Originally Posted by sydney
I'd make sure the FD is positioned aligned and adjusted properly before dumpig alot of money.Certailny with a triple you need to pay attention to cog selection if your shifters have no trim. I've got several triple setups with no tim in the shifters and no issues with chain rub. too many people seemm to have no clue about what gear cobinations they should and shouldn't be using.
Agreed.
I tuned a friend's bike (50cm Trek 1000, Sora drivetrain) a few weeks back. With the way the front derailleur had been positioned by the shop, she could only use 4 gears per chainring without rubbing. I lowered the derailleur, angled it correctly, reset the cable tension, and now she can use 7 gears on the small chainring without rubbing, all the gears on the middle (though the extreme outside gears should be avoided anyway), and 7 gears on the big chainring. The gears that rub are the extreme cross-chain gears anyway, so shouldn't be used.
I'm not sure what frame size you have. Bikes with short chainstays can be hard to set up with triples (the chain needs to run a more extreme angle since the distance between BB and rear hub is shorter). This may be the case with an OCR3 - not sure.
If you're even a little bit mechanically inclined, go to
the front derailleur adjustment section on the Park Tool repair help website and follow the process from start to finish. Spending some time to get the front derailleur position correct might help solve your problems.