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Topics - veggie

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Listeroid Engines / Lubrication port beside the decompression lever.
« on: December 25, 2023, 04:40:40 PM »
Question regarding the little oil plug right beside the decompression lever on Lister and Listeroid engines.
Is it an access port or a lubrication port?
When are we supposed to drip oil into that plug hole ?

It looks like it would lubricate the cam bushing, but isn't that bearing splash lubricated ?

The manual says nothing bout this port  ???

Generators / ST3 Noise and vibration
« on: December 06, 2023, 02:44:50 AM »
I spoke too soon when I installed my new ST3 head.
When I test ran the unit (unloaded) it was quiet and smooth.
Then I tested it with a balanced 240 volt ac load. Again smooth and quiet.
So I thought all was good.

Well ... today I tested it with a 1200 watt resistive space heater on one leg and only a 75 watt light on the other leg.
The growling and vibration was so bad that I thought something had broken in my system !
Terrible vibration every time I unbalanced the two legs, but just fine when the power is balanced.
A] Is this normal for an ST3 (do they need a balanced load all time) ?
B] Can it be fixed ??


Here's some pictures.
The unit is wired for 230 volt and I am loading one leg more than the other when the vibrations and noise occurs.

Generators / Call for pictures and suggestions. New ST3 Install
« on: November 13, 2023, 03:50:22 AM »
Hi all,

I just installed a new ST-3 head that I had sitting in a crate for the last 10 years.
The wiring looked good and the windings are copper.
When I gave the system a test run (no load), the unit was surprisingly quiet compared to the 3600 rpm unit that I removed.
No screeching and electrical whining noises which both of my 3600 rpm heads made even when unloaded.

I now need to wire the head into my electrical system as two 120 volt outlets (one from each phase). That part is simple enough.
However, it is doubtful that the 4 open connections on the back of the junction box would pass north American electrical codes, so I'm
looking for ideas and pictures of what other members have done to re-wire, reconnect, or change the basic ST design,
Some people have replaced the metal box with a PVC "Scepter" j-box. Others use the stock metal j-box.

Please let me know what you did with yours, and send pictures if possible.
Here's what mine currently looks like....

<click picture to enlarge>

General Discussion / Does anyone have a Changfa R175 or R180 PDF manual?
« on: September 05, 2023, 05:27:18 PM »
Hi all,

I lost my paper manual for the Changfa (or other chinese brand) R175 diesel.
Does anyone have a PDF version of this manual ?


Changfa Engines / Need help with flywheel timing marks
« on: June 26, 2023, 10:00:41 PM »
Does anyone speak (or read) Manderin?
The flywheel on my Changfa 195 has 3 markings.
I would like to know what the markings mean so that I can confirm the injector timing.
The manual says to rotate the engine on the compression cycle until the "mark"  (does not say which mark) lines with the notch in the water hopper and that will equal the required 18 deg. BTC.

Well ... mine has 3 marks, and mine does not have a hopper cooler, it has a factory radiator with no notches or markings.  :-[

I have attached these pictures in case anyone can help identify the rotational degree values of these symbols.

<click on the pictures to enlarge>

Any one else having to adjust pushrod/rocker arm clearance seemingly too often ?
Mine seems to need clearances tightened up every 10 hours (Sometimes sooner ). I do keep the pushrod cups full of oil).
Possibly poor quality pushrod material ?


Generators / ST Generator Efficiency ?
« on: February 12, 2023, 06:28:37 PM »

Does anyone know what the average efficiency is for the ST style generators when running in the "sweet spot". The ST-3 in particular.
As I understand it, the newer design brushless 3600 rpm heads used on today's "screamers" are about 92%.
I was wondering if the ST heads fall in the same efficiency range.


Waste Motor Oil / Used Hydraulic Oil
« on: December 01, 2022, 04:05:11 PM »

Has anyone had any experience burning waste hydraulic oil (or a blend of gasoline and hydraulic)?
I came across a few forums where people said they were running it in their older diesel trucks.
I wondered if anyone has tried it in their stationary diesel.
Theoretically I would assume it's just a cleaner version of waste motor oil since there would be no combustion deposits or acid buildup.


Changfa Engines / New build - Changfa R175
« on: August 29, 2022, 08:33:21 PM »
New build almost finished.
A Changfa R175 coupled to a 4kw head.
(Max output is more like 2.5kw)

The unit has an external oil filter which added almost a liter to the oil capacity.
I suspect I can extend oil change intervals with this mod.
Also added is a throttle linear actuator which will allow future automation such as remote start/stop and throttle control.
You can see the actuator open the throttle just before the engine starts.
When the actuator is extended all the way to full stop, it sets the engine at 60hz speed. The max extension (60hz setting) is adjustable via a slotted mount at the back of the linear actuator

The small fuel tank is a temporary installation for testing purposes.
I only ran it for a few seconds because the cooling system has yet to be added.

Engines / Evaporative cooling question
« on: August 29, 2022, 08:25:27 PM »
On my latest project I was thinking of using and evaporative water tank for engine cooling. Just like the original Listers.
That project can be seen here ...

While they do take a long time to heat up, once near boiling they keep the engine at the optimal operating temperature.
And warm up time can be controlled by the size of the tank.
I will most likely use a pump for circulation rather than rely on thermosyphon, although that simplicity appeals to me also.
My question to all those who use an evaporation tank:...

Do you mix glycol to the water in your systems ?
And if so, does the glycol boil off with the water or does the mixture get slightly more concentrated as steam leaves the system?

Everything else / Heat sand to 400F
« on: July 21, 2022, 03:30:06 AM »
I'm looking for ideas.
I can only heat stored water to 212f, but sand can be heated to to 800 degrees and used as a thermal battery.
I don't want to go as high as 800 yet, but I would like to fill a steel tank (maybe 50 gallon size) an try to heat it to 400f.
Then insulate it just enough to still allow for heat to radiate for X number of hours.

Application: Run the lister for x hours to electrically heat up the sand to 400f.
Observe the system to see how long the system can heat the garage in winter.
Start engine .... heat sand ..... Start engine .... heat sand .....Start engine .... heat sand .....
Automate later.
Power the engine with waste oil.

How to electrically heat the sand to 400f ????
Basic water heating elements will probably burn up.
I can provide 2kw to 3kw of electricity at 120 volts or 240 volts.

Any ideas for an electrical device to heat fully heat several hundred pounds of sand ?    ???

General Discussion / Inline coolant thermostat
« on: July 14, 2022, 03:34:15 PM »

Does anyone know of a car (or other vehicle) that uses and "Inline" coolant thermostat?
Something that does not fit into the engine block, but instead mounts inline with the hoses.
The water jacket blanking plate on my R175 does not have the room to machine a port and flange connection for a conventional automotive thermostat/housing.

My other option would be to use a solenoid valve connected to a temperature switch/sensor.

Generators / Solid State AVR on an ST-3 Head - Any need for it ?
« on: May 08, 2022, 11:34:00 PM »
These voltage regulators are available all over EBay and Amazon for anywhere between $10 and $30.
Are they any good?
Are they even necessary?
I would think that sine wave conditioning would be a better product to push for the ST heads.
In any case, If any users found a benefit from installing a solid state AVR on an ST heat, please pipe in.
I have an ST-3 and I'm wondering if I should add an AVR ?

By the way ... what currenty controls the voltage on my ST head ? just the engine rpm?

GB160 AVR Automatic Voltage Regulator for Brush Single Phase ST Alternator
Product description
100% brand new and high quality.
GB-160 AVR(Automatic voltage regulator) is applicable to harmonic excitation, 1 phase brush generator.
It is suitable for ST series single phase110/220VACgenerator.
Made with flame retardant and heat resisting material, stable and reliable to use.
High precision, long service life.
Voltage regulation rate:;1.0%
Exciting voltage: 20-100VDC
Shunt current: 10A
Package weight: 274g (approx.)
Package List:
1 * Automatic Voltage Regulator

General Discussion / Microcogen Site Login Difficulties
« on: April 28, 2022, 10:20:13 PM »
The Microcogen site was updated.
Thanks MobileBob and Hwew.

I am unable to login and cannot get a message to the host in orde to advise of the issue.
I tried on various computers, but I get an Error message as soon as I click the Login button.

Anyone else having issues?

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