↑ Return to Brushless Cars

Maintenance

OPERATING TEMPERATURE

There are several reasons equipment may heat up, if this is the case here are possible causes. Too hot – greater than 160F/70C. Many times there may be more than one reason for over heated equipment. In this case choose the most logical fix.

Motor – Too Hot
– Gearing set too tall. Reduce Pinion size or increase spur gear size
– Binding within the drivetrain. When the motor is disconnect from the drivetrain, rotating the tires should be done effortlessly
– Too much run time
– ESC not properly matched to motor – exceeding continuous current limit. A larger rated ESC is needed;

ESC – too hot
– ESC not properly matched to motor – exceeding continuous current limit. A larger rated ESC is needed;
– Too much run time

Cells – too hot 
– Drawing too much current from the cells. Increase capacity or C rating. Only use a maximum of 80% of the calculated max discharge rate
– Too long of a run time. Be certain to not dump the packs. 20% capacity should remain.

If all components are running less than 70C or 160F, your setup is sufficient. In many cases the items above may effect not just the motor, esc or battery but all the above. Be certain to correctly diagnose the problem. Or you may use the Forum Boards on the site to get assistance

Many choose to use a Data Logging device to record what the system is using in terms of power. Features of this unit include graphically seeing the amount of current that is being pulling during constant throttle while the boat is near maximum speed. It can also be noted the peak current pulls that happen during acceleration of the boat. Although these are higher and sometimes significantly higher, these peaks only last for a few short seconds. Some logging units will hold these values in memory as a peak current and may miss-lead you when you view that your system is pulling a significant amount more than it actually is.