I wonder how many people actually set up a triple or, for that a matter, a double. And by “set up”, I mean install. Many people don’t under derailers to begin with and they get confused about triples because they think there is something extra about them that needs adjustment. All of the (supposed) problems that come with triples can, and do, occur with doubles as I stated above.

If the number of people that I work with at my co-op is any indication, most people don’t understand derailers. 90% of them grab a screwdriver when they have shifting problems.

Perhaps “lying” is too strong a word but a lot of the supposed problems with triples are more apocryphal than actual. Many of the people who post statements against triples do so without ever having used one.

Yes, there MUST be a difference. And that difference is a lack of understanding of how a derailer works. I’ve seen it thousands of times, literally. And I’m not using “literally” figuratively. I’ve worked on 15,000 to 20,000 bikes in the last 10 years. Most of them have some kind of derailer problem that is easily fix but often exacerbated because people don’t understand the derailer. 90% of all the problems with derailers...front or rear...that I’ve seen can be fixed with a simple cable adjustment but are usually made far worse by grabbing that screwdriver.

No. It is up to you to explain what the difference is between a double and a triple if you think there is one. Both work on the same principle, work with the same cable, and are set up the same way. There is nothing different in setting up one or the other as I’ve pointed out above.