As far as I can tell if you rode an old 56cm Atlantis you would now be on a MIT 53cm Atlantis and you would have essentially the same reach (a mm or 2 less) and 5mm more stack and a cm more crotch clearance on the MIT 53cm.
-Dave J On 4/10/18, lconley <lcon...@brph.com> wrote: > I also need to check seat post size. If it is not 27.2 then I may need to > look elsewhere if it doesn't have a long TT because I cannot use the lugged > > setback seatpost (I am of the stumpy legs and chimp arms variety). I honed > the ID of my 27.0 ID seat tube Bombadil to about 27.1 so I could use the > lugged seatpost. > > I seem to remember many years ago, when the most important aspect of a > saddle was it's weight, putting my elbow up to the seat tip and seeing > where the end of the stem was to determine stem length - ideal was the > longest finger reached the bars. These days - in order to be comfortable, > it is way beyond that - not trying to fit on a racing bike anymore. > > Laing > Cocoa, FL > > > On Tuesday, April 10, 2018 at 12:58:51 PM UTC-4, tc wrote: > >> Garth, yep, I know stack and reach. To my weird brain though, if I know >> PBH, and I also know the goofy >> "[top-of-seatpost-at-comfy-height]__to__[center-of-bar-flats-at-comfy-stem-height]" >> >> measurement on a bike that I know fits me well, then I'm an instant away >> from seeing whether another bike can be configured to fit me well ... >> whether I have stork legs and t-rex arms, or stumpy legs and chimp arms. >> I >> don't think you can say the same for PBH-only bike sizing. >> >> If you take that latter goofy measurement on a bike that fits you well, >> and cut a piece of string to that length, then 'overlay' it on a bike >> you're thinking about getting, you'd be able to see in an instant whether >> >> you can get a stem with the right reach (and height) -- plus a saddle with >> >> enough adjustment in the rails for proper setback -- for the new bike to >> fit you just as well as your existing bike. Assuming your PBH is also >> accommodated. >> >> I know, weird, and likely overkill if you're in the middle of the PBH >> range. But there are many who are in between PBH ranges, and/or don't have >> >> 'normal' upper/lower torso ratios. >> >> Tom >> >> >> On Tuesday, April 10, 2018 at 11:52:17 AM UTC-4, Garth wrote: >>> >>> Tom, The standard measurement these days by more and more frame makers >>> is called the reach, along with the stack. Riv has recently added these >>> to >>> their geometry chart and can reveal how deceptive TT alone can be, let >>> alone any 1 certain measurement by itself. >>> >>> All of the numbers are meant as a guide of course, as every body is >>> unique, some more/less flexible and feel best in this or that >>> position...not what someone else tells them is best for them. >>> >>> There are many articles explaining it, here's one ... >>> https://velovoice.blogspot.com/2015/05/bike-sizing-stack-and-reach.html >>> >>> > > -- > You received this message because you are subscribed to a topic in the > Google Groups "RBW Owners Bunch" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/rbw-owners-bunch/jVTc77tiWYw/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > rbw-owners-bunch+unsubscr...@googlegroups.com. > To post to this group, send email to firstname.lastname@example.org. > Visit this group at https://groups.google.com/group/rbw-owners-bunch. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to email@example.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.