Eric, et. al.: I stumbled upon Shimano RR M760 quite a few years ago and snatched a bunch of 'em up. Enough to mount on four 'daily' riders and a few more to replace any that stop working or suffer trauma, etc.. Shift levers are all Dura-Ace 9 speed mounted on DT.
All of them are now as sharp and precise as the day they were attached. I don't ride gravel very often, my bikes are primarily built for the road—so there is that. But for every-day riding on the road, I can't image that giant spring softening up. And shifting up the cassette, especially under load, is as smooth and quiet and 'effortless' as can be. I know that's Grant's primary reasoning, because he told me. The one caveat—if there is one—is that if you suffer just a bit of dyslexia as I do (a left/right kind of dys) my experience tells me I can't go back and forth from 'low normal' to 'normal'. Makes me crazy. If you can always remember left from right, you'll probably have no problems. With a bit of compulsive polishing, these M760s are gorgeous units and will look perfectly 'at home' on any bike no matter the builder: https://www.flickr.com/photos/146626768@N06/48660635053/in/dateposted-public/ Another probably unnecessary/stupid maneuver I habitually follow is that when I park a bike at ride's end, I move the chain up the cassette to relax the spring. Don't know if this really matters or not, but it makes some sense to me. BEST / Jock Dewey / San Anselmo On Monday, August 22, 2022 at 1:09:31 PM UTC-7 campyo...@me.com wrote: > Path Less Pedaled just did an entire video episode on Rapid Rise/Low > Normal derailleurs that’s definitely worth watching. > > One point that came up in the comments from viewers is that shifting to > lower gears is done entirely through the strength of the spring in the > derailleur. Move the shifter to release more cable, and the *spring* pushes > the chain onto a larger cog. In practice, according to people who had used > RR/LN extensively, was that normal stuff that happens to derailleurs (they > get dirty or muddy, or need lubrication) makes that spring’s job harder, > with the result that it doesn’t work as well. > > Shifting to a larger cog also benefits from a slight decrease in pedaling > pressure while shifting (again, to make the spring’s job easier). That’s > not always possible when you’re grinding up a steep incline and need to > grab a lower gear. This may be part of the reason why RR/LN was phased out > … along with the fact that it was “different” in an industry that mostly > prizes conformity. > > Full disclosure: I’ve never used a RR/LN setup, although I do ride almost > exclusively with friction-shifting downtube levers. > > --Eric Norris > campyo...@me.com > Insta: @CampyOnlyGuy > YouTube: YouTube.com/CampyOnlyGuy > > On Aug 22, 2022, at 12:46 PM, Eric Marth <eric...@gmail.com> wrote: > > Do you run a Rapid Rise derailer? Do you like it? Have you had one before > and just didn't get it? What's the *deal?* > > With all the commotion over Rivendell's plan to build their own production > low-normal derailer I figured I'd try one out for myself. The first one I > picked up was an XTR RD-M951 which I suspected had a bent pulley cage, some > of you may remember I posted about this mech a few weeks ago. > > I found this Nexave on eBay for $17 so figured I'd give it a shot. This > model, to my mind, is *the* classic rapid rise derailer. Silver, shiny, > long cage, external guide pulley, pivoting cable guide for a short bit of > housing over the rear dropout. Grant mentioned that this was his favorite > model, cosmetically. I like it, too. > > So far I haven't put many miles on it but no complaints. I like getting > into the easier gears with a light touch. I'm running the derailer on my > Appaloosa with a Silver 38/24 crank and a 9-speed 11-36 cassette. It's > wired up to the original Suntour Power Thumb shifters which are mounted in > the reversed, under-hand style also known as the Riv-versed or Rivendell > brifter style. > > With the reverse-mounted shifters I did like pushing the lever away from > me to get an easier gear with a high-normal derailer installed. That made > sense. Pulling the lever to me for an easier gear is taking a bit of > getting used to but the action required is so light that it's not a problem > so far. > > Unfortunately, I haven't yet been in a situation where I'm climbing and > experience a mis-shift under torque resulting in the derailer bumping me to > an easier gear. I'm looking forward to it, really. > > One thing I can't get my head wrapped around is why Grant and Rivendell > want to make this happen and go through so much trouble and expense. It is > quite a complicated undertaking. It seems if you're into low-normal > derailers they're out there if you look hard enough and have some patience. > Perhaps it's just what they do and what they're about. They want something > to exist that has gone out of production, they make it so, and that is the > purest expression of their ethos and what they love about bikes and > components. "Isn't this great? People should be able to find and use > these!" > > <IMG_1983.JPG> > > > -- > 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/892c029a-4efd-4b00-9dc7-840361116a39n%40googlegroups.com > > <https://groups.google.com/d/msgid/rbw-owners-bunch/892c029a-4efd-4b00-9dc7-840361116a39n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > <IMG_1983.JPG> > > > -- 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/d65f6f06-3d70-41b4-bb7f-a06dc47fdcb7n%40googlegroups.com.
