Riles

Sydney/Danno XYZ - thks for advice and good website.

- flwd instructions to set up the Front Derailleur and with the Bike hanging everything was sweet - good shifts and no chain rub in any combinations.

Strange thing is when I get on the Bike, the chain get's jammed between the FD and the outer ring and doesn't shift up to the outer ring.. !!?

I cannot think of a reason why this only happens when I am on the Bike and not when I am shifting when the Bike is off the floor ?

What is the normal solution for the chain getting stuck between FD and the outer ring when shifting up ? shud I try moving the chain ring up a little higher than 1mm above the ring teeth ?

Any ideas ?

Thanks !

sydney

1mm clearance might be a bit tight. You using biopace or other non round chainrings?

roadfix

Perhaps under load the FD isn't pushing the chain far enough outward to engage the big ring. Try resetting your outer limit screw just a tad bit more and retension cable accordingly.

Riles

No it is a Shimano round chain ring.

I will try moving the FD up a little - it's annoying that it was perfect when it was off of the floor.... odd that it changes when I am riding it.

If moving it up doesn't help I will take it to a local dealer and let them sort it - it's a new Bike. This was last resort - I want to learn how to maintain & repair it myself.

Thanks for help !!

Riles

Fixer - I will give that a try too - Thanks !

cuda2k

Moving the FD up another mm or two should do the trick. I've had this happen to me more than once. You'd think I'd learn to give it a bit more of a comfortable distance but I guess not.

cydewaze

That happens to me all the time. On the stand != on the road.

DannoXYZ 

What do you mean the chain gets stuck between the FD & big-ring? The outer-cage doesn't touch the chain on that shift, so I wouldn't worry about raising the FD, it will slow down the shifting. Couple suggestions:

1. look at the front tip of the inner-cage. Depending upon the age/generation of the FD, it should have a bent-out tip. Shimano FDs have a molded bump on the inner-cage; this part pushes the chain up onto the big-ring. If your FD doesn't have that bump on the inner-cage at the tip, and it's parallel to the outer-cage, bend the tip to the outside yourself with some pliers. About 3-4mm should do. This speeds up the shift from the small/middle-ring up to the big-ring significantly.

2. Fixer's suggestion is good. The Park site tends to set up the FD's outer-limit screw a little tight so that you have minimal rub in the low-gears, but it may not move the FD out far enough for a quick shift. Unscrew the outer limit-screw about 1/2 to 1 full turn, no need to adjust cable-tension. Just be careful that the rear of the outer-cage doesn't run into the crank-arm.

3. shift deliberately. If you've got the outer limit-screw set properly, just crank on the lever intentionally all the way to max. Hold finger there until chain finishes shift. If you've unwound the outer-limit screw a little, you may find that you need to trim the FD back in a tiny bit after the shift.

4. when you shift, lighten up on the pedals so that there's no tension on the chain. Kinda like coasting and soft-pedaling. Your feet should be running slower than the road-speed so that you're barely pushing on the pedals at all.