i have a dc permanant magnet electric motor and want to use a gearbox to vary the speed of an electric vehicle.The vehicle weights about 200kg and have a maximum speed of 2m/s.
i just have only one choice of varying the speed(so i cant use a electronic controller), a step down gearbox which is:
http://www.thegreenreaper.co.uk/ShowDetails.asp?id=564
I am not sure why,but this gearbox have a maximum speed of 2000rpm for the motor input. The maximum gear ratio is 68:1 and the lowest is 17:1.
i know that to calculated the output speed is equal to:
rpm = speed/ 2*phi*r
since there is a limit on the input speed,the thing that i am confius about is:
How do you calculated the maximum speed that the motor could achieved(in this case is 2m/s), when the maximum input speed for the gearbox is 2000rpm(which is basically at the NO LOAD speed of a motor)....
2007-03-11
08:39:23
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1 answers
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asked by
eddy1234
1
in
Engineering