I've just fitted two front derailleurs, a Sora to my road bike and a Deore to my mountain bike, and I've
had the same issue with both.
When I adjust the height according to the indicator tab, ie 1-2 mm above the chainring teeth, when I
then shift to the largest chain ring, the middle ring catches on the inside edge of the cage.
And not just slight rubbing, the chain cannot physically move as the teeh are wedged against the bottom
edge of the cage. Only by adjusting the height by at least 4-5 mm will the crank turn.
It seems as though either the cage is not wide enough, or the inside plate of the cage extends too far
down. Of course the third optiono is that I'm doing something wrong but I can't see what.
Any clues?
had the same issue with both.
When I adjust the height according to the indicator tab, ie 1-2 mm above the chainring teeth, when I
then shift to the largest chain ring, the middle ring catches on the inside edge of the cage.
And not just slight rubbing, the chain cannot physically move as the teeh are wedged against the bottom
edge of the cage. Only by adjusting the height by at least 4-5 mm will the crank turn.
It seems as though either the cage is not wide enough, or the inside plate of the cage extends too far
down. Of course the third optiono is that I'm doing something wrong but I can't see what.
Any clues?