150g Front Flipper Battlebot

thingiverse

Front Flipper Robot: A Compact Combat Bot. This is a 150g robot designed for combat with nondestructive opponents, utilizing flippers, hammers, and wedges. The build is simple, requiring minimal tools. I'm attaching the .STEP file for those who want to modify or edit it. You'll need to add 0.5mm titanium wedges and make adjustments for full combat functionality. Assembly Tricks: Use a paper clip to attach the flipper to the servo arm; cut off excess after bending. Alternatively, tap the servo arm to accept an M2 bolt for a secure fit. The Lego hub has tolerances that allow for easy printing on my printer, providing a snug fit. You can also use a tighter tolerance version if needed. I recommend using #3 for the top brace and wedges. **Hardware** - 3qty M3x12: https://amzn.to/3cb8L3Z - 1qty M2 x12: https://amzn.to/2V8CfZ7 - Small Zip Ties: https://amzn.to/2UQZYy8 - Paper Clip - Hot Glue/Superglue - 3-24 Plastite Screws: https://amzn.to/2AInL9z - Wheels: Lego 24x14 Tire: https://amzn.to/2yLfDUd **Tools** - M2 Tap: https://amzn.to/2RhQ4TY **Electronics** - Flipper Servo: KST DS315MG or KST DS215MG (https://alofthobbies.com/kst-ds315mg-servo-48kg-666-oz-in-07sec-high-voltage.html) - Drive Motors: N20 Micro Gearmotor 30:1 or 1000rpm (https://amzn.to/2JsTwpA) - ESC: Endbots DESC (https://www.endbots.com/collections/products/products/endbots-desc?variant=5580585992221) - RX: Your choice; the Endbots DESC comes with a Spektrum receiver built in. - TX: Your choice; I use a Spektrum DX6 (https://amzn.to/2qk8RQA) - Battery: Nano-tech 300mah 2S Lipo Pack (https://hobbyking.com/en_us/turnigy-nano-tech-300mah-2s-45-90c-lipo-pack.html) You can use alternative servos, such as the Corona DS929HV, for a cheaper option. However, you'll need to adjust the linkages to achieve full travel due to their shorter servo arms. To save weight, consider using SC-2110p ProComp wheels (http://www.132slotcar.us/store/product_info.php?products_id=4523) instead of Lego wheels.