Originally Posted by
waddo
Our planned purchase of a second hand CC for my wife fell through due to some weird gear shifting problem.
At worst a new cable, derailleur, and shifter is needed. Thats a $120 problem...at worst. Its more likely as simple as taking it to a shop for a tuneup and possibly a derailleur hanger adjustment or something incredibly minor.
Originally Posted by
waddo
New one is too expensive, so I am looking at the flat bar version. In Japan even that is US $1,400!
First she would prefer flat bars as thats what she rides now. Second, one chain ring (?) up front is better because she never shifts to the harder one any way.
So I am wondering if there would be any problem changing the chain ring from stock 42t to 34t which would match what she has now.
2017 Cooker 0 - Charge Bikes
Based on the link above, it looks like that crank can handle a smaller ring. The Charge has a 32t on that crank. Its a SRAM Truvativ E400 crank. The easiest way to determine chainring size is to know the BCD(bolt circle diameter) of the crank. I think the E400 is a 104/64 bcd(i didnt exactly look much). If that BCD is accurate, then you could slap a smaller ring without issue. Just lower the front derailleur too so it matches the new ring height.