Generators used in high altitudes

CJW8 wrote:

I am a licensed pilot and have worked on small engines all my life. When a pilot leans the mixture as he gains altitude, he only gains a small but noticeable amount of power because he is getting the mixture right for the altitude. That power will still be less than he would have at a lower altitude with the proper mixture.

I didn't mean to say that one could get MSL power at altitude by leaning the mixture. I do feel like the amount of power gained with leaning the mixture is more than small. Taking off from Denver in a loaded 172 with the mixture full rich will leave you sweating bullets as the runway end approaches and you're still on the ground.