I believe that the Roaduno is going to be 120mm spaced, just like the Quickbeam/Simple One and Frank Jones Sr. (I'm going from memory from following the updates too, though). The idea behind the hanger is more that it could accommodate a chain tensioner than a derailleur. For whatever reason, Rivendell is currently enamored with a multiple-chainring/single-cog approach to achieving multi-speed drivetrains.
Nonetheless, there are still some 120mm cassette hubs out there, that take truncated gear clusters. I seem to recall Grand Bois and the new Suntour group. There are also several internal geared hubs that are 120mm OLN. Ignoring any ride quality differences, which we of course can't answer (but Will did address in the recent email), I think the differences between the Roaduno and other Riv single-speeds goes like this: Size range: Quickbeam came in the relatively small 2cm size increments that Riv used in the earlier years. The classic-but-surprisingly-rare-for-production-bikes way of ensuring that there was a frame to fit everyone properly. Simple One was a geometic clone of the Quickbeam, but wasn't offered in the really huge or really small sizes. Frank was ONLY produced in small to medium sizes, because it was intended specifically for the Japanese market, where people tend to have a shorter stature. Roaduno follows Rivs newer "expanded" sizing method, which started with the Sam Hillbourne, I believe: sloped top tubes allow more standover AND taller stack heights, and longer top tubes allow for reach-back bars and/or shorter stems to dial in the fit for more riders. Fewer frame sizes (and fewer fork steerer lengths) is cheaper and avoids having to buy mimimum quantities of niche sizes that take forever to sell. Lugs: All three are fully-lugged. Frank had the extra-fancy ones, which were previously only used on customs. Fork Crown / Tire Clearance: First QBs had the (narrowest) RC02 crown, but that wasn't really the tight spot anyway. The chainstays were. With wheels toward the back of the dropout, you could fit maybe 44mm with fenders. (Officially less) Later QBs and SOs had a wider crown. I don't know about Frank, but suspect it had slightly more tire clearance simply because available tire technology and sizes had progressed so much further by then. Roaduno is getting the unique Appaloosa crown which COULD take a 55mm or so but, because it's being used with caliper brakes, is limited to 50mm or so. Brakes: QB and SO had cantis. Frank and Roaduno use caliper (or center-pull). Roaduno (maybe Frank too?) need long-reach. Chainstays; Roaduno has longer stays, though that appears to have been significantly tempered over the evolution of the prototypes. Dropouts: QB and SO had water-jet cut plate steel dropouts with the slot cut at a slope, so that the brake pads would hit the rim no matter where in the slot the wheel was clamped. It was intended to see frequent manual gear changes by moving the chain to adjacent cog and/or chainring, either of which would change the effecive chainstay length. It could accommodate an 8 tooth total range. Frank had similar sloped slots, but used a fancy investment cast dropout. Roaduno has an investment-cast dropout too, but the slot is horizontal and, of course, has the hanger. Braze-ons: Haven't studied this closely, but it should be easy enough to figure out. The first QBs were pretty spare. Later ones at least got mounts for a campee rack on the fork. I >think< Roaduno will have a full range for more utility with racks. But they talk about it being lightweight and NOT intended for touring loads, too. Kick Sta The only difference between the QB and SO (other than country of origin for tubing and manufacture) was that SO had a kickstand mounting plate. Roaduno will likely have one too. On Sunday, February 4, 2024 at 7:24:12 AM UTC-7 Arthur Mayfield wrote: > If my FJ had a derailleur hanger, I’d be constantly tempted to turn it > into a 1X or 2X 5 or 6. 120mm rear spacing and the difficulties of mounting > a derailleur under track forks keeps me in line. As I recall, the Roaduno > has wider rear end to go with the hanger-equipped dropouts, so there are a > zillion hubs that will fit. I ride it as a single, rather than fixed, and > am content. The one change I’d make to a re-imagined FJ would be to add a > kickstand mount. I’ve never been comfortable with clamp-on kickstands, > always afraid they’d slip or I’d over tighten and damage the chain stays. > > On Saturday, February 3, 2024 at 9:24:09 AM UTC-5 rmro...@gmail.com wrote: > >> Well damn it. Looked this up & now I really want a silver Roaduno. Look >> like the same dropouts but with the hanger? >> [image: image0.jpeg] >> >> Sent from my iPhone >> >> On Feb 3, 2024, at 9:04 AM, Arthur Mayfield <ajmay...@gmail.com> wrote: >> >> Not what else is out there, but what should be—Rivendell should bring >> back the Frank Jones. 700c, sidepull brakes, 120mm rear hub, fully lugged, >> fits up to 42mm tires (I have 32s with PDW fenders). I have three Rivs (FJ, >> Platy, caliper Sam), but my FJ is what I think of when I want to ride >> simply, or simply want to ride. Without a doubt, an *elegant* bicycle. >> >> >> On Saturday, February 3, 2024 at 5:15:38 AM UTC-5 Eric Daume wrote: >> >>> The Surly Steamroller can take a 38mm tire, but no fender. >>> >>> The sadly out of production Cross Check could do a 38mm with a fender. >>> >>> Eric >>> >>> On Fri, Feb 2, 2024 at 5:16 PM Edwin W <dween...@hotmail.com> wrote: >>> >>>> I like single speed bikes, many like single speed bikes. The >>>> simplicity, the possibility of fixed gear, it is the epitome of biking for >>>> me, I think. >>>> >>>> I like the idea of the roaduno. So far it looks like it will have >>>> 700c/622 wheel size, long reach side pull brakes. Rear facing drop outs. >>>> Those are the main factors to think about, because stem length, handlebar >>>> and lever type, fenders or not, dynamo or not, are flexible on most bikes. >>>> >>>> What is the competition, and what are they offering? >>>> Crust Lightning bolt single speed. 650b wheels with anti posts. >>>> >>>> BMC Monstercross. 700c wheels and cantilever posts. But that has 135mm >>>> rear spacing, so not exactly built for single speed. >>>> >>>> What else is out there that can take a 38mm (or so) tire with a fender? >>>> >>>> Edwin >>>> >>>> -- >>>> 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/ef477e87-6e73-4984-9b85-d3c5946f0d79n%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/rbw-owners-bunch/ef477e87-6e73-4984-9b85-d3c5946f0d79n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> -- >> 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/5bc23a1a-b417-4a8d-ae51-10231d18dc61n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/rbw-owners-bunch/5bc23a1a-b417-4a8d-ae51-10231d18dc61n%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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