OK, As said, 'twas a good idea and had a few ways I thought might work.Good stuff. I'd be tempted to put a shroud on that switch to stop it getting knocked on accidently though.
I understand that modern alternators have temperature protection and will throttle down their output if they get overheated?Whilst an alternator may deliver 70A at tickover isn't there a distinct possibility that it will get pretty hot doing doing so at such low rpm?
I seem to remember seeing a video from Sterling Power warning of this.
Ran the engine for a short time ....I agree about alternator gearing - at tickover an alternator will probably be doing a bit more than 1500 rpm.
But it will be well below the revs needed to be able to deliver anything near the rated capacity.
It'll be interesting to see what Wildebus' real life temperature readings are.
I am not a fan of doing what I just did either it was purely an experiment to see the impact and effectiveness to do that if 'caught short' one day.A little less than I would get in 35 minutes running my generator. I think it’s about 21/22 months old now and just before I left Charlie I checked what it has done. 452 hours so far so it does get used lol. Will be run much less now I have the two Victron chargers installed.
I know this is nothing to do with alternator charging but gives a different option if, like me, you don’t like to idle the engine