[zbrown]

How big of motor and rpm?

How many charge tubes on the cores?

 

[zbrown]

However, the GREATEST delta in temp drop, is the first few inches of the hot tube. How many do you get on a vertical va horizontal core? Vertical wins every time, if you have the space.

Truth. You get the flow area and slower air speed

Horizontal of the same overall size you get longer charge tubes but the flow area is dick and the air speed is crazy