Thanks for the info. I had assumed that the 130 hub had a wider shell and chainline. Sounds like it wouldn't help my situation.
On Monday, December 11, 2017 at 3:32:16 PM UTC-5, Jeremy Till wrote: > > The Surly hub came/does come in 130mm and 120mm OLN's but I think they > both share the same hubshell, so both would have the same chainline. The > 130mm just has a longer axle. In any case, my Casseroll wasn't a stock > build, it used a variety of track hubs in back, including a Dura-Ace and a > Phil Wood that I had sent to Phil to respace from 120mm or 126mm out to > 130mm. They all had a 42mm chainline, which is the 120mm track hub > standard. > > Nevertheless, it does sound like frames differ a lot here: chainstay > diameter, how closely to the center of the BB shell the chainstays attach, > chainstay bends/dimples, and chainstay length can all help or hurt > clearance here. > > On Monday, December 11, 2017 at 8:58:23 AM UTC-8, EasyRider wrote: >> >> I agree, how much leeway one has on either side of about a 40t chainring >> is likely going depend the frame. >> >> I used a 120mm hub with spacers in a 1988 Trek frame that probably had >> 126mm dropouts, but a 40t was as big as I could go. But that makes sense; >> the bike was originally spec'd with a 40t inner ring on a double. It wasn't >> designed for someone to easily convert to singlespeed 15 years later. >> >> The Casseroll on the other hand, was. The stock singlespeed version used >> a 130mm Surly hub. I assume that hub, and some thoughtful chainstay design >> explains how they were able to get a 48t ring on it. >> http://salsacycles.com/files/pages/Casseroll_Single.pdf >> >> >> On Monday, December 11, 2017 at 10:57:39 AM UTC-5, Jeremy Till wrote: >>> >>> I guess it depends on the frame but I think the concern about chainring >>> clearance on a 130mm spaced frame is overstated. I used to run a Salsa >>> Casseroll as a fixed gear, and it had 130mm hub spacing. A 42t chainring >>> at the appropriate chainline for a track hub (~42mm) never had any >>> clearance issues. >>> >>> On Saturday, December 9, 2017 at 11:11:36 AM UTC-8, EasyRider wrote: >>>> >>>> I'm eager to see the Frank Jones on the Blug. Should be any day now? >>>> >>>> I hemmed and hawed and bought a 53 rosco road instead -- same thinking >>>> as you and the bob Jackson: 130mm spacing, can be single speeded or geared. >>>> >>>> But, again, the drawback of a 120 hub in a 130 frame is gear selection. >>>> If you plan to use say, a 42 or 44 chainring you might have trouble with >>>> chainstay clearance. >>>> >>>> -- 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 post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
