Not sure if this is a relevant data point, Bobby, but the Rohloff shifter on my Stealth Bomba is nothing more than a cable puller – the indexing that is provided by the Alfine shifter actually resides, for the Rohloff, inside the hub. (Exactly HOW it is provided for inside the hub is beyond my meager technical capabilities.) So the Rohloff, it seems to me, is doing exactly what you’re talking about the SRAM/Sachs Spectro doing. Also, the indexing shifters (like the Alfine) can get out of adjustment, which causes them to chatter/switch between gears (typically easy to fix/adjust with the barrel adjuster on the shift cable) – so it must be the case that you could do the same thing manually via friction shifting.
But why do you want to friction shift an IGH? One of their big advantages is being able to shift while stopped (at a light, for example), and friction shifting an IGH would make it impossible to do that and know whether you’re really in gear (since, the bike being stopped, you’d have no cues from the noise or ghost shifting in the hub). I must be missing something, but that’s my 2 cents. From: rbw-owners-bunch@googlegroups.com [mailto:rbw-owners-bunch@googlegroups.com] On Behalf Of Montclair BobbyB Sent: Friday, February 28, 2014 1:08 PM To: rbw-owners-bunch@googlegroups.com Subject: [RBW] Re: 9 to 8 speed worth it for better friction shifting? Since we're talking friction-shifting, I thought I'd ask again (cuz I do this periodically): Anyone have any success friction-shifting an internal-geared hub? Yes yes, I know about potentially damaging the internals if you're not quite 'in-gear', but I'd really like to figure out a way to do this safely. If you think about it, we get familiar enough with friction-shifting derailleurs on feel alone, such that we never really have to look down to know we've shifted into the right gear. Can we not get the same kind of 'feel' from an IG hub, even if it requires over-shifting, then settling back squarely onto the cog, so to speak??? There are some IG hubs (like the SRAM/Sachs Spectro and Dual Drive hubs) that use a 'click box' with a push rod to 'switch' into the next gear...(which I believe is different from moving the planetary gears directly via cable movement, but I could be mistaken). The push-rod mechanism seems almost like it's (in essence) already indexed within the hub, and the cable movement via the clickbox merely causes the next shift. If this is the case, I suppose the between-gear problem could potentially be a non-issue (than say with other types of IG hubs like the Alfine or Nexus)... You just move the cable enough to force the next shift, and then let up slightly?? Any insights from the Engineers/Intellectuals/Crazies in this group whether this makes any sense? Maybe I should just do like the Mythbusters and go for it, risking life and limb in the interest of bicycle science... BB On Friday, February 28, 2014 1:28:05 AM UTC-5, Michael wrote: Update: I called RBW and they said it would definitely help to go to 8 speed cassette over the 9peed. -- 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<mailto:rbw-owners-bunch+unsubscr...@googlegroups.com>. To post to this group, send email to rbw-owners-bunch@googlegroups.com<mailto:rbw-owners-bunch@googlegroups.com>. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/groups/opt_out. ------------------------------------------------------------------------------ **************************************************** To ensure compliance with Treasury Department regulations, we advise you that, unless otherwise expressly indicated, any federal tax advice contained in this message was not intended or written to be used, and cannot be used, for the purpose of (i) avoiding tax-related penalties under the Internal Revenue Code or applicable state or local tax law provisions or (ii) promoting, marketing or recommending to another party any tax-related matters addressed herein. **************************************************** **************************************************** This email (and any attachments thereto) is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this email, you are hereby notified that any dissemination, distribution or copying of this email (and any attachments thereto) is strictly prohibited. If you receive this email in error please immediately notify me at (212) 735-3000 and permanently delete the original email (and any copy of any email) and any printout thereof. Further information about the firm, a list of the Partners and their professional qualifications will be provided upon request. **************************************************** ============================================================================== -- 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 post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/groups/opt_out.
