Jim S asked: "My question: what determines the appropriate spindle length for a given build. Is it the crankset? Is it the frame? Is it something else? "
It's the chainline. Google "Sheldon Brown Chainline" and read that thoroughly. From what your read you should have a pretty good guess at what your chainline should be. You will definitely know how to measure your chainline. If the chainline you have is a lot larger than what it should be, then you chose the wrong BB spindle, and you'll have a good guess at what you should be using. If your chainline is good, then you likely picked the wrong front der. Bill Lindsay El Cerrito, CA On Wednesday, November 25, 2020 at 12:04:04 PM UTC-8 Jim S. wrote: > Hi all, > > I had a question about bottom-bracket spindle length. > > I recently put a bike together, and I mostly succeeded. But I failed when > I got to the front derailer. I just can't get the bike to shift to the > large chain ring. > > After a few days of fiddling around, (I read articles, I watched the Riv > videos, I watched the Calvin Jones' videos from Park Tools), I admitted > defeat and took the bicycle to my local bike shop. > > He told me that I'm not setting it up wrong, it's not a matter of > adjustment - I either need a different bottom bracket, or a different front > derailer - he's not sure until he looks at it more carefully. > > I took some solace in the apparent cause of the problem - it isn't my > mechanical ability - it was my parts selection! > > My question: what determines the appropriate spindle length for a given > build. Is it the crankset? Is it the frame? Is it something else? I'm > trying to figure out where I went wrong. > > (Maybe it's not the spindle length - maybe it's the front derailer I > chose, although I don't think so.) > > Thanks for any information. > -- 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/87d27fb1-c123-42e4-b761-750479664219n%40googlegroups.com.
