PPRuNe Forums - APU brushless starter motor

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Danial9874

20th Jul 2020 15:16

APU brushless starter motor

Hi
APU are using brush starter motor
why we cannot change the motor to brushless type ?

dixi188

20th Jul 2020 20:49

If it ain't broke, don't fix it!
The DC brushless motors I have dealt with were small low power things.
I suspect that a Brushless Starter Motor may be a tall order as it has to be very high torque.
What is the problem with brushes anyway? The maintenance requirements are quite low.
The only failure I ever had with an APU starter was when the mounting flange failed and the motor fell off.

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