This bike isn’t like most folding bikes. On first glance, it looks similar to the standard 20-inch-wheeled folder seen on the streets and public transportation in every city. Closer inspection reveals some standout features: disc brakes, high-end Schwalbe road tires, and an 18-speed drivetrain with gearing suited to spirited riding.
The ease with which the Formula folds—a trait of the highest importance—reflects well on Dahon’s three decades of folder manufacturing experience. Within a few attempts I had the Formula folded up in under a minute. A small magnetic clasp keeps the bike closed when carrying it, and when closed, it supports itself upright. High marks all around, particularly for the simple and sturdy metal folding pedals.
Dahon designed the Formula for riders “with tougher commutes that demand speed, portability and endurance.” Claiming to fit riders from 4-foot-8 to 6-foot-4, the handlebar and seat height adjust easily with quick-release levers. I found the handlebar height adjustment particularly useful—slide it up for comfort and a heads-up position for short trips, drop it down for more speed and leverage on longer rides. The frame has mounting points for a rack and fenders, and Dahon sells versions of each designed specifically for 20-inch wheels.Tweet
Jamis makes 40(!) different drop-bar bike models, and the Quest may be my favorite. It has mounts for fenders and a rear rack, room for 32mm tires (28mm with fenders) and geometry that is sporty but still comfortable and stable. The drivetrain is all reliable Shimano, mostly from the 105 group, matched up to a Ritchey cockpit and wheels. All proven stuff.
Jeff Jones is something of a mad genius, putting his impassioned theories about the ultimate bike ride into practice with fantastically swooping custom built frames. We’ve been fans of his iconic Titanium Spaceframe mountain bike since riding one for our sister publication, Dirt Rag, six years ago. But as with most geniuses who are drawn to bicycles, Jones believes in sharing his discoveries as widely as possible, so he’s expanded his business beyond custom frames (for which there is a lengthy waiting list) and into factory-produced versions.
This “ATB” bike is so called because it’s intended for all terrain: city, path and mountain. It’s based on Jones’ steel Diamond frame, which started life as a mountain bike. However, with some parts-swapping, this “mountain” bike makes a good commuter or comfy long-distance touring bike as well, with far fewer compromises than your average knobby-tired steed trying to change its stripes. Jones is fond of saying that he only makes one bike—a “high-performance non-suspended bicycle”—that can be used for a variety of riding styles.
What’s the secret to this chameleon nature? It’s in the geometry. Jones frames have a more relaxed seat tube angle and shorter chainstays, putting the rider’s weight further back over the rear wheel. The bottom bracket is settled low between the wheels to add stability. Combined with the Jones Loop H-Bar, which places your hands at a relaxed angle, the resulting position is fairly upright, yet efficient in pedaling and confident in handling rough terrain. Add to that the frame’s huge tire clearance, and you have a bike that can attack just about any situation or riding surface.
Our model was built with the steel Jones Unicrown fork, which has a 135mm hub spacing (wider than the normal 100mm); this stiffens up the front end, particularly useful for loading front panniers. (It also means that you could fit a “fat” front rim and tire, up to 26×4.7, for off-road adventures.) The bike came with 29×2.35 Schwalbe Big Apple tires—Jones is a believer, along with Schwalbe, that bigger-volume tires are actually more efficient on the road due to less rolling resistance, as well as being safer and more comfortable. Tubus racks and Planet Bike fenders round out the build. Jones also sent a set of Ortlieb front and rear panniers and trunk bag, and a frame bag made by Revelate Designs, to provide plenty of options for bikepacking or touring.
A group of Bicycle Times staffers took turns riding the Jones in a variety of ways. (Another benefit of the geometry is that one available size easily accommodates a fairly wide range of heights.)Tweet