Greetings,
I would like to convert my current triple, RX 100 crank to a 48-38 for cross. It has 130/74 bcd. I assume this is possible? The crank is stamped shimano sg E-52, E-42, E-30. I have never seen the "E" designation, but am aware the other numbers are teeth counts.

Thanks,
NFields

Any leads on used rings, this is a budget project and ebay didn't list any.