It is certainly not just Riv bikes. My second bike is a Soma Saga Disc, which has the same geometry as my Sam but with a slightly lower top tube. They even warn about the problem (first and last paragraphs): https://www.somafab.com/archives/product/saga-disc-frame-set-2
I use Kai's solution on the Sam. No hint of a problem yet. -- 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/23cf8fc4-e678-4e0f-82ff-d281fd2b6a1fn%40googlegroups.com.
