3.8" Ninja Foam Crawling and RC Rock Racing (U4)

Just to make things clear, my designs are protected by copyrights laws. It is not authorized to distribute or sell any of my designs without prior written authorization from myself. Even if you modified my original design. Thank you.

What's the difference vs D440RC original Crawling Inserts?
Ninja Foams are designed to have a stronger "core" or inner layer. The outer layer (with gyroid pattern) is thinner and the inner layers have more structural support. This result gives a stronger foam option for SCX6. Printing these inserts with 95A TPU (e.g. Overture 95A) provides that perfect feeling of a dual-stage foam with rock-solid side strength for these massive 1/6 rigs.

Video showing inserts here: https://youtu.be/zzoI_K1mnr8

This is a tire insert model to print in TPU for 3.8" wheel diameter tires for RC Crawling rigs like RC4WD 40 Series. The model is optimized for ~8.2" tall tires (like RC4WD Rock Crusher Monster 40 Series 3.8" Tires) and there are 3 diameters available to choose from.

The model has 4 layers that provide progressive resistance to the tire surface, from soft to stiff in the center. This allows RC cars to have great traction while keeping the tire shape, adding grip, and making the car predictable during racing.

These models cannot be stretched on the X/Y axis (insert diameter) since it will impact the design, but you can stretch them as you want on the Z-axis (insert width) if you want to fit them in a wider or narrower tire or wheel.

Read 3D printing settings carefully, as is critical to get the right outcome. If you need help, please reach out on my Facebook page: https://www.facebook.com/groups/d440rc

You can sell 3D printed parts designed by D440RC, but need to comply with four simple rules: 1) Respect the brand, make it clear this is D440RC design, and don’t change the original name/brand helping advertise model purchase in Cults, 2) you need to buy/download the models you want to sell, 3) prints must be in good quality, 4) you can only sell 3d printed parts, you CAN NOT sell/give away the models/files, those are only for you to keep.

The model uses Ultimaker Cura slicer infill patterns to model the soft layers, providing full flexibility to the user to configure the tire insert as they like. The model will include 3MF file to "open as project" in Cura, which includes the print settings.

The recommended print setting for SCX6 is Gyroid with a 6% Infill minimum. This may vary depending on the filament you are using, you can try ~10% depending on how soft/firm you want it.

The insert must be printed in TPU (tested with TPU 95A), 0.6mm nozzle, wall line count 2, NO Fill Gaps in Between Walls, No Top/Bottom layers, Support for the inner ring, and 0.3~0.4 layer height. Make sure your TPU settings are PERFORMING WELL. Printing Gyroid Infill usually needs good cooling and slow speed (I do 30mm/s on wall/infill and 60-100% cooling fan - but this will depend on your printer's capabilities). Make sure you have good layers adhesion to result in a strong insert.