Dustin: thanks for the reply. My own experience is simply that the additional 2 1/2 inches of the 622 wheels (compared to the 559s; both the 622s and the 559s were shod with Big Apples in the 60 mm size) is very, very noticeable; and that -- this from a history of road building -- that the English government found, in the late 18ths century, that increasing the diameter of wheels, compared to increasing their width by a similar percent, was more effective in reducing road damage by a factor of 10.
To be more concrete: the 559 60 mm Big Apples at 20 psi front, 25 rear, were no better than the 622 BAs at 40 front, 45 rear -- pavement pressures. This not only about cush over bumps like washboard, but also about flotation over sand; much of the offroad riding near my house is old riverbed. So, I wonder what would happen with 584s ... On Thu, Apr 2, 2009 at 9:36 PM, Dustin Sharp <dsh...@runbox.com> wrote: > Scientific, no. Anecdotally, it’s been my experience that when it comes > to sand, overall tire width is more important than 584 v. 622. I put some > Schwalbe Racing Ralph’s 29x2.4s on and really noticed a difference in > flotation v. 26x2.0s AND 29x2.0s. > > Did a 30-mile singletrack ride this weekend involving lots of riding in > sand and all of the guys were joking around saying that once we got to a > particular 3-mile sand wash I was going to float over it since I was on a > 29er. Most of us, 29er or not, spend a good stretch of that wash hoofing it. > > http://dirttreaders.com/phpBB3/viewtopic.php?f=20&t=1913&start=0 > > When not riding sand washes, I still prefer 29ers in the rough and rocky > stuff. It just rolls better. I too looked at the Bombadil geometry today and > was bummed that 622 wheels don’t start until the size up from what I’d ride. > > Dustin > > > > On 4/2/09 7:51 PM, "PATRICK MOORE" <bertin...@gmail.com> wrote: > > Is there any truly scientific comparison between the effect of 584 compared > to 622 off road, particularly in sand? > > Or, at least, strongly held opinions? Peevish bitching? Whining? > > Thanks. > > > > > > > > -- Patrick Moore Albuquerque, NM Professional Resumes. Contact resumespecialt...@gmail.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en -~----------~----~----~----~------~----~------~--~---
