Originally Posted by
E85S4
Why does thunder power not list kv ratings or suggested voltages? Looking for a spec on the Z3R 550 4 turn. Has anyone done some independent research?
Because Kv numbers for slotted sensor motors are subjective. Stator design, rotor type and strength, motor timing all effect Kv. Most numbers are made up. This is why we don’t publish numbers. However if you must.
Thunder Power Z3R 550 Motors
4.0 4.5 5.0 5.5
Part Number TPM-550A040 TPM-550A045 TPM-550A050 TPM55A055
Voltage 7.4 7.4 7.4-11.1 7.4-11.1
RPM/7.4V 37814 33596 30340 27602
kV 5110 4540 4100 3730
Power (W) 950 900 850 800
Max Current (A) 133 126 120 110
Efficiency (%) 92 92 94 94
Diameter (mm) 35.8 35.8 35.8 35.8
Length (mm) 65.3 65.3 65.3 65.3
Shaft Diameter (mm) 5.0 5.0 5.0 5.0
Weight (g) 248 248 248 248