Finally, the bulldozer that was made for a very long time is finally completed. From next week, I will get a servo that is delayed in customs clearance and finish the upgrade of K2.
Youngjae
Hand made 1/5 scale K2 Black Panther MBT in Korea.
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Youngjae Bae
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Vince Cutajar
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Youngjae Bae
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Re: Hand made 1/5 scale K2 Black Panther MBT in Korea.
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.
Youngjae
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.
Youngjae
- Attachments
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- Extreme speed boosters and sprockets to maximize speed - set to decelerate again
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- Extreme speed-up gear ratio to maximize speed
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- Identified that the gear teeth were also damaged
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- Inside the worm gearbox that was damaged during the rapid horizontal stabilization test of the turret
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- Inside the worm gearbox that was damaged during the rapid horizontal stabilization test of the turret
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- Plan to install 2 planetary gears for horizontal control to be replaced
- 12.jpg (72.36 KiB) Viewed 326 times
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- The worm gear motor currently installed, the horizontal stabilizer ON, and the gear is broken in the sharp left and right pivot turns
- 11.jpg (66.3 KiB) Viewed 326 times
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- Configure the servo to be installed temporarily
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- Servo signal reverse switch
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- PC program fails to read servo parameters, then decides to return defective products
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- Connect PC, Servo programmer and Servo
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- Trying to use three strands by soldering them directly
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- There are no three servo connecting pins
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- Programmers exclusively for GX servos that arrived defective
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- 150KG.cm GXservo
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- 150KG.cm GXservo
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- 2 servos for vertical control of main gun arrived in 21 days
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Youngjae Bae
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Re: Hand made 1/5 scale K2 Black Panther MBT in Korea.
The parts I've been waiting for have arrived and am assemblying and confirming the finish.
- Attachments
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- Replace petrol supply pump
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- Replace with 200 RPM planetary gear DC motor for turret rotation control (existing: worm gear motor)
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- Add a hole for motor shaft withdrawal to a new location for installing the planetary gear motor
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- Installation of holes for planetary gear motor installation
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- Move existing worm gear motor position to new planetary gear position
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- Installation of planetary gear motor
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- Preparing to cut the motor shaft
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- Motor shaft cutting
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- Clean up the cutting surface after cutting the motor shaft
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- Clean up the cutting surface after cutting the motor shaft
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- Planetary gear motor and new drive gear
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- Planetary gear motor and new drive gear
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- Reinstalling the front top cover
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- Installation of front upper cover retaining bolts
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- Installation of the middle upper cover
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Youngjae Bae
- Posts: 274
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Re: Hand made 1/5 scale K2 Black Panther MBT in Korea.
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.
Youngjae
Maybe all the work will be done this week.
Youngjae
- Attachments
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- Today, I will complete this update once I check the signal system of the turret and the operation of the servo
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- I replaced the newly purchased main gun with a servo that will control the top and bottom
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- I will complete the engine and power transmission modification work and complete the final top plate work
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- The limit switch is installed at the bottom of the turret and is not visible from the outside after installation
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- 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
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- I reduced the length of the chain and removed the idler to ensure the life of the chain
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- There was a broken tooth in the right bevel gear, so I replaced it this time
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Youngjae Bae
- Posts: 274
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Re: Hand made 1/5 scale K2 Black Panther MBT in Korea.
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.
With this, I would like to inform you that all the processes of this upgrade have ended well.
Youngjae
The operation worked very well.
I will share this function in a video soon while driving outdoors.
With this, I would like to inform you that all the processes of this upgrade have ended well.
Youngjae
- Attachments
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- 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
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- 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
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- 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
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- It was also confirmed that when the main gun was fired, the shell was moved to the automatic reload position
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- It was also confirmed that when the main gun was fired, the shell was moved to the automatic reload position
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- It was also confirmed that when the main gun was fired, the shell was moved to the automatic reload position
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- I pressed the back of the tank with my foot to check whether the main gun is vertical stabilization
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- I pressed the back of the tank with my foot to check whether the main gun is vertical stabilization
Last edited by Youngjae Bae on Wed May 15, 2024 1:20 pm, edited 2 times in total.
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Chang
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Re: Hand made 1/5 scale K2 Black Panther MBT in Korea.
Hi Youngjae,
Very impressive 1/5 Black Panther indeed. Waiting for the function video.
Beside it , there is a Merkava. Is it 1/5 and R/C too?
Kind regards,
Lerh Chang
Very impressive 1/5 Black Panther indeed. Waiting for the function video.
Beside it , there is a Merkava. Is it 1/5 and R/C too?
Kind regards,
Lerh Chang
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Es braust unser Panzer im Sturmwind dahin.....
Es braust unser Panzer im Sturmwind dahin.....
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Vince Cutajar
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Re: Hand made 1/5 scale K2 Black Panther MBT in Korea.
That's really great news.
Does the horizontal stabilization work also? (Hull turns but turret remains pointing in same direction)
Vince
Does the horizontal stabilization work also? (Hull turns but turret remains pointing in same direction)
Vince
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Youngjae Bae
- Posts: 274
- Joined: Sun Jan 27, 2019 12:01 am
- Location: South Korea
- Has liked: 743 times
- Been liked: 591 times
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Youngjae Bae
- Posts: 274
- Joined: Sun Jan 27, 2019 12:01 am
- Location: South Korea
- Has liked: 743 times
- Been liked: 591 times
Re: Hand made 1/5 scale K2 Black Panther MBT in Korea.
Yes, horizontal stabilization also works. When the tank pivot turn, the turret is fixed in one direction.Vince Cutajar wrote: ↑Wed May 15, 2024 11:18 amThat's really great news.
Does the horizontal stabilization work also? (Hull turns but turret remains pointing in same direction)
Vince
