After 8 months of testing all three wheel sizes
here's what I found; The 650B steered a little quicker vs 29er, but it lacked the traction and roll
over of a 29er. On the climbs the 650B climbed just like my 26x2.2. Both sizes climbed and descended
good but the 29er just worked better than both. The two sizes
27.5" and 26" are very close in size. IMO it does not make sense to invest in a 27.5(650B) design. You
can practically get the 650B diameter by simply changing your tires from 2.0" to 2.2", and its a lot cheaper.
If you've been thinking about changing wheels I'd skip the 26er along with the 650B and make the jump to the 29er.
2009 Medium Titus Racer X 29er
-3" Rear Travel Fox RP23 6.5 x 1.50"
-2006 Lefty Max w/09 PBR
Cartridge Limited to 120mm
-Stans Arch Rims, Lefty SI Front Hub / DT 240 Rear Hub
-Tires:(29er)Kenda Nevegal 2.2F/Maxxis CrossMark 2.1R
-Cannondale SL Crank 2 x 9 w/custom BB
-XTR Cassette, Rear Shifter, Rear Derailleur, Front Derailleur, and Pauls Thumbie Front Shifter
-Hayes Master Cylinder / Hayes F/R Calipers / Hope 203F, 140R Rotors
-Cannondale OS Stem 110/Profile Solar Carbon Bar
-Seat WTB Rocket/Tompson Elite
30.9 post
-Shimano XT pedals
-BB Height 13"
-26.4 Lbs. Complete with Pedals