Xnke Posted June 4, 2012 Share Posted June 4, 2012 Ok, so I've been running various CS series alterators (CS130, then a CS140, then a CS140, then back to a CS130) because the bearings keep failing. My backup CS130 has now failed the bearings, and so my alternate alternator is going back on the car till the bearings in it fail too. I've been running the belt JUST tight enough to keep it from slipping...it still slips on startup and if the electrical load is increased suddenly. I know that this is not excessive belt tension, but it seems like that's the only thing it could be. Is there anything else to check for?? Is anyone else having this kind of problem? I've been using aluminum alternator pullys, that I machine on the lathe in the shop. I've tried a few different drive ratios, and have settled on a 2.150" OD pulley as having the best balance of output power. I don't have a stock pully to measure, does anyone know offhand what size it is? Quote Link to comment Share on other sites More sharing options...
username Posted July 14, 2012 Share Posted July 14, 2012 The cs series had a design problem, using only one main bearing. I went with a custom unit from Maniac Motors. Dual bearing and up to 220amps! Maniac electric motors. Quote Link to comment Share on other sites More sharing options...
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