ERD of vintage Super Champion 650b rims?

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Jul 3, 2025, 6:06:05 AM7/3/25

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Does anyone happen to know the ERD of these vintage rims?

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Jul 3, 2025, 7:50:00 AM7/3/25

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Found it in the Spocalc sheet as "Wolber Model 58" at 574.0. I'll assume the ERD didn't change from the Super Champion to Wolber branding.

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