1: How much weight can I load on the seat tube? (the Giant Halfway RS has a very long seat tube) I have a beam rack which has a capacity of 10kg. Could I add another to the same tube, or perhaps a Carradice bag at the top of the tube? Would this put too much strain on the tube?
2: I have a Shimano rear derailleur (RD2200) which I want to attach to another folder. The Shimano website says that it is rated at MAX/MIN 26/11. However, it came on a KHS folder (F20) with a 34/11 cassette. Unfortunately, I never put that bike through its paces, so I don't know if the RD could actually reach the 34 cog. Can there really be such a large difference between the recommended max capacity and the actual max capacity?