which one should i change?
Hi all. Currently, i have some issues with front derail. shiftings. Apparently, when i changed from largest chainring to smaller chainring, the chain will be sucked inside and stucked. This happened when the chain is at 3rd largest to largest cog. I know that my bike has some weird settings though. Here are some specs :-
STI : Durace 9-speed (double crankset)
BB : BB-5500
Crankset : It is a triple crankset(FC-5505) but without smallest chainring. The settting is 53t/39t
Front derail : FD-5504
Chain : CN-7701
Casette : CS-HG70-9 (13t-25t)
I tried to change the limit screws on the front derailleur but either it would get stucked inside the crankset or get dropped outside. One more problem that i`ve found is the chain is rubbing against the chainguard when the setting is smallest chainring with 3rd largest cog and above. The mechanic said it is normal but he has no idea how to solve this "chain-sucking" problem. I had no other choice but to read the manual and configure it by myself. Im just a newbie to road cycling and kinda confused. So, the question is, do i need to change any of these components? I thought of getting an Ultegra front derail(FD-6500) for double crank shifting. Or do i need to change the bottom bracket as im using the triple crankset compatible BB. The spindle length is 118.5mm. Im very confused and some guidance. Thanks for your guys time.