|A Surly Krampus with a MegaRack and kid seat. Looks like fun. Images in this post are from Xtracycle.|
The new Xtracycle bolt-on looks to be an improved and more capable design, called the MegaRack. It is designed to be considerably more beefy and stable than the old Freeradical, with versions for multiple tire/wheel sizes, including 29+. For me, this is great news, as in the past few years, I've discovered that 29-inch wheels are more compatible with my height and preferred fit of a bike, and the larger diameter wheels excel for much of how I ride.
Functional though it may be, the Xtracycle Edgerunner never appealed much to me, with its 20-inch rear wheel. I understand that designing a cargo bike around a smaller diameter wheel lowers the center of gravity and makes for a stronger wheel, but small wheels are not ideal for the rough surfaces where I like to go, and make for a more jarring ride elsewhere. I've nearly maxed out the clearance on my Big Dummy with 26" x 2.3" tires, so the possibility of going much bigger has me cogitating. As a matter of fact, with a set of 29+ wheels, the new MegaRack would make an unsuspended 29er like my Monocog 29er quite a viable supersized cargo and passenger machine. It's hard to say when or if I'll get my hands on a MegaRack, but it appears to be more than worthy of consideration.
|CAD images of the MegaRack design. Via Xtracycle.|
|A MegaRack on a folding bike. For this, 20-inch wheels make sense. Via Xtracycle.|
|Ross showing the new, more stout chainstay bridge connector. Welcome indeed. Via Xtracycle.|