Before I go chasing this problem down and taking things apart unnecessarily I was hoping for a more definitive answer as to what it might be. (p.s. I did a search came up empty handed)

While coasting at realitively high speed, say 15-20 mph, my chain will slack at the bottom of the chain line. No bouncing and/or releasing, just slacked until I pedal again. Also, I know this is usually a question on this normally, not back pedaling either. I serviced the freehub about 2 months ago. Clean the drivetrain weekly usually.

So....my question. What is usually the culprit of this type of problem?


I am going to say it's the freehub. Curious of what you answer is.