TINY TRAK 18mm Drive Wheel Micro RC Tank

thingiverse

Have you heard of the Tiny Trak? If not, you absolutely should make one! It's just too cute! I got the wheel file from right here. This is where it all started. However, the original file required gluing the drive wheel to the servo shaft, so I made this version with a flat spot instead. That way, it won't slip and requires no glue at all. Here are the steps: 1. Print out the file. 2. Use a knife to scrape off the edge of the middle hole as shown in the picture. 3. Cut a flat spot on both sides of the servo shaft. Start by cutting just a little bit first, then try to push the wheel in. The best fit is when it's snug. You don't want to cut too much and end up with too many gaps instead. 4. Screw the wheel onto the servo. Here are the parts you'll need: Receiver https://www.banggood.com/DIY-FRSKY-8CH-Receiver-RX-PPM-Output-For-X9DPLUS-XJT-DJT-DFT-DHT-p-987247.html?p=DG23031123036201501P This is the one I'll be changing to. It's currently on its way to me somewhere in the world. https://www.banggood.com/2_4G-8CH-D8-Mini-FrSky-Compatibel-Receiver-With-PWM-PPM-SBUS-Output-p-1140478.html?p=DG23031123036201501P You'll also need this 1S to 5V booster if your RX needs at least 5V. https://www.banggood.com/Matek-DC-DC-Voltage-Booster-1S-Lipo-to-5V-Synchronous-Step-up-Converter-p-990756.html?p=DG23031123036201501P You can use any 9g servo, but I've found that these Towerpro ones spin faster than the HBK Hextronics. https://www.banggood.com/6-X-TowerPro-SG92R-Mini-Micro-Servo-9g-2_5kg-For-RC-Airplane-p-1164389.html?p=DG23031123036201501P Micro VTX https://www.banggood.com/5_8g-48CH-25MW-VTX-600TVL-NTSC-FPV-Camera-for-Eachine-QX95S-QX105-Micro-FPV-Racing-Drone-p-1235875.html?p=DG23031123036201501P A 1s 45C Lipo will last you a long time. https://www.banggood.com/5PCS-Eachine-E010-3_7V-150MAH-45C-Upgrade-Battery-USB-Charger-Set-RC-Quadcopter-Spare-Parts-p-1103569.html?p=DG23031123036201501P