Yep, this sounds like it might be mechanical, especially if it is a 'hard stop' at the 7th cog.
The little ear thingys need to be aligned to work properly. AND, to compound matters, if you have put it back together incorrectly and shifted it, then took it back apart, the interior indexing system might be mis-aligned and need correction. This is all difficult to explain in a forum post, but this exact thing happened to my bro while we were on a multi-day tour in Oregon last year. Had to take the whole thing apart, stare at it for awhile, have a beer, and then had the 'aha!' moment. Once corrected, it shifted perfectly. On Friday, January 30, 2015 at 10:43:36 AM UTC-8, Jay in Tel Aviv wrote: > > Are you sure the square thingy is aligned properly? If it's not, that > would give you the same problem. > > On Friday, January 30, 2015 at 8:40:23 PM UTC+2, Tim Gavin wrote: >> >> Maybe try an ultrasonic parts washer. The LBS I work at has one, call >> around? >> >> I don't know if ultrasonic is ok for the plastic innards. I do know that >> it will take the logos off aluminum parts. >> >> On Fri, Jan 30, 2015 at 12:18 PM, Jim Bronson <[email protected]> wrote: >> >>> OK, I sweat a lot when it's hot and I live in Austin, Texas so it gets >>> really hot. Got a bar end that's gummed up with sweat by-products. >>> >>> Is there any way to disassemble the indexing mechanism? I can only >>> use 7 gears and then it won't go any further. I've had it soaking in >>> a bucket of paint thinner for a couple of days hoping that whatever >>> grime was in there would be loosened up, but so far no luck. FWIW, I >>> don't get a full range of motion when I switch it to friction, either. >>> >>> Or should I just look for some new Shimano downtube shifters to mount >>> onto the existing pods? >>> >>> I haven't used this shifter in a while because I was going to ride a >>> 1000K in October and discovered last minute that I was not able to get >>> into the two highest gears, so I threw a Microshift bar end in there >>> that I had sitting around. But I would like to be able to use the >>> Shimano shifter, if not in my Riv, then maybe somewhere else where I >>> wouldn't sweat on it so much. >>> >>> In case you were wondering...the Microshift has worked great but it's >>> not quite as precise as the Shimano, i.e., there is more slop in each >>> gear detent. Sometimes you have to lightly press down on the lever to >>> quiet the drivetrain. Not so much pressure that you shift into the >>> next gear up, just enough so it sits against the detent. >>> >>> >>> >>> -- >>> Keep the metal side up and the rubber side down! >>> >>> -- >>> 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 post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/rbw-owners-bunch. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- 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 post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
