The gearbox is not machined correctly. Not 100% round = Not usable! Replaced with 4 other gears to confirm this is the problem. You guys don't test your stuff before shipping!
ZhengGuang Hyper Skidding Blue UD2196A RC Stunt Drift Car/Gesture RC Car
58 Review
π§ Tapered Pinion Diameter Module - CNBTR
3 Review
π The Ultimate Guide to Boston Gear NB24B Pressure Angle: Features, Benefits, and Applications
3 Review
π€ 80Pcs Plastic Robot Gearbox Motor: Optimal Performance for Robotic Projects
3 Review