Someone near me is advertising a 14" pedestal grinder. It is similar
in construction (but not brand) to this grinder.

http://tinyurl.com/y8k9mjl

In other words, it is huge, 5 to 7.5 HP depending on wheel width.

While the size of this grinder fascinates me, I cannot help but wonder
how can people even get the full power out of it.

Also do you think that they are much more dangerous than regular
1/2-1HP grinders.

thanks