Originally Posted by
John E
You may also want to consider converting from 2x5 to 3x7. You could keep the friction shift, and possibly the derailleurs, as well.
When I converted the PKN-10 from 2x6 to 3x7, all I changed was the crankset (122mm BCD to 110+74mm BCD) and spindle.
What parts did you switch in? I have PKN10 myself, (i think you even posted in my thread about it), so I'm interested in keeping this thing on the road for a while, but French bike replacement parts are getting somewhat hard to find...