On Sun, Sep 10, 2023 at 7:06 AM Guy LeVan <levan...@gmail.com> wrote:
Hi Bill, Great looking Rom! I am in the middle of designing my 3X1 drivetrain on either a Rambouillet frame (132.5 rear spacing), or on my Atlantis or Clem frame, and thinking about using a 44/32/22 old Specialized MTB crankset, with a Paul WORD hub in the back, and either a Melvin or a cheap derailleur on the derailleur hanger for chain tension. I’m in the Salt Lake City area, so lots of hilly terrain, and I am 62 years old. Thinking about a 18, 20 or 22 tooth cog in back. I’m a competent bike mechanic, but this is a first dive into this configuration for me. Some of my preliminary questions for you: 1) will a 22 tooth small front chainring function with a single cog of equal teeth? 2) Is 5he Paul WORD the correct single speed hub to use? 3) if it turns out that I would prefer a 3 X 2 cogs in back config, is that doable? This will be an interesting journey, and thanks in advance. Guy LeVan Sandy, UT On Friday, September 8, 2023 at 11:08:45 AM UTC-6 Bill Lindsay wrote: > I added a couple photos: > > Drivetrain: https://www.flickr.com/photos/45758191@N04/53173631968/ > Bike: https://www.flickr.com/photos/45758191@N04/53173144361/ > > Bill Lindsay > El Cerrito, CA > > On Thursday, September 7, 2023 at 9:28:14 AM UTC-7 EGNolan wrote: > >> Anxiously Awaiting photos for APPROVAL. >> >> ; ) >> >> Eric >> Indpls >> >> On Thursday, September 7, 2023 at 11:55:58 AM UTC-4 Bill Lindsay wrote: >> >>> Three random events triggered a rebuild of my Romulus drivetrain: >>> >>> 1. Blue Lug instagram photo of Grant with his 3x1 Platypus >>> 2. Joe Bernard desperately wanting to get rid of a Paul Melvin >>> 3. George coming through with an 18T single White Industries Freewheel >>> when I offered to raid your parts box >>> >>> Because of the above, I decided to remove: >>> >>> Campy Centaur crankset with 39/24 rings >>> White Dos Eno 16/18 FW >>> FSA front derailleur >>> Deore XT springless rear derailleur >>> >>> What went on was/is: >>> >>> Ritchey/Sugino 172.5 cranks with 46/36/24 rings >>> 18T White Industries FW >>> Shimano Deerhead front derailleur >>> Paul Melvin >>> >>> So now it's a three-speed road bike, with gears of 70, 55 and 37 inches. >>> The Paul Melvin documentation says it'll take up 20 teeth, but it seems >>> fine here at 22 teeth. I'll add photos to the album. This is really close >>> to what I would probably do on a Roaduno. >>> >>> Bill Lindsay >>> El Cerrito, CA >>> >>> On Saturday, August 19, 2023 at 10:06:29 AM UTC-7 Bill Lindsay wrote: >>> >>>> I pounced on a local 59cm Romulus. That bike has long been on my list >>>> of "I'd ride THAT" bikes, but it wasn't a terribly high priority. This >>>> opportunity presented itself and got to work. >>>> >>>> Cutting to the chase: here's the album >>>> https://www.flickr.com/photos/45758191@N04/albums/72177720310604809 >>>> >>>> The bike was a mostly original Riv complete Rom build. It had a >>>> mustache bar cockpit, and Silver bar con shifters, but otherwise was >>>> pretty >>>> much stock. It's got nicks and scratches beau-sage but was in >>>> mechanically >>>> fine shape. >>>> >>>> This is going to be a versatile road platform upon which I could >>>> implement a number of different build concepts. The one that had been >>>> sticking in my mind, though, was a front-derailleur only road two speed. >>>> The forthcoming Roaduno is allegedly going to have both a rear der hanger >>>> as well as the braze on bits to do a FRONT shifter. Some listers vocally >>>> proclaimed that "silly", but it seems pretty sensible to me. I had not >>>> executed a build of that kind, and this was my shot. >>>> >>>> From "inventory" I pulled together a nice two speed road bike kit: >>>> >>>> The wheelset was "inherited" from my Crust Florida Man., which lives in >>>> Michigan. When I built that bike, I used stuff I had on-hand, including a >>>> pair of HED Belgium rims. Those are almost impossible to get anymore, so >>>> I >>>> built a new set of wheels around cheaper and wider rims to bring that >>>> wheelset back to California. I just grabbed them off the hook. I put a >>>> pair of used Compass Steilacoom 700x38 knobbier on there (with latex >>>> tubes!) and grabbed a 16/18 DOS ENO freewheel. The rear hub is Surly >>>> Ultra >>>> New. The front is a Phil Track hub. I tossed on a pair of Shimano >>>> "CLICKR" SPD pedals. >>>> >>>> The drivetrain centers on a Campy Centaur 172.5mm square taper cranks >>>> Origin8 sealed BB (110.5) >>>> blue chain guard >>>> 39T tripleizer ring >>>> 24T ring from the original Rom build >>>> >>>> The front derailleur is a heavily modified FSA that I had from earlier >>>> experiments. The shift lever is a Shimano Ultegra "triple-color" model >>>> from he 1990s with an awesome return spring inside to make it really light >>>> action. The tensioner is a modified XT rapid rise. There's no return >>>> spring inside, from a desmodromic exploration. I was able to adjust one >>>> limit screw so it hits the 16T cog. The other limit screw was too short, >>>> so I replaced it with a long socket head M4x0.7mm bolt. I can turn that >>>> one with my fingers. Dialed out the RD "falls" to the 18T cog. Dialed in >>>> I can push it to the 16. >>>> >>>> The cockpit includes other parts box items. I got the Salsa stem >>>> really cheap only to find it's like 25.8mm in clamp diameter. I was >>>> waiting for a working-class build to force it to 26.0mm. I spread it wide >>>> and got a 420mm Nitto Noodle in there. I used the stock brake levers and >>>> some orange Newbaums. I kept the original Nitto 65 seat post and >>>> installed >>>> the Brooks Pro saddle reclaimed from "Shawn's Hetchins". >>>> >>>> Now it's ready to ride (after the shellac dries). Maybe this will >>>> inspire some of the Roaduno builds later this year. Enjoy >>>> >>>> Bill Lindsay >>>> El Cerrito, CA >>>> >>>> -- 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/97e2f01e-5226-48f9-b403-2157a3bfb8ccn%40googlegroups.com.
