I think you mean get a section of 26.8 tubing. Yes, I suggested a custom based on his favorite seat post.
On Friday, November 27, 2020 at 5:59:48 PM UTC-5 Matthew Williams wrote: > I would not recommend milling the inside of the seat tube. You'd be > weakening the structure of the frame and the milling would be difficult and > more expense than it's worth. > > Instead, find a local fabricator and request the following: > > 1: Get a section of 27.2mm tubing and cut it to length (300mm or > thereabouts) > 2: Cut the tube from the seatpost you want > 3: TIG-weld the 27.2mm tubing to the base of your seatpost > > > > On Nov 27, 2020, at 2:45 PM, Mark Roland <absolut...@gmail.com> wrote: > > Well, as I said above, I'm not an expert in suspension posts, so I haven't > seen the testing labeling one or another brand far superior, one that many > people love, and therefore rendering my point into a straw man. In 50 years > of riding, with clubs, for transportation, being involved in many ways, > I've never ridden with someone who purposely rode with a suspension post. > Caveat--I am not a mountain biker so don't have a lot of experience in that > world, though I understand there the whole bike is usually suspended. The > ones I've come across in the wild were on hybrids, cheap mtbs, (now extinct > ?) "comfort" bikes, and tandem stoker posts. > I guess my point was more if you really want a certain Riv model, you can > probably find a way to get a seat post that will work for you. Maybe you > could get .2mm milled off the post and .2 reamed out of the seat tube. Or > just be thankful the Hillborne takes a 27.2 and call it a blessed day. > > On Friday, November 27, 2020 at 1:58:42 PM UTC-5 Nathan F wrote: > >> We're basically just bickering at this point but I can't help myself... >> the suspension posts posted on eBay above are all awful compared to the >> market leading suspension posts from Cane Creek and the like. They're not >> even really the same thing from a functionality perspective. Linking to >> them is a total straw man. >> >> Cane Creek's design has been around for 20+ years, and is a well proven, >> tunable, and serviceable technology. Lots and lots of people love them and >> I suspect that's what OP was hoping to use. >> On Friday, 27 November 2020 at 09:52:58 UTC-8 bfd...@gmail.com wrote: >> >>> My bad, the Op did ask about suspension posts. Someone else asked about >>> dropper post. Still, it does make you wonder what Grant is thinking going >>> to a 26.8mm seatpost on his frames?! >>> >>> Good Luck! >>> >>> On Friday, November 27, 2020 at 8:53:01 AM UTC-8 Brewster Fong wrote: >>> >>>> The question I have is are these "suspension" post that you refer to >>>> the same a dropper post that he OP is seeking?! The dropper post is the >>>> latest thing for gravel/mtbs as it allows you to adjust the saddle height >>>> with the press of a button. These posts aren't cheap a they start at like >>>> $200 and go up! I think Sram's wireless post is $800+ >>>> >>>> Good Luck! >>>> >>>> On Thursday, November 26, 2020 at 3:59:09 PM UTC-8 Mark Roland wrote: >>>> >>>>> Here are a bunch of 26.8 suspension posts on eBay >>>>> <https://www.ebay.com/sch/i.html?_from=R40&_nkw=26.8+seat+post&_sacat=0&rt=nc&Seatpost%2520Type=Suspension%2520Seatpost&_dcat=58101> >>>>> right now. Should last a lifetime of Rivs! >>>>> >>>>> >>>>> >>>>> On Thursday, November 26, 2020 at 6:48:44 PM UTC-5 Mark Roland wrote: >>>>> >>>>>> 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 <nathan...@gmail.com> >>>>>>> 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 rbw-owners-bun...@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/rbw-owners-bunch/c13b7bac-7756-4cf9-9732-8fc9dacbdbefn%40googlegroups.com > > <https://groups.google.com/d/msgid/rbw-owners-bunch/c13b7bac-7756-4cf9-9732-8fc9dacbdbefn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. 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