Carrera Structo Jeep Renegade Tyre

thingiverse

This R/C car is about 34 years old, and the tires on mine (which I've had that long!) are cracking and falling to bits. This is a replacement tire for the model. The new one is printed in Polyflex, which might be a bit too solid for tires. We haven't fine-tuned our Ultimaker 2+ settings for Ninjaflex yet, but it would probably work better since it's softer on the durometer scale. You'll need to use a screwdriver to help get these tires on the rims - they're harder than the stock tires. If you have the time and patience, I'd try this with Ninjaflex. Print Settings Printer Brand: Printer: Rafts: No Supports: Yes Resolution: 0.4mm Infill: 30% Notes: Polyflex - Flexible. Hot End: 230C Bed Temperature: 40C Layer Height: 0.1mm Printing Speed: 41.7mm/s Retraction Speed: 40mm/s Retraction Distance: 4.5mm Print Surface: Glass Slicer: Simplify3D How I Designed This Built in 123D, a very powerful tool with some stability issues. Creating the Tire: Draw an outline of the tire as a sketch. Lathe it through 360 degrees, keeping the center point handy - this is now a sleek tire. To add a smooth circular tread pattern around the tire: Make a rectangle the size of the tread depth. Lathe the rectangle through 24 degrees. Draw the thread pattern as a single item. Extrude the tread pattern bigger than the original rectangle. Rotate the thread pattern to the right angle. Repeat the tread pattern five times (the outer two will only have the very edges cut into the tire). Subtract the tread pattern from the rectangle. Repeat the tread pattern 15 times around the center point of the tire - (24*15 = 360 degrees). Align the 15 tread pattern templates with the center of the tire. Subtract the tread 15 patterns from the tire.