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Messages - hwew

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1
Other Slow Speed Diesels / Re: Kubota EA300
« on: April 19, 2020, 12:45:29 PM »
A Carrier specíd EA300. First time Iíve seen one. Very interesting. The cover plate has two lines on the bottom. Did the engine have an auxiliary oil tank, oil cooler or oil filter? I like what I see.


2
Other Slow Speed Diesels / Re: Kubota EA300
« on: April 17, 2020, 05:13:46 PM »
Ended up dropping it off at the shop to have the valve seat repair, new valves and valve guides installed and lapped, cylinder honed and new rings, as well as a new rod bearing. Now while that is getting built, I need to figure out what generator head to slap on the things. I wish I could find an 1800rpm 3kw 1ph 115v brushless head, any thoughts?


In your situation, I believe your thinking of using 120 volts I would buy a generator head that you can wire the field windings parallel for 120 only. This will allow you to run the generator at full output at 120 volts. And in your case, running the generator to 3500 watt limit should reduce heat and in turn lengthen the life of a generator head. If you can, try to get a head and fuse it to 30 amps at 120 volts. This setup should protect the engine from bogging down and in turn should prevent loss in frequency.

Here is a good option: If your interested, and canít find one, PM me and Iíll make a call.

Brushless/Capacitor regulated:  https://www.meccalte.com/downloads/S16W_HD.pdf

 S16W-105 would be a good size. (Slightly oversized)
At a power factor of .8 the head should be capable of putting out 3.92 Kw at 60 hertz.

Henry


3
Other Slow Speed Diesels / Re: Kubota EA300
« on: April 17, 2020, 05:51:24 AM »
Engine looks great! Is that a Centrifugal  Clutch on the output shaft?
If you can, please take a picture of the crank case access cover. Their were a few different ones used and Iím curious which one you have.

Henry

4
Other Slow Speed Diesels / Re: Kubota EA300
« on: April 17, 2020, 04:27:29 AM »
A 5000 watt head would be a good fit for the Kubota.

5
Other Slow Speed Diesels / Re: Kubota EA300
« on: April 17, 2020, 03:25:06 AM »
With as many corners being cut and trimmed in manufacturing nowdays, a slightly oversized generator head is not a bad idea.  you get better phase imbalance performance and cooler running of the generator gear.

Exactly, and you would probably pick up some efficiency going slightly larger.

For example:
The Markon BL105E generator head was rated at 4992 watts. It was used on the Next-Gen generators with the Kubota EA300 engine. This engine was able to run this generator head to put out 3500 watts.

Henry

6
Other Slow Speed Diesels / Re: Kubota EA300
« on: April 17, 2020, 02:43:49 AM »
Here is one,

http://www.nextgenerationpower.com/Info/Support/3-5Specs.pdf

http://www.nextgenerationpower.com/Info/Support/UCM1-35.pdf

 They would be the ones to talk on where to get the parts. Been knowing them for years. Good people to work with.
You might be able to get used parts from a worn out unit. And possibly a matching generator head that fits on the bracket.

http://www.nextgenerationpower.com/

Here is the portable unit thatís sold at Hardy Diesel.

https://www.hardydiesel.com/product/kubota-3-5-kw-micro-diesel-generator/

This info should give you some ideas.

Henry


7
Listeroid Engines / Re: What are you guys using for fuel tanks?
« on: March 20, 2020, 01:50:49 AM »
Yea, new drums of any type are expensive. I was looking for tanks and drums in the 5-10 gallon range. I used a 55 gallon drum once and it got to be too much to move when full. Not many good drums where I am I never seen 10 gallon drums either.

I do like the idea of Jerry cans. They would make good portable tanks. For Lister engines I would think they would look nice painted Lister green.

8
Listeroid Engines / Re: What are you guys using for fuel tanks?
« on: March 19, 2020, 02:34:39 PM »

9
Listeroid Engines / Re: What are you guys using for fuel tanks?
« on: March 19, 2020, 10:34:29 AM »
I use an oil reservoir used on hydraulic systems. Available in many sizes.
They are available in many shops and have the fill/drain ports already in place.

>> click picture to enlarge <<

Very nice setup indeed! With everything going on I missed replying about your setup. My apologies.

10
Listeroid Engines / Re: What are you guys using for fuel tanks?
« on: March 18, 2020, 09:40:43 PM »
If your not concerned about the tank being certified as a fuel tank this hydraulic tank Northern Tool might be something to consider.

https://www.northerntool.com/shop/tools/product_200746889_200746889

At one time I was looking into an air tank from surplus center. Need to weld a fill neck on the tank.

https://www.surpluscenter.com/Brands/Hoosier-Tank/6-31-Gallon-Mobile-Air-Tank-4-1754.axd

I prefer a metal tank over plastic plastic fuel tanks but some people like plastic tanks.

https://www.tank-depot.com/productdetails.aspx?part=A-SP0006-FUWB

Henry

11
Listeroid Engines / Re: What are you guys using for fuel tanks?
« on: March 17, 2020, 11:51:06 PM »
Hugh, thatís one tough fuel tank. I guess it would have no problem surviving a toss in the back of a pickup or rolling it down a driveway. Great fuel tank.

12
Listeroid Engines / Re: What are you guys using for fuel tanks?
« on: March 17, 2020, 08:21:59 PM »
Hi cujet,

I used Boyd Welding to build a tank about 7 or 8 years ago. They are located in Ocala, Florida.

It looks like they have the parts you need to build a tank.

It might be worth checking to see if they can build what you need. They might have one in stock to suit your needs.

Henry

https://fueltankparts.com/collections/custom-flanges-parts-adapters

https://fueltankparts.com/collections/universal-tanks?__utma=163955756.2103795900.1584475353.1584475353.1584475353.1&__utmb=163955756.4.9.1584475368397&__utmc=163955756&__utmx=-&__utmz=163955756.1584475353.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)&__utmv=-&__utmk=154399032

13
Changfa Engines / Re: AIr Cooled Chinese L186 Diesel Injector Pump R&R
« on: March 16, 2020, 06:00:21 PM »
I answered in Blue.


to help reduce stress caused by spinning loads that have high inertia.

This makes no sense to me at all.
The whole concept of CS listers is a large, heavy flywheel and slow speed. Some people put extra flywheels on to reduce flicker. If does not matter if it's the flywheel or rotating mass of the load, they have high inertia as do all of the traditional type generators like you want to use.  Never heard of anyone saying they cause " additional stress" ?  Additional to what exactly over any other load??
Any additional weight/mass causes additional stress.

Never heard of anyone complaining about inertia on a generator before. It's the lack of it that gives problems. Your partly right. Itís also dependent how fast an engine is able to respond to a load. Some generators have aluminum flywheels and they do just fine. Some Fairbanks Morse generators with  Wisconsin engines had aluminum flywheels.  That's what gives reactive power and why heavy engines with large flywheels like listers are so well thought of. It is in fact the best thing you can have on a generator.  It's what STOPS them bogging down when heavy loads are dumped on them and voltage sag which the engine then tends to over fuel on when the governor gives it everything to get the revs back up.
And trust me, These engines WILL over fuel when bogged down.  That's what causes stress not rotating mass!

I also strongly question the idea of using 2 head gaskets to reduce compression. Did I say I was going to use two head gaskets? Iím sorry I was not detail enough. I was referring to a head gasket a couple of a thousands thicker if needed to get piston to head clearance correct. Iíve found some engines with not enough clearance. With the Clones itís probably best to check clearance to make sure itís within spec.  That is widely known in engineering/ mechanical circles to be hackery and a very bad practice. No idea why you would want to reduce compression on a diesel? Would only make for harder starting for one thing and have great potential for poorer combustion... particularly if you were thinking of burning veg, Bio or WMO.  They are all harder to light off and the more compression the better.

Also Gaskets are meant for sealing, not adding length to Cylinders. need to add or delete cylinder length by gasket size to get piston to head clearance correct.

If you want to reduce the speed of an engine then you have to derate the power as well. What engine are you intending to run? Your correct, yes you have to derate the engine to operate at a lower speed.
An ST 10 is an over sized generator for a 178 to a 186 so you would want to be more concerned about limiting the load on the head to stop  stressing the engine rather than the rotating mass. Did you read that Iím hoping to get 2400 watts continuous to 3600  watts surge? 
In any case if you are belt driving the head there is an amount of slip and cushioning in the belt so really not sure what you are concerned about?? Read about my concerns in the very beginning of my post. We all know the Chinese clones have a history of failure in one from or another. Is it too much to make sure the engines tolerances are within spec? One thing I try to avoid is guessing.

Weren't you all Gung ho about some Briggs twin a while back on a generator and thought that was the best thing sliced bread? Does this have anything to do about this topic? What brought this up?
Seem to remember you wouldn't permit a less than glowing comment about it. It must of been some negative comment that someone wrote. Some people can be too abrasive and disrespectful when posting comments about a persons topic. Such behavior is frowned upon.
What happened to that thing?? Donít need it. Gave it to my brother to help him start his ST-7.5 generator project. Itís coming along fine.

Hope this helps clear things up.

By the way, I shipped the Briggs out last Friday.

14
Changfa Engines / Re: AIr Cooled Chinese L186 Diesel Injector Pump R&R
« on: March 16, 2020, 01:08:49 PM »
Iím more concerned about reducing stress on bearings, rods, crank, pistons... Since Iím going to be running the engine below 3100 or 2600 rpm. Iím thinking of a possibility of using the ST-10 head along with the heavy 8 groove pulleys. Iím hoping to get 2400 watts continuous to 3600  watts surge out of the unit. The engine will be spinning lots of inertia while working to keep it at a speed below max rated speed I want to reduce additional stress some. I remember reading in a Kohler/Hatz air cooled diesel engine service manual about 9 years ago. It mentioned that thicker head gaskets are available. Iím thinking that installing a thicker head gasket on engines with high inertia loads should help reduce stress caused by spinning loads that have high inertia at lower RPMís.

One good example of high inertia loads on a piece of power equipment is a small home owners gas powered wood chipper. It takes a long time to spin up to rated speed right after starting. And than the engine is subjected to constant abuse when pushing branches through and constantly slowing down the engine below itís running speed. This is hard on any engine.

15
Changfa Engines / Re: AIr Cooled Chinese L186 Diesel Injector Pump R&R
« on: March 16, 2020, 01:38:54 AM »

Good catch hwew. I personally have only seen numbers in the 18 - 20 range.
(Except for the advanced computer controlled variable timing automotive diesel engines. VW, BMW, Merc)

Iíve seen numbers from 17 to 25.5 degrees BTDC on stationary diesels. Never 12 to 14.

To be safe, I would pull off the air shroud and do a fuel spill test on the injector pump to see where the engine is timed. If itís at 21 shim the pump to 18 and give it a try. If it starts ok, runs good and seems to have good power without smoking try retarding it more. Eventually you will reach the point where you will notice loss of power, white smoke and possibly rough running. Iím curious, and want to check timing on one of my engines but I wonít be ready until the engine is mounted.

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