If the desired location for this is a car, then a few years of life that requires half disassembly of a motor isn’t going to work.
If the desired location for this is a car, then a few years of life that requires half disassembly of a motor isn’t going to work.
That does not sound worse than replacing the spark plugs in a Subaru engine.
The slip rings are not in the middle of the motor, they're on the butt. I know car makers don't always try to make things serviceable, but it'll be hard to make it hard to replace. Probably the only issue will be needing to remove other parts first to get to it, if anything.