If a Roly Poly is 27.79mm in diameter, and if a Jack Brown is 33.333mm in diameter, that's a difference of 5.54mm or so. With a head tube angle of 73 degrees, that means you'll be reducing your trail by 1.69mm
I think that should make the decision obvious. One reason? Bah! More like 1.69 reasons OK, tongue in cheek episode concludes. On May 27, 12:16 pm, Steve Palincsar <palin...@his.com> wrote: > On Thu, 2010-05-27 at 11:59 -0700, Anne Paulson wrote: > > When I got my Roadeo, it had Jack Browns on it. I thought, hmm, this > > is a gofast bike, I'll mount 28mm tires instead. So I bought some Roly > > Polys. I just took off the Jack Browns (used maybe 100 miles) and was > > about to put on the Roly Polys, but I thought I'd weigh the two tires > > first. The Jack Brown I weighed was 4 and 5.5 grams heavier than the > > two Roly Polys. > > > Wait just one gol durned minute! Why am I changing tires to save four > > or five grams? The tubes won't save any weight, 'cause they're the > > same tubes. Is the rolling resistance any different? Should I just put > > the Jack Browns back on? > > Can you think of one reason why you shouldn't? -- 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-bu...@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.
