Introduction: 3D Printed Willys RC 4X4
This is a remixed version of the original Ossum Jeep. While it is dimensionally exact and shares a few components with the original, this is an entirely different beast that is designed from the ground up to be fully 3D printed, including the axles and entire drivetrain. It is a true 1:10 scale radio controlled, full-time 4X4 Jeep.
This project started after I got in contact with Mr. Ossum inquiring about a fully printed version that did not rely on a donor RC vehicle. After learning that no plans to create such a version existed in the near future, a few ideas were exchanged, a new friendship was made and the urge to design what I had envisioned needed to be fulfilled.
The Jeep uses parts that can be bought online or at the local hobby and hardware store. Links are provided to various items on Amazon and AliExpress. The STL files are available on Thingiverse.
Files: 3D Printed Willys RC 4X4
Please feel free to visit the Limitless RC Group on Facebook if you have any further questions or just want to share your designs. You can also visit the Ossum Group if you'd like. There you can discuss the build of the original Ossum Jeep.
Thanks for your time and enjoy the instructable.
PS. I am doing my best to get this done ASAP. Please be patient and check back for regular updates.
Step 1: Materials, Components and Hardware
The following is a list of all materials and components that were used to build the Jeep. Any deviation from this list is at your own risk. If you find a better solution to something then feel free to post about it on the facebook group.The Jeep is designed to be printed in PETG for its strength characteristics and flexibility. It is also very affordable. Most of the links provided are either to Amazon or Aliexpress. You can also check out your local hobby shop but it is much cheaper to buy online from these retailers.
Materials
1kg PETG Plastic Spools - Color of choice for the body and black for the frame and drivetrain.
3mm Carbon Fiber Tubing T507LA4 - For the steering tie rod and steering column.
6mm Carbon Fiber Tubing T518Lm - This is for the axle shafts and transmission input/output shafts.
Components
Lego Technic Universal Joint, 3 Studs Long - You will need at least 6 of these.
7.4 Volt 260 Size Electric Motor - Tamiya motor must be upgraded to something that can handle 7.4V
Tamiya High Power Gearbox 72003
FlySky GT3B or Spectrum STX2 TX/RX - Only tested with these two.
Bearings - You will need around 22 of these to complete the Jeep.
Lipo Batteries or 2X Lithium-Ion 18650 Cells or Li-Ion Battery Pack for RC
18650 Battery Holder These are optional depending on if you want to use single 18650 Li-Ion Cells instead of LiPo or the Li-Ion Pack.
JST Connector Pairs with 8" leads - Or you may use other connectors + wire. The wire must be at least 20 gauge.
Hardware
1/8" Key Stock (Square Shaft) - 2 X 12"
M4X0.70 Nuts
M2 X 4-16mm Assorted Screws - Select Cap Head
M2 X 10mm Self Tapping Socket Head Screws
M2 X 8mm Self Tapping Socket Head Screws
M2 Threaded Inserts - These are optional depending on if you want to build the roll cage or not.
6mm ID X 12mm OD Steel Washers - Get these from the hardware store.
1.5mm Floral Wire - Get this at a craft store.
Tools
1.5mm Hex Driver or Allen Key.
Bi-Metal Hacksaw Blade
Nail File or 300 Grit Sandpaper
Step 2: Front Axle Assembly
Please follow the instruction text in the photos. These instructions were designed to be presented in a visual format. All efforts were made to ensure accuracy and everything seen here should be repeatable by the end user. If there are any edits or future updates, they will be placed below this text in a written format. Feel free to contact me if you are having any issues with this instructable.
Step 3: Rear Axle Assembly
Please follow the instruction text in the photos. These instructions were designed to be presented in a visual format. All efforts were made to ensure accuracy and everything seen here should be repeatable by the end user. If there are any edits or future updates, they will be placed below this text in a written format. Feel free to contact me if you are having any issues with this instructable.
Step 4: Engine Assembly
Please follow the instruction text in the photos. These instructions were designed to be presented in a visual format. All efforts were made to ensure accuracy and everything seen here should be repeatable by the end user. If there are any edits or future updates, they will be placed below this text in a written format. Feel free to contact me if you are having any issues with this instructable.
Step 5: Drivetrain Assembly
Please follow the instruction text in the photos. These instructions were designed to be presented in a visual format. All efforts were made to ensure accuracy and everything seen here should be repeatable by the end user. If there are any edits or future updates, they will be placed below this text in a written format. Feel free to contact me if you are having any issues with this instructable.
Step 6: Frame and Suspension Assembly
Please follow the instruction text in the photos. These instructions were designed to be presented in a visual format. All efforts were made to ensure accuracy and everything seen here should be repeatable by the end user. If there are any edits or future updates, they will be placed below this text in a written format. Feel free to contact me if you are having any issues with this instructable.
Step 7: Final Assembly
COMING SOON