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        Q: How to control the speed of a DC motor?
A: Your motor 's over rated for what you requires . Bikes use 24v Lithium systems of approximately 6Ah with little assisting solely automobiles in the hubs . Thats 144w versus your 2340watts .   Power wheelchairpersons and scooters use 24v automobiles with 30Ah to 70Ah automobile type batteries and get 16+ kilometre range .   The numbers of batteries you carry will use up lots of power on hills just moving themselves . The Chinese have had electrical bicycles for some time and may sell controllers . 

Q: What electrical device can be used to control the speed of an electrical motor?
A: The accelerator is a speeding comptroller . Most automobiles will collaborate without them . It changes the voltage to the motor . You can leave it off if you securely duct tape yourself to the vehicle and have a lot of insurance . 

Q: What is the speed of light and the universal speed limit?
A: Of course . Some people does n't have a what it takes to regulateits own right behaviours and that 's why we have legislation to govern roadspeed and other legislation protecting peoples .