Bernie Mikkelsen building frames since 1974 inventor of the "Pro Sizer" sizing bicycle, and the "Pro Fit" sizer   Area Served   Northern California Located at the Grand Marina in Alameda Ten miles East of San Francisco as the crow flies I have been building the "new" sloping top tube frame geomrtry for well over a decade I built my own tandem frame jig from a turn of the century S.F.Chronicle cast iron type setting table What Makes Me Different We make bicycle frames using steel only   We blend Reynolds, Columbus, True Temper, Dedacciai, and Tange tubing to tune the ride I created several types of sizers for duplicating any size, or geometry bicycle frame for riding tests Unlike other sizing devices mine has a front wheel so that it can actually be ridden outside Stationary sizing devices provide no handling feedback Why guess? Test ride along the bay with a view of San Francisco All you need is a few test rides with some readjustments to find your best position on the bicycle There is nothing else like it Steel bicyle frames Any configuration Any size Custom geometry every time Why compromise? Custom paint and powdercoating Road Mountain Tandem (Road or Mountain) Triathalon Time Trial Cyclocross Single Speed Track Custom Forks TIG welded, Fillet Brazed, or Classic Lugged Frame Repairs Braze Ons Reproductions (dimensional reproductions of any existing frame) Build Kits Available With Frames   An e mail from a customer:        Berrnie,         A couple saturdays a ago, I did 107 miles and 5,000 vertical with my brother on an organized ride in Fresno.     Thanks to the frame rebuild you did to my bike, I was much more comfortable.    Thanks also for the referal to your friend at Pleasant Hill Cyclery (Eric).    They were able to order a  seatpost with 1" setback on it, which enables me to flatten out a bit more over the bike.   I am finally at a point where I am perfectly comfortable on the bike - like wearing comfortable but supportive athletic shoes.    Keep up the good work!       Dan Bergmann Dan's Bicycle