun arrived in 21 days

150KG.cm GXservo

150KG.cm GXservo

Programmers exclusively for GX servos that arrived defective

There are no three servo connecting pins

Trying to use three strands by soldering them directly

Connect PC, Servo programmer and Servo

PC program fails to read servo parameters, then decides to return defective products

Servo signal reverse switch

Configure the servo to be installed temporarily

The worm gear motor currently installed, the horizontal stabilizer ON, and the gear is broken in the sharp left and right pivot turns

Plan to install 2 planetary gears for horizontal control to be replaced

Last edited by PE YOUNG; 04-13-2024 at 02:11 AM.
Old 04-13-2024, 02:02 AM
  #227  
PE YOUNG
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Inside the worm gearbox that was damaged during the rapid horizontal stabilization test of the turret

Inside the worm gearbox that was damaged during the rapid horizontal stabilization test of the turret

Identified that the gear teeth were also damaged

Extreme speed-up gear ratio to maximize speed

Extreme speed boosters and sprockets to maximize speed - set to decelerate again
Old 04-23-2024, 05:00 AM
  #228  
PE YOUNG
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Replace petrol supply pump

Replace with 200 RPM planetary gear DC motor for turret rotation control (existing: worm gear motor)

Add a hole for motor shaft withdrawal to a new location for installing the planetary gear motor

Installation of holes for planetary gear motor installation

Move existing worm gear motor position to new planetary gear position

Installation of planetary gear motor

Preparing to cut the motor shaft

Motor shaft cutting

Clean up the cutting surface after cutting the motor shaft

Clean up the cutting surface after cutting the motor shaft

Planetary gear motor and new drive gear

Planetary gear motor and new drive gear

Reinstalling the front top cover

Installation of front upper cover retaining bolts

Installation of the middle upper cover
Old 05-08-2024, 03:08 PM
  #229  
PE YOUNG
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The work has been delayed a lot because I'm on a business trip to Moldova, a country with beautiful scenery.
Maybe all the work will be done this week.


There was a broken tooth in the right bevel gear, so we replaced it this time

We reduced the length of the chain and removed the idler to ensure the life of the chain

Limit switch and rear area guide were installed to prevent the main gun of the turret from colliding in the rear area of the turret

The limit switch is installed at the bottom of the turret and is not visible from the outside after installation

We will complete the engine and power transmission modification work and complete the final top plate work

We replaced the newly purchased main gun with a servo that will control the top and bottom

Today, we will complete this update once we check the signal system of the turret and the operation of the servo
Old 05-14-2024, 11:35 PM
  #230  
PE YOUNG
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I complete the lifting test of the main gun for vertical stabilization and horizontal stabilization of the turret and main gun for preventing collision of the main gun in the rear area today.
The operation worked very well.
I will share this function in a video soon while driving outdoors.



I pressed the back of the tank with my foot to check whether the main gun is vertical stabilization

I pressed the back of the tank with my foot to check whether the main gun is vertical stabilization

It was also confirmed that when the main gun was fired, the shell was moved to the automatic reload position

It was also confirmed that when the main gun was fired, the shell was moved to the automatic reload position

It was also confirmed that when the main gun was fired, the shell was moved to the automatic reload position

The main gun is automatically lifted by rotating the turret to the rear area after the main gun is lowered and returned to its original position when it leaves the area

The main gun is automatically lifted by rotating the turret to the rear area after the main gun is lowered and returned to its original position when it leaves the area

The main gun is automatically lifted by rotating the turret to the rear area after the main gun is lowered and returned to its original position when it leaves the area

With this, I would like to inform you that all the processes of this upgrade have ended well.
Youngjae

Last edited by PE YOUNG; 05-15-2024 at 04:18 AM.
The following 2 users liked this post by PE YOUNG:
Pah co chu puk (05-17-2024), tankme (05-15-2024)

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