I'm just looking at spindle design and A/c bearings so I'm intrigued if you know of a cheap type.
"5200 zz z 2z ball bearing 10mm A/C" ebay aprox £16 for two... they might be to good to be true

just end up un loading one side!!!
och!! i hadnt thought of that... i hadnt decided if id just throw two in for good measure or pre-load them against each other
iv decided now!! cheers ross

According to SKF the distance between the CL of the bearings should be 3 to 3.5 time the shaft dia, so 12mm shaft = 36 to 42mm so a 100mm shaft should be way long enough.
i think you misunderstand, jonathan has a motor that has a 100mm long body so with a 100mm shaft there is no room left to add an A/C bearing and housing


yea iv seen those thread, they make interesing reading, one of those guys has his own ballancing machine!! to posh for me:)