I have a converted Sugino hi/low a la Grant-style with a bash-guard in place of the outer ring. I briefly had it on one of my bikes, where it worked fine, but just recently took it off and replaced my GF's triple with it. On that drive train, it will frequently get stuck between the hi-low chainrings while she is downshifting. The chainrings are very new. The chain on GF's bike isn't new, but checking for stretch with a chain tool, it isn't overly worn. I think (?) i've installed the chainrings correctly, but maybe not?? Any thoughts, as I'm confused by what's happening. My first thought is just to replace the chain (even though it appears to have some life left). Oh and on the original bike (mine) it was a 9 spd with a 10 spd chain. This bike (GF's) is a 9 spd with a 9 spd chain. Curious that it would work better with a 10 spd chain?
On a related note, Patrick Moore said: "IME, the bigger hassle is getting the best lateral angle for the cage." Totally agree. Any shortcuts/tips to this? Ben On Tuesday, April 6, 2021 at 1:57:36 PM UTC-7 Patrick Moore wrote: > I had to cut off the stop only because I perversely insisted on using an 8 > or 9 speed-era road front der with a much later and 2-piece mountain bike > triple. > > Without the stop, the derailleur will kick the chain over the bash guard > and off the crank entirely; the reason is that the derailleur has to be > positioned high enough (*just* high enough) for the outer cage to clear > the bash guard, otherwise it won't move outward enough to shift the chain > onto the "middle" ring. Note that my bash guard is the equivalent of a 44 t > ring, IIRC; ie, not much bigger that the 42 now in "middle" position. > > The matching curves is purely fortuitous. > > On Tue, Apr 6, 2021 at 12:31 PM Matthew P <[email protected]> wrote: > >> Patrick that looks great. >> Nice coupling of the two arcs of the toothless outer ring/guard and the >> fd cage. >> Did you really have to hack off the stop, as in, backing out or removing >> altogether the limit screw wasn't enough? I believe you regardless. >> >> I'm slowly grasping a few things: >> 1. the fd has to clear the toothless outer ring, which probably places it >> a little high with respect to the outermost ring that has teeth >> 1.a. when people say "mount the FD high" is it high with respect to >> that ring (middle in the triple) or high wrt the toothless outer (aka >> really high for the middle ring)? >> 2. I bet that guard/toothless-ring also works great as a chain stop. >> pretty hard to throw the chain off your biggest ring when you have one of >> those, no? >> But if the chain never comes off I don't get to do my current favorite >> bike trick: put the chain back on just using the fd (and pedalling, of >> course) >> >> - Matthew >> "I passed on the bash guard triple but am liking them more" and >> "i can always throw it off the inner ring for fun" and >> "but I can barely get the chain there in the first place right now" and >> "would like to see this ugly-functional fd" and >> "doesn't yet comprehend long (road?) vs. short (mtb?) fd's" >> P > > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/0f87be06-54c1-4bbb-97b0-afa6766c0be2n%40googlegroups.com.
