Originally Posted by bf109
How will reduced take off thrust affect V1 and Vr
thanks
You'll find this discussed in quite a few older threads - do a 'search' using terms like 'derate' and most will pop up. Here's a couple to get you started...
http://www.pprune.org/forums/showthread.php?t=222816
http://www.pprune.org/forums/showthread.php?t=206040