Steve is correct that a sequential triple works best with a narrow freewheel/cassette - you would hope any 9sp and greater cassette has narrow steps designed-in, but they usually don't - they usually have two-tooth-steps at the small cog end. I like my devised half-steps with wide rear <http://home.earthlink.net/~mike.sherman/shift.html?R0=26&R1=42&R2=47&C0=13&C1=16&C2=20&C3=24&C4=28&C5=999&C6=999&C7=999&C8=999&C9=999&C10=999&CAS=0&WI=7&CR=170&RT=1&ST=0&RPM=90&SRT=0&lRPM=80&hRMP=100&G=show&S=yes&TITLE=Lenton%20IRD%203%20x%205&HL=1>, and by definition, these work best following a different shifting algorithm than the sequential triple - there is no crossover, except on the granny ring - this is also the same with the compact double. . I pick on my friends who never use their front derailleurs. I used my FD even on my Campy road double, 52/39T, 13-26t. I shift FD for stop-and-go, and use rear for secondary adjustment.
On Wednesday, June 13, 2018 at 5:28:38 AM UTC-5, Steve Palincsar wrote: > > > > On 06/12/2018 10:33 PM, Ron Mc wrote: > > I wouldn't go random about it > Plug your cassette into *Mike's Gear Calculator > <http://home.earthlink.net/%7Emike.sherman/shift.html?R0=26&R1=42&R2=46&C0=12&C1=14&C2=16&C3=18&C4=21&C5=24&C6=30&C7=999&C8=999&C9=999&C10=999&CAS=0&WI=7&CR=170&RT=1&ST=0&RPM=90&SRT=0&lRPM=80&hRMP=100&G=show&S=yes&TITLE=Raleigh%20cyclotouriste%20triple&HL=1>* > , > vary your chainrings and see what you get > The goal is wide range with narrow, useful steps - 5-8 inches for your > steps, especially in the range from about 60 to 80 inches, which is where > we mostly live. > Another goal is to minimize duplicates - > with a poorly designed drivetrain, you can have so many duplicates that > you have many fewer gears than you think you have. > > On Tuesday, June 12, 2018 at 9:15:33 PM UTC-5, bo richardson wrote: >> >> the standard 46 or 48 >> 36 >> 28+/- > > > Another important consideration is the crossover point. It's nice not to > be forced by angularity or simply running out of gears to shift chain rings > in the middle of the range Ron speaks of. Some chain ring combinations > force a shift as soon as the ground starts to rise, so you're constantly > changing back and forth for minor terrain undulations; while others let you > ride all day in the middle range and only require a chain ring shift for > serious hills. > -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
