These discs look advanced for the time, large diameter with expansion slots for dealing with heat. I guess the Hurst calipers were what was available... MotoTec seems to be still in the disc business.
The guy in the picture, Tom Heyser, opened a cycle shop in the Washington DC suburbs in the 60’s. It’s still in business today. https://heysercycle.com/
The guy in the picture, Tom Heyser, opened a cycle shop in the Washington DC suburbs in the 60’s. It’s still in business today.
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Thank you! He looked interesting, caption did not mention him.
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