Puno se pisalo o toj temi, probaj na ovim linkovima:
http://www.bjbikers.com/index.php?option=com_smf&Itemid=53&topic=51432.0
http://www.bjbikers.com/index.php?option=com_smf&Itemid=53&topic=22728.0
http://www.bjbikers.com/index.php?option=com_smf&Itemid=53&topic=37384.0