Fair enough, it's only freaky and inconsistent by modern standards I suppose. That bit about the tubeset diameters makes a lot of sense, thanks. Anyone have a list of what tube specs have been used and when? That would be interesting to see.
It's way easy to find 27.2 as that's the most common current road standard. It's not hard to find 26.8 per se, there just isn't much variety. Not that you can't be happy with a Nitto post for the rest of your life, of course, but that lugged one is neat and 27.2 only. Eric, Velo Orange had Kalloy make them 300mm long one-bolt posts in a range of weird sizes for $25 a pop. 25.0/4, 26.2/4/8, 27.0/2. Fantastic resource for older bikes. On Monday, November 11, 2019 at 1:48:29 PM UTC-6, Eric Norris wrote: > > SheldonBrown.com has an entire page devoted to seatpost sizes: > > https://www.sheldonbrown.com/seatpost-sizes.html > > If you have an older bike, things get interesting. I have a ‘72 Cinelli > (26.2mm) and a ‘71 Motobecane (26.4mm) that both require seatposts that can > be somewhat difficult to find. > > --Eric N > > On Nov 11, 2019, at 11:31 AM, Laing Conley <lco...@brph.com <javascript:>> > wrote: > > Seat post size is the inner diameter of top of the seat tube (usually > single butted - thin part at the top) - change the tube = change the seat > post. When the Sam got 0.2 thicker tubes (same outer diameter = same lugs), > the seat post got smaller -> 27.2 minus 2 x 0.2 = 26.8. > > > Laing Conley > > > -----Original Message----- > From: rbw-owne...@googlegroups.com <javascript:> < > rbw-owne...@googlegroups.com <javascript:>> On Behalf Of Joe Bernard > Sent: Monday, November 11, 2019 1:53 PM > To: RBW Owners Bunch <rbw-owne...@googlegroups.com <javascript:>> > Subject: [RBW] Anyone elsed notice Rivendell's freaky, inconsistent > seatpost standards? > > I believe it's a matter of what seatlug is used for a particular model. > 27.2 was on the MUSA frames, 29.8 was the socket-style lug originally used > on all Clems and now only the big ones, 26.8 is the lug currently used on > the smaller Clems and all MIT fully-lugged bikes. > > -- > 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-owne...@googlegroups.com <javascript:>. > To view this discussion on the web visit > https://urldefense.proofpoint.com/v2/url?u=https-3A__groups.google.com_d_msgid_rbw-2Downers-2Dbunch_ab572e71-2D3b22-2D4f3f-2Dae42-2De0bfbe0955b1-2540googlegroups.com&d=DwIFaQ&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=fbpz-LhLhQnqxV9ePfEuoQ&m=zdOnZkL4-imZ2uJ9jNdVckdW6eHIum54VBbtRYEfZX4&s=IC6ULtQUHCeB8oelCIAYrk-8wx3ClbewZBhUNk-l_gQ&e= > . > > -- > 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-owne...@googlegroups.com <javascript:>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rbw-owners-bunch/BN8PR14MB2883A8FFFDCFA7AF8A6D0680C3740%40BN8PR14MB2883.namprd14.prod.outlook.com > . > > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/066bfca7-21a9-40be-a503-8b52db482b71%40googlegroups.com.
