Just got my first MTB yesterday, a 2014 Silverback Sola 3, and the guys at Linden Cycles kindly added a BRI3 computer. Because of the immense excitement I rushed out and forgot to ask for the manuals. The interwebs and google came to rescue and I found them online. I've posted the links in case anyone else finds themselves in the same position . Installation Manual http://img.echowell....stallation2.pdf Configuration Manual http://img.echowell....RI-Setting3.pdf Reading through the configuration guide, I realised that the wheel circumference setting needed to be adjusted, the default is for a 27 Inch (700x32c). The manual did not seem to have the circumference values for my 29er. Back to the interwebs where I found this handy guide on wheel size math http://www.bikecalc....wheel_size_math My tires are 2.1 inch on 700c/29er rims, looked it up and found the circumference of 2289.22, and adjusted the computer. If I've done something obviously wrong please yell.