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Messages - adhall

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31
Waste Vegetable Oil / Re: WVO Collection Site Sought
« on: December 01, 2008, 04:22:33 PM »
Low Gear:

I also have no experience with this either, but I recall seeing some images on a web site which pertain to it (of course, I can't find the link now ???).

What I saw was a 55 gallon drum, the kind with a removable head. A large hole was cut in the center of the head. An round air filter element (Ford 351 Windsor V8 would do) had been mounted underneath the head--held in place from below by the appropriate air filter cover. A metal ring was attached to the top side of the head, several inches tall and somewhat larger than the hole. And a metal cover was attached to the ring by a hinge.

The purpose of the air filter element was to pre-filter the oil to keep out the larger chunks. And that air filter element is relatively cheap (not to mention inexpensive  ;D). The purpose of the ring was to provide some extra volume to contain the oil as it was working its way through the filter.

I believe the barrel was emptied by pumping out through the bung in the head.

I hope this is reasonably clear.

If anyone else knows the web page I am referring to and can furnish the link, I would be grateful.

On the other hand, the State of Washington has installed some collection sites for WMO near where I live. They are very professional looking and I'm sure were built at great expense to the taxpayers. On the other hand, they may provide some ideas for you. I'll see if I can get some pictures.

Best regards,
Andy Hall

32
Listeroid Engines / Re: Adding listeroid to solar system - project thread
« on: December 01, 2008, 03:53:32 PM »
Neurot:

If I were putting any type of engine in my basement, I would be sure to install a couple of CO monitors. We have one in our house because we heat with a wood stove and I can confirm from direct experience that it works...

Best regards,
Andy Hall

33
General Discussion / Re: Air Filter/Silencer
« on: November 30, 2008, 05:05:55 PM »
McGyver:

The Solberg data sheet I linked above has flow ratings for "Piston" and "Blower Fan". The "Piston" ratings tend to be lower than the "Blower Fan" ratings, as you have already anticipated. Of course, this doesn't really tell you how much restriction there is. Maybe that web site has some pressure vs. flow graphs--haven't looked.

Best regards,
Andy Hall

34
General Discussion / Re: Air Filter/Silencer
« on: November 29, 2008, 10:06:46 PM »
Here is a link to a list various products in this particular family:

http://www.solbergmfg.com/View_Datasheet.asp?part_number=SFS_2-2

Choose your pick... ;)

By the way, "MPT" apparently means "Male Pipe Thread". Since the manufacturer is located in the U.S., it is probably safe to assume that pipe thread is "NPT".

Best regards,
Andy Hall


35
General Discussion / Re: New Lister Engine Gallery Site
« on: November 24, 2008, 01:50:48 AM »
Marcus,

Thanks for putting this together. I just created a gallery and uploaded a couple of pictures to it. It was easy to use and it worked without a hitch.

By the way, will you want any help to cover your costs?

Best regards,
Andy Hall

36
General Discussion / Re: Brand new lump of heavy metal
« on: November 17, 2008, 01:36:12 AM »
And if you want more details, check out the web site:

http://www.a1steam.com/

Best regards,
Andy Hall


37
Everything else / Re: Grid tie inverters, a million and one questions
« on: September 23, 2008, 05:54:29 AM »
Jens:

Actually, you get the same peak voltage no matter how you rectify the AC. (Approximately 1.414 times the nominal AC voltage.) Full wave rectification just gives you a pulsating DC voltage that is easier to filter. (More "bumps" per second.)

Best Regards,
Andy Hall

38
I found the infomation you seek on the Gates web site (www.gates.com). You will have to do some poking around to find the "K" series Micro-V belts, but I know I found it eventually. I've got the files somewhere, but they elude me temporarily...

Best regards,
Andy Hall

39
Generators / Re: getting rid of flicker
« on: August 16, 2008, 06:21:12 PM »
Cujet,

Well, then, I hope you will give it a try and pass along the results to the forum.

Best regards,
Andy Hall

40
Generators / Re: getting rid of flicker
« on: August 16, 2008, 04:27:04 AM »
Why not put a suitable resistor in series with the field coils and rig up a solid state switch (transistor, FET, IGBT, whatever) so that it shunts the field current around the resistor except during the power stroke? When the switch is conducting, the field current would be close to the "normal" level and when the switch is turned off, the field current would be reduced. You would arrange the timing so that the switch was off during the power stroke and on at all other times. That way you would reduce the output voltage during the power stroke and it would return to the normal value during the other three strokes. If you used a variable resistor, you could tweek it to the ideal value. You would probably have to add a capacitor to the field circuit to raise the average voltage since this whole arrangement will only tend to lower the output voltage.

One way to control the solid state switch would be with a Hall Effect sensor working off a magnet on the cam shaft.

If you really want to go "Old School" with mechanical contacts,  you would have to do some serious homework to find materials that would hold up under the conditions of high cycle rate, inductive load, and (relatively) high current.

Best regards,
Andy Hall

41
Engines / Re: how thick to pour concrete foundation
« on: July 29, 2008, 05:36:09 AM »
Rcavictim:

Here is a link with a picture:
http://en.wikipedia.org/wiki/Ecology_block

Dimensions are 2' x 2' x 6'. 24 cubic feet equals a weight of approximately 3200 lbs.

Note the rebar loop in the middle for lifting.

Redi-mix concrete suppliers make these using the concrete left in the mixer trucks when they return to the plant. Often you will see "cold joints" where a block was made from two or more incomplete pours.

Best regards,
Andy Hall

42
Generators / Re: Wondering which gen to buy or use.
« on: June 16, 2008, 04:05:25 AM »
Dusty,

If you want to get 240 V from your 208 V generator, you could use a buck/boot transformer to raise the voltage. They are commonly used for just this purpose. You should be able to get one from any commercial electrical supplier.

Best regards,
Andy Hall

43
General Discussion / Re: Coppermine
« on: May 26, 2008, 07:58:40 PM »
Andrew:

I sense you are tired of dealing with this subject, so I hope you will forgive me for beating it to death.

I understand that Coppermine is a seperate web site that you have no control over. Since it has (apparently) died, would it not be possible to link the Listerengine site to some other photo web site? It is nice to have the photos together in one place. I know I enjoyed browsing through them and have learned a lot in the process. It is difficult to do that when they are spread all over the Internet in different sites.

Best regards,
Andy Hall

44
Waste Motor Oil / Re: Interesting science experiment
« on: May 22, 2008, 01:56:36 AM »
Jens,

Here's a question for you: Was the bucket open to the air during that time period?

If so, I wonder if some sort of chemical reaction could be happening. It would be interesting to see what happens with a closed container.

Best regards,
Andy Hall

45
Original Lister Cs Engines / Re: Head off, injector out, questions.
« on: May 20, 2008, 04:35:56 AM »
Stan,

I think you are confusing gasoline and diesel engines.

First of all, the diesel has no throttle so there is relatively little vacuum developed during the intake stroke. And since there is no throttle, the diesel engine draws in the same amount of air with each intake stroke regardless of the power output (assuming constant speed) . This means that when running at less then full power, the diesel combustion chamber has excess air (oxygen) in it. So even if you were sucking extra air in during the intake stroke, how could this possibly do any harm? In other words, for a diesel, the concept of "fuel mixture" doesn't apply.

It's clear to me that what is really happening when the COV is in mid-position is that you are losing compressing by having air from inside the cylinder leaking out around the valve stem. It is this loss of compression that that causes the smoking.

Best regards,
Andy Hall

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