Thanks, Erl; I'll be interested to look at those links; I may have read them in the past. Good to know that you sense no drag.
Again, lovely bike. On Sat, Sep 18, 2021 at 7:56 AM WETH <erlhous...@gmail.com> wrote: > Hi Patrick, > Thanks. > No, I do not notice drag, though others, who scientifically measure such > things, do. With a steel frame, Riv Saddlesack, racks, front basket, and a > suburban/urban commuters cadence and pace, I do not feel a difference. Nor > do I see a time nor average speed difference compared with my derailleur > equipped RBT. (I actually thought the 650bx48 tires on the Bantam would be > noticeably slower than the 700 x 38 tires on my RBT.) The whole > Pinion/belt interface is so smooth; it is sublime. My Onyx instant > engagement rear hub eliminated any engagement delay that is often cited as > a drawback to the Pinion system. > Here are two articles about the Pinion; the second speaks to "drag". > https://www.cyclingabout.com/tour-with-a-pinion-gearbox/ > https://www.cyclingabout.com/speed-difference-testing-gearbox-systems/ > All the best, > Erl > > > On Wednesday, September 15, 2021 at 4:58:49 PM UTC-4 Patrick Moore wrote: > >> BTW, very nice! >> >> Do you notice more drag than with a derailleur drivetrain? >> >> On Sun, Sep 12, 2021 at 6:19 PM WETH <erlho...@gmail.com> wrote: >> >>> Hi Patrick, >>> I'd add Pinion to your list in addition to Rohloff. I recently had Bob >>> at Bantam Bicycle Works <http://www.bantambicycles.com/> build me a >>> custom around a Pinion P1.18 gearbox. I've ridden it 1,000 miles since >>> early July, including a 6 day, 340 mile tour through Ohio. I enjoy the >>> gear spread, the smoothness of the carbon belt drive, and the lack of >>> regular maintenance. Since I am straying off topic already, I'll leave you >>> with a link: https://pinion.eu/en/p-line/ >>> And a photo. >>> All the best, >>> Erl >>> Kensington, MD >>> [image: C84103C9-33A9-455A-AD41-717DD3DDFAB3.jpg] >>> On Sunday, September 12, 2021 at 12:46:08 PM UTC-4 Patrick Moore 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 >>>> >>> -- >>> >> 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/340df550-938d-4c61-90dd-6a33f881180bn%40googlegroups.com >>> <https://groups.google.com/d/msgid/rbw-owners-bunch/340df550-938d-4c61-90dd-6a33f881180bn%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> >> >> -- >> >> ----------------------------------------------------------------------- >> 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/dc8e4735-cf7b-48fb-9093-c94cf4df4dedn%40googlegroups.com > <https://groups.google.com/d/msgid/rbw-owners-bunch/dc8e4735-cf7b-48fb-9093-c94cf4df4dedn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- ----------------------------------------------------------------------- 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/CALuTfgspxQYoyqAqu1reH31NZe6ixPcJEazBRswnsVRM%2Bm5uEA%40mail.gmail.com.
