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Topics - veggie

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Everything else / Solar Inverter - Load sensing
« on: July 18, 2019, 02:44:22 PM »
I would like to be able to feed power from ten X 220w panels into my cabin electrical system to help offset demand from the grid powered electric baseboard heaters in winter. I am not interested in "net metering" or selling power back to the utility company. When all heaters are on at the same time the total load is 4kw.
That creates a mess of paperwork and meter changes which in the end will not be worth my effort.
I am wondering if anyone is aware of a grid tie inverter that modulates it's contribution to the home circuit according to the current entering the house main breaker panel from the utility.
The idea being that my solar panels would contribute to the loads when the heaters ( or other loads) are on, and scale back (or divert the AC to a dump load like a water heater) instead of back-feeding to the grid when there is low demand.
These type of inverters are readily available from non-approved (and probably poor quality) suppliers on Ebay.
They have a donut current sensor which clamps to the incoming grid wire at the breaker box which is wired back to the inverter for monitoring the incoming grid amperage. The unit throttles accordingly.
They also claim to have "island protection" which will shut down the inverter if grid power goes out. Thus preventing back feed during outages.

I am wondering if any North American brands are capable of output modulation or load diversion based on mains current draw.
Anyone else using solar to help reduce electrical loads without backfeeding the grid?.

I want to offset the power used by my baseboard heaters without back feeding the grid

Original Lister Cs Engines / Lots of Listers for sale
« on: June 23, 2019, 04:16:47 PM »

Lots of original Listers for sale here...
Getting it home may be an issue  :o


Engines / Head Bolt Torque - Changfa 175
« on: May 31, 2019, 10:56:09 PM »
Hi All,

I am replacing the head gasket on my Changfa 175 and I do not have any specs on the torque rating for the Nuts. The Head Nuts take a 19MM socket and the studs are 12 mm fine thread.
Any ideas or rule-of-thumb for a torque wrench setting on these nuts?


   [ click picture to enlarge ]

Changfa Engines / Do it Changfa Style
« on: May 07, 2019, 10:59:00 PM »

Listeroid Engines / Students visit a "high tech " assembly plant
« on: January 08, 2019, 05:23:46 PM »

If you teach new students this type of manufacturing, you will get more of .... this type of manufacturing.

Changfa Engines / Watch Changfa type engines get built
« on: December 10, 2018, 08:42:34 PM »

Other Fuels / Woodgas CHP System
« on: November 13, 2018, 11:07:09 PM »

This fellow did a really nice job on a CHP package. Makes lots of DC power plus usable heat... AND runs on wood.

Engines / Closed Loop Cooling (With Plate Exchanger)
« on: November 09, 2018, 05:11:13 AM »
Hi All,

I have a question...

My 2 cylinder Kubota generator project is almost complete.
I am now working on the cooling system.
My preference is to use a 30 plate heat exchanger that I have kicking around and run a loop from the engine to the plate-exchanger and back.
Then connect whatever I want to the other side of the exchanger to cool the engine water ( Fan/Radiator, floor loop, wall radiator, etc..)
Is it best to have an open (to atmosphere) system on the engine loop? or is it ok to run a closed sealed loop on the engine side?
I prefer to have it sealed so that  I don't need a reservoir/buffer tank, and I assume some type of expansion tank would be required like those used in hydronic heating systems.
Any thoughts, ideas, suggestions on this ?

The engine has it's own water pump and thermostat just like a car engine.


Changfa Engines / JD165 - First Run
« on: October 16, 2018, 11:32:51 PM »
Hi All,

I just finished my latest project.
A small JD165 air cooled diesel driving a little 2.3 KW head.
The engine makes 3.7HP @ 3000 rpm but I slowed it down to 2000 rpm.
The noise is a little more tolerable when the engine is not screaming.
Fully loaded I expect it to make approx. 1.5 KW which is ideal for powering a refrigerator, freezer, and some light in a outage.
These little engines use very little fuel.

Here is a link to the latest Fall release from Veggie Film Productions  ;D

PS: The exhaust pipe is temporary. I have not yet figured out a muffler arrangement.


Waste Vegetable Oil / WVO Centrifuge Design - thoughs ?
« on: June 18, 2018, 12:53:26 AM »
Hi All,

I have a design question as I fabricate a WVO cleaning centrifuge.
My initial design shown below incorporates a single tank with the "Fuge" mounted above.
The 26 liter tank will incorporate a sight level tube and a 1000 watt heating element.
The idea of the small tank is that I can process a Gerry Can at a time for small batches.
There will be a small gear pump mounted on the side of the tank which continually circulates the WVO
 up to the centrifuge where it gets cleaned and falls back to the tank.
Theoretically, the longer the unit runs, the more passes the WVO gets through the centrifuge.

Most users of this type of Fuge have a two tank system. One above which uses gravity to the feed the Fuge, and one below to collect the cleaned oil. Then they pump the cleaned back oil up to the original tank for another pass. This ensures 100% contact time for all the oil.

My Question:
After a lot of Youtube digging, I have not seen anyone use a single tank system like mine which makes me wonder...
Will ALL of the oil pass through the centrifuge 100% or will there be pockets of un-cleaned oil that never make the loops?
For me, the single tank system is a real space saver and I don't mind leaving the system running longer in order to get multiple passes though the fuge. But will ALL the oil get processed given a long enough run time?

Anyone with experience with this?


Tank = 7 Gal (26 liter)

Lister Market Place (things for Sale) / CHANGFA stub Shaft
« on: March 26, 2018, 09:55:53 PM »
Hi All,

I have 2 Changfa flywheel stub shafts for sale.
I had extras made when fabricating for my own unit.
Allows for the mounting of a variety of pulley types and sizes. (See example)

To the best of my knowledge they fit CHANGFA (and Changfa style like Laydong, JianDong, etc...)
Model: 185, 190, and maybe the 195.

Check your dimensions:
Outside diameter: 5.75"
Bolt Hole Size:       0.5"
Bolt Circle:             4.79"
Shaft Diameter:     1.375"
Shaft Length:        3"

Price: $80.00 US plus shipping.

PM me if interested.



Interesting project. A Listeroid converted to STEAM



Ever wonder how they raise boulders from a pit in India ??

(I think about it all the time  ;D   )

Using a Lister....  LOL


Generators / Any flicker when using a 3600 rpm head with a Roid ?
« on: December 05, 2017, 01:00:52 AM »
Hi All,

Is anyone running a house, shop, or backup power using a 3600 rpm head with a 550 - 650 rpm lister(oid) ?
I am wondering about flicker (or lack of it).
Intuitively it seems that flicker may be reduced or even eliminated when spinning a head at higher speeds.
I am thinking of swapping an 1800 rpm ST5 head for a 3600 rpm 4kw head... and flicker elimination would be a bonus. ::)
Does it make any difference ?


Engines / Fuel Rack Solenoid connection Question
« on: November 28, 2017, 03:08:44 PM »
Hi All,

I have a fuel rack solenoid that I wish to mount on the Listeroid as a shutdown device.
This was an "ebay special" and came with no manual or wiring directions.
The [PLUS] and [MINUS] terminals are obvious but it also has an [aux.] connection.

Can anyone tell me what this terminal is for and whether I need to connect to it?


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