[Partial QUOTE=HillRider;14801666]I assume you mean the second cog is significantly larger than the smallest.
Cog sets (freewheels or cassettes) can be "close ratio"
Cogs sets can also be "wide ratio" whereA close ratio range.[/QUOTE]
Adding that it is not unusual to see touring cogsets where the steps are somewhere between close and wide ratio and includes one big mother of a cog that is really a granny gear for those steep hills. Examples might be a 12-34 or a 14-36 cogset. Some even have the word MEGA on the exposed edge of the biggest gear. Most modern touring RD's can handle such cogsets fairly well. For my use, I put one of those pie-pan spoke protectors behind the cogset to protect the wheel from damage.