Here's my Expedition Fat Bike. I built the frame from scratch, cutting up and re-using old chromoly mtn bike parts. Total investment into the bike is $350 and a little time cutting and welding. Will be stripping and painting soon. The reason I built this is because IMO no one makes a frame with ideal geometry for an expedition/exploration bike. I'm convinced that a short wheelbase, short chainstay's, and high bottom bracket make the ideal bike for maximum off road capability. Mainstream bike geometry is designed for going fast and racing type riding, not going slow and clearing obstacles which fat bikes are very well suited for.
My testing thus far has confirmed my speculation and this bike rides awesome. It has a 14" high BB, 42.5" wheelbase, 16.5" chainstay's, and fits 5" fat tires. This thing just rolls over everything. The combination of high BB, short WB and CS allows me to ride through areas I couldn't on my last bike. My last standard geometry fatbike was always hitting pedals and getting hung up when trying to ride technical off-trail terrain. My next frame build will be a full suspension with the same geo that also takes 5" wide tires.
I think eventually we will see a new breed of fat bike designed for off road exploring/adventuring with geometry like this, once people start using fat bikes to their full potential off trail and realize the limitations of current geo trends.
My testing thus far has confirmed my speculation and this bike rides awesome. It has a 14" high BB, 42.5" wheelbase, 16.5" chainstay's, and fits 5" fat tires. This thing just rolls over everything. The combination of high BB, short WB and CS allows me to ride through areas I couldn't on my last bike. My last standard geometry fatbike was always hitting pedals and getting hung up when trying to ride technical off-trail terrain. My next frame build will be a full suspension with the same geo that also takes 5" wide tires.
I think eventually we will see a new breed of fat bike designed for off road exploring/adventuring with geometry like this, once people start using fat bikes to their full potential off trail and realize the limitations of current geo trends.
![rfat1.jpg](http://i1175.photobucket.com/albums/r621/n8-r/rfat1.jpg)
![rfat3.jpg](http://i1175.photobucket.com/albums/r621/n8-r/rfat3.jpg)