Somewhere I read (and I thought it was from BobL - so I would have tended to respect the opinion) that a second powerhead didn't increase speed... or something? I can't remember now (and maybe it wasn't BobL). I would assume you would double the power meaning, what? More aggressive chain? Guessing I won't be getting double speed or anything.
I have an absolute MONSTER of a white oak I need to mill soon which may end up being too big for my 60" bar. If that's the case, should I invest in one of these? Anyone who's used them? Thoughts?