Thanks BOAC (Bend Over Again Christine ?). Ensuring that you don't suddenly trundle across the grass due to a massive imbalance of thrust would save some embarrassment.
I would never have guessed the real reason so I appreciate you solving the mystery. My money was on establishing a speed induced airflow through the compressor before chucking loads of fuel into the mix however t/o power always seems to be selected around 25 kts which scuppered that arguement.
