The new Double Switchback breakaway tandem’s name refers to the two wheel sizes that it’ll work with – 650B mountain or standard 700c road wheels.Bottom coupler is a new oversized version of their standard coupler. Availability is TBD, some time later this year. This is still a prototype. Rear tire clearance will improve a bit when running 650B mountain bike tires. Tom Ritchey’s been riding one for a while and has been wanting to bring it out.They were also showing some prototype and new parts at their booth, covered in this post. We first heard about Ritchey’s new Road Logic when they put up a few handbuilt-by-Tom-Ritchey items for auction. The new bike uses the same triple butted Ritchey Logic II chromoly tubes as the Swiss Cross and P29 but with road geometry. Internal headset cups allow for a 1-1/8″ steerer in a super thin 1″-equivalent headtube.Comes as a frameset with headset and paint matched Pro carbon fork. Price should be inline with the $1,299 cross bike and they’re looking at a July delivery.