Hello all, I am fairly competent on bike mods & repairs but am struggling here.
I have fitted a 53 tooth chainring on my 9 spd Triple chainset on a Trek road bike. My smallest chainring is 30 teeth, so I need 23 teeth capacity on the derailleur. The current derailleur is a Sora triple but this only has 20 teeth capacity and worked fine on the std 50 teeth ring but not the 53T.
After some trials, the Sora will not work so keen to buy a new front derailleur but struggling to find what I need. I have emailed some of the main online cycle stores but no response. I would like to keep the 30T ring for climbing and the 53T for flat riding. The downtube is 35mm dia and a clamp on fixing.
Other people must be running similar set-ups and would appreciate any advice or help so i can get back on the road. Thanks in advance!
I have fitted a 53 tooth chainring on my 9 spd Triple chainset on a Trek road bike. My smallest chainring is 30 teeth, so I need 23 teeth capacity on the derailleur. The current derailleur is a Sora triple but this only has 20 teeth capacity and worked fine on the std 50 teeth ring but not the 53T.
After some trials, the Sora will not work so keen to buy a new front derailleur but struggling to find what I need. I have emailed some of the main online cycle stores but no response. I would like to keep the 30T ring for climbing and the 53T for flat riding. The downtube is 35mm dia and a clamp on fixing.
Other people must be running similar set-ups and would appreciate any advice or help so i can get back on the road. Thanks in advance!