Originally Posted by
Winfried
Do you know if it can be retrofitted to use a Nexus/Sturmey-Archer internal gear hub, which would 1) provide a wider gear range and 2) allow for a chain guard (pretty useful, considering the chain isn't sandwiched between the two wheels when folded)?
sorry I don't know
by the way I find that the gear range is quite good for the city with its
9/13/17T rear cog ... but it seems to me there is a kind of "hole" between the longest and medium gear ... if they could add a 4th sprocket so we could have sthg like 9/12/16/21 and a slightly bigger chainring it would be perfect to me !
oh and I know it s not what you are looking for but the K3 Plus has 9 speeds :
https://www.bikeforums.net/folding-b...isc-brake.html 