1989 Schwinn (Neu Citi) ashtabula BB size?
06-02-15, 07:26 AM
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Join Date: Oct 2014
Location: Huntsville, AL
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Bikes: '86 Raleigh Marathon (700c, SS/FG); '89 Schwinn Neu-Citi (26", 3-speed internal); '77 Schwinn LeTourII (27", magenta, 100% stock); '90s Gaspipe & Rattlecan (700c, Shimano CB hub).
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1989 Schwinn (Neu Citi) ashtabula BB size?
I am looking to overhaul the BB on my 1989 Schwinn Neu-Citi commuter, and am wondering if I need #64 or #66 bearing retainers.
Sheldon Brown and others note that "older Schwinn and Mongoose" use the 28TPI/#64 retainer sizing, and I've seen people claim 1946-1980 as the 28TPI years... but does anyone know if that would apply to a 1989 Schwinn? Or did they change over to the 24TPI standard once manufacturing shifted to Taiwan?
I suspect that any late 80s/early 90s Schwinns with one piece cranks would use the same size...
Just trying to save myself a few bucks by not having to order two sizes of bearings. Last time I did this, about a year ago, I used loose balls and it was a NIGHTMARE installation. Never again. The most obnoxious 4 hours of greasy fumbling in recent memory.
Sheldon Brown and others note that "older Schwinn and Mongoose" use the 28TPI/#64 retainer sizing, and I've seen people claim 1946-1980 as the 28TPI years... but does anyone know if that would apply to a 1989 Schwinn? Or did they change over to the 24TPI standard once manufacturing shifted to Taiwan?
I suspect that any late 80s/early 90s Schwinns with one piece cranks would use the same size...
Just trying to save myself a few bucks by not having to order two sizes of bearings. Last time I did this, about a year ago, I used loose balls and it was a NIGHTMARE installation. Never again. The most obnoxious 4 hours of greasy fumbling in recent memory.
Last edited by daddywarbucks; 06-02-15 at 11:48 AM.
06-03-15, 06:43 AM
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Join Date: Oct 2014
Location: Huntsville, AL
Posts: 9
Bikes: '86 Raleigh Marathon (700c, SS/FG); '89 Schwinn Neu-Citi (26", 3-speed internal); '77 Schwinn LeTourII (27", magenta, 100% stock); '90s Gaspipe & Rattlecan (700c, Shimano CB hub).
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06-03-15, 11:23 AM
#3
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I believe the Tange BR-12 are the highest quality retainers available that are a direct replacement for the original Schwinn and other standard #64 OPC bottom bracket bearing retainers, the difference is they have 12 balls instead of only 9: Tange BR 12 BMX Bottom Bracket Bearings New Vintage NIB | eBay
I learned this from a previous post by @dddd (thanks!) and can confirm they fit perfectly.
I learned this from a previous post by @dddd (thanks!) and can confirm they fit perfectly.
