tag:blogger.com,1999:blog-1094176709529713758.post5209202128875834077..comments2024-02-12T19:55:20.018-08:00Comments on 26InchSlicks: Philosophical and Technical Pump Track Hardware EvalUnknownnoreply@blogger.comBlogger3125tag:blogger.com,1999:blog-1094176709529713758.post-48246248409011847782011-05-27T11:59:23.645-07:002011-05-27T11:59:23.645-07:00I don't believe in geometry (or even mathemati...I don't believe in geometry (or even mathematics), but those frames look different from each other.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1094176709529713758.post-16092700605432789642011-05-26T23:06:45.338-07:002011-05-26T23:06:45.338-07:00John, yeah, great observations. I've been thi...John, yeah, great observations. I've been thinking along the same lines about where a given bike "naturally" places your center of gravity based on where your feet and hands land and then how comfortably the same bike allows you to move your COG around.<br /><br />The narrow vs wide handlebars is another interesting one - it's cool to have two bikes with bar widths so dramatically opposite, they both seem fast in their own way. I'm not even close to having that one figured out yet.Pat Shttps://www.blogger.com/profile/05348722701872187949noreply@blogger.comtag:blogger.com,1999:blog-1094176709529713758.post-60660796417473824392011-05-26T10:04:07.657-07:002011-05-26T10:04:07.657-07:00One detail that your incredibly nerdy sketches do ...One detail that your incredibly nerdy sketches do not reveal, is the new bar config on the P1. (The new bars do not rise as much and are wider -- I"m thinking they're about 800mm -- f'ing wide). We were both shocked at how much the new bar config changed the P1 -- I especially noticed that the front of the bike was more behaved, specifically: the front wheel stayed on the track instead of "bouncing" off a tick on the corners.<br /><br />Here's a point: I think geometry matters a lot, but so, apparently, does the configuration of the components in how they position your body. Since there's really no butt-connection on pump bikes, you're left with feet and hand connections only. How well the bike lets you shift your weight around and where that weight ends up relative to the bike's "center" matters. <br /><br />It's fun to watch different people on the same bike: the 'cuda tends to encourage what Glen calls "balling up," where the rider gets more compact, more squished down into the bike. Whereas the P1 tends to encourage a more "open" and "taller" ride -- I was watching Jake for a few mintues before I left last night on the P1: no balling up there. I wish I would've stuck around to see him on the 'cuda.<br /><br />The P1 is a bigger bike: longer wheelbase, much longer effective TT, but I think the change in bar configuration may be a hint at another piece of the what-makes-a-perfect-pump bike enigma.John Spearehttps://www.blogger.com/profile/07187638368645707099noreply@blogger.com