I been getting bits together for while to build this up, Sora 3550 2 x 9 speed, I will possibly go down in large chain ring, 12 - 28 cassette, I have another wheel set to go on with Conti Town & country tyres 26 x 1.90, will tinkle away on it while finishing other projects, I have not purchased the cassette yet, should be soon though.