Model information
Description
Purpose
This modification provides a 19:1 gear reduction for the Robak 2, designed to increase torque while reducing top speed. This setup aims to improve acceleration, climbing capacity, and energy efficiency at low speeds, while reducing motor startup hesitation in sensorless configurations.
Practical Uses
The gear set is intended for use in the Robak 2 to enhance low-speed performance and climbing capabilities.
Included Parts
- Sleeve.stl
- MotorPlate.stl
- Gear1_13T.stl
- Gear2_31T.stl
- Gear3_14T.stl
- Gear4_38T.stl
- TopDeckR.stl
Assembly Guidance
Users must print the updated version of the TopDeck rear. Assembly requires removing a thin piece of plastic from the Chassis using pliers. Required hardware includes various M3 and M4 screws, nuts, a brass standoff, and specific bearings (3x 15x10x4mm and 2x 10x5x4mm).
Original text by the author on Printables
<h4>Update your Robak 2 with this 19:1 gear reduction mod, which increases torque at the expense of top speed. Benefits include:</h4><ul><li>Higher acceleration</li><li>Improved climbing capacity</li><li>Reduced motor startup hesitation with sensorless setups</li><li>More energy efficient at low speeds.</li></ul><p> </p><h5>You'll need to print the updated version of the TopDeck rear </h5><p><img class="image_resized" style="width:52.94%;" src="https://media.printables.com/media/prints/699847/rich_content/5e74c4b7-610d-40fa-894a-766c58525a17/2.jpg#%7B%22uuid%22%3A%226a6d5d81-f53d-49cd-befd-17d57b43c65c%22%2C%22w%22%3A1102%2C%22h%22%3A1011%7D"></p><h5>and remove the thin piece of plastic from the Chassis using pliers.</h5><p><img class="image_resized" style="width:57.09%;" src="https://media.printables.com/media/prints/699847/rich_content/57a1892c-b979-4a1d-91b9-10eea0754920/3.jpg#%7B%22uuid%22%3A%224e331366-fbbc-40a1-9fae-2e77f8689e3b%22%2C%22w%22%3A1223%2C%22h%22%3A914%7D"></p><p> </p><h5>Fasteners</h5><figure class="table"><table><tbody><tr><td><i>Motor</i></td><td><ul><li>1x M4 grub screw</li><li>4x DIN 912 M3 20mm Socket Head</li></ul></td></tr><tr><td><i>Gears</i></td><td><ul><li>2x DIN 912 M3 8mm Socket Head</li><li><strong>1x 20mm M3 hex brass standoff</strong></li></ul></td></tr><tr><td><i>TopDeck</i></td><td><ul><li>3x DIN 7991 M3 16mm Countersunk Head</li><li>1x DIN 7991 M3 20mm Countersunk Head</li><li>2x DIN 7991 M3 12mm Countersunk Head</li><li>5x DIN 562 M3 Thin Square Nut</li></ul></td></tr></tbody></table></figure><h5>Bearings</h5><ul><li>3x 15x10x4mm bearing</li><li>2x 10x5x4mm bearing</li></ul><figure class="image"><img src="https://media.printables.com/media/prints/699847/rich_content/a18395c1-f16e-4594-bb06-3ebd48c57520/assembly.jpg#%7B%22uuid%22%3A%228a9e8ad0-2633-4b9d-af30-36a88da04137%22%2C%22w%22%3A1645%2C%22h%22%3A818%7D"></figure><figure class="media"><oembed url="https://youtu.be/lrWFLDKa_W4?feature=shared"></oembed></figure><figure class="media"><oembed url="https://youtube.com/shorts/XPom63QiH3U?feature=shared"></oembed></figure>
Questions and contributions