I designed the farm tractor on a scale of 1: 6, as a driver every 1: 6 action figure can be used and I chose the Oliver Cletrac HG 42 tractor as a prototype.
Some parts are glued together, others are positioned with magnets, the backbone of the construction is the two square tubes.
Here is a video of the first indoor test drive:
https://youtu.be/zu37hACGBpY
Parts required for completion:
2 CHIHAI MOTOR 12V DC Gear Box Motor - 50 to 80 RPM ( RB Motoren )
2 speed controller and a Transmitter with mixing functions, or a special chain controller
2 10mm square tube's 220mm long
12 round Magnets: 10mm x 2mm
62 chain bolts diameter 3mm metal or carbon 20mm long
2 nuts M5 for the drive wheel
2 grub screws M5 25mm for the drive wheel
2 self-locking nuts M6 for the lead wheel
2 screws M6 40mm for the lead wheel
4 ball bearing 6x13x5mm for the lead wheel
6 nuts M4 for the chain guid
6 screws M4 x 16mm for the chain guid
Here the drive components that I used:
I drive with a 12 volt setup, battery = 3s 1500mAh
12 volt Motors with 80 RPM:
https://www.banggood.com/12V-DC-Metal-Gear-Reducer-Motor-High-Torque-DC-Gear-Box-Motor-p-925500.html?rmmds=myorder&ID=512747&cur_warehouse=CN
Speed controller: It is important that the brake can be switched off!
https://www.banggood.com/Waterproof-Brushed-ESC-160A-3S-with-5V-1A-BEC-XT60-Plug-For-112-RC-Car-p-1030025.html?rmmds=search&cur_warehouse=CN
I do not use a mixer for tracked vehicles, I mix the two motors in my transmitter.
What has changed:
13.02.2020 -- Assembly instructions added
15.02.2020 -- Information about the electronic components that I use
11.10.2020 -- new power drive ( read PDF )
I chose this engine:
https://www.banggood.com/Zhengke-ZGB37RG-12V-60rpm-Reduction-Motor-DC-Gear-Motor-37mm-Eccentric-Shaft-Output-p-1296605.html?rmmds=myorder&cur_warehouse=CN
Of course, this engine also works fine:
https://www.servonaut.de/shop/de/product_info.php?info=p529_getriebemotor-rb35plus51.html
| Assembly_Instruction.pdf | 1.3MB | |
| Chain_guide_front_left.stl | 1.6MB | |
| Chain_guide_front_right.stl | 1.6MB | |
| Chain_guide_rear_left.stl | 949.5KB | |
| Chain_guide_rear_right.stl | 956.3KB | |
| Chain_link.stl | 551.3KB | |
| Drivewheel.stl | 2.4MB | |
| Drive_lever.stl | 136.5KB | |
| Engine_hood.stl | 1.4MB | |
| Engine_side_panels.stl | 1.6MB | |
| Exhaust_Airfilter.stl | 76.3KB | |
| Footrest.stl | 185.5KB | |
| Fueltank.stl | 3.4MB | |
| lead_Wheel.stl | 828.4KB | |
| Motor_coverplate.stl | 302.6KB | |
| Motor_housing.stl | 281.3KB | |
| Power_Antriebe.pdf | 1.2MB | |
| Power_Drivewheel.stl | 1.1MB | |
| Power_Motor_housing.stl | 977.5KB | |
| Radiator_grill.stl | 3.6MB | |
| RC_plate.stl | 225.8KB | |
| Seatshell.stl | 454.3KB | |
| Seatspring.stl | 217.5KB |
