I've read about recent bb area gearboxes -- I've read the same article about Shimano's, which is very interesting, relying on chains and cassettes; I wonder if that means less internal drag than a bunch of cogwheels in a tight space, especially epicyclic gears?
But although these "occasional use" wheels are starting to become "main wheels" -- my original thoughts for hub gears were as occasional alternatives to fixed wheels, since my hill climbing and headwind abilities are not what the once were, and the AM wheel is now quasi permanent on the Matthews 2:1 -- I do like riding with very few but well selected gears, and these hubs each n their own way provide that. I understand Grant's fear of "black box" derailleur systems; I much prefer cables and no detents for my derailleurs. But somehow I do like riding gears with minimal range and presence all contained nicely in a rear hub. On Sun, Sep 12, 2021 at 10:45 AM Patrick Moore <bertin...@gmail.com> wrote: > Grant spoke of *.... the SRAM-SHIMANO cogs race that, you should know, is > going to culminate in an internal drive train that will be the end of the > obvious mechanical bicycle in..ten years?* > > I like Grant's preference for simplicity, but I also think that there are > huge undeveloped possibilities in hub gear drivetrains that will re-connect > us with an ancient line of drivetrain development that started > commercially in the 1880s -- there were earlier experiments -- and that > Sturmey Archer continued with its dozens of models until the 1950s. > > Since then, development has been aimed at the utility market, except for > Rohloff, but I think there are great possiblities for better designed and > better made hub gears with more intelligent gear spreads and greater > reliability and lower drag. > > Note that IVT claims 97% efficiency for its CVT hub gear. > > Patrick Moore, who expects a Sturmey Archer TC in the mail on Tuesday (2 > speed fixed with direct high and 86.54% underdrive, 76" and 66"), and who > also has AMs (3 speed freewheel: 111.5% overdrive, direct, 86.54% > underdrive, 72-65-56) and a TF (2 speed fixed, direct and 75% underdrive, > 72", 54"). > > > > that more or less dead-ended in the 1960s, with some exceptions like > Rohloff and Nuvinci > > -- > > ----------------------------------------------------------------------- > Patrick Moore > Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum > -- ----------------------------------------------------------------------- Patrick Moore Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum -- 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/CALuTfgtKofvv-VRWFmvi1az3TaveOxvBWp%2BPrX%2Bq6F-Su-ZA1Q%40mail.gmail.com.
