Since it was my bike that started this discussion I'm going to chime in again:
I think that whether you like the look of the double tubes or not is strictly personal preference and I would never argue that. Apparently Rivendell had structural failure issues with some of their earlier big bikes and they opted to start using two top tubes. They could have gone other ways and used heavier tubes or perhaps larger or ovalized tubing on the down tube. I believe that it's hard get enough lateral stiffness on these big bikes with their long tubes on the main triangle. I have an early '90's vintage Santana tandem and the main bottom tube is ovalized for one reason, lateral stiffness. While I have never jumped off three foot ledges with my DTT Atlantis I do weigh almost 220 lbs in touring clothes and I have been on rides where my bike, camping gear, food and water weighed over 80 lbs. The section of the Western Express across Nevada has 17 mountain passes and on every one of those descents I was very happy to have that second top tube. The angled or curved second tubes on the Rivs serve to strengthen the bike and they do look cool if that is your preference but they would compromise use in my experience. My frame pump fits nicely in between the parallel tubes and a normal triangular frame bag fits below. These are just my opinions. Your milage my vary. Don J Boise, Idaho/Don't move here On Tuesday, May 25, 2021 at 12:08:35 PM UTC-6 bjmi...@gmail.com wrote: > I have a 59cm Atlantis with double top tube. I like DTT better if they're > curved the way mine is rather than running parallel to the actual top tube. > A very small part of me doesn't like how the curved tube gives the bike a > decidedly "beach cruiser" look, because the bike is a billion times more > versatile and sporty than that. > > I'm pretty sure the second top tube on my bike is not structurally > necessary, but overall I'm all about the look. > > Ben in Omaha > > On Tuesday, May 25, 2021 at 12:42:06 PM UTC-5 Patrick Moore wrote: > >> Oh, and even on 3d world roadsters they only came on heavy duty models; >> most do not have them. >> >> On Tue, May 25, 2021 at 11:41 AM Patrick Moore <bert...@gmail.com> wrote: >> >>> One more remark about double top tubes. They are or were common on 3d >>> world utility bikes made of cheap steel and cheaply brazed, but even loaded >>> touring bikes back from the steel era (or aluminum era, for that matter) >>> never needed double top tubes in big sizes back in the pre-modern days. If >>> one were going to jump a 64 cm frame off 3' drops, then yes, perhaps >>> structurally needed, but I doubt they serve a structural purpose for >>> Rivendells. >>> >>> If one likes the looks, that's fine. >>> >>> On Tue, May 25, 2021 at 2:16 AM Matthew P <matthewpe...@gmail.com> >>> wrote: >>> >>>> I like the double top tubes, even on not-super-large bikes that may or >>>> may not need them, like Jason's Bombadil (love it). >>>> I also like the Hunq diagatube, even if it would require 2 frame bags >>>> instead of 1 (but could be a good thing - separate the water bladder(s) >>>> from the rest). >>>> -Matthew >>>> San Diego / Kumeyaay land >>>> >>>> On Monday, May 24, 2021 at 2:39:40 PM UTC-7 Patrick Moore wrote: >>>> >>>>> That was Eric Floden. I just voiced my appreciation. >>>>> >>>>> On Mon, May 24, 2021 at 8:16 AM Donald Jewell <jewe...@gmail.com> >>>>> wrote: >>>>> >>>>>> Hi Patrick, >>>>>> Thanks for finding my pinkbike listing for my 64cm Renovelo Atlantis >>>>>> and posting it here. I've had Rivendells since 2006 but just stumbled >>>>>> upon >>>>>> this Riv owners group. Over the years I've built an AHH, both orange and >>>>>> green Quickbeams, an Yves Gomez and this Atlantis for myself. I also >>>>>> built >>>>>> a Betty Foy for my daughter, a AHH and a Cheviot for one girlfriend and >>>>>> a >>>>>> Clem for another. >>>>>> >>>>>> I hear you on the double top tube look of the big Rivs. They're >>>>>> definitely not as elegant as a single top tube but I wonder what the >>>>>> buyers >>>>>> of big single tube bikes that came apart would say about that issue. Oh >>>>>> and >>>>>> thanks for the tip on the gen hub wiring. >>>>>> Don Jewell >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Sunday, May 16, 2021 at 5:01:31 PM UTC-6 Patrick Moore wrote: >>>>>> >>>>>>> I can't say that I like double top tubes even on big frames, but >>>>>>> this is still a very pretty bike -- tho' the owner could spiff up the >>>>>>> dynamo wiring along the fork leg. >>>>>>> >>>>>>> Patrick "60 X 56 c-c, single top tube" Moore >>>>>>> >>>>>>> On Sun, May 16, 2021 at 3:51 PM Eric Floden <eric....@gmail.com> >>>>>>> wrote: >>>>>>> >>>>>>>> No connection with seller in Boise >>>>>>>> >>>>>>>> https://www.pinkbike.com/buysell/3054321/ >>>>>>>> >>>>>>>> [image: image.png] >>>>>>>> >>>>>>>> "Rivendell Renovelo Atlantis" >>>>>>>> >>>>>>>> -- >>>>>>>> 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/CAOGTYJD0XQThWv8uuCGVEkuJJXFKyy8e-Tbyedd1DtgpTre%3D2w%40mail.gmail.com >>>>>>>> >>>>>>>> <https://groups.google.com/d/msgid/rbw-owners-bunch/CAOGTYJD0XQThWv8uuCGVEkuJJXFKyy8e-Tbyedd1DtgpTre%3D2w%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>>>>>> . >>>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> >>>>>>> >>>>>>> ----------------------------------------------------------------------- >>>>>>> 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/5012f905-7fd3-4574-89ce-e7bfb7945c0an%40googlegroups.com >>>>>> >>>>>> <https://groups.google.com/d/msgid/rbw-owners-bunch/5012f905-7fd3-4574-89ce-e7bfb7945c0an%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>> . >>>>>> >>>>> >>>>> >>>>> -- >>>>> >>>>> ----------------------------------------------------------------------- >>>>> 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/7c7ad501-54c1-4193-81e7-0f8161e643c0n%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/rbw-owners-bunch/7c7ad501-54c1-4193-81e7-0f8161e643c0n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> >>> >>> -- >>> >>> ----------------------------------------------------------------------- >>> Patrick Moore >>> Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum >>> >>> >> >> -- >> >> ----------------------------------------------------------------------- >> 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. 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