I'm one of the lucky few who managed to get one. It will replace a Shimano Deer Head RD on my Ram which needs a drivetrain switch now that it's converted to 650b and my 180 WI cranks are too close to the ground for my comfort (going 170).
When I got to the online store (I think I was there very early), I checked and there were only 10 OM-1's available, I think that's all they sold, but I can't be sure. I'll report when I get it and install it. Max On Saturday, November 8, 2025 at 12:26:20 PM UTC-5 GAJett wrote: > According to Rivendell (Derailer - Rear - Silver OM-1 (reverse action) - 1 > <https://www.rivbike.com/products/derailer-rear-silver-om-1-reverse-action>) > the capacities are listed as: > "Biggest cog it’ll shift to: 36t. With an extension tab it’ll shift to at > least 42t. > Chain wrap (explained on the box): 39t" > > Didn't see anything there about indexed shifting but I do recall seeing > that somewhere. > > GAJett > > On Fri, Nov 7, 2025 at 4:34 PM NYCbikeguy <[email protected]> wrote: > >> Bumping this thread back up: >> >> Did the OM-1 already sell out that quickly??? >> At the $150 sticker price, I didn't think this would sell out that >> quickly, but man I was wrong. >> Looking forward to candid reviews from the lucky ones who get their hands >> on this! >> >> Best, >> IY >> CT/NYC >> >> On Tuesday, September 9, 2025 at 4:12:54 PM UTC-4 Josh C wrote: >> >>> Kyle, I saw that yesterday afternoon. I sent them a message asking when >>> it'll be available, and they said, "Maybe winter 2025??". I don't have any >>> experience with IRD but it looked pretty. Glad it's silver and not huge. >>> >>> On Tuesday, September 9, 2025 at 10:55:33 AM UTC-4 Kyle Mitchell wrote: >>> >>>> Merry Sales was showing off a new front derailleur at the MADE show and >>>> specifically mentioned Rivendell testing them out in their clip with Path >>>> Less Pedaled. >>>> https://www.youtube.com/watch?v=bp19IGyL_HM&t=53s >>>> >>>> On Monday, September 8, 2025 at 6:34:32 AM UTC-7 Josh C wrote: >>>> >>>>> I'm glad that they are making this RD, but honestly, I think a good 2x >>>>> capable FD would be of more use to me. Don't get me wrong, I'm excited >>>>> for >>>>> both, but I find it harder to find good quality (and good-looking) 2x >>>>> FDs. >>>>> I'd have to go back to the archives and see if they are planning for that >>>>> FD to be 3x or 2x. >>>>> >>>>> On Sunday, September 7, 2025 at 10:36:10 PM UTC-4 Steve wrote: >>>>> >>>>>> Shannon, what I experienced by exceeding the capacity of the >>>>>> derailleur was an inability to shift out of the big ring- big cog combo >>>>>> -- >>>>>> the chain was overly taunt; the hub continued to freewheel, no drama >>>>>> resulted Fortunately the derailleur survived the ordeal . ;-). >>>>>> It >>>>>> sounds like you maybe dropped the chain inboard and locked up the rear >>>>>> hub >>>>>> or the cranks?? >>>>>> On Sunday, September 7, 2025 at 10:13:07 PM UTC-4 Shannon Menkveld >>>>>> wrote: >>>>>> >>>>>>> The one you were fortunate not to have, although I was also kinda >>>>>>> joking. >>>>>>> >>>>>>> I've done it, while pedaling pretty hard. Luckily, it was uphill on >>>>>>> a mountain bike, so I wasn't going very fast. >>>>>>> >>>>>>> I still crashed instantaneously. I just didn't get hurt much. >>>>>>> >>>>>>> --Shannon >>>>>>> On Wednesday, September 3, 2025 at 7:57:14 AM UTC-7 Steve wrote: >>>>>>> >>>>>>>> What crash? >>>>>>>> >>>>>>>> On Tuesday, September 2, 2025 at 10:46:09 PM UTC-4 Shannon Menkveld >>>>>>>> wrote: >>>>>>>> >>>>>>>>> How badly were you and the bike hurt in the crash? >>>>>>>>> >>>>>>>>> --Shannon >>>>>>>>> On Monday, September 1, 2025 at 7:56:07 PM UTC-7 Steve wrote: >>>>>>>>> >>>>>>>>>> Shannon, I like your advice. Indeed, now that I think about it, >>>>>>>>>> the current 3x drive train runs a bit slack in the 24 x 11 >>>>>>>>>> combination. I >>>>>>>>>> will confess though to having been "bone headed" enough to once >>>>>>>>>> seize a >>>>>>>>>> derailleur in the big x big position -- which taught me to check >>>>>>>>>> the >>>>>>>>>> chain in that position when setting up a new drivetrain. >>>>>>>>>> >>>>>>>>>> Steve >>>>>>>>>> >>>>>>>>>> On Monday, September 1, 2025 at 9:17:52 PM UTC-4 Shannon Menkveld >>>>>>>>>> wrote: >>>>>>>>>> >>>>>>>>>>> Exceeding chain wrap on a derailleur isn't a big deal. The worst >>>>>>>>>>> that can happen is that you upshift into a too-small cog on the >>>>>>>>>>> granny >>>>>>>>>>> ring, the chain goes slack and makes hella noise, and you shift the >>>>>>>>>>> front >>>>>>>>>>> and feel like a moron. >>>>>>>>>>> >>>>>>>>>>> My 1985 League Fuji is set up 45/42/30 x 14-16-18-20-23-26... >>>>>>>>>>> with a 1980 Suntour Superbe that's spec'd at 23t of chain wrap and >>>>>>>>>>> a 23t >>>>>>>>>>> max cog. Other than the shift up from the granny, which needs to be >>>>>>>>>>> done >>>>>>>>>>> nicely and slowly, (but when was the last time you needed to shift >>>>>>>>>>> up off >>>>>>>>>>> the granny *right fringgin' now!!*,) with the Riv Silver 1 >>>>>>>>>>> shifters on the downtube, it shifts better than I do. >>>>>>>>>>> >>>>>>>>>>> As long as your derailleur can handle it when you boneheadedly >>>>>>>>>>> try to downshift to the bottom cog on the big ring without locking >>>>>>>>>>> up your >>>>>>>>>>> drivetrain and making you crash so fast that time won't have time >>>>>>>>>>> to slow >>>>>>>>>>> down before you hit. (I guess that's possible going the other way, >>>>>>>>>>> if you >>>>>>>>>>> got the chain so slack, under so much pedal force and speed as to >>>>>>>>>>> wrap it >>>>>>>>>>> around the bottom bracket like a fishing reel, but any situation >>>>>>>>>>> where I >>>>>>>>>>> can imagine that happening would be really really weird...) >>>>>>>>>>> >>>>>>>>>>> Tl;dr: I'd Just Do It (tm). It'll almost certainly work, and if >>>>>>>>>>> it doesn't, you'll just hate it and do something different, so no >>>>>>>>>>> harm done. >>>>>>>>>>> >>>>>>>>>>> --Shannon >>>>>>>>>>> >>>>>>>>>>> On Monday, September 1, 2025 at 4:16:06 PM UTC-7 Steve wrote: >>>>>>>>>>> >>>>>>>>>>>> Thanks Eric. Another group member tipped me off to this photo >>>>>>>>>>>> from the article, but I couldn't quite make it out. Looking at it >>>>>>>>>>>> now I >>>>>>>>>>>> think you've deciphered it. If this is the final capacity - and >>>>>>>>>>>> I'm >>>>>>>>>>>> guessing it is if Riv went to the expense of having the boxes >>>>>>>>>>>> printed - the >>>>>>>>>>>> current 3x drivetrain on my Platypus will exceed its specified max >>>>>>>>>>>> chain >>>>>>>>>>>> wrap. I may have to wait for the Sam Hillborne I've been >>>>>>>>>>>> contemplating for >>>>>>>>>>>> my next birthday. If I hear anything different from the inquiry I >>>>>>>>>>>> finally >>>>>>>>>>>> sent Will at RBW, I'll share it here. >>>>>>>>>>>> >>>>>>>>>>>> Steve in AVL. >>>>>>>>>>>> >>>>>>>>>>>> On Monday, September 1, 2025 at 1:46:03 PM UTC-4 Eric wrote: >>>>>>>>>>>> >>>>>>>>>>>>> If you zoom in on this photo from Eben Weiss' Outside article >>>>>>>>>>>>> <https://www.outsideonline.com/outdoor-gear/bikes-and-biking/rivendell-bikes-rear-derailleur/>, >>>>>>>>>>>>> >>>>>>>>>>>>> you might be able to make something out through the jpeg haze. >>>>>>>>>>>>> [image: image.jpeg] >>>>>>>>>>>>> I think I'm reading Biggest cog of 36T (with friction shifter) >>>>>>>>>>>>> and 34T (with index shifter) and a Chain wrap of 39T. The largest >>>>>>>>>>>>> cassette >>>>>>>>>>>>> cog numbers sound about what I'd expect, but I have no point of >>>>>>>>>>>>> reference >>>>>>>>>>>>> for chain wrap. So, I'll let someone else jump in as to whether >>>>>>>>>>>>> that number >>>>>>>>>>>>> makes any sense. >>>>>>>>>>>>> >>>>>>>>>>>>> Of course, all of this is prototypey and, I assume, subject to >>>>>>>>>>>>> yaddayaddayadda... >>>>>>>>>>>>> >>>>>>>>>>>>> Eric >>>>>>>>>>>>> SF, 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 [email protected]. >> > To view this discussion visit >> https://groups.google.com/d/msgid/rbw-owners-bunch/a945609f-5789-4375-aabb-ac97bc46877an%40googlegroups.com >> >> <https://groups.google.com/d/msgid/rbw-owners-bunch/a945609f-5789-4375-aabb-ac97bc46877an%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 [email protected]. To view this discussion visit https://groups.google.com/d/msgid/rbw-owners-bunch/79e671b7-f39e-4fe6-bb27-cf5c363340dan%40googlegroups.com.
