> I've copied this to a man who actually knows the real answer and it > will be interesting to see what he says :-). He said: Hi Rusl,yep did this for Bosch Australia in 88,10 N-m on their 85 amp alternator,ok for engines up to 1000 cc,had sychronous retification built in. But too expensive back then due to cost of electronics! _______________ 24 years ago. Nothing new under the sun. 10 N.m =3D 1 kg.m =3D 1 Watt per RPM. ie 1000 Watts at 1000 rpm and 10 kW at 10,000 RPM if it would work at those revs (DTTAH). I assume the comment about 1000cc motors related to use as a starter motor. Maybe not. Russell --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .