[MENTION=345109]corrado33[/MENTION], do you have a weight limit for this bike? I built myself a bike with front and rear drum brakes as an experiment, and I didn't like it because it was so heavy. IGH also adds weight. Mine had derailleurs. Weight and cost are two compelling reasons most bikes have derailleurs. Same for caliper rim brakes, though disc brakes are becoming cost effective and not terribly heavy.