Here comes the heavy duty bicycle. I made it in cycles.
Most of the objects have a subdivision modifier, meaning you can check the amount depending on your computer, especially for the 3d view window; some computers may hang! This is a high poly stuff.
However, rendering is relatively smooth, especially when I consider my 2GB RAM computer and renders it at 1min 30s.
<li>The frame acts as the main parent of all the objects.</li>
<li>The rims are the parents for each wheel, so, remember to always select it when rotating the specific wheel.</li>
<li>Saddle is the parent of its components.</li>
<li>The steering is the parent of the front wheel and other related objects.</li>