I'm repairing a friends road bike and he has an old suntour crankset on it. It must be from the early 80's. He complains that the chain doesn't go down onto the little ring. I confirmed this, the chain seems to fall between the two chainrings.
These chainrings are thicker in the body than in the teeth, but when they machined down the chainrings to make the teeth thinner, they did it on just one side, so the teeth are actually offset with respect to the center plane of the chainring. This bike is set up so that both chain rings face the same direction, and the teeth are offset closer to the frame. I am thinking that if I turn the small chainring around, this will bring the teeth closer to the big ring, and prevent the chain from slipping down between the two rings. Is this how it is supposed to be assembled?
These chainrings are thicker in the body than in the teeth, but when they machined down the chainrings to make the teeth thinner, they did it on just one side, so the teeth are actually offset with respect to the center plane of the chainring. This bike is set up so that both chain rings face the same direction, and the teeth are offset closer to the frame. I am thinking that if I turn the small chainring around, this will bring the teeth closer to the big ring, and prevent the chain from slipping down between the two rings. Is this how it is supposed to be assembled?