This online resource library can answer most of the questions you might have. The library offers manuals, photos, videos and other useful information to help solve your issues and is organized by topic for quick referencing.
Simply select a category from the list on the lower right column. You can see the subcategories if you click on the arrows to the right of your category.
I am currently riding a New World Tourist with an 8-speed cassette with 9-speed spacing. Can I change this to a standard 9-speed cassette?
At the moment, the answer is no. Sorry. The SRAM Spectro 3x7 hub is designed for a seven-speed cassette. We have discovered a way to use eight-speed spacing that bends the rules.
The eight-speed/nine-speed spacing accomplishes two things: 1) get more gears and 2) allows us to use the fancy nine-speed shifters (like Shimano's STI levers). The Spectro 3x7 will not work with nine cogs.
It is understood that SRAM has a 3x9 system in the works, but no delivery date has been set yet. Stay tuned.