OpenRC Go-Kart (1985) with Ackermann Steering

prusaprinters

<p>Go-Kart (1985) OpenRC with Ackermann Steering</p><p>&nbsp;</p><p>Software can be found at:&nbsp;<br><a href="https://github.com/projunk/RaceCarESP32.git">https://github.com/projunk/RaceCarESP32.git</a></p><p>&nbsp;</p><p>=&gt; This OpenRC version assumes the model has been printed with scale factor of 2.5;<br>all parts have already been scaled by factor 2.5.</p><p>&nbsp;</p><p>ECHO: "-------------------------------------"<br>ECHO: "THEORETICAL TOP SPEED"<br>ECHO: "-------------------------------------"<br>ECHO: "850Kv,2S", 81, "Km/h"<br>ECHO: "850Kv,3S", 121, "Km/h"<br>ECHO: "-------------------------------------"<br>ECHO: "920Kv,2S", 87, "Km/h"<br>ECHO: "920Kv,3S", 131, "Km/h"<br>ECHO: "-------------------------------------"</p><p>&nbsp;</p><p><strong>Recommended materials:</strong></p><ul><li>Tires, ninjaflex (5% infill)</li><li>Axles, ABS (50% infill)</li><li>Other parts, PLA (20% infill)</li></ul><p>&nbsp;</p><p>T<strong>o get more crash resilience, following parts I probably will print later on in Ninjatek:</strong></p><ul><li>technic_brick_motor_left</li><li>technic_brick_motor_right</li><li>technic_steering_arm_motor_M8_left</li><li>technic_steering_arm_motor_M8_right</li><li>technic_brick_servo</li></ul><p>&nbsp;</p><p><strong>Following parts are required for the OpenRC version with Ackermann Steering:</strong></p><ul><li>Rim_motor_2830 (4x) or Rim_motor_2212 (4x) (ABS recommended)</li><li>technic_brick_motor_left (1x) (ABS recommended)</li><li>technic_brick_motor_right (1x) (ABS recommended)</li><li>technic_steering_arm_motor_M8_left (1x)</li><li>technic_steering_arm_motor_M8_right (1x)</li><li>technic_brick_ackermann_left (1x)</li><li>technic_brick_ackermann_right (1x)</li><li>technic_brick_servo (1x)</li><li>servo_connector (1x)</li><li>ElectronicsBrick (1x)</li><li>ElectronicsPlate (1x)</li><li>technic_pin_with_friction (1x)</li></ul><p>&nbsp;</p><p>All remaining parts can be taken from from the original design (requires scaling them with factor 2.5)</p><p>&nbsp;</p><p><strong>Optional parts:</strong></p><ul><li>Minifig Lego Jo (designed by <a href="https://www.prusaprinters.org/social/15952-jakub-koci).">https://www.prusaprinters.org/social/15952-jakub-koci).</a> This part has been scaled to match the seat. It is connected to the battery via "Minifig_body_bottom".</li></ul><p>&nbsp;</p><p>&nbsp;</p><p><strong>Electronics:</strong></p><ul><li>Racerstar BR2830 850kv (4x) or Racerstar BR2212 930kv (4x)</li><li>Servo MG996R</li><li>ESP32 development board</li><li>MPU6050 (gyro/acc sensor)</li><li>4 in 1 ESC 30A</li><li>LED strip WS2812</li><li>Alarm Beeper</li><li>Power distribution board</li><li>Battery, e.g.: https://hobbyking.com/nl_nl/turnigy-nano-tech-shorty-4200mah-2s2p-65-130c-hardcase-lipo-pack-roar-approved.html</li><li>Transmitter/receiver, e.g.: https://hobbyking.com/nl_nl/hobbykingr-tmhk-gt2b-3ch-2-4ghz-transmitter-and-receiver-w-rechargable-li-ion-battery-1.html</li></ul><p>&nbsp;</p><p>Hardware:</p><ul><li>bearing MR128ZZ (6x)</li></ul><p>&nbsp;</p><p>Remarks:</p><ul><li>the bearings are pushed into parts technic_plate_toothed_end_ackermann_no_teeth and technic_plate_toothed_end_no_teeth_m4. M8 threaded rods are used as axles for those bearings</li></ul>