Callistus Valerius said:Quoted message said:I have last year's 29er version of that fork,
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What is the advantage of a 29er? It would seem to me it would put your
center of gravity higher, and be a big disadvantage in mountain biking. I'm
a complete newbie to mtb, if this seems like a stupid question.
Your center of gravity is determined by the placement of the bottom
bracket, saddle, and handlebars. None of those are necessarily raised
by going to larger wheels. One of the claimed advantages of 29ers is
that your center of gravity ends up lower relative to the axles, which
is supposed to help stability.
Whatever the cause, I do find the bike to be more stable. Increased low
speed stability and a lower stall speed sold me on it, since I usually
crash due to losing control at low speed while picking my way through
sections that intimidate me. Since then, I've found that the stability
difference is even more dramatic at higher speeds.
The larger tire volume allows you to run lower pressures without getting
pinch flats, which makes for better grip and provides a measure of extra
suspension. It's also possible to ride over somewhat bigger obstacles
without lifting the front wheel.
Disadvantages: 29ers tend to have shorter travel forks. The front end is
tall despite that, which makes it difficult to design frames for shorter
riders. The smaller frame sizes can end up looking pretty odd. I find
that my 29er is a little harder to ride through switchbacks, although
there may be other factors than wheel size at play there. At a given
price point, you'll typically get better components and lighter wheels
on a 26" wheeled bike.
Quoted message said:Is it for tall guys?
Not necessarily, although I understand that taller riders benefit more.
I'm 5'6 and ride the smallest Gary Fisher 29er hardtail frame. Some of
the boutique builders (of which there are many in the 29er world) go a
bit smaller.
Wheel size is becoming a contentious issue in mountain biking, and there
are plenty who disagree with me.
More than you ever wanted to know: <http://www.mtbr.com/29er/>