Charles Beard and John P. Roche give marvellous (opposing) opinons on this issue. Beard's writings can be found online in full (see first link below) but, as Roche is still alive he still is trying to make money off his ideas. Find "The Founding Fathers: A Reform Caucus in Action" in a library or at a book store for more info. (In other words, decide for yourself).
http://www.vindicatingthefounders.com/library/index.asp?document=71
http://www.dushkin.com/text-data/catalog/0073102164.mhtml?SECTION=TOC -Political scientist John P. Roche asserts that the Founding Fathers were not only revolutionaries but also superb democratic politicians who created a Constitution that supported the needs of the nation and at the same time was acceptable to the people.