Hi Ted, I have my metal fenders (one set aluminum; another stainless steel) attached at three points. I've heard from a few people about triangulation to hold the fenders to prevent fatigue and stress cracks. (I've probably read this on BQ or Jan's blog.)
For the front fender, I have the typical fork mount, the typical attachment to stay (towards the rear), and an attachment at the front rack. (If there's no front rack, I attach a second stay to where a front rack mount would be.) For the rear fender, the chain stay bridge, the brake bridge, and a rear stay. RE: arc from chain stay to brake bridge ... "unsupported and fairly long". I'm not sure that I'm following you on this part of your question. This section is probably the most solid point for rear (or front) fender. If you mean the section between rear stay and brake bridge, I don't think it's much of a problem (i.e., a single rear stay appropriately located and mounted is fine). Good luck, shoji On Wednesday, December 9, 2015 at 12:34:54 PM UTC-5, ted wrote: > > I recall seing plastic Gilles Berthoud fenders on Peter White's site some > years back. The fender material was like SKS fenders and the struts were > the same type used on the metal Berthoud fenders. Does anybody here know > about those? Specifically does anybody know how many struts were on each > fender? > > Metal fenders have a single stay. Plastic fenders (e.g. SKS) have those V > shaped stays that attach to the fender in two places. Sort of like using > two stays on a single metal fender. I have always assumed that the plastic > ones need more attachment points because they are more flexible than metal > ones. However the arc from the chain stay bridge (or kick stand plate) to > the brake bridge is unsupported and fairly long. So I wonder if a single > well placed aluminum stay would be sufficient. Perhaps the thicker aluminum > stays are stiffer than the thin steel ones used by SKS, and with the > different kind of stay one is enough. > > -- 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 http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
