He has milled the cranks down from 175 mm to 153 mm. cheaper cranks means more material left. For those interested Tore has a gallery of his builds here
which part is milled down?
Tore preferes shorter cranks, so he takes old 175 mm and drills and taps new holes for the pedals at 153 mm and cuts of the excess material at the end.
@Belagerent started
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He has milled the cranks down from 175 mm to 153 mm. cheaper cranks means more material left.
For those interested Tore has a gallery of his builds here