Well done. I'll be saving this for future reference. "Pink Flamingo" is icing on the cake.
On Sunday, March 12, 2023 at 9:45:22 AM UTC-7 lconley wrote: > Last year I was riding a single speed Mystery Bike on the levees here in > south Florida, this year it will be a 2x9 Rosco Bubbe V1. Analog calls > their wide ratio gearing "Turkey Vulture"; in keeping with the two word, > four syllable avian theme, I will call this "Pink Flamingo” gearing. Here > in South Florida, gearing is used to compensate for wind direction, not > terrain, so close ratio is the name of the game. > > I combined the 1st 6 corncob cogs of a 14-25 Sora 9 speed CS-HG50-9 > cassette (14-15-16-17-18-19) with the last 3 cog section of a Dura-Ace 9 > speed CS-7700 cassette (21-24-27 titanium cogs on aluminum carrier) to get > my Sora-Ace 14-27 cassette. I used all Dura-Ace aluminum spacers instead of > the plastic Sora spacers. Probably would be just fine with the stock Sora > 14-25, but now I can call it “Sora-Ace” and it saved 40 grams while adding > a lower low. > > Crankset is a VO Drillium 34-48 (110 BCD). The result is 34 to 93 inch > gearing – most important to me is the 51, 54 , 57, 61, 66 on the small > front chainring for riding against the wind, and the 62, 68, 72, 76, 81 on > the large chainring for riding with the wind. I don’t ride very fast. The > 34 x 27 (34 inch gear) is handy for the short but quite steep slope to get > from the parking lot onto the levee. > > Rear derailleur is a 9 speed Dura-Ace RD-7700 (beautiful used condition > from eBay for a very reasonable price) and front derailleur is an NOS 7 > speed Shimano RX-100. I did have to file a small notch in the front > derailleur to clear the water bottle boss to allow the front derailleur to > mount low enough for best shifting. Dura-Ace 9 speed bar-end shifters on > Paul Thumbies handle the index shifting. > > The chain, like on most of my bikes, is an ultrasonically cleaned and > Molten Speed Waxed stainless steel Wippermann 9 speed. > > [image: Sora-Ace.jpg] > > > Laing > > Delray Beach FL > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/0cccceae-f7c9-4cfe-a37b-29b8f1c79be3n%40googlegroups.com.
