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dragonfly · Joined: 24 Jul 2008 Posts: 36 Location: Oceanside, CA

I have my old '69 Chevy 3/4T (purchased new in '69) that I removed the V8 gasser 350 ci and replaced it with a Perkins straight 6 354 ci. I'm going to convert it to WVO this spring. Question: does anyone have a working on board filtration system? What parts, pumps and filtration capacity? Drawings of said system? I'd like to put an large capacity (100 + gals) round aluminum in the bed near the cab.

SunWizard · Posted: Sat Dec 27, 2008 8:37 am Post subject:

I run my Dieselcraft CF onboard, see that thread here with pics and diagram:
http://www.burnveg.com/forum/viewtopic.php?t=4

(thread moved to filtering section.)
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coachgeo · Joined: 06 Mar 2008 Posts: 486 Location: North Texas

Sun...... am I right in that one of the Dieselcraft competitors in the oil (diesel motor oil) world has a slighty pressurized outer chamber, or maybe a vacuum on it or something.... not sure if it is to pull vapor out or to help push cleaned oil along back to the sump... butt hmmmm.... Wonder if it could be used to pull water vapor out for our purpose of a closed onboard CF system?

Would be nice to be runing the CF while driving instead of only when stopped.
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Life; It's all in the Balance

SunWizard · Posted: Sun Dec 28, 2008 5:27 pm Post subject:

WD8CDH · Joined: 27 May 2008 Posts: 103 Location: NY

coachgeo · Joined: 06 Mar 2008 Posts: 486 Location: North Texas

dragonfly · Joined: 24 Jul 2008 Posts: 36 Location: Oceanside, CA

My stationary filtration system is the SimpleCF and heat. There seems to be no choice in using the DieselCraft CF in a mobile system when it comes to taking water out of the WVO when on the road. Guess I'd better start looking at fabricating a CF bowl and 1/3 hp electric motor/Honda 1500 Watt portable generator as suggested by SunWizard. I can envision heating the oil with the block coolant water while driving and then maintaining the 170F temp via electric hot water heating elements all night. Might have to say put for two days to let the oil settle out, then drain off the junk. Anymore thoughts out there?

SunWizard · Posted: Wed Dec 31, 2008 12:20 am Post subject: Re: Mobile Filtration

dragonfly · Joined: 24 Jul 2008 Posts: 36 Location: Oceanside, CA

What I have read on this Forum, the DC doesn't de-water very well. I haven't seen any numbers indicating the ppm. I might suggesty the Sandy Brea Water test is a valid testing method. Are there any tests that show the ppm using the SB test or any other method for CF WVO using the DC unit? The DC was designed to CF engine oil and that's a very different ball game!

SunWizard · Posted: Wed Dec 31, 2008 9:44 am Post subject:

coachgeo · Joined: 06 Mar 2008 Posts: 486 Location: North Texas

Dragonfly..... not sure what your reading but somewhere your either missunderstanding or something.

There is nothing that has come along yet that dewaters as good, in a short amount of time as the hot oil flash/CF like the dieselcraft.

In fact it is close to saying that it is probably the best method for the money compared to any other method.

The test data seems to back it up.

Please do point out any post or threads that make you see it any different.
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Life; It's all in the Balance

WD8CDH · Joined: 27 May 2008 Posts: 103 Location: NY

Usually if a CF doesn't dewater well enough, either it had not been run for enough passes or oil with a lot of water had stayed in the corners or bottom of the tank and never made it thru the CF.
_________________
Ron Schroeder
WD8CDH
'85 MB 300DT 2 Tank
Since '81 former WVO conversions:
'83 240D
'80 Audi 4000D
'83 Isuzu Pup
'86 Golf
'76 Honda Civic with Kubota engine
Prior to the cars, several generators
Kubota Tractor

dragonfly · Joined: 24 Jul 2008 Posts: 36 Location: Oceanside, CA

Search on this forum resulted in this post by SunWizard on March 4/08 - DC CF works great - my filter and dewatering rig

"Interesting results for water reduction. #1= 708ppm, #2= 545ppm, #3=478ppm by Karl Fischer ASTM D6304.

It removed my suspended water, even with 1 pass, when I captured the output at shutdown. This shows the pan test is not detecting water below 545ppm. I ran 2 pan tests on each sample separated by several hours. #1 showed lots of bubbles. #2 and 3 had no bubbles. When I shutdown after 1 pass and captured the output, I tested the captured VO and it was very bad on the pan test (lots of crackles.) This showed it was removing the water by true centrifuge in the rotor, not by evaporative means (which could make the pan test not reliable.)"

SunWizard:
It would have bee interesting to know the water content of the RAW oil that was started with in order to get a bench mark. After the DC test #3, the best dewatering was 478 ppm. My RAW sample (bench mark) started with 675 ppm via the Sandy Brea Test then Simplecentrifuged at 150F+ at .5 gals/min that resulted in 75 ppm. This test was repeated just to be sure. Same results with another test. I think I'll stick with my Simple CF, if that the best the DC CF can do even after 3 passes. In a stationary filtration setup, I can see multiple passes to clean. My original question on the forum dealt with a mobile system. SunWizard did suggest the use of a small AC unit to power an electrical motor. Still thinking about that idea.

coachgeo · Joined: 06 Mar 2008 Posts: 486 Location: North Texas

I may be mistaken but I do not believe a motor driven spinning bowl "flow up/spill over" type centrifuge can operate efficently in a moving vehicle. In fact it may even be unsafe.

Bowl will experience sloshing of oil (changing levels of oil from one side to another) and other fluid dynamics that would :

one- make for ineffcient CFing.

two- have the CF bowl at an imbalanced environment often. Imballanced bowl spinning at high speed is alot of stress and if it breaks up, the thought of the resulting parts slung out as projectiles would make me [elmer fud voice] vewy vewy neauvious[/voice]

Ones designed like the DC Im thinking does not experience the sloshing etc., Im guessing this due to the pressurized nature?
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Life; It's all in the Balance

WD8CDH · Joined: 27 May 2008 Posts: 103 Location: NY

The moving vehicle will cause minimal sloshing. The CF will generate 500 to several thousand G's while acceleration, braking and cornering is under 1 G, a fraction of a percent. 1" bearings should easily handle the forces from a CF rotor since they can handle the forces of a multiple horsepower electric motor's rotor at 7,000 rpm.
_________________
Ron Schroeder
WD8CDH
'85 MB 300DT 2 Tank
Since '81 former WVO conversions:
'83 240D
'80 Audi 4000D
'83 Isuzu Pup
'86 Golf
'76 Honda Civic with Kubota engine
Prior to the cars, several generators
Kubota Tractor