Ursa 29T lower Diff Gear replacement

cults3d

Recently I attempted to assemble the latest URSA Bear truck, but encountered a major issue with the gear mesh in the new GB03 axles. The gears started skipping, which was not happening before. To resolve this problem, I created a slightly larger diff gear to tighten up the mesh between the upper counter gear and the differential without altering the axle case or any other components. The stock Ursa gear is 28T, but my new gear has 29 teeth, which slightly reduces the gear ratio of the axles. This modification was done as a temporary fix, so it may lightly touch the inside of the axle case initially, but will wear away and break in over time. I tested this solution on a bench and under some load on the floor for a few minutes without any issues, but your results may vary. Feel free to try it out and see if it works for you.