The canti posts are the issue. It would certainly be possible to move the posts to the 650b position and use brakes with enough adjustment to accommodate either 650b wheels or 700c.
But, the costs of moving the posts and dealing with painting the frame and fork afterwards would be significant. As to whether it would significantly change the ride of the bike, hard to say. The bottom bracket would sit a fraction lower. 650b rims are predominantly disc only nowadays. There are still rim brake options available, but personally I think a new bike would be a better investment. Something like the Black Mountain Cycles Monster Cross Disc (which I believe is still in prototype phase). Keep the Atlantis the way G intended. It's good that way. IanA -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
