pumps
XS650 Junkie
As motorcycle riders and especially XS650 riders we all know about vibration. There is that sweet spot when everything is tuned together and the vibrations are at a minimum. Certain speeds or rpms. Below that or above that ,not so smooth. Here is a video that give a visual demonstration of how different objects become in tune. This is from a Harvard website. Or watch it on youtube. Kinda cool.
http://sciencedemonstrations.fas.ha...ram_name=indepth.html#a_icb_pagecontent341734
http://sciencedemonstrations.fas.ha...ram_name=indepth.html#a_icb_pagecontent341734
