Thread drift:
Re redundant electrical power on single engine helicopters.
We had a 205A-1 doing magnetometer surveys.
The system required lots of power.
Initially this was provided by a generator mounted on the hard points on the port/left side. it was as big as a home freezer providing lots of drag and also weighed a lot reducing payload.
After a bit of head scratching and In a move of pure genius they yanked that generator off. They then removed the rotor brake installing a transmission driven generator in its place. Worked very well.