Thanks for all the insight.
@splash @firemunki I agree. I can’t remember a time I dropped my chain on my 1x mtn bike in 5 years.
I will look carefully over the bike to see if there are any issues that you highlighted @jfranci3. I only have about 1000 miles total on the bike and that is across 2 chains and cassettes.
Some more detail below.
Last CX season I had no issues. I did crash during the last race of the year and needed a new hanger and a rear wheel rebuild. I wonder if the derailleur is actually bent? It seems to shift fine.
After the season was over I threw on a longer chain and 11-42 cassette for the rest of the year to build a ‘gravel’ bike. Then this fall I swapped the 11-32 cassette back on WITHOUT changing the chain. I dropped the chain when descending a bumpy part of a course and shifting 3-4 times quickly down the cassette.
So I put the stock length chain back on with the 11-32 cassette bringing it back to full stock condition. I again dropped the chain to the inside during a race by shifting quickly up the cassette on the approach to a steep short climb.
Finally last week I was ‘riding along’ at speed on a dirt road and I shifted down to maybe the 12t and dropped the chain to the OUTSIDE which I don’t remember happening before.