One of the product designers at Brompton did this to his 4-5 years ago, I think he used 9sp shimano cassette 12/13/14 rings and adapted his 2sp shifter.
Was really nice to have a little more gearing for marginally more weight.
@furious_tiles started
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One of the product designers at Brompton did this to his 4-5 years ago, I think he used 9sp shimano cassette 12/13/14 rings and adapted his 2sp shifter.
Was really nice to have a little more gearing for marginally more weight.