Here are my questions: 1. Why did you put a new rear wheel on your Appaloosa? 2. What rear hub is on your new rear wheel? 3. In the youtube video you aim the camera at the cassette but don't show what you are doing at the input. What are you doing at the input? I think you are backpedalling a little and then deliberately jerking the pedals forward. The chain isn't going slack and slamming tight on it's own. You are doing that on purpose to illustrate the noise. Correct? 4. When you "pulled apart the rear hub and inspected the freehub pawls", how many pawls are there? 2? 3? 6? To be clear, the pawls are the tiny pieces of metal that are springloaded and individually click into the splines of the drive ring or drive shell, depending on the way your rear hub is architected. 5. When you say you inspected the pawls, did you actually inspect the pawls, or did you mean you looked at the splines of the driveshell? 6. Do your pawls have a single engagement end like most freehub and freewheel pawls, or are they toothed with two or three teeth on their business end?
I have a theory, and I'm pretty sure it's correct, but I don't want to post a long and correct description for the wrong rear hub, because it will confuse people who are not mechanics. I don't mind confusing people with long correct descriptions when they are relevant to the problem at hand. Bill Lindsay El Cerrito, CA On Monday, September 21, 2020 at 6:41:50 PM UTC-7 Litho wrote: > Some context: put a new wheel on my Appaloosa a few days ago. New wheel, > all other parts of the drivetrain the same. A few minutes into the first > ride around the block, I heard a ping from the rear of the drivetrain. > Stopped to see if the chain was off. Nope. Got on and didn't hear it > again until later in the ride. But only once more. > > Back at home, admiring the new wheels, spun the pedals backward and hopped > on to ride down the driveway. As soon as I pedaled, PING. > > So, drivetrain noise are notoriously irritating to root out. This one is > driving me nuts. I've done the following: > -Put another wheel on the bike to see if it still made the noise. It did > not. > -Put a new chain on. Still made the noise. > -Tuned up my rear derailleur. Still made the noise. > -Swapped cassette. Still made the noise. > -Put the rear wheel on another bike. It made the same noise on the other > bike. > -Tightened every bolt / nut in the drivetrain to manufacturer's spec using > a torque wrench. > - Pulled apart rear hub and examined freehub pawls. No apparent damage. > Cleaned and relubed freehub. Reinstalled. Still made the noise. > -Inspected and reinstalled the axle. Still made the noise. > -Checked and adjusted spacer on cassette. Still made the noise. > > What variable have I not yet isolated and tested??? Where does the > pinging gremlin live??? > > I'd love to hear some suggestions. > > Here's a video complete with the ping: > https://youtu.be/4v4TO9NKpAE > > -- 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/69a9b7ce-ff4f-4d20-99e1-636a8b7b1760n%40googlegroups.com.
