Steve Lusardi wrote:
Richard,
Colin's overspeed problem started when he changed the speed of the
alternator. He needs to use an alternator that generates the required power
at the original alternator speed. He may have a Leece-Neville alternator,
but it is not the large magnet variety, if he has to spin it at 8K rpm.
Steve

OK - I've just looked at the military alternators and indeed some do
generate full power at a lowly 2500/3000 rpm. But they are pretty vast
bits of kit and will not readily mount on my engine. The work involved
to fit would immense. A small pulley for £10 and disconnect a wire is
a simple cost effective option. BTW my 240v AC alternator on the same
engine spins up to 14000 rpm quite happily.