Don't know if this has been posted before. Some of the info I have seen before, but if you fallow the thread there is info I have never seen before. I found it interesting, but it may be old news as far as I know. http://forum.thinkbike.co.za/showthread.php?p=282143 (http://forum.thinkbike.co.za/showthread.php?p=282143)
Later......