Hi there,Not much to choose between the two motors as they have exactly the same rating. If the higher speed motor is geared to give the same output speed s the lower,ie,half it,s speed,then the torque is doubled,matching the other motor. With the choice of motors you have been given I would pick the motor that matches your final drive with transmission losses kept to a minimum. The less gearing up or down you do,the lower your transmission losses will be. If you work out the power you need to climb the grade and then divide this by your motor,s power,you will get an idea of the gearing ratio you need. The choice of wheel size will affect the amount of torque you require, choose wisely! Since performance is biased to load rather than speed you can afford to really gear the motor down to multiply torque, slow and steady wins the day. Regards Andy Wilson
Sent from my iPad On 23 Jun 2013, at 18:08, "Aankit Kumar" <[email protected]> wrote: > I am an Engineering student and working on a project to make an electric > drive for electric vehicle. I have a limitation to use a 0.5 hp brushed pmdc > motor.I have two options: 1.2 Nm 3000 rpm motor or 2.4 Nm 1500 rpm motor. > I am confused whether to use high torque or high rpm motor. For transmission > we have a continously variable transmission(CVT) which has a advantage that > the motor can run on constant rpm. But I have a gradeint test with 5 degree > inclination or slope to pass with vehicle weight as 270 Kg with passengers. > Which motor should i use?????PLEASE HELP....PLEASE..PLEASE reply.. > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130623/00e61784/attachment.htm> > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA > (http://groups.yahoo.com/group/NEDRA) > _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
