Biggest generator / alternator put on a NHC 250?

[doghead]

Have you given up on the live pto powered generator idea?

 

[ke5eua]

Never, just have my inverter collecting dust right now and I'll end up putting it in before I source everything I need for the pto.

 

[tim292stro]

As long as the rotor resistance is equal or greater than the rotor resistance of the alternator which the regulator originally came from, it will be ok. Example: If the original rotor resistance is 6 ohms, but the new rotor resistance of which this same regulator is now going into is 3 ohms, it will be supplying double the power, and heat, and will quickly overload and fail...

Easily fixed with a judicious application of external resistance

I second Doghead on the idea of a PTO genset, so long as you can get the engine into a comfortable RPM range to support the power output (with gearing and whatnot). Since you're going with electronic control of your truck, you could roll-in an engine governor function - just saying.

 

[NDT]

View attachment 550917View attachment 550918View attachment 550919

The Mil 100 amp alternator is a fine, very reliable unit. I am surprised you are having trouble finding a regulator for it. I try to equip all my trucks with this set up, it is more reliable than the 60 amp unit.

 

[Suprman]

The truck is a 2011 rebuild with only a few miles past rebuild. The alt makes no power. I have a repair manual for the regulator it's just been so darn cold and snowy. I tried the voltage adjustment and checked contacts with no good results.

 

[74M35A2]

Easily fixed with a judicious application of external resistance

I second Doghead on the idea of a PTO genset, so long as you can get the engine into a comfortable RPM range to support the power output (with gearing and whatnot). Since you're going with electronic control of your truck, you could roll-in an engine governor function - just saying.

Should work. Size resistor appropriately regarding wattage.

I have no idea how the dual voltage units are constructed or work.