1.9 x 5.4" Tire Insert (Foam - PL Boggers) for RC Scale Crawler

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.

This is a tire insert model to print in TPU for 1.9" wheel diameter tires for RC Crawlers/U4RC/Scale rigs. This model is specifically optimized for PL Boggers (5.4" tall tire) with 1.9" rims.

The model has 3 layers that provide progressive resistance to the tire surface, from very 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 crawling, trailing, or racing.

Check video explanation with assembly here: https://youtu.be/grk4mYsLeGY

Read 3D printing settings carefully, as is critical to get the right outcome. Each print will take 9~10hrs if set up correctly. 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.

Use Gyroid infill at 4%. Infill UP or DOWN if you want a softer or stiffer insert. Between 3.5 and 6%, I found to be good, but 4% has proven to work well (durable and soft for the outer layer).

This must be printed in TPU (tested with Overture TPU 95A), 0.3mm nozzle, wall line count 1, NO Fill Gaps in Between Walls, No Top/Bottom layers, Support for the inner ring, and 0.2~0.24 layer height. Make sure your TPU settings are performing well. Printing Gyroid Infill usually needs good cooling and slow speed (I do 20mm/s for infill and 100% cooling fan - but this will depend on your printer capabilities).

I also added two "Setting Overlaps" in Cura, one at the bottom of the model and one at the top. This allows adding "Wall Line Count 2" to get a stronger wall on the curved corner of the outer layer of the model. This is also part of the 3mf Cura project file (Open as Project). The purpose of the setting is to make the tire insert to support better the RC car on side crawling.

Here's a video with some tips to get the desired outcome: https://www.youtube.com/watch?v=7GkwF7k0koY