Charlie Cunningham, the engineer who built the first welded-aluminum mountain bike frame and helped launch mountain biking on the slopes of Mount Tamalpais, died Monday, June 2, in San Anselmo. He was 77.
Cunningham moved to Mill Valley with his family in the 1960s, a teenager from Washington, D.C., arriving just as local cyclists were beginning to take clunky road bikes onto the fire roads and trails of Mt. Tamalpais. He would spend the next five decades reimagining what a bicycle could be.
His wife of 38 years, Jacquie Phelan, told the Marin Independent Journal that Cunningham never saw cycling as a sport. "He didn't care about the thing as a sport at all," Phelan said. "For him it was using a bike for transportation."
That conviction took root on a mountain in Silverton, Colorado, where Cunningham had a realization that cars were damaging the planet. He came home and devoted himself to building a better alternative.
Starting in 1977, Cunningham hand-built bikes in his Fairfax garage using lightweight welded aluminum, a material no one else had tried for off-road frames. His first weighed 24.5 pounds. Over his lifetime he produced exactly 188 custom machines, each fitted to a single rider.
In 1982, Cunningham co-founded Wilderness Trail Bikes in Mill Valley with Steve Potts and Mark Slate. WTB became one of the first mountain bike component companies in the world. Cunningham and Potts left the company in 2002.
His innovations helped define early mountain biking and influenced the sport for decades: roller-cam brakes, custom wide hubs, grease-guard bearings, and the Ground Control tire, named by Phelan, a three-time national mountain bike champion in her own right. The couple were inducted together into the Mountain Bike Hall of Fame in 1988. Cunningham's 1979 aluminum prototype sits on permanent display at the Marin Museum of Bicycling in Fairfax.
Robert Duncan, a Fairfax friend and neighbor, remembered watching Cunningham work in what he called a "magical, funky garage." Duncan told the Marin IJ that Cunningham "really walked it like he talked it … setting a standard of integrity, quality and innovation."
In 2015, while testing a bike for Phelan on Bolinas-Fairfax Road, Cunningham crashed. He broke eight bones and suffered a catastrophic brain bleed that left him unable to ride. Phelan cared for him for several years before he moved to an assisted living community in San Anselmo, where he died from complications of that injury.
Phelan's oral history, which chronicles her life with Cunningham and the early mountain biking scene, is archived at the Mill Valley Public Library.
Community calendar
- The Marin Museum of Bicycling in Fairfax houses Cunningham's prototype bike and the Mountain Bike Hall of Fame. A celebration of life has been announced but details have not been confirmed; check the museum's website for updates.
