[RBW] Re: shifting a 9 speed cassette with a 7 speed barcon?
I can't explain the details well (or at all), but it sounds like you have the base the shifter mounts to in the wrong orientation. Try remounting with the little nubby part on the base in a different spot. On Thursday, June 20, 2013 1:22:01 AM UTC-7, Philip Williamson wrote: I just put a Suntour Cyclone derailleur and a 9 speed cluster on my Gravel Roadster, which had been a singlespeed. http://www.flickr.com/photos/philipwilliamson/9089710197/ I'm trying to shift it with a Shimano 7 speed barcon, and I'm only getting 6 speeds out of it in friction. Is there a modification (I have a dremel and very little natural fear - is there a tab I can cut off?) I can do, or should I swap in the front shifter? The front has a lot of range, and it's redundant, since I'm shifting the front chainrings with a stick right now. Do I need to get a 9 speed shifter on there? Everything I see in a cursory search is people trying to shift fewer cogs with a wider range shifter. (how is that even challenging?) I'm using a Suntour bar-end shifter on my mountain bike's 9 speed cluster pretty successfully, which is why I thought this experiment might work. Philip www.biketinker.com -- 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.
[RBW] Re: shifting a 9 speed cassette with a 7 speed barcon?
If Joe has diagnosed the problem correctly (and I've seen this happen countless times with these shifters, so it's quite possible it's the case here as well), then see below. --- Posted by E.B. at https://groups.google.com/forum/m/?fromgroups#!topic/rbw-owners-bunch/aIpahOwpd7o 7/23/12 Tim, these are directions I've posted elsewhere to walk people through the same issue you appear to be experiencing. This is from my experience. Note that these instructions assume you have the common top normal type of RD. If low normal, reverse the HIGH LOW in the following. Once you incorrectly install and subsequently attempt to operate the improperly assembled barcon shifter, you've got to get back to point A. Shimano's directions for installation of new barcons even instruct the user to not operate or fiddle with the assembly prior to new installation. Unfortunately, those same instructions don't describe what exactly will happen if you do fiddle with them or the procedure to correct. To restore the lever range and indexing action, you use the lever boss cover as a *key* to wind the lever back to its original position. Merely rotating the lever boss cover to its correct position won't necessarily correct the problem. From recollection, here's how I have done this: 1. Remove or disconnect cable 2. Remove the lever and boss cover from shifter body 3. Install boss cover in correct orientation 4. Put lever in place on stud or axle, but in the LOW position; that is, with the lever nearly parallel to the ground. 5. With either the screw in place or with your thumb finger securely holding the lever against the boss cover, shift the lever to the HIGH position. 6. Repeat this action, if necessary, until the mechanism is restored to its original position. You'll know this when it won't rotate with gentle force. 7. Install the lever in the HIGH position and secure mounting screw. You should now be able to operate the barcon through the full range of indexing detents. 8. Re-install cable and adjust tension as necessary. Hope this helps. -- 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.
[RBW] Re: shifting a 9 speed cassette with a 7 speed barcon?
Aha! This seems very probable, and I'll get into it tonight. Thanks a ton for yours and Joe's input. Philip www.biketinker.com On Thursday, June 20, 2013 2:19:37 AM UTC-7, bobish wrote: If Joe has diagnosed the problem correctly (and I've seen this happen countless times with these shifters, so it's quite possible it's the case here as well), then see below. --- Posted by E.B. at https://groups.google.com/forum/m/?fromgroups#!topic/rbw-owners-bunch/aIpahOwpd7o 7/23/12 Tim, these are directions I've posted elsewhere to walk people through the same issue you appear to be experiencing. This is from my experience. Note that these instructions assume you have the common top normal type of RD. If low normal, reverse the HIGH LOW in the following. Once you incorrectly install and subsequently attempt to operate the improperly assembled barcon shifter, you've got to get back to point A. Shimano's directions for installation of new barcons even instruct the user to not operate or fiddle with the assembly prior to new installation. Unfortunately, those same instructions don't describe what exactly will happen if you do fiddle with them or the procedure to correct. To restore the lever range and indexing action, you use the lever boss cover as a *key* to wind the lever back to its original position. Merely rotating the lever boss cover to its correct position won't necessarily correct the problem. From recollection, here's how I have done this: 1. Remove or disconnect cable 2. Remove the lever and boss cover from shifter body 3. Install boss cover in correct orientation 4. Put lever in place on stud or axle, but in the LOW position; that is, with the lever nearly parallel to the ground. 5. With either the screw in place or with your thumb finger securely holding the lever against the boss cover, shift the lever to the HIGH position. 6. Repeat this action, if necessary, until the mechanism is restored to its original position. You'll know this when it won't rotate with gentle force. 7. Install the lever in the HIGH position and secure mounting screw. You should now be able to operate the barcon through the full range of indexing detents. 8. Re-install cable and adjust tension as necessary. Hope this helps. -- 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.
