I have a 2005 Giant TCR Comp 3 with new Mavic Ksyrium SLs. THe current Crankset is the TruVative Elita GXPCompact 36/50 with the TruVativ Giga X Drive BB. I've notice a dit of a wobble in the BB. I took it to the two bike shops I frequent and they bth gave me the sam bad news. It's common and there isn't realy anything that can be done. They both pulled it appart regreased it and retorqued it with minor improvement. I've been looking for a decent replacement but all new Shimano 105 components are for a 10 speed cassette, I have a 9.
1st question Will the Crankset for the 10 work?
2nd question If I get the crankset for the 10 speed, and a new 10 speed rear cassette do I also have to replace everything for that group, i.e. front/rear derailer, shifters?
And now for another question: I've been riding on the 36/50 for the past two years, most of what I am finding is a 39/53 crankset. Why would one be better/worse than the other?
Thanks in advance.