+ 1 for the comments about rear brake shoes and chain length. Rear brake shoes: sloping dropouts work fine if the teeth difference isn't much more than 2 or 3 teeth; with an ENO hub, even 2 teeth is problematical. I solved the problem with the rim and pads not meeting by using only a front brake; no need for a rear if you are riding fixed exclusively, though don't do this with a freewheel. But having no rear rim brake frees you from much fretting.
Chain length: yes, you particular choice of cogs and rings may not let you use the entire theoretical length of the dropouts. I found this with 2 of my bikes. In the first case, with my ring and cog of choice for cruising, the chain was either just a wee bit too long or left the QR clamped overhanging the end of the dropout 00 these were Rivendell "short horizontals" circa 1999. I solved it by diligent use of a large rat tail file (a mm of horizontal distance along the dropouts gives a very surprising amount of additional chain takeup). In the second, I had exceptionally long dropouts installed aftermarket. On Tue, Jun 6, 2017 at 8:50 AM, alan lavine <cigar...@gmail.com> 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. > -- *30% Supply and Demand discount, listmembers only, on all resume, LinkedIn, and writing services, until Demand equals Supply! And there's more! 10% kickback for any referral resulting in fully paid, list-price contract. And still more! I am offering services in trade for a road bike, or frame and parts, that are period compatible with my AM hub, circa 1937 to 1961. See my website for what I do and what I charge; email for details.* Resumes, LinkedIn profiles, bios, and letters that get interviews. By-the-hour resume and LinkedIn coaching. Other professional writing services. http://www.resumespecialties.com/ www.linkedin.com/in/patrickmooreresumespec/ Patrick Moore Alburquerque, Nouvelle Mexique, Vereinigte Staaten ************************************************************************** ************** -- 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.
