If I understand clearly what you fw is doing, the freewheel is not freewheeling properly; there is some drag, either in the pawls or elsewhere inside the fw. I've had this happen with cassettes that were old and very gummed up from years of no cleaning. Even at 50+ mph, a fw that is working properly should not put enough drag on the chain to make it sag.
Me, I'd take your fw and submerse it in Mineral Spirits, or Kerosene/Paraffin, or some other toxic dissolver of petrochemical products. One way you can test this hypothesis is to remover the fw from the hub, hold it in your hand, and spin it backward. An untroubled fw will spin unobstructed and cleanly. On Tue, Jun 7, 2016 at 11:33 AM, René Sterental <[email protected]> wrote: > > @ Patrick: Thanks for the feedback on the freewheel/cassette. This is > actually an XT/A17 36 spoked wheel set that Rich built for me, and this > effect was only noticeable at the 25+ mph descents. Very noticeable when I > was descending at 42+ mph! How would I check to see if there is something > to fix/grease/clean? > -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
