Originally Posted by
JDriver
Depending on the ac............. Generally speaking, most acft will be above Vmcg when 80 kts is achieved. Therefore it is safe to take your hands off the tiller.
With crosswinds, the nosewheel will be used until the acft reaches a speed in which the flight controls are able to maintain runway centerline.
Not true. On a 747 its between 114 and 132kts depending on T.O. power setting. Granted, that considers a critical engine failure which would be farthest from centerline, but I would suspect that on those hi-powered, big twins, Vmcg could be a pretty high number. You would have to talk to a 757/767/777 driver to confirm that for you.
Ailerons dont come into play for Vmcg. Anything more than 2 degrees (on a Boeing) effectively nullifies your T.O. data.