Alan, Awesome questions! SS riding is a stunning freedom that is difficult to explain, humbling to learn (let the bike teach you), and wondrous to experience.
The simplest thing to do in your project is to set up your bike as a SS with only one gear option. Ride it and learn for a year, and if you need more gears, explore your options then. Here's why I say that: The simple (one) answer is the QB and S1 have unique and brilliant extended, sloped dropouts that 1) allow up to an 8(?) tooth difference in tooth count accommodating the rear wheel sliding forward and back without messing with the brake alignment. Thus, I do not believe a set-up like I have on mine (White Industries duo 19/16 ss cog, 32/40 chain rings) is possible on other frames. It is easy to get lost in the details of SS gearing. Have you ridden SS? If you have, then you've already learned a lot about the feel of riding one. If not, try a "poser SS" with your current geared bike. Figure out a gear that you think is what you want in SS and ride it for a month without shifting out of that gear. Based on my own experience with SS over the last few years riding in the Colorado mountains, I would not set up a SS bike with less spread than I have (which equals the spread of a 3-spreed IGH). Basically, I can cover 90% of my terrain with my 40/16 gear and the remaining bits I could easily walk. For shorter rides, I can cover 100% of the terrain with my high gear, for longer rides like my century yesterday, I stay more aerobic, so switch sooner to my lower gear. Also, always remember every bike come with an LCG (lowest common gear), aka hike-a-bike. Thus even a single SS has two gears. Grin. With abandon, Patrick On Tuesday, June 6, 2017 at 8:50:07 AM UTC-6, alan lavine wrote: > > Hi All, > The simple one for sale got me to thinking about doing something similar > with a fixie frame I made at United Bicycle Institute a few years ago. > IIRC you can put 2 closely spaced chainrings up front. Then in the rear > with flip flop hub, you can use a double freewheel on one side and even a > double fixed cog on the other. Is this right? How close do the chainrings > and cogs need to be to avoid having to change the chain length? Can you > use a "crossover" gear, i.e. one chainring with either of the cogs in the > rear (FW or fixed), or do they need to be in the same plane? Will it work > with a standard track dropout or was there something unique on the simple > one/quickbeam? > > Can someone give me examples of the gearing they use? What double crank > works or do I have to make a custom one? My frame was originally built > with a 120 rear but I respaced it to 126...will that work? Are flip flop > wheels available with quick release, and is it OK for fixed gear riding? > I'm wondering how often I would change the gears if I needed a wrench for > the axle nut. > > Lots of questions, sorry, but I'm thinking it would make an interesting > project. > > Thanks in advance, > Alan > NYC > -- 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 post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
