This would be calculation of 15t, less speed but more torque, not sure if this would cause motor issues. Does gearing too low put strain on motor and esc or only reduce speed and add stress to drive train...
Differential Ratio: 2.23:1
Transmission Ratio: 1:8.9
Other Ratio: 1
Spur Tooth Count: 64
Pinion Tooth Count: 15
Total Voltage: 7.40
Motor KV: 3300
Tire Diameter (inches): 4.5
Tire Ballooning (inches): 0
Motor Current Draw: 30
Motor Coil Resistance: 0
Spur/Pinion Ratio: 4.27 : 1
Total Ratio: 9.51467 : 1
Tire Circumference (inches): 14.14 inches (359.08 mm)
Rollout: 1.49:1
Total Motor Speed: 24420 RPM
Vehicle Speed: 34.36 mph (55.19 km/h)
Effective KV Value: 3300
KT constant: 0.41 oz-in/A
Motor Torque: 0.06 ft-lbs
Final Torque: 0.61 ft-lbs
Final Power: 222 watts (0.3 HP)