If by the 3 mounts on the seat stays you mean these * http://tinyurl.com/3v28e6l* then the purpose is to be able to mount the shorter/smaller version of the Nitto Big Rear Rack on the larger 700c models (my photo shows the smaller rack model mounted on the 58 Hunqapillar). The greatest advantage of the smaller Nitto rear rack over the larger one, is that the smaller one fits much closer to the seat stays and thus goes under the saddle better. I prefer such a setup for the large saddle bags (Sackville or otherwise) as it prevents the top of the rack from interfering with the saddlebag and even allow the saddle bag to rest there instead of falling on top of it as you can see in the photo (showing an Acorn large saddlebag, which is much smaller than the Sackville or the Carradice Camper).
This is a recent modification/addition that I believe started in the last 12-18 months on some models. It's my preferred seat stay option now. I don't have it on my Atlantis, which is a bit older than that. René * * -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
