I have access to a CFD simulation software and would like to simulate the air flow around the front end and windshield of our loved bike and see how flow looks like. Anyone know where I could find a 3D model of the front end? Anyone can model the front of his bike?

It could be interesting, even if troublesome, since the geometry is pretty complex. What solver and how many processors are you using?

I have Autodesk CFD, formerly CFDesign intalled on a dual XEON HP Z800 workstation. Even a roughly modeled shape +/- 3mm would give a pretty good idea. Problem is I have absolutely no surface modeling experience.

I think that unless you model a significant portion of the bike, no useful results can be drawn. In any case, you need a 3d digitizer, eg http://www.ghost3d.com/gt_scribe-it.htm