Bl Cen matrix build

[brushlessboy16]

replied :D

Differential Ratio: 2.8888888888888888888889
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 66
Pinion Tooth Count: 13
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.65
Tire Ballooning (inches): .15
Motor Current Draw: 80
Motor coil Ω: 0.006
Spur/Pinion Ratio: 5.08 : 1
Total Ratio: 14.66667 : 1
Tire Circumference (inches): 18.69 inches (474.79 mm)
Total Motor Speed: 39644 RPM
Vehicle Speed: 47.85 mph (76.86 km/h)
Estimated Adjusted Speed: 45 mph (72 km/h) - 6% loss
Effective KV Value: 2142.92
KT constant: 0.61 oz-in/A
Motor Torque: 0.26 ft-lbs
Final Torque: 3.76 ft-lbs
Final Power: 1480 watts (2 HP)


thats with the stock diffs and spur.
needs a 13t pinion for 45mph. thats doable/


here is with 46t spur
Differential Ratio: 2.8888888888888888888889
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 9
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.65
Tire Ballooning (inches): .15
Motor Current Draw: 80
Motor coil Ω: 0.006
Spur/Pinion Ratio: 5.11 : 1
Total Ratio: 14.76543 : 1
Tire Circumference (inches): 18.69 inches (474.79 mm)
Total Motor Speed: 39644 RPM
Vehicle Speed: 47.53 mph (76.34 km/h)
Estimated Adjusted Speed: 45 mph (72 km/h) - 6% loss
Effective KV Value: 2142.92
KT constant: 0.61 oz-in/A
Motor Torque: 0.26 ft-lbs
Final Torque: 3.78 ft-lbs
Final Power: 1480 watts (2 HP)

would need a 9t for that, pretty sure no one makes a 9t lol

[jhautz]

Are you sure you are using the right front/rear diff ratio? I thought that the Truggy came with 38/11 diff gears on the Cen. The RTR Cen buggy comnes with the 26/9 gears and the pro buggy came with the 38/11 gears, but I thought all of the truggies came with 38/11 which changes your gearing picture quite a bit.

Double check the actual ratio you have. I could be wrong, but mine came with the 38/11 (3.455 ratio) if I remember right.

Originally Posted by brushlessboy16

replied :D

Differential Ratio: 2.8888888888888888888889
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 66
Pinion Tooth Count: 13
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.65
Tire Ballooning (inches): .15
Motor Current Draw: 80
Motor coil Ω: 0.006
Spur/Pinion Ratio: 5.08 : 1
Total Ratio: 14.66667 : 1
Tire Circumference (inches): 18.69 inches (474.79 mm)
Total Motor Speed: 39644 RPM
Vehicle Speed: 47.85 mph (76.86 km/h)
Estimated Adjusted Speed: 45 mph (72 km/h) - 6% loss
Effective KV Value: 2142.92
KT constant: 0.61 oz-in/A
Motor Torque: 0.26 ft-lbs
Final Torque: 3.76 ft-lbs
Final Power: 1480 watts (2 HP)


thats with the stock diffs and spur.
needs a 13t pinion for 45mph. thats doable/


here is with 46t spur
Differential Ratio: 2.8888888888888888888889
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 9
Total Voltage: 18.5
Motor KV: 2200
Tire Diameter (inches): 5.65
Tire Ballooning (inches): .15
Motor Current Draw: 80
Motor coil Ω: 0.006
Spur/Pinion Ratio: 5.11 : 1
Total Ratio: 14.76543 : 1
Tire Circumference (inches): 18.69 inches (474.79 mm)
Total Motor Speed: 39644 RPM
Vehicle Speed: 47.53 mph (76.34 km/h)
Estimated Adjusted Speed: 45 mph (72 km/h) - 6% loss
Effective KV Value: 2142.92
KT constant: 0.61 oz-in/A
Motor Torque: 0.26 ft-lbs
Final Torque: 3.78 ft-lbs
Final Power: 1480 watts (2 HP)

would need a 9t for that, pretty sure no one makes a 9t lol