Yeah, most of the motors we use are in the 300-450W variety. The issue then is getting a speed controller that is beefy enough to handle the motors. Those 18AH batteries should be sufficient.
On Fri, Apr 12, 2013 at 4:40 PM, Niels Erik Kristensen <[email protected]> wrote: > WOW-About 36watt!! No wonder you dont make donouts on grass :-) My > motors are 800 watt each! On 14,4 volt (lipo battery) > Den fredag den 12. april 2013 22.54.27 UTC+2 skrev > [email protected]: > >> Mike and Derek, >> Thank you for your input. What "motors" would you advise in the 24V >> range? The Panther weighs about 100lbs now, but will ultimately be around >> 135lbs range. >> >> I currently have x2 12V Batteries, 18Ah each (Standby use 12.6 - 13.8V, >> 2.7A, Cycle Use 14.5-14.9V -5.4A). >> My motors datasheet shows (for left motor, directly mounted to sprocket - >> Right motor is spinner clockwise and performance slightly different): >> >> Data Type Value Range No Load Current (A) 0.9-0.7 >> Speed (RPM) 116.2-95.1 Stall Load Torque (Nm) 21.3-17.5 >> Current (A) 13.0-14.7 Peak Power Power (W) 60.0-49.1 >> Torque (Nm) 11.1-9.1 Nominal Power (W) 36.5 Nominal (Peak Efficiency) >> Speed >> (RPM) 82.1 Nominal Current (A) 3.5 Nominal Torque (Nm) 4.3 Nominal >> Again, >> your input is very helpful! >> Cheers from Utah, >> Loic >> >> On Friday, April 12, 2013 1:24:25 PM UTC-6, [email protected] wrote: >>> >>> Mike is right. 24V motors are better than 12V motors since the 24V >>> motors will be more efficient and actually use less amperage. Sounds like >>> you just need to get 24V motors with more torque. Also if the batteries >>> are not up to the task to delivery the amps the power hungry motors are >>> asking for, that will also translate into no power. The 24V scooter motors >>> in my KV-2 are more than powerful enough to propel the 150lb. tank. The >>> batteries I was testing with (7AH x2, 12V in series to produce 24V@7AH) >>> could make the tank do neutral turns while fully charged, but the power >>> hungry motors will drain the puny batteries in less than 10 minutes. I use >>> less powerful motors on my Sturmtiger. It weighs in at about 100lbs. With >>> proper batteries it will do neutral turns on concrete with my 190lbs >>> sitting on the tank. I don't sit on it anymore since I bent a few of the >>> swing arms by doing that... :) >>> >>> >>> On Fri, Apr 12, 2013 at 2:04 PM, Mike Mangus <[email protected]> wrote: >>> >>>> Dropping down in voltage probably not the answer for a zero turn on >>>> grass. I tried a couple different voltages (6 ans 12) and found the lesser >>>> voltage simply didn't have enough omph to turn the tank. 12v was obviously >>>> better. If I could I would bump up to 24 or even 36 volts to get the power >>>> required to zero turn, not to mention less amp draw over a 12v system. >>>> >>>> Tracks that grab will actually hurt pivot turning. Smoother tracks >>>> seem to let the tank pivot easier. >>>> >>>> Mike >>>> >>>> >>>> ------------------------------ >>>> *From:* "[email protected]" <[email protected]> >>>> *To:* [email protected] >>>> *Sent:* Friday, April 12, 2013 1:53 PM >>>> *Subject:* [TANKS] Re: New Business >>>> >>>> Not yet Neil. The motors are 24V and not powerful enough. no problem >>>> making a 360 on asphalt or concrete. We only reach 2km/hr or 1.3 mph (12 >>>> km/hr scale). This tank cruised at 46 km/hr. We are looking into other >>>> motors right now (12V with more amps). Also we are concerned about the >>>> "accurate" Panther tracks which "grooves" might "grab" on the grass on a >>>> 360degree turn. That would not be good for plastic tracks. Suggestions and >>>> critics are welcomed! >>>> >>>> On Friday, April 12, 2013 3:21:51 AM UTC-6, Neil Rochford wrote: >>>> >>>> Can your tank do zero turns on grass ? >>>> Neil R >>>> >>>> -- >>>> -- >>>> 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 rctankcombat...@googlegroups.**com >>>> Visit the group at >>>> http://groups.google.com/**group/rctankcombat<http://groups.google.com/group/rctankcombat> >>>> >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "R/C Tank Combat" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to rctankcombat...@googlegroups.**com. >>>> For more options, visit >>>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> >>>> . >>>> >>>> >>>> >>>> >>>> -- >>>> -- >>>> 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 rctankcombat...@googlegroups.**com >>>> Visit the group at >>>> http://groups.google.com/**group/rctankcombat<http://groups.google.com/group/rctankcombat> >>>> >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "R/C Tank Combat" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to rctankcombat...@googlegroups.**com. >>>> For more options, visit >>>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> >>>> . >>>> >>>> >>>> >>> >>> -- > -- > 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 received this message because you are subscribed to the Google Groups > "R/C Tank Combat" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- -- 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 received this message because you are subscribed to the Google Groups "R/C Tank Combat" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
