I think it could be really useful to the group, and maybe to you, if you could describe what problem you are looking to solve.
The implication is that you have decided you need higher gearing, because you ride too fast for the gearing that is on the Clem. Depending on what tires you are running, the 38x11 highest gear on the bike now should be plenty to pedal well above 30MPH, but is not high enough to pedal up to 40MPH and beyond. Is that the problem? You spend too much time >30MPH and can't pedal at all when you are going >40MPH and need the gearing to keep up with your riding? That's a valid use case, but many would consider that an odd use case for a Clem. That's more like a Roaduno use case. You say that you spin out on most of the cogs when you are in the 26. Have you decided you don't need the 26? Have you considered moving from 26/38 up to 32/44? Then you wouldn't need a front derailleur. Have you considered going from 26/38 to a 40T 1x? Then you could sell your front derailleur and you wouldn't need one at all. Removing a chain guard and adding a third ring can be complicated because of the shift from the 38 to the big ring. Most triple front derailleurs are set up for jumps that are closer to equal. Have a look at the Silver Triple on the rivbike website. It's 24/34/44, nice 10 tooth jumps at each step. 26/38/44 with that 6-tooth jump could interfere with some front derailleur cage designs. That's more like an old-school half-step setup. The point is that a bicycle has a lot of interdependencies. You think you are changing one little thing, but it influences other things. Planning a solution is good, but it should be to address a well-defined problem. What problem are you trying to solve? Bill Lindsay El Cerrito, CA On Monday, July 8, 2024 at 6:06:56 PM UTC-7 wong.d...@gmail.com wrote: > Hello, > > I currently have a 2x9 with a 26/38 crank (Silver brand) and a 11/34 > cassette on my Rivendell Clem Smith Jr - H. > > I want to add a third/outer chainring (maybe a 44 or 46), which can be > done by replacing the Silver bashguard with an outer chainring. > > I am shopping for a replacement front derailleur (either a Shimano XT M771 > or XTR M971) because I don’t think my Claris FD is capable of a 3x. > > I am looking at the specs of both FDs. > > The “Front Chainwheel Tooth Difference” is 20T/22T for the XTR and 18T for > the XT > > The “Min. difference between top and intermediate” is 12T for the XTR and > 10T for the XT > > How closely do I need to meet these two requirements? If I get a 46T, I > don’t meet the Shimano specs. The Front Chainwheel Difference is 20T and > the Min Difference between the top and intermediate is 8T. Will either FD > work? I wanted to save money by leaving the 26/28 alone. > > On a side note, I don’t plan to use the smallest chaining (26T) very often > (if ever) as I basically spinout for most of the 9 cogs. > > Thank you. > -- 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/ff21d62c-1809-4af5-98bc-af66d1c70e90n%40googlegroups.com.
