The sound from the video is like a rhythmic ratcheting/creaking sound as Leah pedals, it's not a FD rubbing sound as that has a smooth surface and is higher pitched smooth metallic sound. I'm listening to it loud and with headphones, eyes closed.
The obvious question is does the sound remain when not pedaling ? What does what when you do what ? What doesn't ? If I was a mechanic worth a penny I'd either ride with you to hear it, or ride the bike myself, or have you ride around inside the store and run along side. Just dropping it off and expecting them to experience what you're experiencing in real time as you ride is rarely fruitful, as no two people hear the same thing the same way, so it can become sort of a word game of "it sounds like ..... ". Anyways .... "stuff going wrong" is like a cosmic *slight-of-mind* joke we play on ourselves . What for , one may wonder ? Because we can. I ask for the sake of the ask, wonder for the sake of the wonder ...... it's Life for Life's sake ..... and there isn't anything else. On Saturday, April 24, 2021 at 7:27:48 PM UTC-4 Joe Bernard wrote: > Front derailers are the bane of my existence. I love the look of the nice > Campagnolo on my custom, but I'm super-OCD-fastidious about chain rub and > constantly adjusting the shifter to avoid it. My Susie doesn't HAVE a front > derailer, all I have to do is shift the back. No chain grinding, no OCD, > I'm free! 🕺🕺🕺 > > > On Saturday, April 24, 2021 at 4:11:48 PM UTC-7 Bicycle Belle Ding Ding! > wrote: > >> Joe, I bet you’re right about that! It is constant and always in the >> Hard-Hard gear, which is what I nearly always ride. I shall save these >> words and tell them to the shop when I get my bike back, do a test ride in >> the lot and invariably it makes the SAME noise. >> >> Ben, it seems that way to me, too. The wiring is probably the weakest >> link. I wish I knew some real-life Riv folks who would let me bike right on >> over and put my bike in their stand for diagnosis! Someday, I hope... >> >> Leah >> Sent from my iPad >> >> On Apr 24, 2021, at 4:00 PM, Joe Bernard <joer...@gmail.com> wrote: >> >> The rhythmic noise sounds like the chain barely grazing the front >> derailer, like what would happen if the chainring is ever so slightly out >> of round. In this scenario you could think you have the cage centered over >> the chain, then not notice the chain wobbling over to graze the cage while >> pedaling. This issue can be exacerbated by using a 9-speed (wider) chain >> with a 10-speed (narrower) derailer, which I suspect is the case on your >> bike. >> >> >> The other sound? No idea! 🤷 >> >> On Saturday, April 24, 2021 at 3:14:36 PM UTC-7 Bicycle Belle Ding Ding! >> wrote: >> >>> Oh, it’s not your fault, Ben. I am overly attached to this bike and I’ve >>> made myself a wreck over it. >>> >>> As far as the noise, there is more than one. But there is one noise that >>> sounds kind of like electrical current, and it never came at a predicable >>> time - like with pedaling. It would cause a little vibratory feeling and >>> was loud enough that I could pick it up using my iPhone to video. Last >>> night it was nearly constant and seemed to coincide with the turning of the >>> pedals. I caught it on video, which I will attach here. There are actually >>> two sounds being made, I think one is drivetrain chatter that I’m hoping >>> the shop sets straight for me this week. You have to tune your ear to it >>> but if you listen you’ll hear two atypical sounds - sort out the wind noise >>> and listen for a rhythmic sound and a constant chatter. They’re there. >>> >>> The sound when the wheel is spun with the bike stationary is slight, but >>> annoying. I don’t have that on video and the bike is now in custody of the >>> shop. But if Shutter Precision managed to make it quiet, why can’t Schmidt >>> do the same? And the flickering. That occurs at speeds that I think are >>> fast enough to generate a solid light. At the same speed a SP will hold a >>> steady beam. I know SON is the reigning champion for dyno, but why? >>> >>> Here are the videos. The first is a better specimen, I think: >>> >>> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "RBW Owners Bunch" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/rbw-owners-bunch/2Bte2sgNeQU/unsubscribe >> . >> To unsubscribe from this group and all its topics, 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/04cd26c0-c2f4-4ea0-9214-440740ecd178n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/rbw-owners-bunch/04cd26c0-c2f4-4ea0-9214-440740ecd178n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> >> -- 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/fcd203d3-62e9-449e-9cbf-18c5b3de8731n%40googlegroups.com.
