The good ol'school chopper used to be one of my first non-commercial projects in 3d. I tried to put some major attention to model that knucklehead engine, exhaust system and the chassis. It took about 2 weeks to create that one. And to tell the truth, while modeling it i was still unaware of many things. For example i did not know that it is more comfy to use spline and nurbs modeling techinques for some occasions, instead of bare polygonal modeling e.t.c After sime time and research i returned back on this model to refine some parts and deliver it the way you see it here.