You can also do double 1x with two chainrings and skip the front derailleur and shifter - manually shift the front when desired (usually while stopped but down shifts can be done while riding easily enough using your foot to nudge the chain).
-Dave On Sunday, April 30, 2023 at 8:46:46 AM UTC-4 rmro...@gmail.com wrote: > I was just writing elsewhere that (so far) my 2 x 7 drivetrain I installed > on my Gus is like having two 1x7 drivetrain’s. That’s the magic of the > Silver wide/low crank with 38/24 rings. On road/gravel rides I’ve yet to > use the 24 & I’ve not spun out in the top end. On local quite hilly > singletrack I just put it on the 24 & leave it there.:) > > Sent from my iPhone > > On Apr 30, 2023, at 1:04 AM, Joe Bernard <joer...@gmail.com> wrote: > > I had a nice 1x and wanted slightly lower gears for some crazy hills > around here, but didn't want to lose the already relatively low top end so > mashed some parts together and this is the result. > > > Starting point: SRAM Rival 1 (with clutch) rear derailer, I believe the > largest cog this is supposed to handle is 42t. I added a Garbaruk cage and > pulleys and it shifts a SunRace 11-50 11-spd cassette with a SRAM Apex > trigger shifter. The front is a Sugino XD crank with 34t chainring. > > Ok what happens if I want double rings? The manufacturer stuff says I > can't use a 1x derailer (I don't know why) so I thought I would cheat a > little and make it kind of two 1x's by adding a 30t inner ring, Shimano > Deore (DynaSys 10-spd double) FD and a Silver2 thumbshifter on the stem. It > works! > > Ok it doesn't work completely fabulously yet, the downshift to the small > ring doesn't always take and I still have some fiddling to do but overall > the bike works well for me using all of the gears in the 30t plus grabbing > the top 2 or 3 in the 34t on occasion, and sometimes just staying in the > 34t like before. It's not a massive increase in gear range, I think of it > as an expanded 1x. > > Does it make sense? I don't know, maybe this can be duplicated by ye old > triple drivetrains with 11-36 cassettes but I don't like triples. I like > this! > > Joe "tried to ditch front derailers, ended up with a front derailer again" > Bernard > > <Screenshot_20230429_211431.jpg> > <Screenshot_20230429_211411.jpg> > > -- > 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-bun...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/rbw-owners-bunch/05a3e139-628b-4f5f-be5b-ee3dc50e03d9n%40googlegroups.com > > <https://groups.google.com/d/msgid/rbw-owners-bunch/05a3e139-628b-4f5f-be5b-ee3dc50e03d9n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > <Screenshot_20230429_211411.jpg> > <Screenshot_20230429_211431.jpg> > > -- 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/daff54f3-4fc9-4981-b800-d89cf894a1dcn%40googlegroups.com.
