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Unusual Seat Stay

Old 04-09-24, 09:19 PM
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Unusual Seat Stay

Ciao,

does anyone know more about these seat stays? They appear unusually thick but flat? The frame is a German Schauff but it could also be a Swiss Mairag (Schauff bought Mairag at some point). The steel should be Columbus SL according to the internet and the frame sticker.

Thanks in advance!



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Old 04-09-24, 09:45 PM
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Columbus Air seat stays?
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Old 04-09-24, 10:17 PM
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Originally Posted by P!N20
Columbus Air seat stays?
That seems likely, or maybe normal stays made more "aero" using a vise.
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Old 04-10-24, 04:59 AM
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I think several brands used them in mid to late ‘80s. Bianchi had them on a model or two and I think the Bertoni frames they built had them. I think they’re just regular SLor Alle smashed a bit
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Old 04-10-24, 07:54 AM
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I've got two "non-aero" bikes with Columbus Air seat stays (Limongi and Sannino).
Never seen the tube with that seat lug finish but I guess it's possible.
I read somewhere that they were considered stiffer than round in the long dimension.
They should be somewhat wider on the front than the rear.
That's a nice Schauff!
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Old 04-12-24, 11:05 PM
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Thank you everyone. I never saw these kind of seatstays. I assumed that they might be for “aero” reasons but what threw me off was that the rest of the frame is not aero (external cables, non aero shifters).
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Old 04-13-24, 08:42 AM
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don't think the tubing brand has much to do with it. the builder just cuts the top of the stay on a diagonal or chamfer and then forms it over.

very simple and does not have the extra weight of a brazed in end piece.

/markp
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Old 04-13-24, 10:04 AM
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From a Columbus catalogue but I do not know which year.




Fig. 6 AIR seat stay.
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Old 04-14-24, 09:25 AM
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Hummer is that the seat stay or chain stay?
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Old 04-16-24, 09:31 AM
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Originally Posted by Bianchigirll
Hummer is that the seat stay or chain stay?
Figure 4, 5, and 6 posteriori verticali is vertical rear, so I think that is seat stay.

Figure 7, 8, 9, and 10 posteriori orizzontali is rear horizontal, so I think that is chain stay.
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