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I tend to agree with your guess based on my limited experience and the tests I have done so far. I plan on doing further testing and will report results.

ps. you don't "allow" the CF to use flash EV. It does what it does, no and, ifs, or butts.

quote:
Originally posted by welder:
quote:
Problem as SunW points out is the more you allow it to use flash Ev as the water removal method the more you leave components of water soluble acids and salts behind in the oil.



Despite my lack of experience, I have a theory that most water in WVO ran through CFs leaves the system via evaporation as the oil re-enters the tank at the top.

If I'm right then the fact that Suns' TDS tests indicate minimal contaminants in the WVO after processing would mean that that afer dehydration the hygroscopic crud is still heavier than WVO and these CFs are able to spin the crud out into the rotor quite well.

Just guessing...
 
Registered: 08 May 2005Reply With QuoteEdit or Delete MessageReport This Post
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I agree with you welder!!!!


Flyboyd8, Central NY

93 f250, 7.3 N/A, ext cab, >63K on veg (5-06 DIY conversion) FASS HDPP on Veg, Facet 59SV for diesel. 100 Gal. veg tank :-) >243K total. Two winters on veg with DIY system. converted. in 5-06, "NO Fancy Gizmo's", it came stock with all the power I need. Long Live the IDI!!!

Join the NRA today! Freedom was never free! thank a Vet!!
 
Location: At the flying field, or my 1000 yard. range | Registered: 05 April 2007Reply With QuoteEdit or Delete MessageReport This Post
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Evan,

"i dont use the cf at higher than 70psi."

You only run your spin clean at 70psi? Mine doesn't really start to hum until 80psi, and the difference between 80 and 100 sounds like a couple thousand RPM's. The difference in G forces applied would be much greater I would think. Why do you only run 70?

I learned today that I had been using a faulty gauge and had only been running 80psi. Now that I have a quality gauge and run at a true 100psi, it really sings!


Muleears
Hampton Roads, VA USA
87 MB 300D Turbo, 340K mi. WVO Blend
98 E300 Turbodiesel 188K mi.
2 tanked Greasecar+FPHE
Very tolerant wife

 
Registered: 22 May 2006Reply With QuoteEdit or Delete MessageReport This Post
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quote:
ps. you don't "allow" the CF to use flash EV. It does what it does, no and, ifs, or butts.



Actually, no Canola, that's not an immovable law of the physical universe.

For safety reasons, anyone using a heted CF system to dewater WVO (or any fluid) should either have the system vented to the atmosphere, or else have a vapour condenser to reduce steam pressure build up.

Plumbing the system in a pressure tight manner might cause a small steam explosion if the total volume of steam was great enough to overcome the CF, the plumbing, or the oil tank.

Although the danger would likely be much less than a serious industrial boiler explosion, it might happen in a part of the system where hot oil would be squirted out and scald someone.

Standing beside a hailine crack in a boiler when it lets go with 100 gallons of steam and boiling water at 1500 PSI would be a bad way to die. Getting my legs squirted with hot oil and steam under 400 PSI wouldn't be much fun either.

Basically, all I'm saying is that running a CF under pressure could be done safely, but that's pretty much beyond the scope of most greasers here (Fabricator probably could though).

I'm quite thankful to Sunwizard for showing us the usefullness of these CFs. If I ever get around to buying one, I'll plumb mine for maximum evaporation as the oil returns into the drum. I'll also use a steel cone bottom drum and draw from the cone outlet to guarantee that there are no untreated oil pockets.
 
Registered: 26 September 2005Reply With QuoteEdit or Delete MessageReport This Post
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quote:
I agree with you welder!!!!



Thanx, but so far I'm only operating on theory. It seems common sense enough, but there are often surprises in actually doing stuff.
 
Registered: 26 September 2005Reply With QuoteEdit or Delete MessageReport This Post
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If anyone is dumb enough to design a closed system, I suppose that is one way to not "allow" flash evaporation to work. Smile



quote:
Actually, no Canola, that's not an immovable law of the physical universe.

For safety reasons, anyone using a heted CF system to dewater WVO (or any fluid) should either have the system vented to the atmosphere, or else have a vapour condenser to reduce steam pressure build up.

Plumbing the system in a pressure tight manner might cause a small steam explosion if the total volume of steam was great enough to overcome the CF, the plumbing, or the oil tank.
 
Registered: 08 May 2005Reply With QuoteEdit or Delete MessageReport This Post
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quote:
If anyone is dumb enough to design a closed system, I suppose that is one way to not "allow" flash evaporation to work



Some people voted for Bush twice...
 
Registered: 26 September 2005Reply With QuoteEdit or Delete MessageReport This Post
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What is everyone using to get the centrifuge up to 100PSI? I bought the CF 4 months ago but could not find a pump under $200 that pumps up to 100PSI.


95 Safari RV 33'
Cummins 5.9L (230HP) B Series
 
Registered: 10 September 2006Reply With QuoteEdit or Delete MessageReport This Post
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quote:
Originally posted by tcr1016:
What is everyone using to get the centrifuge up to 100PSI? I bought the CF 4 months ago but could not find a pump under $200 that pumps up to 100PSI.


The description of my pump is on page 14 of this thread, cost was $60, motor was a used/ salvaged from a pressure washer, 2030 gallons spun so far and no decrease in performance of pump or CF.

happy researching.

Ken


Flyboyd8, Central NY

93 f250, 7.3 N/A, ext cab, >63K on veg (5-06 DIY conversion) FASS HDPP on Veg, Facet 59SV for diesel. 100 Gal. veg tank :-) >243K total. Two winters on veg with DIY system. converted. in 5-06, "NO Fancy Gizmo's", it came stock with all the power I need. Long Live the IDI!!!

Join the NRA today! Freedom was never free! thank a Vet!!
 
Location: At the flying field, or my 1000 yard. range | Registered: 05 April 2007Reply With QuoteEdit or Delete MessageReport This Post
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Junkyard Power steering pumps are very cheap. 80's acura and some honda are gear pumps. See the dieselcraft thread for lots of talk about pumps.


YVORMV - Your veg. oil results may vary, see www.burnveg.com/forum
95 Dodge Cummins 4x4 +87 300TD wagon Running on 2 tank WVO, 81 Mercedes 300D on V80/D20 blend
Low fossil house- 100% solar/wind power, 90% solar heated.
 
Location: N. Colorado | Registered: 31 August 2006Reply With QuoteEdit or Delete MessageReport This Post
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I once had the experience of seeing what a super heated high pressure stream leak can do; cuts through flesh like a light saber, very scary, very nasty.
quote:
Originally posted by welder:
quote:
ps. you don't "allow" the CF to use flash EV. It does what it does, no and, ifs, or butts.



Actually, no Canola, that's not an immovable law of the physical universe.

For safety reasons, anyone using a heted CF system to dewater WVO (or any fluid) should either have the system vented to the atmosphere, or else have a vapour condenser to reduce steam pressure build up.

Plumbing the system in a pressure tight manner might cause a small steam explosion if the total volume of steam was great enough to overcome the CF, the plumbing, or the oil tank.

Although the danger would likely be much less than a serious industrial boiler explosion, it might happen in a part of the system where hot oil would be squirted out and scald someone.

Standing beside a hailine crack in a boiler when it lets go with 100 gallons of steam and boiling water at 1500 PSI would be a bad way to die. Getting my legs squirted with hot oil and steam under 400 PSI wouldn't be much fun either.

Basically, all I'm saying is that running a CF under pressure could be done safely, but that's pretty much beyond the scope of most greasers here (Fabricator probably could though).

I'm quite thankful to Sunwizard for showing us the usefullness of these CFs. If I ever get around to buying one, I'll plumb mine for maximum evaporation as the oil returns into the drum. I'll also use a steel cone bottom drum and draw from the cone outlet to guarantee that there are no untreated oil pockets.


I confess that frequently it is beyond my capacity to follow the jumbled mix of thoughts in this and other threads. The best I can hope for is to not get beat up to badly for asking questions for which smarter folks have already been able to extract an answer.
 
Location: Oregon | Registered: 04 December 2007Reply With QuoteEdit or Delete MessageReport This Post
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quote:
The description of my pump is on page 14 of this thread, cost was $60, motor was a used/ salvaged from a pressure washer, 2030 gallons spun so far and no decrease in performance of pump or CF.



Good scrounging skills FlyBoyd8!

How do you regulate the pumps outlet pressure to a reasonably safe PSI?
 
Registered: 26 September 2005Reply With QuoteEdit or Delete MessageReport This Post
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My pump is an Oberdorfer 991R, close coupled to a GE 1/3hp 1750rpm carbonator motor. Mine easily produces 130+ psi. I know because I've been there (OOPS). I bought the pump and motor off Ebay and the coupler from Oberdorfer. Has worked flawlessly for 4 months.


Muleears
Hampton Roads, VA USA
87 MB 300D Turbo, 340K mi. WVO Blend
98 E300 Turbodiesel 188K mi.
2 tanked Greasecar+FPHE
Very tolerant wife

 
Registered: 22 May 2006Reply With QuoteEdit or Delete MessageReport This Post
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Also, did I miss something in my Spin Clean directions. I note that the Diesel Craft requires you to line up the rotor in a certain way. Does our Spin Clean require this? If so how, as I have never done it.


Muleears
Hampton Roads, VA USA
87 MB 300D Turbo, 340K mi. WVO Blend
98 E300 Turbodiesel 188K mi.
2 tanked Greasecar+FPHE
Very tolerant wife

 
Registered: 22 May 2006Reply With QuoteEdit or Delete MessageReport This Post
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quote:
Originally posted by Muleears:
Also, did I miss something in my Spin Clean directions. I note that the Diesel Craft requires you to line up the rotor in a certain way. Does our Spin Clean require this? If so how, as I have never done it.


Hi Cal,

I'd think so, since it balanced coupled in only one position. Does the rotor top have little squares of weights welded to it? Those are like the balance weights on a tire.

Sam


2002 F250 Vegistroke now with the new V3 module!
 
Location: Wyoming | Registered: 25 July 2006Reply With QuoteEdit or Delete MessageReport This Post
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Thanks for the answer Sam. No, mine doesn't have any weights and I have not noticed any alignment marks. The bowl in the SC is pretty simple. They are cheap also, only @$12 IIRC. Isn't the DC bowl more expensive? Maybe the SC bowl is light enough that even if not in perfect balance it won't cause too much vibration? Does the DC bowl have any ribs in it for reinforcement?


Muleears
Hampton Roads, VA USA
87 MB 300D Turbo, 340K mi. WVO Blend
98 E300 Turbodiesel 188K mi.
2 tanked Greasecar+FPHE
Very tolerant wife

 
Registered: 22 May 2006Reply With QuoteEdit or Delete MessageReport This Post
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quote:
Originally posted by SunWizard:
Junkyard Power steering pumps are very cheap. 80's acura and some honda are gear pumps. See the dieselcraft thread for lots of talk about pumps.


I found an online parts distributor that had pics of the parts and looked at several mid eighties honda/acura pumps until I could distinguish which ones were gear type pumps. the gear pumps have a distinctive shape to the casting on the back of the housing. It is like two circles overlapping. The cneters of those two circles coincide with the two shafts that mesh together in a gear pump. So go to any junk yard and find the mid eighties honda or acura of your choice and look to see if the pump looks like that. I got mine out of an 86 perlude. I talked to someone that was pretty sure he got his out of an 88 accord. Mine cost me 15 bucks with the high pressure hose included.


Bill

The more I learn, the more I realize just how much more I need to learn.
 
Location: Maryland, United States | Registered: 19 December 2006Reply With QuoteEdit or Delete MessageReport This Post
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quote:
Originally posted by Muleears:
Thanks for the answer Sam. No, mine doesn't have any weights and I have not noticed any alignment marks. The bowl in the SC is pretty simple. They are cheap also, only @$12 IIRC. Isn't the DC bowl more expensive?


I guess the DC bowl is more expensive, I believe it is nickel plated aluminum.

quote:
Maybe the SC bowl is light enough that even if not in perfect balance it won't cause too much vibration?


I'd think the small differences get amplified as the RPM's increase. Maybe each piece is machined to be balanced separately.

quote:
Does the DC bowl have any ribs in it for reinforcement?


Yes, it has ribs, or more appropriate, it is corrugated, around the top.

Sam


2002 F250 Vegistroke now with the new V3 module!
 
Location: Wyoming | Registered: 25 July 2006Reply With QuoteEdit or Delete MessageReport This Post
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Are the new DC bowls really nickel plated aluminum? Mine is the old ones with the zinc plated steel. The plating is slowly being eaten away by the veg oil. I wonder if that would cause the o-ring seal to leak when the plating is gone and whether the warranty covers it?

Mine has a a 1/4" square 1/16" thick weight welded onto the bowl for balance with an arrow stamped on it lining up with a mark on the bowl base.

I'd think the bowl and bowl base is balanced as a unit. If you buy a new bowl, can you potentially end up with an unbalanced setup?

Interesting that the Spin clean has no balance alignment marks. Does that mean that the bowl and base ( (which makes up the spinning assembly) are balanced individually? That's a good thing if true. What is Spin Clean's phone number?
 
Registered: 08 May 2005Reply With QuoteEdit or Delete MessageReport This Post
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Muleears and others...

quote:
i dont use the cf at higher than 70psi


when i first setup my SC i came across info that there was not much of a difference in using higher pressure. i filter every couple of months so i dont follow the these threads too closely. but is there a clear advantage to higher pressure and what temperature is recommended now?

thanks,

evna
 
Location: Montreal | Registered: 06 August 2005Reply With QuoteEdit or Delete MessageReport This Post
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