This bike of the week is another handmade beauty from our friends in Boulder, Colorado, a Mosaic RT-1 Disc. This bike was conceived after a long year of heavy rain and stacked training schedules in the Bay Area. The idea was to create a bike that that would offer a smooth ride, stand the test of elements (and El Niño), brake well in the wet, have enough clearance for some bigger tires, all while having the right weight, stiffness, and geometry to be considered a competitive road racing bike.
For the right geometry a Enve RD 1.25" was spec'd up front. Mosaic's massive headtube helps to ensure that things stay nice and stiff while sprinting, as well as a nice background for their beautiful headbadge.
The frame is finished in brushed Ti with the logo treatment done in Mosaic's trademark sandblasted technique. Though subtle, the finshwork further shows how good the craftsmanship is at Mosaic.
Classic bend Deda Newton bars and a Deda Superleggera stem mate nicely to the Di2 shifters wrapped in Fizik tape, while further down the Enve and Chris King ensure fast, predictable, and reliable steering and smooth forward momentum.
The client sped'd the rear dropout with a 142x12 spacing and a thru axle for nice strong rear triangle since he's a heaver rider at 82kg. The bike's braking is handled by Paul Components Klamper mechanical disc brakes, that while slightly bulkier than some of the hydraulic offerings on the market, allowed the use of traditional Di2 levers that were much more appealing esthetically to the client.
Three short rides into ownership the bike's owner, Palicci, rode it 146 miles over pavement, dirt, gravel, and singletrack to a 13th place finish at this year's BWR. If that's not proof of concept we're not sure what is.