though I'm late to the party...here is my input ... I would pick the Atlantis hands down over the Bombadill. I just like the flatter top tube and classic lines. Without disc brakes on the Bomba, I think is not as usable off road as the construction and design intent would dictate. To me it's just a beefier Atlantis for those "larger" ( taller and wider) riders.
Down the road I intend to upgrade from my Hillborne to an Atlantis, most likely in custom color. On May 19, 10:35 am, CycloFiend <cyclofi...@earthlink.net> wrote: > on 5/19/10 9:30 AM, William at tapebu...@gmail.com wrote: > > > > > > > Jim > > > I think some of the compounding confusion comes from the Riv site. > > There, they claim a 100mm dirt drop stem has an effective horizontal > > extension of 82mm. I think that should simply read 'extension' with > > 'horizontal' removed. That's what my 100mm dirt drop stem measures > > to, and only then does the trig make any sense. Every vendor that > > sells both the dirt drop and the Technomic call them +35deg and > > -17deg, respectively. Take a glance at the dirt drop stem installed > > on the bike and it is obvious that the rise on the bike is >>35 > > degrees from horizontal. It's about 54 degrees (35 degrees in stem > > rise plus the complement to the headtube angle which in this case is > > 19 degrees). > > > So, by my reckoning, the 100mm Dirt Drop stem does in fact have 82mm > > of extension and ~86.5mm of reach. That I've measured > > By that same approach, the 80mm Dirt Drop stem has 65mm of extension > > and ~69.4mm of reach. That I have not measured > > > Using that fact, it turns out that a 80mm dirt drop stem which has 35 > > degrees of rise in the stem and ~65mm of extension, is within a mm or > > two of a 7cm Technomic Deluxe in reach. > > Thanks for that salient and comprehensive explanation. > > I certainly got it all mucked up interchanging "reach" and "extension". I > appreciate the clarification. > > - J > > -- > Jim Edgar > cyclofi...@earthlink.net > > Cyclofiend Bicycle Photo Galleries -http://www.cyclofiend.com > Current Classics - Cross Bikes > Singlespeed - Working Bikes > > The Gallery needs your photos! Send 'em in - Here's > how:http://www.cyclofiend.com/guidelines > > "She edged in to get a better look at the bike, how it was made, the > intricacy of its brakes and shifters pulling her straight in. Beauty." > -- William Gibson, "Virtual Light" > > -- > 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 > athttp://groups.google.com/group/rbw-owners-bunch?hl=en.- Hide quoted text - > > - Show quoted text - -- 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.
