When I chose the Cannondale Cujo 1, I decided to mount 29" wheels in case the 27.5+ tires were disappointing. All in all, 27.5+ tires are not that bad, they were great on sand for example. But I realized that I liked the 2.1" tires (which were on my old GT Avalanche) better. And with the failure of the rear rim, it was only a matter of time.
Components for the new 29x2.1 wheels:
I put them on the Cujo 1 pretty easily. Of course I had to move a cassette to the new rear wheel and then adjust the brake calipers and the rear derailleur.
I also replaced the wheel reflectors because they were too short for the new rims (the distance between the spokes is bigger now).
It looks like the new 29x2.1 wheels have a slightly larger outside diameter than the 27x2.8 and even the 27x3.0 wheels.
Weight changes (complete wheels):
Old front 27.5x3.0 (with "SuperLite" tube): 2410g
New front 29x2.1: 2050g (-360g)
New front 29x2.1: 2735g (-580g)
The first thing I noticed was how loud and noisy the freehub is! The OEM Cujo 1 is almost silent. But I think a loud freewheel is good for safety (for pedestrians and other riders).
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