Downloaded the file erj_grab.zip (Nick Botamer's Model) with the three ERJ-145 aircraft it contains.. But I don't know whether I have too much fuel or the aircraft is not loaded correctly weight and balance wise, because at 140-160 Knots when I rotate it is bouncing up and down. Also acceleration seems sluggish.Is my assumption correct?Any ideas?Thanks!Barry

Not sure.Try posting here and you can ask Bill directly :)http://www.fsnordic.net/discussion/index.php?board=1Hope this helps!!

First, make sure you have the version 2.1 update (if using FS2002). Second, make sure you have it trimed for takeoff (somewhere in the green zone on the panel). Acceleration should be smooth and crisp, not a rocket mind you, but not a pig either. Head over to the ERJ forum for more help, since, well, Bill and I check that one much more often.