Jan at Rene Herse likes the CX70 for both compact doubles and triples where the big ring is around 46 or 44 teeth. I have no interest in STI/Ergopower, however. I sticking with my Riv friction-only Silver bar end shifters. But here is Jan's rant: https://www.renehersecycles.com/trouble-with-sti-triples/
Since I do only friction shifting I was hoping it would work well for me regardless of whether I went with a Rene Herse 42-26 or a Riv Silver 44-34-24 triple. Because I'm still waffling there. :-) I just know that I'm dumping my old Sugino triple when the current chain rings wear out. I'm told that the Silver Triple will be available in 6 months. The Rene Herse double 42-26 is available now. So either could work. Just wondering if the CX70 would be a good derailer for either. My Claris is a triple, judging by the fact that it has the stepped channel that Jan goes on about. Doug On Tuesday, May 11, 2021 at 12:26:07 AM UTC-7 Ed Carolipio wrote: > Hi Doug, is your Claris triple specific? If it's not, that may account for > the rough shifts. Triple FDs have an inner plate that is taller than the > outer one. The CX70 is spec'ced for a double crank (46T top gear, 16T > outer-to-inner difference) may have problems with the triple as well. > > I've used a Claris double with a VO 46/30 and a Sugino 42/26 in friction, > and it worked well for both. Currently on my MIT Hillsen I'm running a > Silver 46-34-24 with a Deore FD-M591 (the 3x9 version), a 9-speed rear, and > Silver1 shifter. The M591 is matched almost perfectly with that crankset > and gearing: 48T top gear, 12T outer-to-mid difference, 22T outer-to-inner > difference. Front shifts are like butter with this setup. > > (BTW the crank is a Silver low-low double with a Sugino 46T chainring > replacing the guard. I didn't want to wait for a Silver triple...) > > The Claris triple (FD-R2030) will work but is less ideal: 50T top gear, > 11T outer-to-mid difference, 20T outer-to-inner difference. Better for > something like a 48-38-28 crank but will likely be made to work with your > 46-36-24. > > Good luck, > Ed C. > On Monday, May 10, 2021 at 8:44:40 PM UTC-7 Doug Williams wrote: > >> I have a Hilsen with 28.6mm seat tube and it looks like there is already >> a shim on there to mount my derailer, a clamp on Shimano Claris Triple. The >> shim seems to make it about 32mm. So if I replace this derailer, would a >> 31.8/28.6 clamp on be correct? >> >> I found a bottom pull Shimano CX70 in that size that looks nice. Everyone >> raves about the CX70 so I wonder if it would be better than my Claris? The >> Claris basically works, but it is not exactly smooth. I am currently >> running the Sugino Triple Crank 46-36-24 but I might switch to the Rene >> Herse 42-26 or wait for Riv's Silver Triple 44-34-24 to be back in stock. >> In any event, when this set of chain rings wears out, I am done with the >> Sugino hidden bolt. I just stripped the bitch and had to drill it out, so >> I'm done with hidden bolts. >> >> So...would the CX70 work with both double and triple 8 speed friction >> only (Silver Bar End) shifters? Or is it only going to work with a double? >> Would the CX70 be better than the Claris? >> >> Doug >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> -- 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/1caa0e54-923d-4004-aa19-bf3ae8c3c75cn%40googlegroups.com.
