Frank Krygowski wrote:

No, bigger wheels do not necessarily mean
more ground clearance. That's a function of
frame design.

Bigger wheels are much better. Try a 630 bike
after your 622 and feel the difference.
Or likewise try a 584 after the 622 and feel it
getting even worse.

Again, how big exactly are the 29 wheels? I ask
because in the MTB bike world aren't both 26
and 27.5 actually 584 or 650B?

--
underground experts united
http://user.it.uu.se/~embe8573