3D printed RC chassis /1：10(My custom chassis design for the Evo5）

A chassis custom-made for my EVO5. Maximizing the use of 3D printing to create a remote-controlled car; no need to buy shock absorbers, yet still achieving the effect of damping springs; the calipers must be visible; perfect body structure lines perfectly replicate the real car body; a more realistic reproduction of the integration of the body frame and the body surface. Materials List： Screws 8mm (several) 12mm (several) 20mm (several) 15mm (2) 30mm (4) 50mm (5) Nuts (several) Hot Melt Threaded Insert M3Height 3mmOuter Diameter 4.5mm (4) Bearings 12184 (2) Bearings 8123.5 (4) Teflon Tubing 4cm long

0.3mm Thick Spring Steel Sheet

1. The body of the Evo5 car is mostly bonded using hot melt adhesive on the back. Hot melt adhesive has many advantages: high strength, good flexibility, and some impact resistance. Minor adjustments can be made during the bonding process, and damaged parts can even be replaced by cutting. It can also fill gaps in body parts (I used black hot melt adhesive). Strong instant adhesive, on the other hand, bonds too quickly, leaving no time for adjustment, resulting in a near-rigid connection. Replacing a part of the body is very difficult.

2. For the body, I recommend printing individual parts to greatly increase the success rate. I mostly used PLA for the body to minimize layer texture and make post-processing easier. For the chassis, I used PETG.

3. For the body glass, I used 0.2mm thick transparent PVC sheets, which reduces a lot of sanding work.

4. Regarding TPU damping, I used 0.3mm spring sheets. These spring sheets should be available at your local construction market and are very inexpensive. I utilized the damping effect of TPU combined with the spring sheets to effectively simulate damping. However, there are still some issues: if your local temperature is high, I suggest increasing the filling or wall thickness when printing the TPU damping sheets; conversely, if the temperature is low, you can reduce the amount.

I wanted my remote control car to be simple enough without sacrificing playability, so I used spring sheets instead of traditional remote control car spring damping. Spring sheets are inexpensive, strong, and provide damping. If only TPU were used, the TPU components would collapse after a period of time, leading to insufficient support.

1. I still used screws to secure the 3D-printed body shell to the vehicle body. Although this might take an extra minute, I believe it's safer than using magnets because the 3D-printed shell is significantly heavier than a traditional one.

2. Using TPU 95A to print wheels results in poor grip, and the same issue exists even with 90A and 85A. I'm working on this (assuming tires are unavailable).

3. For the headlights, I used 3mm diameter LED beads (both headlight and fog light openings are 3mm in diameter).

4. Instead of using a previous method (using transparent PVC sheets), I printed thin sheets directly from transparent filament and then deformed them through baking. The actual headlight glass has many prismatic stripes inside, and simulating this with the 3D printer's layer texture is a great idea.

5. Currently, I only make rear-wheel-drive vehicles because 3D printing is too weak for four-wheel-drive vehicles, and I strongly dislike buying metal parts from stores to replace them. I try to use 3D printing as much as possible, except for some parts that are simply unsolvable.

6. I hope my creations can be displayed statically at home, not just outdoors. However, I have to face another problem: more aggressive driving, such as rollovers, is a nightmare for 3D-printed RC cars! Okay, I can appreciate their bodies statically, and also experience their drifting postures on relatively smooth surfaces. That's enough for me! I hope everyone has fun. If you have any questions, please leave a message in the comments section! I won't miss any opportunity to answer questions.

Detailed installation video (first part shows body panel installation; second part shows chassis installation). Please leave a message if you have any questions. https://youtu.be/I5YrYsBULMA