Two riders, one rhythm. Experience cycling in perfect sync.
Prototype #1 Twin Cruisers - 2014
(Schwinn Bikes)
First Functional side-by-side flexible twin bicycle.
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Prototype #2 Twin City Bikes - 2015
(Gran Royale Step-through)
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Initial prototypes relied on commercially available bicycles
Mass-produced bicycles are often heavier and less precise. A lighter, finely crafted frame means better performance, so we chose to switch to custom-built frames.
Twin City Bikes
Our custom frames are constructed using TIG-welded TIG (Tungsten Inert Gas) welding is a precise welding process that uses a tungsten electrode to create an electric arc that melts the metal and forms a weld. A shielding gas, typically argon, protects the weld area from atmospheric contamination. Filler metal is added to strengthen the joint. 4130 chromium-molybdenum (Cr-Mo) alloy steel tubing.
Cr-Mo is a strong alloy often used in race cars and homebuilt aircraft.
A lightweight design is attained through the use of thin-wall, butted Butting means varying the wall thickness along the tube length to optimize strength where it’s most needed while reducing weight elsewhere. Double-Butted tubes are thicker at both ends to resist localized stresses from welding while the thinner wall center saves weight. and shaped tubes specifically engineered for bicycle frame construction.
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