Re: Ammeter

Posted by DavidPackard On 2024/5/25 22:14:06

Jimmyk

In the ’54 shop manual, section XXI, there is mention of 900 rpm for the Delco equipment, and 920 rpm for Autolite equipped cars. Those values are the expectations for the reverse current relay (aka cut-out relay) to close, meaning the generator is ‘on-line’. I would expect ‘high idle’ is a term that means the system is operating with the generator ‘on-line’, plus a few hundred rpm of margin. You can also search for this rpm, because once the relay is closed, the system is up to temperature, and the battery is fully charged (or close to it), the voltage regulator should be in the voltage regulation mode. That is additional rpm does not result in an increase in voltage. My bet is 1200 rpm will do. A word of caution, in that most of the generator/regulator voltage specifications are for a system at normal operating temperature.

dp