• Reckon it’ll be okay?

    Yes, it will be fine. DH bikes had 1" steerers in the olden days, as did the majority of tandems. At this point, I usually mention the skinny steel tubes which were good enough for Nelson Vails on his own, but by way of a change, here's a 1" steerer supporting both Vails and his tandem stoker (Leslie Barczewski?)

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