Thrive Off Grid

I dont think you are grasping the concept, it has an exhaust that is piped thru wall to an out door draft blower. This will be built into the outdoor generator system. A chimney draft will not be strong enough as this is a full blown engine grade gasifier. The hot water heater will be coil in circuit of the house hot water heater.


You are correct. I didn’t understand the venting. :slight_smile:


It would probably help if I could write more clear as well. :slight_smile:


MattR I think your name “Thrive Off Grid” says most all needed to know.

All of my true electrical wood-for-power is intentionally done Off-grid to my equipment/farm sheds.
Then no insurances, no certifications needed.
MY power. MY risks.
True off-gridders assume their own responsibilities. Want beholding to as few as possible. Limited by as few as possible.
Will not want hand holding; and want the lowest risk-management run-up costs folded-in as possible.

You will succeed as you keep refining down your user base to practical using people.
Steve unruh



given your recent experimental mood, I wanted to chime in with an idea that I’ve had kicking around for a while:

A diesel particulate filter (catalyst style), mounted relatively close to the gasifier outlet (before or after cyclone, not sure). Perhaps with a bypass path around it for cleanouts. Goal: evaluation for particulate reduction, but also potential for cracking of heavier compounds.

it’s something I’m going to experiment with soon, if no red flags appear.


Hi Matt,
Have you decided what teg modules you are going to use and found a good source for them? I want to invest some time this winter playing with a homebuilt assembly. I want some good ones but don’t want to get hosed on pricing.
Thanks, David


No not really, the best I found was on Alibaba and I still could not get pricing that would make it viable. However, Im leaving the options open to at least employing a couple hundred watts. That may be doable to supplement the genny power or supply its own power for automation.

Im going to focus on the battery technology, just have not had the time to work on it. But I will soon.


So Ive taken a more reserved approach with the hybrid system and scaled it down a bit. However it still packs a lot of features. I managed to cram the hot water heater, a single burner plate, the hybrid heater mode, dual reactor set up and steam reformer with a 1 gallon capacity. The hopper will hold roughly 1 1/2 cubic feet of fuel. Not quite a full 40 lb bag of pellets.

It has a foot print of 10" wide X 22" deep and the top of the hopper is 60 inches from the floor. It will have 7 inch forced air fan to distribute heat out in both engine or heater modes. The heat exchange fins probably wont make it on the production version unless we can get them laser cut. The first ones will probably have about half what I have shown here in the model.

This will have mild automation standard, (grate / hopper agitators) and then the full auto systems I current have developed but with out touch screen. Input will be single button input. It will change colors and pulse blink for interactive controls. Touch screen may come later if I can figure out where to put it.

Beta kits and full builds will be available after this first build. I hope to start building here in the next few weeks.

If successful, this will take the place of the stand alone systems and will better justify price point as it will double as a heater / cooking system. Much more marketable and stoves are getting more expensive so it will be on par with current market price points of systems of higher caliber.


So the concept has deepened!! Im going create a full product line of the VersaFire Gasifier/Pellet stove. This will be a different approach from previous systems. So instead of building the entire gasifier system complete with filtration, draft blower, etc. This will be done in modules; I will need to revamp the design just slightly so that it can except additional modules to directly bolt to it like Legos.

So for instance the VersaFire gasifier module will be the back bone of the system. It is just the basic gasifier portion with no filtration other than the cyclone / swirl burner. In a heating mode this will not be able to fully shed all its available heat. So I can then add on an additional heat exchange module in the same form factor with a forced air blower. Another version could offer a second or third hot plate or maybe a small griddle. Another option will be an oven with griddle with combined additional heat exchanger. Then there is the option where we could combine multiple stove units together for larger applications. Then you would have both heat and power on demand and also could potentially run larger engines.

Here is the first purpose built generator. I will be building this proto type starting hopefully tomorrow. This will be a more modest 1 kW output running an HF 79cc engine. The VersaFire shares the same exact reactor technology as the FPS system so we will see what range it has and if can run this tiny little engine with some de-tuning. If not I still have that turbo :fire: I plan to expand this to a full line of small generators ranging 1 to 2.5 kW DC output and then the larger versions will shift to AC power heads. Probably wont go much larger than the 400 cc as hopper fuel capacity will be an issue.


New cam installed and the machine is back up and running. Going run more test tonight and tomorrow and we go live at 2 pm on Sunday.


So the live demo went well!! I was able to point a camera at the machine and I dont think it even noticed!!! lol.

There was a point where something happened, automation either went too long before agitation or it was too much for what ever was going on inside reactor. The automated mixer control was a bit slow to recover but it did the job. The machine ran pretty solid after that. I had a 3 kW load on it the whole time. Two heaters plus the lights in the shop and anything else plugged in. So it was more like a tad bit more than 3 kW.

My cell has seen better days so video quality was not so good. But the live feed was successful in showing this machines stability and ease of use. I wish I would have shown the condesate drop from the dryers, I now know that if the second one drops anything this is a telling sign gas quality was not so good. If nothing drops and only condensate drops from the first one this is telling us we have made very good and powerful gas.

The best part I was able to capture the powerful sound of that Kohler V Twin. Sorry for my crazy dog :fire:


Hi Matt,
Cyclones are a pretty effective means of removing particulate
matter from the initial hot flow stream. Step 1. clean up the gas
with the cyclone before it gets to the critical, expensive, hard to find
or get parts for item.
Then your step 2, imho. Pepe


Ive found I dont need them pre cooler anymore. The coolers self clean when the system is working right so no need for them. The scrubber unit gets rid of all solid particulates that make it past this, along with any ready to drop soots and then the cyclone dryers whip out any remaining moisture from the scrubber unit. Those cyclones are very effective at this best Ive found in 8 years of development.

This filter system is for the most part maintenance free other than draining it. The marble bed Ive cleaned it out two times and it didnt really even need it in four months of testing.


Interesting clarifying statements that you’ve made here MattR.

For those never having been involved in it; it can be hard to understand the draconian dictates to put all into a ship-able, manufacturer-able, small footprint.
Something that will arrive and NOT be shipper/handling damaged. Requiring then much back and forth exchanged with re-supplied parts and labor allowances. Delayed system use gratification.
Not require can-make-mistakes, final assembly by uninitiated.
You’ve experienced and learned from these well. eh.

Understanding these then your system shape makes sense.
Using cyclones as final coolers/gas-washers understandable then too.
As much as I no longer use cyclones on my always spread out DIY systems there is no denying that they are the most compact way. PITA to design and fabricate. But hey. That’s your investment contribution to effectiveness.

Steve unruh


Dont forget I do have a CNC and I no longer roll cones. Those filters are just straight rolled cans, so they are fairly easy to make.

Yes if you were to get a close up of this machine, you will see how integrated it is from a manufacturing perspective. The geometry of this machine is shared over and over and over again vs older systems were just about every individual part was very unique. The comer vessels all have their own unique function but they all share the same physical geometry. This allows for one fixture system to build all of them. Same goes for the layered sections. This machine out of any is probably the closest to modern manufacturing level where it could be built with out hands on labor intensive set ups and so forth. The four pillar design eliminates the need to build an enclosure as the gasifier system itself becomes this structure. .Just add the panels. Plus these corners are thick aiding in the sound reduction.

The simple ideas are the hardest ones to come by :slight_smile:


And the most valuable.


Oliver Wendell Holmes Jr. is quoted as having said, “I would not give a fig for the simplicity this side of complexity, but I would give my life for the simplicity on the other side of complexity.”


Well the day has finally come, the first 2019 FPS is ready for its journey to its owner in Montana. Only four months over due all due to that hopper agitator. Now to update and get to work on the remaining 2019 FPS builds. There are three more to build two are kits going abroad and the very next one is going to Kentucky.

Many updates to make to the CAD models and then CNC code files updates. The next ones should go fairly smoothly now that everything is ironed out. This machine will set the foundation for many years of production. Up to this point there was only one year where I carried over a design unchanged. Even then I think there will still some minor changes on that one.

The FPS marks the beginning of commercializing the first production gasifier system since WWII. Most current production machines are still labor intensive hand set up custom builds. This machine is designed and ready for mechanized automated production systems. I could be wrong, but I have not seen any commercial available machine to this point. Not even my major competitor. For instance Ive worked on a machine that makes tool chest for Waterloo. This machine can take a very large roll of steel sheet, and fully stamp it, bend it and make all the spot welds to fully create a lower tool chest and do this in 14 seconds. Ive retooled a tire mount for a GM production line that can fully mount a tire on a rim and fully inflate to an exact pressure and do this every 17 seconds!!. This is the type of automated machine tools that could eventually reproduce the Flex Power System. It is designed specifically for this type of processing.

Now to move on to the VersaFire. I should have the foundation for the little DC genny just about complete this week. This is just the engine and generator set up. Once I have the mechanical foundation complete I will then add the filtering system, enclosure, mixer valve, system blower and then start working on its automated controls systems. :fire:


Congratulations Matt
That is a good looking system what a relief it must be to finish a prototype
Now to get paid and have no startup teething issues


Congradulations on your latest product gasification generator fuel supply /ect electric./ heat. Liveing the dream building products too sell on line, i agree with mike gibb, neat new looking design, good luck with your products too design and sell.