oh, 72W * 2, as i would use 2 such motors, so 15W/kg, which should be fine. can somebody please confirm this ?
2010/6/21 Peter Pišljar <[email protected]> > hmmm, i've been doing some more research and i came up with this: > > normal cars have power-to-weight ratio from 20-50W/kg > so if my motor is 24V, and it drains 3A this is 72W > if my tank weights 10kg this is 7.2W/kg, which is a little bit low, but > might still me ok. > > am i right on this equations ? > > 2010/6/21 Peter Pišljar <[email protected]> > > my tank will weight less becouse it will be 1:12, thats why i have problems >> as i cant find any information on such thanks. >> also most of you guys use normal motors as i will be using stepper motor. >> the reason for this is that i wont be making rc battle thank, but rather >> a robot. so i need precise movement and ability to track the movement. >> this is simple with stepper, and its very precise. tank will be made out of >> aluminium, >> so this will save some weight too. so 15kg is top limit i think. >> >> currently i'm looking at a stepper with 18,7kg*cm torque, but this number >> doesnt tell me anything as i'm not familiar with mechanics. i'm computer >> hardware student. >> >> >> >> 2010/6/21 Ben Holko <[email protected]> >> >> Most tanks also weigh quite a bit more than 15kg, I would think more like >>> 30kg - 60kg would be the average, of course the smaller examples may get as >>> low as 15kg. >>> >>> >>> -----Original Message----- >>> From: [email protected] [mailto: >>> [email protected]] On Behalf Of neroc >>> Sent: Monday, 21 June 2010 10:41 PM >>> To: R/C Tank Combat >>> Subject: [TANKS] Re: motor choice >>> >>> Most people with successful tanks use scooter motors between 250-450 W . >>> about 1/2 hp >>> >>> Neil R >>> >>> >>> >>> On Jun 21, 1:27 pm, Peter Pišljar <[email protected]> wrote: >>> > hello. >>> > >>> > can somebody give me some ideas or equations on how strong must my >>> > motor be, to move some weight. >>> > >>> > lets say my tank is 15kg, i need to know how much torque and horse >>> > power should my motor have to move it easily. >>> >>> -- >>> You are currently subscribed to the "R/C Tank Combat" group. >>> To post a message, send email to [email protected] To >>> unsubscribe, send email to [email protected] >>> Visit the group at http://groups.google.com/group/rctankcombat >>> >>> -- >>> You are currently subscribed to the "R/C Tank Combat" group. >>> To post a message, send email to [email protected] >>> To unsubscribe, send email to [email protected] >>> Visit the group at http://groups.google.com/group/rctankcombat >>> >> >> > -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat
