Comment by gameshot911

Your comment is really interesting, but I didn't fully understand.

What do you mean by "metals don't actually withstand temperature"? As in the raw metal would melt were it not for the cooling vanes?

'If powered down, the engine would destroy itself' - from what? Overheating?

The lower power setting on shutdown does what? Spin it at a low RPM so it doesn't decrease in temp too quickly?