Originally Posted by
John E
I can't tell from the pictures, but I'll bet the chainrings are not equal in size, but differ by 3 teeth, which, coupled with a 2-tooth development in back, would make a superb half-step gear progression.
The French purists will flame me for stating this, but the SunTour transmission is a significant step up from the stock Simplex.
Right, that is what makes sense, the half-step progression. Curious about the size of the bigger chainring too. Looks smallish. Definitely looking at the Suntour as an upgrade.