Minimum Angle on Conical Fermenter Bottom Cone

[zinger084]

I searched and didn't see anything on this topic, so I thought a thread would be nice.

I recently order a plastic inductor tank from the tank depot. I ordered the ACE brand that has a 53deg angle bottom cone. The Norwesco tanks have a 60deg bottom.

First question: Is the 53deg going to be large enough to have the yeast settle at the bottom and not on the sides?

Secondly, what is the minimum angle for conical fermenter bottoms?

 

[beerthirty]

I think the standard is 60* but as to the minimum, that would depend on how slick the surface is.