50:1 Metal Gearmotor 37Dx54L mm 24V (Helical Pinion) (POLOLU-4683)

Hi again, i need 4xDC motors for a 5kg 4wd all terrain robot. I’m confused with the gear ratios. I need a motor with high torque for climbing steep inclines and rough terrain, but also needs to have a burst of good power/speed if i need it. Looking at all the gear ratios has me a little confused so would appreciate any help again thank you! : )

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