Originally Posted by mrisis
I do'nt know, I bought the Schwinn S-30 MTB in a box, assembled it myself & have had no problems with it.
7005 frame,
Sram 3.0 rear derailer,
Shimano front,
Sram 4.0 shifters.
Not the best but it works for me.

Thanks for your comments guys
U seem to have higher quality stuff than me. I don't think any of the department store bikes that Big-W sells here are aluminium... they are all some kind of thick steel, very thick steel. At least 4mm thickness around the fork tube.