Estimated Run Time
06-11-2014, 05:47 AM
#1
Estimated Run Time
Hi,
Just need to clarify some figures as I'm new to this R/C car scene. I am getting a 4400 mAh battery and pairing it with a 7.5 T motor from Speed Passion, bundled with an ESC that draws 40 A on normal load. Based on my calculations, the battery will last 6 minutes before running flat, is it true? Thanks!
Battery: http://www.hobbyking.com/hobbyking/s...case_Pack.html
Motor & ESC: http://www.rcmart.com/speed-passion-...o-p-27270.html
Just need to clarify some figures as I'm new to this R/C car scene. I am getting a 4400 mAh battery and pairing it with a 7.5 T motor from Speed Passion, bundled with an ESC that draws 40 A on normal load. Based on my calculations, the battery will last 6 minutes before running flat, is it true? Thanks!
Battery: http://www.hobbyking.com/hobbyking/s...case_Pack.html
Motor & ESC: http://www.rcmart.com/speed-passion-...o-p-27270.html
06-11-2014, 07:14 AM
#2
The esc does not draw the amps, the motor does. The esc just controls the flow of power from battery to motor. You should get a more than 6 min just based on experiance. Off road guys run 4600 shorties with 6.5/7.5 motors and make 10 minute mains. Run time is going to depend on gearing, time spent at full throttle and braking. Excessive wheel spin will also cause a decrease in runtime, as does a heavy car and a bound up drivetrain.
But may I ask if your that new to the RC scene that you are unsure of run time, why would you get one of the fasfest motors you can buy right from the start?
But may I ask if your that new to the RC scene that you are unsure of run time, why would you get one of the fasfest motors you can buy right from the start?
06-11-2014, 07:20 AM
#3
The esc does not draw the amps, the motor does. The esc just controls the flow of power from battery to motor. You should get a more than 6 min just based on experiance. Off road guys run 4600 shorties with 6.5/7.5 motors and make 10 minute mains. Run time is going to depend on gearing, time spent at full throttle and braking. Excessive wheel spin will also cause a decrease in runtime, as does a heavy car and a bound up drivetrain.
But may I ask if your that new to the RC scene that you are unsure of run time, why would you get one of the fasfest motors you can buy right from the start?
But may I ask if your that new to the RC scene that you are unsure of run time, why would you get one of the fasfest motors you can buy right from the start?
06-11-2014, 07:25 AM
#4
Yes you should if not going full throttle, but drifting is going to drain the battery pretty good due the the nature of intentionally spinning the wheels. Also with drifting you going to build up alot of excess heat, I would suggest a cooling fan if you dont have one. You might want to look up the drifting thread on here as those guys might be more knowledgeable.
06-11-2014, 07:52 AM
#5
Yes you should if not going full throttle, but drifting is going to drain the battery pretty good due the the nature of intentionally spinning the wheels. Also with drifting you going to build up alot of excess heat, I would suggest a cooling fan if you dont have one. You might want to look up the drifting thread on here as those guys might be more knowledgeable.
06-11-2014, 08:12 AM
#6
06-11-2014, 03:26 PM
#7
That ESC states that it can handle motors > 7.5 turns (like 8.5 - 25.5 turns). Thus, you shouldn't use it with a 7.5 turn motor.
06-13-2014, 04:57 AM
#8
I'm not sure if my motor is a 7.5 T or not, will need to check with my friend as he has the full specs. Thanks!
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