Originally Posted by
breadbin
I know a guy who had the same bike as mine and he got a magic gear of 37x14 to work. I have a 16t freewheel with a 38t chainring and it doesn't work. If I get a 39t should it work ok? According to the magic gear program thing it should but just checking.
is it the same size frame as well? provided the length of your chainstays is identical then yes, if 37x14 works then 39x16 should as well. as long as the total tooth count increases by 2's you are okay.. or you can use the 38 and get a halflink and that should work.
just know that chains stretch over time and not all chainrings are identical, so there's no guarantee of a perfect fit.