I have experienced similar experiences after replenishing drivetrain consumables (chain, cogs, rings) and cables, which cause me to readjust derailleurs/shifters. For sure a fresh drivetrain is touchier about chain line until the teeth are burnished by the chain and have more surfaces that may pluck at the passing chain instead of moving together smoothly.
I have experienced some riding which deflects the bottom bracket of the frame laterally like low RPM mashing, steepest climbs, heavy or strong riders, can deflect the route of the rear derailleur cable and functionally changing its tension, inducing momentary out of adjustment sensations. The terrain I rode when spending lots of time off road (took a very surprised Bridgestone rep Chris Watson out on the trails for an informational ride) and the series of mountain bikes I had produced varied degrees of this effect. Had to sell my MB-0 within six months because it flexed so much in my size I knew I would kill it if I continued to riding in that terrain, in that manner. At least it had a cyclic flex limiter; the back wheel. On many climbs I would alternate chainstay rubbing, left side, right side, continuously unless I changed gear or was able to more effectively spin a gear to deemphasize the 9 and 3 power surge of pedal mashing. Clipless pedals helped turn smoother circles with fewer power surges. Did find that Suntour drivetrains were less susceptible to the effect than Shimano. the latter seemed particularly sensitive to being perfectly adjusted. Andy Cheatham Pittsburgh > Submitted for your consideration: a crunchy drivetrain problem on my new > Hilsen build. I’m experiencing some auto-shifting and cog skipping when > going uphill, pedaling hard or pedaling out of the saddle. I’d > appreciate the group’s suggestions for a solution > -- 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?hl=en-US. For more options, visit https://groups.google.com/groups/opt_out.
