I should add that I always aim for as narrow of a Q-factor as I can get on a set-up. The best has been an old Mavic 631 "Starfish" crank with a 39t chainring, mated to the narrowest (103 or 107 mm) bottom bracket I could find. The next best – by just a couple millimeters were Sun XCD and Rene Herse, then DuraAce track (I've a Hollowtech spindle version in 175 mm that I'd be happy to sell, actually). Mind, the DA track crank gets you a Q of 136 mm (!) so this is all going to be loads better, IMO, than any crank I've seen sold by Riv in recent memory. I reckon you could do well by finding a cheap Shimano 600 / TriColor crank on the Bay and sticking a generic, un-ramped 42t ring on it in the outer position, and a cheap-and-cheerful 103 mm bottom bracket. If you want stiff, go for a Hollowtech crank from Shimano. BTW, the bottom bracket on the QuickBeam sits a bit higher than on most of my other bikes, so you can clear a longer crank in fixed gear mode. Still, I'd recommend limiting tires to ~38 mm and eschewing fenders to minimize toe overlap.
- Max "narrow is aero" in A2 On Tuesday, March 5, 2024 at 6:07:02 PM UTC-5 Max S wrote: > Fun! At one point, I had both a SimpleOne and a QuickBeam in the stable, > plus two other fixies. I'll try to attach some photos as examples. > On the Rivs, I've run a number of different crank and cog combinations, > probably 10-20 in all. Some of the more interesting ones included a > double-ring WI ENO crank with a WI DOS freewheel + Surly Dingle (so that's > potentially 8 gear ratios), an Endless cog on a freehub, and a single track > cog + DA track crank. I ran everything from a Paul flip-flop, to a DA > track, to a burly 135mm spaced Deore disc hub, to a DT Swiss 350 freehub > laced to 60 mm deep carbon rims. > My tooth combos included 53x19, 52x19, 50x18, 46x17, 45x17, 45x16, 42x16, > 39x15... I found the good ol' 42x16 and 46x17 to be the more sustainable > ratios on most days. When I was in decent form, 52x19 and 50x18 with carbon > wheels felt good, but I haven't had such form for a couple of years now. > The most recent combo was a Rene Herse crank with a 40t narrow-wide ring > and 18t in the back, with full metal fenders, rack, and basket, intended > for commuting. But I'll be changing that to a 15t cog in the back for > faster, shorter rides. > For reference, I used to do 20-50 mile long rides on these single speeds / > fixies, with a typical elevation gain limited to ~2,000 ft over, say, a 40 > mile jaunt. > > - Max "idee fixe" in A2 > > [image: Rivendell Quickbeam Fall Foliage 2022 rs.jpg] > [image: Rivendell Simple One - GOAT.jpg] > [image: QuickBeam - Enve 67 carbon wheels - drive side.jpeg] > [image: QuickBeam - carbon wheels - chainline.jpg] > [image: Rivendell Simple One - portaging pastries from Boro.jpeg] > [image: Rivendell Ride - KalHaven Trail Summer 2022.jpeg] > On Tuesday, March 5, 2024 at 3:21:08 PM UTC-5 David wrote: > >> What are your drivetrain specs? Cranks, chainrings, etc. Simpleones, >> too, if that's what you're riding. It appears Riv doesn't offer the classic >> single speed crankset anymore. > > -- 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/3f899e13-7d3c-42b8-ba76-345802bc392dn%40googlegroups.com.
