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Messages - veggie

Pages: [1] 2 3 ... 47
1
Changfa Engines / Re: How many Changfa's do you want ?
« on: December 01, 2021, 07:00:19 PM »
Quote from: Tanman on December 01, 2021, 04:23:33 AM
I just picked up a changchai 1100 with an st10 today for $550! Now I just have to figure out what to do with it!

Tanman,

Those things are monsters!
Make sure that there are no women or children nearby when you first start it.
The fear that is instilled by the engine noise causes them to break into tears and later causes nightmares  :o

2
Listeroid Engines / Re: Twin...SLOW SLOW speed....?
« on: December 01, 2021, 06:56:33 PM »
Quote from: Hugh Conway on December 01, 2021, 04:30:08 AM
BTW, I once removed the inspection door while running at very low speed. I can tell you that oil does get flung about quite a bit, even at low RPM............took me hours to get cleaned up!

Hugh,
That is useful information for us low speed runners.
Thanks very much for sacrificing one of your favourite T-shirts to get that info  ;D

cheers

3
Listeroid Engines / Re: Twin...SLOW SLOW speed....?
« on: November 30, 2021, 04:03:27 PM »

As mike suggested, the issue may be carbon buildup if you don't have enough cylinder head heat.
So.... find a way to build heat.
Do you use active cooling or heat-syphon?
A small12 volt circulating pump in the cooling circuit could overcome resistance caused by the addition of an inline thermostat. (Maybe 180f)
Many of us have modified the cooling water outlet flange at the cylinder heat to accept an automotive type thermostat.
Also, add a little load to the engine at that low speed. In fact, load it up as much as possible. Perhaps an alternator to charge the battery that powers the circulating pump plus some additional light bulbs until the engine is sufficiently loaded.
Then you may make enough heat to prevent carbon buildup.

veggie

4
Listeroid Engines / Re: Ashwamegh cooling project
« on: November 28, 2021, 03:39:40 PM »
Nice work,

Is there a thermostat in your system?
If so, how did you incorporate it?

Veggie

5
Changfa Engines / Re: Chang-chai and ST head, deal? Or no deal?
« on: November 23, 2021, 02:47:47 PM »

Runs very good !
Nice work.

Suggestion: an open air intake pointed upward is a dangerous arrangement for the engine.
I assume it's just temporary but be careful. Stuff a rag in it when not running.
A tiny piece of debris can mess things up  :)

My Changfa 195 leaked oil at the drain plug welds also. I had to remove it and get it brazed the same as you.

veggie

6
Listeroid Engines / Re: What factors make it durable?
« on: November 15, 2021, 06:54:30 PM »
Quote from: BruceM on October 30, 2021, 06:02:08 PM
I think sound is perhaps the best reason for picking a Lister CS type engine.  My Metro 6/1 Listeroid (splash only lube, 5 bolt head) has about 3500 hrs now.  It gets water/methanol under load now so I no longer have to decoke every few hundred hours. (The knocking used to tell me when.)   I'm careful to avoid light loads or idling, something I'd recommend a propane engine for.  I saw what some idling does during my home construction before I had my remote start/stop setup; the engine cokes up much faster.

BruceM,

If you are running propane do you need water injection at all ?
I was under the impression that propane leaves virtually zero carbon buildup in engines.

Cheers

7
Changfa Engines / Re: Slow rpm Chang fa?
« on: November 14, 2021, 04:33:47 PM »

Good points  38ac,

Slowing an engine can provide some benefits in the form of reduced noise, lower fuel consumption etc...
BUT, there is a point where inefficiencies become problematic.
If enough heat is not generated, incomplete burning and wet stacking can occur.
In the case of a changfa, low crankcase temperatures can prevent the evaporation of any light properties (fuel) that enter the oil past cold rings at startup.
An engine continuously running too slow may be over-cooled due to the cooling system being far to big for the HP being generated. If a thermostat is not added to the system to maintain good cylinder head temps, then inefficient combustion may present itself.

8
Changfa Engines / Re: Chang-chai and ST head, deal? Or no deal?
« on: November 09, 2021, 09:18:40 PM »

WOW !!  :o

Lucky that you stripped it down.
After a good cleanup and re-assembly it should be a good runner.
As mobileBob noted, parts are available easily for these engines.
AliExpress has lots of parts at good prices.



9
Changfa Engines / Re: Chang-chai and ST head, deal? Or no deal?
« on: November 08, 2021, 06:38:31 PM »

The spare brushes that came with my ST-5 are exactly 1 Inch long.


10
Listeroid Engines / Re: Pushrods
« on: November 02, 2021, 02:06:27 PM »

Strange, on my engine the push rods are the same length.

11
Changfa Engines / Re: Slow rpm Chang fa?
« on: November 01, 2021, 05:11:17 PM »
Here is the slow speed changfa.
It runs at 900 rpm and can pull up to 3kw electrical power.
https://www.youtube.com/watch?v=aOhg1Q1rd6E

My neighbour loved it ... and bought it.  :)

So yes, with a few modifications, the Changfa engines make good slow speed diesels.
I have seen many videos of these engines running in China as slow speed power plants.
Many on grain grinders and tractors.

Come to think of it, my neighbour asked if I would like to buy it back. ::)
Hmmm ... how could I sneak a 600 lb  bright green generator into the garage without my wife noticing  ;D

12
Listeroid Engines / Re: What factors make it durable?
« on: October 29, 2021, 06:39:14 PM »
Quote from: bigbad on October 29, 2021, 03:21:15 PM
What makes them so durable?  The mass of the block?  Slow speed?  Dual pulleys to even the load?

All of the above. Especially the slow speed and low horsepower.

13
Original Lister Cs Engines / Re: cooking oil setup
« on: October 27, 2021, 04:36:50 PM »
My unit is configured for WVO operation using a manual 3-way valve at the injector pump for switching between diesel and WVO.
Injector line is heated with a wrapped ni-chrome wire element and silicon heat tape which heats to 150f-170f.
A larger 25 gallon WVO tank is used for clean fuel storage and a hand pump is used to fill the Day Tank mounted on the wall above the engine.

[click pictures to enlarge]

14
Original Lister Cs Engines / Re: cooking oil setup
« on: October 24, 2021, 11:03:56 PM »

My system does not heat the house. I use the radiator heat to supplement my garage heat in winter.

15
Original Lister Cs Engines / Re: cooking oil setup
« on: October 24, 2021, 04:03:21 PM »

That is an excellent setup.
Do you use "settling" to clean and dewater the veg oil? or are you using a centrifuge?

Does the system heat a house or a shop?
What contribution to the overall building heat does it contribute.?
I'm estimating 13,000 btu/hr from the cooling and 9000 btu/hr from the exhaust.

Well done !

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