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Heavy duty spec alternators????

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Re: Heavy duty spec alternators????

Postby DonaldNZ » Fri Jun 21, 2019 6:34 pm

Alternators require clean cold air rather than rocks small animals and mud, in extreme conditions I've ducted filtered ram air to them, fit a cheapee temperature gauge to it and when its getting hot say ~ 100- 110 degrees C as the stator varnish and enamel has different temperature capability depending on price and usually are good to ~ 120 degrees C. reduce the load, or install a resistor you can add via a switch in the field circuit. One aftermarket regulator [ balmar ] I've fitted in hot and marine units have a temperature sensor fitted to the alternator you can program the regulator to fold back [ reduce output ] automatically by an adjustable amount when they go over an adjustable temperature. They are not designed to be a trash pump. Some high end Bosch units are water cooled so they can operate in harsh conditions

I suggest if your starters are dying due to water then run a 2- 5 psi air pump into a tank and a tube into the starter brushes end so its kept at positive pressure and the tank will help if you submerge the starter in a hurry when hot. some old school starter run an intermediate bracket or plate with a seal at the drive end so they can run in a wet clutch. that may be an option.
DonaldNZ
Isuzu Junior
 
Posts: 91
Joined: Sun Dec 30, 2018 9:42 pm
Age: 53
Country: NZ
City: mainland
Vehicle: wizard ucs69 4jg2t electronic pump & 30-43le trans.
Extra trans cooler in series & before radiator trans cooler.
airlift airbags in rear springs running 5-25psi, so far worked a treat, no longer bottoms out with 5 people and gear and still doesn't rattle me one up and empty. Watch the us paddle switches as my first pair leak. I've air electric replacements yet to fit.

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