build a gmaxx and i need help

[Maxxrickard]

this should be a better setup:
Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 14
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.8
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0.006
Spur/Pinion Ratio: 3.29 : 1
Total Ratio: 14.12857 : 1
Tire Circumference (inches): 18.22 inches (462.82 mm)
Rollout: 1.29:1
Total Motor Speed: 40700 RPM
Vehicle Speed: 49.71 mph (79.85 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A
Motor Torque: Amperage not specified...
Final Torque: Amperage not specified...
Final Power: Amperage not specified...

[ANGRY-ALIEN]

That's look cool... but it might be geared a little high for bashing... I would 'personally' go down a tooth or two on the pinion... see the below examples


Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 11
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.8
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 4.18 : 1
Total Ratio: 17.98182 : 1
Tire Circumference (inches): 18.22 inches (462.82 mm)
Rollout: 1.01:1
Total Motor Speed: 40700 RPM
Vehicle Speed: 39.05 mph (62.74 km/h)... Full charge at 22v - 46.44 mph (74.6 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A

Differential Ratio: 4.3
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 12
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.8
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor Coil Resistance: 0
Spur/Pinion Ratio: 3.83 : 1
Total Ratio: 16.48333 : 1
Tire Circumference (inches): 18.22 inches (462.82 mm)
Rollout: 1.11:1
Total Motor Speed: 40700 RPM
Vehicle Speed: 42.61 mph (68.44 km/h)... Full charge at 22v - 50.67 mph (81.39 km/h)
Effective KV Value: 2200
KT constant: 0.61 oz-in/A


With smaller pinions, you will still get good top speeds and increased acceleration...


Alien