Before I get to the clearance images, I wanted to report on my findings as far as how these fit into some 29"ers I have around here. Interestingly, anything full suspension has been a no-go for B+ Hard tails have all been no problem.
I have a Big Mama Salsa Cycles frame here and an older Gary Fisher Hi-Fi 29"er. The B+ Trailblazer was no where near close to fitting on the Hi-Fi and the yoke shape of the chain stays on the Big Mama pinched in at just the wrong place for the B+ tires to fit there as well. Now those are both older 29"er FS designs, so something newer may be a different story, but it is my opinion that most older 29"er full suspension designs will not fit the B+ Trailblazer.
Now for the Sawyer clearance images......
|Chain stay clearance|
|Seat stay clearance|
|I probably could shorten the wheel base a bit if I were running geared.|
|TONS of clearance with the old Fox F-29 fork.|
As far as how it affects a 29"er going to the B+ Trailblazer. I can say that anything you may have with a slightly high bottom bracket will have a second personality with B+. It will work really well, and the low pressures you can run, coupled with the crazy good traction will make you smile. The Sawyer seems tailor made for B+, since it has a crazy high BB with 29"er rubber and with the B+ Trailblazer, it reigns that in a bit and the bike is super sweet riding now. I cannot see going back to 29"er hoops on this rig with big tires again due to the better feel and lowered stance that the Trailblazers have brought to the Sawyer.
So, there ya go.