747FOCAL
VR is calculated exactly as John_Tullamarine explained.(FAR25.107 e)
Your statement
Vr is calculated at much higher rates than is necessary to meet FAR 25, relates to the use of improved climb/overspeed but even then the relationship between V1 /VR /V2 remains the same.
Mutt <img src="smile.gif" border="0">
(J_T, did I get it right this time??? <img src="smile.gif" border="0">
[ 12 January 2002: Message edited by: mutt ]</p>