1975 motobecane Grand jubilee, and a rescued 1984 Raliegh Marathon, that my daughter is using at college
Trek insight 6i
OK, so I got one of these as a gift and it looks simple enough. I get it installed, but I got a question for those much more knowlegable then myself. In the instructions it lists 700c and 650 tires, along with some custom settings that the cryptic instructions I have don't explain just what they are. My bike has 27X1,1/8 so I contacted a trek dealer and they told me to use the 700c setting. I know there is a minimal difference in the diameter between a 700c and a 27" tire, so do you think that was a sufficiant answer, or is there someone familiar with this device that knows how to set one exactly for a 27"