Ramper@iah, you wrote:
"The EMB-145 requires the pilots to push forward as soon as the aircraft is off the ground. Since the main gear is aft of the CG, excessive back-pressure is needed to lift the nose. The back-pressure must be relieved and the column pushed forward to prevent the pitch from increasing after lift-off."
GCE here (gross conceptional error)
Once the a/c is off the ground, it rotates about its center of gravity. The mains ARE aft of the COG; otherwise the a/c will do a tailstand sitting at the gate. Back pressure causes the rotation, forward pressure "AFTER ROTaTION Vr" is required:
Due to the fact that the a/c must be trimmed in the takeoff config to account for an engine loss "Slightly" Before (read at) V1. Without and engine loss, for any transport a/c, nose down trim will be required.
Most of those erjs use about 7-8 units of trim at takeoff, which accounts for the engine out scenario. The pilots may not know it, but that's why it tends to pitch up after rotation, along, of course, with the fact that the velocity of the a/c is increasing rapidly after rotation - which requires nose down trim to maintain a constant deck angle.
But that's another topic...