Hi John,
For the AB, do you fly out OEI wings level or with favourable bank ?
For minimum drag (no aileron or roll spoiler deflection) at VMCA, then you would need 5 degrees bank.
The problem with AB normal Law is that you can't "feel" when you have any aileron deflection and the only clue is the position of the Beta Target.
In the sim, with V2>VMCA (often by 10 kts or more), less accurate flying can result in level wings climb out with no clue to the amount of aileron deflection applied. SOPs require us to engage the AP early on to reduce the work load and rudder deflection is then controlled automatically. The aircraft will gradually centre the Beta Target resulting a few degrees of bank, often masked by heading changes.
Fast magazine issue 20
"If an engine fails, the triangle at the top of the PFD horizon will divide (see Figure 2). The lower resulting trapezoid changes to blue and will move out in a similar sense to a conventional slip ball, indicating pilot rudder demand in exactly the same way. However, the function is significantly different from the ball in that the centering of the trapezoid (Beta Target) will provide maximum performance with minimum drag.
If no rudder action is taken to centre the Beta Target, like a conventional aircraft, roll will occur towards the dead engine. However, unlike a conventional aircraft, with stick free (no sidestick roll input), the flight control laws will detect the roll and apply aileron and spoiler to stop the roll. The rate of roll will depend on the severity of the thrust loss. In the worst case, the roll will stabilise between 7-9 degrees bank angle, leading to a slow heading drift of about 0.5 degree per second, without any sidestick roll input or rudder input."