Along the lines of adjusting beam, i keep tweaking mine until I get what I want then, in a dark garage, I walk the bike towards a wall to see where the cutoff line is that Peter talks about. For my conditions, I think I like that line to be maybe 3-4 feet up the wall. But, try that with the two bikes and see how they compare that way and adjust accordingly. That may also be a more accurate way of judging light intensity?
I don’t have SON or SP hub but a shimano. I’ve used the same wheel on two different bikes and feel there is some difference in the feel of the same hub between the two bikes. I am much more likely to feel a bit of vibration on the Atlantis at certain speeds than I am with the same wheel on my Trek. Maybe sound too. Why? I don’t know, just saying - different fork, stem, bars etc. As for noise, there is so much wind noise etc in the one video I listened to that I couldn’t pick out anything in particular. That said, I can’t remember what kind of fenders you have on the two bikes but I once mounted some metal Honjo’s on my Trek and I swear that rear fender was like a whisper disk transmitting and seemingly magnifying every sound of the drive train to my ears. I removed those, sold them and installed plastic fenders. Maybe not as pretty but much quieter! Just another thing to maybe consider. At the end of the day, it may just be that everything about the C makes it a better in the dark ride than the P? Sometimes that happens. Bill S San Diego On Saturday, April 24, 2021 at 11:34:24 PM UTC-7 Ben Miller wrote: > Leah, that'd be so cool if you could just bike over and we could put it up > in the stand for troubleshooting! I'd be all for that! > > On Saturday, April 24, 2021 at 6:02:27 PM UTC-7 Joe Bernard wrote: > >> I'll use right/left, which is actually how I think about it when I'm not >> trying to sound like a smart guy who knows bike words. When you push the >> front shifter all the way to the hardest gear up front, it's pushing the >> derailer to the right as you're looking down at it. In that hard/hard gear >> front/back the chain is furthest over to the right, too. I think your front >> derailer isn't moving any further right to clear the chain, it's hitting a >> limit. That limit can be adjusted out so the derailer moves right a smidge >> more. Does that make sense? >> >> >> >> On Saturday, April 24, 2021 at 5:54:45 PM UTC-7 Bicycle Belle Ding Ding! >> wrote: >> >>> This is exactly what I do. However, I know about trimming derailleurs >>> and so even when I nudge the front derailleur I cannot stop the chatter. >>> So, what can that mean? But it does go away in other gears. I’m stuck with >>> chatter in the HARD-HARD. (Leahspeak for whatever those gears are called. I >>> have no idea which one is “high” and which one is “low.” I know hard and >>> easy. >>> >>> Sent from my iPad >>> >>> On Apr 24, 2021, at 5:39 PM, Joe Bernard <joer...@gmail.com> wrote: >>> >>> I contend that only doing it in the big/small rings means the fd isn't >>> traveling far enough to clear the chain on that combo. On a 2-speed setup >>> like this it's common for the rider to use the friction shifter like index: >>> all the one way for the small ring, all the way the other for big. I think >>> she's shifting all the way and the derailer is stopping a smidge short. >>> Smartbrain 💡 >>> >>> >>> >>> On Saturday, April 24, 2021 at 5:11:53 PM UTC-7 Garth wrote: >>> >>>> 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 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/7fed2336-0063-44b3-bfd0-37875b724244n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/rbw-owners-bunch/7fed2336-0063-44b3-bfd0-37875b724244n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >>> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. 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