Yes. Tubing diameter and thickness generally dictates seat post size. In that sense, the sizing is part of its functionality. A 26.8 seat post size is not exactly unusual, and before 27.2 became dominant, was fairly common. I have several bikes, other than my recent Rivs, that use this size.
If you want a cheap but good one, you can get a Kalloy Uno <https://www.modernbike.com/kalloy-uno-602-seatpost-26.8-x-350mm-silver>. If you want a middle range, you can get one from Dajia Cycleworks(note most sizes currently out of stock). If you want blingy dingy doo, you can get a Nitto <https://www.rivbike.com/collections/seat-posts/products/nitto-s83-seat-post-26-8-or-27-2> . There are many vintage 26.8 seat posts available on eBay, including Campy <https://www.ebay.com/itm/Campagnolo-Nuovo-Record-Seatpost-26-8-1980-s/174534355105?hash=item28a30ee8a1:g:jRIAAOSwpVxfvWOq> (though these tend to often be short) . Or use the seat post included with all Rivendell framesets. Before we pile on too heavy, I don't see it as a dying, esoteric size at this point. The OP wants to run a suspension post due to medical issues. Running a suspension post, which are of questionable value in my experience (but obviously not for the OP), is what is unusual, not the seat post size. I think there are probably ways (though perhaps pricey) to have your cake and eat it too. For that you might need to go custom, as I pointed out above. Since Thudbuster makes specialty seat posts while Riv makes standard bicycles, it would make more sense to complain to TB and try to convince them there is a market for 26.8 suspension seat posts. On Thursday, November 26, 2020 at 2:51:41 PM UTC-5 Patrick Moore wrote: > Isn't seatpost diameter dictated by tubing choice? That said, I agree that > 26.8 is less desirable given supply than 27.2. > > On Thu, Nov 26, 2020 at 10:19 AM Nathan F <[email protected]> wrote: > >> I was also disappointed to learn my Hillborne used a 26.8. What a >> frustrating choice, since seat post diameter is one of the few things in >> the bicycling industry that is *almost* standard nowadays (ignoring the >> sizes in use on modern MTB, plus all the proprietary crap). Then here comes >> Riv using something else! And instead of picking a size with some sort of >> tangible benefit, they picked a seemingly random one used infrequently 3+ >> decades ago. It's a bit eye-rolling, really, for all of Riv's talk over the >> years bemoaning the fickleness of the industry they then spec the >> strangest, most hard to find post diameters (30.0 on a custom?? Really? I'd >> return it!). >> >> Here's a controversial statement: being the only frame manufacturer using >> a dead/rare post size is almost no different than using a proprietary seat >> post. >> > > > -- > > ----------------------------------------------------------------------- > Patrick Moore > Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum > > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/3eac1209-c793-4bfd-a2a2-87399fc79064n%40googlegroups.com.
