[Speedwaypj]

Thx for the input all. The video was prior to my fabricating a shroud. Yes it does take up a lot of space. It (mechanical fan only) holds pretty good (under 210F) for about 25 minutes...then I need that garage fan to keep it from getting too high. Underway it should be ok.
I don't think putting a puller fan (i.e. VIII) AND keeping the mechanical fan with shroud would work correctly...I would think the electric fan (while not running) would itself create a restriction, whereas the mechanical could not pull enough and result in kicking on the electric fan...
Again, thanks all for the input!