Yeah Im going to have to look inside. But that is what I was thinking about balance as well. The Predator 4375 does not have this though. This generator is definatly made by the same company that makes the Predator 4375. Its just built to WEN specs. The engine is the same engine as the Predator 224cc but this one has electric start. So far so good, it not a big deal with the 220 switch. One thing I need to figure out is if this effects both or only one leg in the 220 plug. I may wire this for 110 as I think this outlet will be able to carry more current rather than the standard 110 outlet on the unit.
3 Likes
240 is literally 2 120v legs. But out of phase with each other. The
The RV receptable on that machine is 30a of 120v power which is the equivalent of 240v 15a.
The two 120v 20a plugs allow for more power. the 240v 20a is most likely the 2 120v 20a hot wires with a neutral and a ground.
1 Like
Its not set up like that. It does not have an 30 amp RV plug. All it has is a single standard 110 outlet and the four pin 220 volt receptical. I bet that when you flip it to 110. the outlet is one leg and is cut off on the 220 plug leaving the other side on the 220 plug live. So one side of the 220 receptical is dead.
3 Likes
Yeah just went and got the instruction manual. Yeah in 110 mode the 110 outlet is active and the NEMA L14-30R output is only 110 volt. So one side is switched off.
2 Likes
I didn’t see what model you had, i just looked at the 4750 dual fuel on the and googled that. 
You have to look at the specs but it could be the case they did that but possibly they shut it off since that would probably be out of code and you will end up burning up a 220v motor if one wire was still live.
2 Likes
So woodgasssing the WEN today. lol only a day old and its converted to run on wood!! LOL.
Well it is chugging away out there along with the 9500. I dont think it will be able to sustain the gasifier solo though. But with the 9500 it hardly skips a beat. There are times it has to compete with the 9500 but once they are both stable they both just chug away.
I now have three chargers and am able to run them all at full power around 3 kW @ 60 amps this about the max we want to charger our batteries.
9 Likes
As much as I want to like the WEN and I do. I would not recomend this over the Predator. If you are looking at a 220 volt generatorn in this size range and dont need electric start the Predator is the better unit. If you need electric start then I guess it would not be an option. I can make the WEN work and dont need the 220 volt. Its nice its there though. I have rewired out 220 volt cable to branch into two 110 outlets in the shop. We can then run the WEN in 110 mode and plug two of the chagers into the 20 amp outlet and then run one off the 220 / 110 outlet. Or we can run all off this cable when pluged into the 220 volt outlets on the bigger generators. So quite versitile.
The WEN can run all charger but at 3 kW this is really pushing this little guy 
Note this is gasoline
6 Likes
so it begins. this is going to take some time to finance and build, but this is what i have so far. with the 9 in reactor what would u recommend as my dimensions for height on the combustion and reduction?? the wheel hub is going to be my reducer, most likely[Processing: 20230518_124517. going to weld solid between both hearth and reduction. found 12in flange on McMaster. Though the flange is 15in dia. 14in barrel width. Still getting things set up. Plasma able wont be ready till June. 
3 Likes
Both sections ( reduction / Hearth ) are 8 inches. You want your jets about 6 inches from the restriction. 8 inches should be good for the reduction, you may go a little deeper up to 10 inches.
When you post pictures use the upload. Its the 7th icon over in your tools at the top of the post editor. It the one with an arrow pointing up.
2 Likes
Matt, is it correct you are charging batt first? Going from ac-dc-ac?
Did you look at the little rangextenders from China? I think they might be a good option for you.
1 Like
You are still converting. Now you are converting AC to DC at that generator instead of at the battery bank. Now you have to carry that DC to the battery from the genertor. The conversion is still AC to DC and back to AC its better to run AC to the battery and then convert there instead of at the generator
Besides Ive already bougth and paid for my generator fleet. I cant afford to buy anymore. I will fix these units until they cant be fixed anymore.
5 Likes
A lot of people with Hydroelectric will do the same. Either 3 phase or AC electricity, fixed to DC at the battery bank for storage.
2 Likes
€ 201,05 22％ Off | 6KW Dubbele Koeling Elektrische Voertuig Range Extender 48V 60V 72V Auto Generator Mute Frequentie Conversie
https://a.aliexpress.com/_EGsbaBj
Just the first hit. Something like this saves a inverter from ac to dc. And maybe it is cheaper then an ac inverter. Overall efficiency might be a little better with one conversion missing.
But of course, use what is paid for first.
2 Likes
My option was to buy the predator 4375, and buy an electric start kit for it.
I used the 4375 with the Lincoln migpak 10…I was not satisfied with the heat of the weld, so moved over to the Predator 8750. Listening to the wild swings in RPM when striking arcs was a little unsettling. I am used to the Onan or Kohler chugging along at 1800 rpm. They never vary, just bark louder.
We built battery boxes and fuel tank holders for the 6k Marathon diesel generator.
I like the convenience of the Predators on gasoline. I am willing to pay for it.
I encourage you to continue your endeavors, running the Predators on wood/charcoal. It’s worth while.
I have to get the diesels back up and running full time. We simply have too much fuel available for them, to do anything else right now. That could change.
Thank you for the tip about unsticking the valves.
I am anxious to hear how the Aims chargers hold up.
We use Sigineer inverter/chargers or Outback charge controllers to make 48v.
The other option is to spin a DC motor and feed it through a diode to the bank.
Anyhow, I am encouraged by this thread.
6 Likes
When you and matt say fixed you mean like run a three phase ac motor then run through an inverter or converter to make it dc for battery storage- can you buy a ac to dc converter- how much they cosat at around 12.000 watts.THANKS. OR ware the cheap place to buy a 10-12 thousand watts converter AC too DC.THANKS
2 Likes
With the DIY hydro I was talking about, some people use a permanent magnet alternator and that generates 3 phase AC.
2 Likes
The alternator is still outputting AC? It is then rectifying to DC? Never heard of an alternator ouput in DC with out a convertion. You are actually loosing efficiency moving the DC plus all your cost in Cable.
3 Likes
Those range extenders are pretty laughable considering stuff like the Chevy Bolt is a nominal 344V.
I don’t know of a single EV beyond bikes that use 72V anymore. I fail to see how this would charge or extend the range of an EV but I have a feeling these are really for golf carts or something.
3 Likes
That would be sweet to build a Hybrid electric UTV / ATV or something. Electric drive with a small battery bank and then charge on demand on with this generator and gasifier system
4 Likes
Yeah I’d love a Dynamo system. Edison Motors is utilizing that very well with their retrofit systems. Brings new life to old heavy hauler trucks. Replace the I6 with an I4 Cat diesel generator that only spins to charge the buffer battery. Electric motor is connected to the old differential.
6 Likes