Swiss thread BB cup ID
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Hmm,Swiss thread- Stronglight, no ring, 8 sides, or Stonglight competition 2 flats, no ring.
That last photo is 2 flats, one ring and is Swiss.
It just couldn’t be easy could it? Lol.
That last photo is 2 flats, one ring and is Swiss.
It just couldn’t be easy could it? Lol.
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Sakae SR-SC 35 x 1 Swiss-threaded cups
SR-SC.L- Is this SR_Swiss Cup_Left? Also has SI which seems to stand for Swiss on other makes.
Picture from https://www.sscycleworks.com/compone...ackets-SR.html
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T.A Swiss-Threaded (35 x 1) cup
No markings except TA and 2 concentric rings. On a previous post here from jiangshi with a chart from Sutherland's it states that 2 rings are English thread. Did ss cycle works get it wrong?
Picture taken from https://sscycleworks.com/components/...ckets-t-a.html
Last edited by awac; 05-22-23 at 07:33 AM. Reason: note from previous post-chart
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Swiss bottom bracket taps:
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I have two Swiss bottom brackets (three counting contemporary IRD with Swiss threaded cups). One is Stronglight Competition ref.65 (cup and spindle), but that one is sitting on a bicycle right now, so no photos. The other one (below) is unknown. The only markings are letters GMA on the spindle, whatever that means. Overall, manufacturing quality is poor, both when it comes to the spindle and cups. Usable, but nothing special.
Spindle length is 126mm, distance between the bearing retainers is 52mm (centre to centre). Photos do not show the lockring. I have it somewhere, but need to find it
Spindle length is 126mm, distance between the bearing retainers is 52mm (centre to centre). Photos do not show the lockring. I have it somewhere, but need to find it
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I have two Swiss bottom brackets (three counting contemporary IRD with Swiss threaded cups). One is Stronglight Competition ref.65 (cup and spindle), but that one is sitting on a bicycle right now, so no photos. The other one (below) is unknown. The only markings are letters GMA on the spindle, whatever that means. Overall, manufacturing quality is poor, both when it comes to the spindle and cups. Usable, but nothing special.
Spindle length is 126mm, distance between the bearing retainers is 52mm (centre to centre). Photos do not show the lockring. I have it somewhere, but need to find it
Spindle length is 126mm, distance between the bearing retainers is 52mm (centre to centre). Photos do not show the lockring. I have it somewhere, but need to find it
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No markings, you could quite easily overlook them thinking Swiss thread would always have a marking, and without a thread gauge would just presume English thread if you observed a left hand thread. Moral always carry a thread gauge when bit hunting
..not easy on eBay through
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If it's a Peugeot-BB-made-by-Solida, six lines in a star centred on the axle hole mean english, a ring around the edge mean swiss.
They are otherwise unmarked.
That "GMA" adjustable looks as though it has a ring...does the fixed?
They are otherwise unmarked.
That "GMA" adjustable looks as though it has a ring...does the fixed?
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Yes, it's a circle in the middle of the spindle. It looked to me like a remainder of the location where metal was poured into the cast, but on closer inspection it could be a marking of some sort.
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I perhaps wasn't clear: the adjustable cup that goes with the GMA labelled axle - it looks to have a ring around its edge; does the fixed cup also have such a ring?
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No, there's no ring there. It's just where the thread starts. No markings whatsoever I could see on the cups. Just signs of machining and 35x1 Swiss thread. I need to find the lockring, but I don't recall any markings on it.
Last edited by VintageSteelEU; 07-03-23 at 11:04 AM.
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Shimano Swiss btm bkt
Sorry for the sketchy drawing!
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T.A Swiss-Threaded (35 x 1) cup
No markings except TA and 2 concentric rings. On a previous post here from jiangshi with a chart from Sutherland's it states that 2 rings are English thread. Did ss cycle works get it wrong?
Picture taken from https://sscycleworks.com/components/...ckets-t-a.html
From the Blackbird T.A. sight. One ring (like the French thread) G on fixed cup and the same X’s on lock ring edge, same a French threaded lock rings. Looks like SS cycle mixed up with an English threaded cup.
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George Turing had a touring bike with two-ring drivetrain and two-ring BB cups.
Three rings is a total circus IMHO...
<hides>
Three rings is a total circus IMHO...
<hides>