Showing posts with label svo. Show all posts
Showing posts with label svo. Show all posts

Wednesday, September 3, 2008

Moving to vegwerks.wordpress.com



Thanks for reading folks.

We tried out a few blog sites when the Vegwerks Blog started, and we've decided to stick with vegwerks.wordpress.com.

We'll see you there!

Friday, August 1, 2008

Biodiesel at the Renewable Energy Fair - Aug 9th Anchorage

REAP logoThe Renewable Energy Alaska Project is putting on their 3rd Annual Renewable Energy Fair Saturday August 9th, 11am-9pm at the Anchorage Parkstrip.

We will have a number of diesel vehicles running vegoil-SVO conversions for folks to check out, and will have a FREE introductory biodiesel and SVO seminar at 3pm. We've still got some spaces if you greasy drivers want to show off your rigs.

The fair itself is a great collection of renewable professionals and proponents from across the state, mixed in with great green vendors, scrumptious food and rocking tunes.

Daniel Lerch from the Post-Carbon Institute is the 5:15pm keynote speaker. "Daniel manages the Post Carbon Cities program, providing resources and assistance to local governments on peak oil and climate change. He is the author of Post Carbon Cities: Planning for Energy and Climate Uncertainty, the first major municipal guidebook on peak oil and global warming."

A big thank you goes out to the Knik Group Sierra Club for sponsoring our Alaska Biodiesel and SVO Network booth.

For those of you looking to make a day of it, other workshops include:

Noon:
Deborah Williams, The Role of Renewable Energy in Addressing Global Warming
Peter Crimp, Wood Energy in Alaska – Renewed Interest in an Old Standby
Marvin Kuentzel and RJ Vasser, Renewable Energy System Design Basics

1 pm:
Robin Richardson, Just One More Reason to Watch What We Eat… The Amazing Relationship Between Food and Energy
Steve Gilbert, Fire Island Wind Update
Eric Yould, Hydropower in Alaska

2 pm:
Mike Willmon, Electric Vehicle Technology
Maryellen Oman and Cynthia Wentworth, Commuter Rail… It’s Time Has Come
David Lockard, Alaska’s Near-term Geothermal Development Prospects

3 pm:
Will Taygan, Backyard Biodiesel
Andy Baker, Solar Hot Water for Homeowners and Businesses
Chris Rose, Renewable Energy Policy in Alaska: Successes and Challenges

4 pm:
Bill Leighty, Brining Alaska’s Large, Diverse, Stranded Renewables to Alaska and Global Markets as Hydrogen and Ammonia with Firming Storage
Larry Flowers, Wind Energy: an Alaskan Opportunity
Doug Johnson, Overview of Tidal and In-Stream Hydrokinetic Projects in Alaska

Veg On!

Friday, June 27, 2008

Tuning up Vegoil (SVO, WVO) Systems.

www.alaskavegoil.orgIt's been a fun couple of weeks. We've had a few folks bring in their not-fully functioning SVO trucks (first-time installations), providing us good puzzles to figure out and vegoil systems to improve.

We like to encourage do-it-yourself vegoil conversions. We'll sell you a kit at a discount, and give you free phone support installing it.

And if you get stuck, we're available to fix things.

Yep, here at Arctic Vegwerks, we keep busy. We teach biodiesel and SVO classes and seminars, sell and install vegoil systems, spend hours giving free phone consultations for our customers, and we fix those poorly running or unfinished WVO conversions.

We're available in 4 hour chunks of time, for $150 a pop. Both systems this week took two 4-hour blocks to finish up.

First was a nice, burly, and moderately complex 3-valve Plantdrive setup on a 95 F250 Ford Powerstroke. The 3rd valve switched between looping and returning to tank. All the hoses were finished, but the electrical hadn't been started. We installed the really truly amazing VOControl on the truck. It's not cheap, but it BLOWS the competition's controllers out of the water. It's a real computer, not just a timer. More on that later.

The second was a 1996 Dodge 2500 Cummins with a Greasecar setup. It was installed by a local mechanic about a year ago, and had never run well. The mechanic is a good one and his work was beautiful. But, it was his first SVO kit and he just followed the generic Greasecar instructions. Once again I was unimpressed by the Greasecar setup. Temps rarely hit 100F, the vegoil was being pulled first through the veg filter, then the diesel filter and the tank and lines were full of gunk. We drained the tank, added a flat-plate heat exchanger and completely rerouted the engine fuel hoses. On its maiden run the temps were pegged in the 160's, yeah!

Thinking about installing a system? Need a tune-up on your existing system? We offer a free initial consultation to any Alaskan.

Sunday, June 22, 2008

Vegwerks in the Anchorage Daily News.

vegwerks classRindy White from the Anchorage Daily News part together a great write-up on the Hands-On Homebrewing class I taught in Palmer last weekend. Page A4 of the Sunday paper no less!

Alaskans learn how to make their own fuel.
BIODIESEL: It's not easy, but the result is a $2 a gallon alternative.

PALMER -- Two bucks a gallon to make your own biodiesel sounds like a bargain compared to $5 to pump a gallon of gas or heating oil. But operating a processing plant in your garage might be more of a hobby than you're willing to take on.

I was also interviewed for the pickup truck story at the top of the front page of today's Sunday ADN. Check out the "ECO TRUCKS" part at the end:

Alaska's love affair with pickups sours.

The emails are already pouring in for another class, and the comments are piling up at the ADN website.

So here's some information for those FREQUENTLY ASKED QUESTIONS:

Check out the events page at www.AlaskaBiodiesel.org/events for upcoming classes.

I also offer private classes for groups of 5 or more. Email will@alaskabiodiesel.org to set one up.

See these blog entries for more information on: sustainable Alaska biodiesel, Alaska grown fuel, Alaskan fish oil biodiesel and Alaska's place in the food vs. fuel debate.

Read more about straight vegetable oil (SVO) conversions at www.AlaskaVegoil.org - using heat to thin the oil instead of removing the glycerin.

And of course you can join in the discussion at the Alaska Biodiesel and SVO yahoogroups email list.

Veg On!

Thursday, May 8, 2008

I adore biodieselSMARTER

biodieselSMARTERAll the information you need to home-brew biodiesel is floating somewhere out there on the internet. It's finding the right information with the angle you want that's difficult.

Issue number 6 of biodieselSMARTER showed up in my mailbox yesterday and I couldn't put it down. First of all, it's written by folks with sustainability in mind. The full-page ad inside the front cover reads "The greenest car you own? Mass transit. Try not to drive at all. Icebergs will float in your honor... Respect the Biodiesel." Nice.

In addition to the regular columns, this edition includes glycerin composting trials and horror stories of illegal glycerin dumping. There are articles on desert thriving moringa and snow-planted camelina as feedstock crops. Also in the mix are a couple of farm-scale case studies, a bicycle-powered reactor built by high school students, and a piece on PrairieFire Biofuels, which serves both the SVO and biodiesel scene in Madison, Wisconsin.

The camelina article is especially pertinent for us Alaskans. In fact, Hans Geier - the Delta Canola biodiesel farmer - sent me a small packet of camelina for a little test plot I've got going in the orchard. Much to my chagrin, Hans and some other local farmers have been really keen on blending unheated oils with diesel and/or other thinners. Interestingly, these Albertan farmers are doing exactly that, with locally grown and crushed off-spec canola. Although in general I'm not a proponent of blending, I'm glad to see biodieselSMARTER embracing the larger sustainable biodiesel-vegoil community.

Don't have a subscription yet? It's a little 'zine, but filled with quality information, and it's only TEN BUCKS for a year-long subscription.

Veg On!

Wednesday, May 7, 2008

37 degrees and light.

Chugiak-Eagle RiverYep, May 1st marks the start of the outdoor biodiesel brewing season. It's also the day we're supposed to take the studs off the tires, but since there was a big snowstorm the last few days of April the state is letting us keep them on until May 15th.

There's little bit of snow on the shady side of the house, and a few of the big dumb mosquitoes flying around. Thankfully their tiny, fast and numerous cousins haven't hatched yet.

It's only 37 degrees out, but I pulled the clear frying oil cubies out of their cardboard boxes and let them sit in the sun all day. They flowed smoothly out of the boxes and through the paint strainer into my 55 gallon drum. Although the little harbor freight clear water pump was a little slow moving the oil from the drum to the appleseed. This year's new addition is a refrigerator compressor that pulls some suction to prime the pump. That priming feature is a very, very nice addition.

I've got the first 2008 batch drying in an open top drum with a bubbler in it, but I don't know how much drying it will do in the wet, heavy, almost-freezing air.

I'm also just about out of the few hundred gallons of SVO (Straight Vegetable Oil) that I filtered for 2-tank SVO driving all winter. It's time to get busy!

Oh yeah, today I sent my $1.72 in taxes to the state for my April SVO use. I'll have to have a talk with my representative about personal-use exemptions. He lives a couple miles down the road, and Alaska is very familiar with subsistence and personal use issues.

All this and I'm working by the twilight at 11:00 pm.

Yep, May in Alaska.

Veg On!

Wednesday, April 23, 2008

Backyard Biodiesel Basics Class - May 14, 2008 - Palmer

backyard biodieselWednesday May 14, 2008 - 7pm

FREE at the APU Kellogg Campus, Spring Creek Farm, Palmer

Please join us for an evening lecture and demonstration. We will cover both biodiesel brewing and straight-vegetable-oil conversions. Seating is limited, so arrive early to guarantee your spot.

Backyard Biodiesel Basics is the first in a series of biodiesel and vegoil events and classes this summer. See the events page at AlaskaBiodiesel.org for more information.

This seminar is based on the biodiesel program offered at the Bioneers conference. Those folks who attended the session at Bioneers are encouraged to sign-up for the second class in this series, offered June 14th, where participants will be making their own batches of biodiesel.

Spring Creek Farm is located at 6404 N. Lossing Rd in Palmer, Alaska. From Anchorage take the Glenn Hwy past Palmer and turn LEFT on Farm Loop Road, after few driveways turn RIGHT at the Spring Creek Farm sign onto Lossing Road. Continue to the white farm buildings on your right.

Sponsored by Arctic Vegwerks and the Alaska Biodiesel and SVO Network, in cooperation with Alaska Pacific University.

Call Will Taygan at 907-688-5288 for more information.

Sunday, April 20, 2008

Earth Day biodiesel and SVO on AK radio.

akradio.org logoAK radio ran a nice 5 minute segment on Alaskans burning vegoil and biodiesel during their Earth Day program. You can download the entire 04/19/2008 program from the archives at akradio.org.

Here's the summary for the show:
April 22nd is Earth Day, and on this week's AK, we'll pay tribute to the planet. We'll learn about sustainable agriculture, and visit a hotel that runs on the same stuff you use to cook your French fries. Plus, recycling old Crocs, and figuring out which plastic bottles are safe, and which ones might land you in hot water. It's all on AK from the Alaska Public Radio Network.
If you're looking for just the biodiesel segment, a low-quality (32k mp3) version is available here.

Veg On!

Sunday, April 13, 2008

Dr. Diesel and Peanut Oil - Myth or Legend?

Ah yes, Rudolph Diesel's 1893 compression-ignition "diesel" engine was invented to run on peanut oil, so it's okay to burn old fryer grease in our diesels, right?

I've seen this peanut oil story published in books and spread widely across the internet. Unfortunately, the real history isn't as clear as all that.

Gerhard Knothe, one of the USDA's top biodiesel researchers, found passages in "Chemical Abstracts" 6:1984(1912) and 7:1605(1913) in which Dr. Diesel writes:
at the Paris exhibition in 1900 there was shown by the Otto Company a small diesel engine, which, at the request of the French government, ran on Arachide (earth-nut or pea-nut) oil, and worked so smoothly that only very few people were aware of it. The engine was constructed for using mineral oil and was then worked on vegetable oil without any alterations being made.
So yes, a early unmodified diesel engine did run on peanut oil, but it wasn't Dr. Diesel's first engine.

Veg On!

Monday, March 31, 2008

Which Truck Should I Get for a SVO (WVO, VegOil) Conversion?

Dodge Ram 2nd GenThe most popular post by far on the Vegwerks Blog is Which Diesel Should I Get for a SVO (WVO, VegOil) Conversion?

Not surprisingly, it's also the most common email (and phone call) question that I get.

So, loyal readers, here are my top three choices for SVO trucks:
  1. 1994-1998.5 Dodge Cummins 5.9l 2nd gen 12 valve
  2. 1989-1993 Dodge Cummins 5.9l 1st gen 12 valve
  3. 1983-1994 Ford International 6.9/7.3l pre-Powerstroke

Now, here's the details:

Straight Vegetable Oil (SVO), even when heated, is still thicker than diesel. You need a truck with an injection pump than can withstand the added stress of SVO.

The strongest injection pump out there out there is the Bosch inline P7100, found on 2nd generation 12 valve Dodge Cummins trucks.

The best SVO truck:
1994-1998.5 Dodge Cummins 5.9l 2nd gen 12 valve


Other good candidates for a vegoil conversion are pre-Powerstroke 6.9/7.3 Fords with the regular Stanadyne injection pumps and 1st generation 12 valve Dodges with the Bosch VE rotary pump. Personally, I convert a lot of VWs with the Bosch VE pump, and have good luck with them, so I would prefer a Dodge, but they are harder to find than the Fords. In early 1994 Ford made a turbodiesel version of the 7.3 IDI, it's the newest, most powerful of the old-style pre-Powerstroke engines.

Common, easier to convert diesel trucks:
1989-1993 Dodge Cummins 5.9l 1st gen 12 valve
1983-1994 Ford 6.9/7.3l IDI


Halfway through 1994 Ford switched from an Indirect Injection (IDI) engine to a Direct Injection (DI) system with a Hydraulic Electronic Unit Injection (HEUI), a type of Common-Rail system, instead of a regular mechanical injection pump. These are very common, but the fuel routing issues cause purge times to be almost 15 minutes with a standard conversion. With the extra modifications to reduce purge times, these can run vegoil very well, but may cost $1000-$2000 more.

Common diesels that may require more complex, expensive conversions:
1994.5-1997 Ford Powerstroke 7.3l 1st gen
1999-2003 Ford Powerstroke 7.3l 2nd gen


GMC/Chevy trucks have a very sensitive injection pump that is known to break when running straight vegetable oil. I don't recommend converting these trucks, although there are a few local GMC fanatics who are running SVO.

The Dodge VP44 is a radial-piston rotary pump, instead of the axial-piston VE rotary pump, and that makes a lot of difference. Basically, the VP44 is a sensitive pump that breaks easily on straight vegetable oil.

Not Recommended:
1982-2000 GMC/Chevy 6.2/6.5l
1998.5-2002 Dodge Cummins 5.9l 24 valve


Yeah, but what about the newer trucks? Ummmmm, they're newer. All have Direct Injection (DI) engines with some sort of common-rail injection system, and would require at least as much additional modifications as the 7.3l Powerstrokes. We can convert them, but consider converting them experimental and expensive.

And what about Isuzu, Toyota, International, and other early 80's trucks? Well, most of them are pretty good candidates, but info on the rare trucks is beyond the scope of this piece, although I've happily driven an old VW pickup for years on SVO.

Thursday, March 27, 2008

Grease Price Conspiracies.

Alaska Mill and FeedWith diesel prices going up, there's been a lot of interest from folks trying to save a buck with our Straight Vegetable Oil (SVO) systems. Amazingly, Anchorage has a SVO-friendly grease collection company, Alaska Mill and Feed. They have been selling SVO drivers 55 gallon drums of filtered, dewatered, used (sometimes heavily used) cooking oil, known on the commodities market as "Yellow Grease."

It's been priced at 75 cents a gallon for a few years, but recently they raised the price to $1.00 a gallon. I've heard rumblings in the local vegoil community that maybe Mill and Feed is just trying to squeeze us a little, since diesel prices are so high. This couldn't be further from the truth.

A quick check at the USDA's Agricultural Marketing Service's Bioenergy Portal leads us to the National Weekly Ag Energy Round-up. Yellow Grease is commanding an amazing 33 cents a pound on the open market.

Since Yellow Grease runs about 7.6 pounds per gallon, at 33 cents a pound, the market rate is just over $2.50 a gallon! Those 35 pound (about 4.5 gallon) cubies of old fryer oil are now worth $11.55, double what grease was selling for a year ago!

Even with shipping costs to the lower 48, Mill and Feed is losing money by selling grease at the low local price. Mark, the plant manager, has done a great job cleaning up their oil and keeping costs low for Alaskans. We're lucky to have such a great business supporting Alaska biofuels.

Wednesday, March 5, 2008

March 26th - Anchorage Biodiesel Night - Free!

Wednesday March 26th, 7-9pm at the Anchorage Museum, 7th Ave and A St. FREE!

Speakers and films sponsored by the Alaska Biodiesel and SVO Network: a Sierra Club Smart Energy Solution, SEAKsolutions Juneau, and Anchorage Mayor Begich's Office.
Biodiesel: What is it? Why is it so great? Where can I get it?

Join us for an evening with biofuels experts from across the state, and award-winning short documentary films. Tour operators, fleet managers and interested individuals are invited to explore practical options for a sustainable Alaska.

From fish oil and Alaskan Canola crops to local restaurant grease, Alaska's biodiesel and straight vegetable oil systems can displace a significant amount of diesel, save our communities from high fuel prices, reclaim wasted resources and reduce our carbon emissions.

Speakers include Will Taygan, Arctic Vegwerks - Chugiak and Anthony Destefano, SEAKsolutions - Juneau.

Films include the short "French Fries to Go" about Telluride's Granola Ayatollah of Canola, Charris Ford and his restaurant-grease powered Grassolean, and "Greasy Rider" a cross-country voyage powered by waste vegetable oil.
For more information contact the Knik Group Sierra Club at 907-276-4048 or check in with us a www.AlaskaVegoil.org.

Friday, February 29, 2008

How much does an Alaska Vegoil System cost?

www.alaskavegoil.orgEveryone wants to know HOW MUCH DOES IT COST? To run on used vegetable oil, that is. Well, it's really a case of penny wise, pound foolish - or, you get what you pay for. Our systems have bomb-proof components and lots and lots of heat to protect your injection pump in the Alaska winters.

Prices as of Feb 2008 for a 1981 Volkswagen Rabbit Diesel:

$450 Basic PlantDrive TTVTS kit includes:
    $150 Vegtherm Standard
    $215 VegMax Filter
    $89 1st - 3-port Hydraforce valve (option)
    Assorted wires/connectors/fittings

additional PlantDrive parts:
$89 2nd - 3-port Hydraforce valve
$125 HP-16 Hotplate with 3/8" fittings
$450 Heated 12 Gallon Trekker Poly Tank

other tank options:
    $209 HotFox with $0 existing tank
    $209 HotFox with ~$400 aluminum tank

$1114 + 15% Alaska shipping $167.10

$1281.10 PlantDrive subtotal - this is what we can sell you if you want to do-it-yourself.

$600 (rough estimate) fittings/electrical/hardware/hose/sealant/insulation/etc.

$1821.10 parts subtotal estimate

$650 labor for Alaska Standard install (about 2 1/2 days)

$2471.10 Installed estimate for the bomb-proof 4-season Alaska Standard system.

We can install a no-frills 3-season system for a substantial savings, but we recommend the Alaska Standard for our climate. Deluxe options are available (gauges/controllers/pre-heaters), but our basic components are rock-solid in the standard system.

Shipping discounts may be available for folks picking up at our Chugiak (Anchorage) location, especially if your shipping times are flexible.

Pickup trucks require some higher-flow components and additional labor, and will cost a few hundred dollars more.

Veg On!

Tuesday, February 19, 2008

Gasoline and Vegetable Oil Blends

I've had a few phone calls from Alaska folks really really wanting a cheap and easy solution to running vegetable oil. Most recently was a plan to run 90% raw Canola oil, straight from the farmer's press, which would be "treated" with 10% gasoline.

Here's the response I wrote:
Hmmm. It's my belief that if it were cheap and easy everyone would be doing it. My first thoughts are "There's no such thing as a free lunch" and "You get what you pay for."

Blending straight vegetable oil with gasoline (or diesel) and burning it directly in your diesel vehicle should be considered *very* experimental. Of course biodiesel folks often get nervous about running heated SVO, and the 2-tank heated veg folks can get skittish about running those unheated vegoil blends.

The closest I've gotten to blending is the time that I left my vegoil in the injection pump overnight (I forgot to purge). I did get the 81 VW pickup started at about 40 degrees - and it didn't cause any noticeable harm to the system - but it kicked and bucked quite a bit while thick black smoke poured out until it warmed up. I try to avoid running cold oil in a cold engine.

I do know of one guy who runs unheated 100% SVO in a early 80s VW pickup down in Moose Pass (or was it Cooper Landing?). He told me he just ran it in the summer months, and it worked well for him.

For the internet fanatics, "Diesel Secret Energy" is the most famous of the blending "miracles." They add their secret formula (mostly petroleum aromatics similar to paint thinner), some gas and some diesel, whip it up and call it good. The only person I know of in Alaska that bought the stuff, decided after he mixed it up that he wasn't about to put it into his tank.

Blending, however, does happen successfully. Probably the most economically significant Alaskan example is the big WWII era generators out in Dutch Harbor at the Unisea fish plant. There they blend in fish oil, in a 50-50 ratio. Of course those are old, tolerant engines.

As far as passenger vehicles go, all the studies I've read say that unheated vegoil in an unheated engine will cause bad things: ring/cylinder varnishing, injector coking. The older 1980s studies say this happens more with blends above 20% vegetable oil.

If you're planning on running unheated SVO or an unheated blend in an older, more tolerant engine, you just might get away with it. Be sure to test your crankcase oil, or at least change it often, as vegetable oil will polymerize and thicken your motor oil.

Needless to say, I do not recommend running unheated blends. But if you insist, tell us how it goes!

Veg On!

Friday, January 18, 2008

Book Review: Biodiesel Power

Yep, it's winter in Alaska and I'm getting caught up on my reading.

Although Lyle Estill's book Biodiesel Power is over two years old, it is still a very pertinent and inspiring slice of the American biodiesel movement.

Subtitled "The passion, the people and the politics of the next renewable fuel." I found it a great read that covers not only Estill's journey from backyard brewing to becoming a regional producer, but also the quickly evolving American biodiesel scene.

The other biodiesel history book out there is Biodiesel: Growing a New Energy Economy by Greg Pahl, which is also a pretty good read. It focuses on biodiesel in the global context, how biodiesel was developed and encouraged by universities and governments and how business is running with it.

There's almost no overlap between the two books, and frankly, Biodiesel Power is a bit more entertaining. Maybe it's because it targets folks like me: backyard brewers that give a damn, folks that want to create community, inspire, educate and generally make the world a better place. It's really a book about the grassroots biodiesel movement.

It's the first book I've read that is based around a blog. Estill's Energy Blog chronicles his biofuel journey and he uses past enties as a framework to build his book. (Now if only Girl Mark and Kumar Plocher would package their blog archives into a book form, we'd be set!)

One thing I really appreciate about Estill's book is the way he nods to the founders of the scene, and then moves on. He acknowledges Joshua Tickell's small-batch blender method in his first attempts at making biodiesel, and then gently drops the technique. (I, on the other hand, have railed mightily about the dangers of mixing sparking spinning blenders and poisonous explosive chemicals.) Estill even praises the much maligned FuelMeister, not for it's mediocre fuel-making abilities, but for the fact that it brought larger-scale brewing capabilities to the masses. (Today, I'd go for the BioPro if I needed a pre-built processor.)

Another aspect I like is the way Estill takes on the tougher questions, like sustainability, politics, policy, and the 900 pound gorilla of biodiesel: the National Biodiesel Board. The stress between the small commercial producers and the large agribusinesses is an especially good part.

Biodiesel Power is a history of the American biodiesel movement told through a personal history of veg-fueling. Read it! And yes, you can pre-order his new book: Small is Possible.

Veg On!

Wednesday, January 16, 2008

The Best SVO Fuel Line Routing Design?

Alaska Vegoil System Fuel Diagram

Hah! There's two big debates in routing your fuel lines for a SVO-WVO-Vegoil system. First, to loop or not to loop. Second, to add a vegoil lift lift pump or not. We loop and in general don't add a lift pump.

Not looping your veg return to the veg tank mirrors what most factory diesel system do, which is to return the diesel to the diesel tank. The benefit of a full-return system is that is minimizes diesel use, and purges any air you have in the system, avoiding the most common cause of poor performance and stalling (the other issue being a clogged filter).

Looping, however is what we do. Looping allows a gradual change from cold thin diesel to hot, almost as thin vegoil. It avoids the slug of cold vegoil that is inevitably sitting in the valve and the last few inches of unheated lines that are found in full-return system.

The looped system keeps circulating the heat up front, and allows us to backflush the veg filter with diesel. This backflush primes the supply valve and the few inches of unheated lines with diesel, preventing cold-weather clogging, and minimizing shock to the injection pump. There is no slug of cold vegoil, instead the heated diesel mixes with the vegoil/diesel blend in the purged supply lines, which then loops back again and mixes with the fully heated vegoil. The disadvantage of this system is that it uses a little extra diesel to purge the supply lines and uses the diesel left in the injection pump to blend into the loop.

To summarize: Looping is gentler on your injection pump and has better cold-weather properties. But, it doesn't purge air and it uses a bit more diesel in order to purge and thin the initial slug of vegoil.

Of course, we use a 12v Vegtherm inside the loop, so we can maximize heat gain, and offer a full backflush. The Vegtherm is shut off for diesel driving, so we're not lowering the lubricity of the diesel by unnecessarily heating it. Note that we use a Flat Plate Heat Exchanger (FPHE) on the veg side. Some folks create a longer loop into the FPHE, but that system won't allow a full backflush. Only a 12v heater, of which the Vegtherm is the SVO standard, allows in-loop heating and a full backflush.

Okay second debate: to lift pump or not!

Older VWs do not have separate lift pumps. So no. Older Mercedes do have lift pumps, but the stock diesel filter can be rerouted before the lift pump, so the lift pump can pull from either the veg or the diesel tank, through the respective filter, and then into pump and on to the engine. So no. Fords and Dodges can generally be re-routed as well.

Newer high-pressure systems need a highly-regulated fuel pressure. So in general, yes. The pump that works well is a FASS pump. It's guaranteed for 2 years on vegoil and has a 23 amp motor. This is not your standard pump, it's not even the standard FASS pump. If you're going to be converting a high-pressure (Pumpe-Düse or common-rail/CRD) system you will probably need one of these. An exception is the early Ford Powerstroke HEUI injection systems. In these, the stock filter cannot be rerouted, so Plantdrive.com provides a billet aluminum replacement filter "bypass" plug, and adds additional filters for both the veg and diesel sides. The good news is that you don't need the extra pump.

I've only had one conversion where the owner wanted a cheap lift pump. They were having starting problems, and their mechanic couldn't deal with the fuel line rerouting. We put on the cheapo $50 Solid-State Facet Pump (note: These have largely been replaced with their posi-flo pump). These should be considered disposable, but work. It should be noted that it ended being their glow plug relay, not fuel related at all.

Rerouting the lift pump allows the pump to work as it should, avoiding any chance of it pumping into a blocked valve (deadheading), and is cheaper since you don't need an extra pump. Furthermore, the veg is always flushed from the lift pump, as a separate lift pump needs to be heated, along with the rest of the veg fuel system. The benefit of adding an extra pump is that it keeps your stock system stock, making it easier for mechanic to work on, and provides a fully redundant fuel system.

We believe in robust yet economical vegoil systems. In most cases a looped return and rerouting of the stock lift pump provides the best option for Alaskan winters.

Veg On!

Thursday, January 10, 2008

The Almost Qualified Dealer License

Well, today I got a letter from the State of Alaska Department of Revenue. Surprisingly it included an official Qualified Dealer Motor Fuel License. It is unsigned, and under the address section it says "Biodiesel Refining for Personal Use."

Needless to say, I did not apply for a Qualified Dealer (Fuel Distributor) license.

Accompanying the License was a very nice letter from Jamie Taylor at the Department of Revenue. Here's some excerpts:

Enclosed is an Alaska Department of Revenue Motor Fuel License... This has been issued solely as an instrument for filling your Motor Fuel taxes. The license number... should appear in the "Qualified Dealer Number" box on your tax return.

Please note that this license does not enable you to act as a State of Alaska Motor Fuel Qualified Dealer.

Thank you for taking the initiative to report your taxable biodiesel refinement and use.

It's so refreshing to have helpful and reasonable folks at the tax department.

I do have the feeling that this is more for their benefit than mine, but now I can use the electronic payment system, since it requires a dealer number. I'll let you all know how it goes when this month's taxes are due.

Veg On!

Monday, January 7, 2008

Greasy Rider DVD - SVO and American Society

Greasy RiderI was pleasantly surprised after watching Joey Carey and JJ Beck's Greasy Rider DVD. Promoted as a documentary of a cross-country road trip where the filmmakers meet "fellow Greasecar drivers, friends and critics", I was expecting an extended Greasecar advertisement.

Although the film does feature Greasecar, it's not a film about their systems. It's not even really a film about the road trip. It's a film about how SVO fits into American society.

Folks burn SVO for environmental, political and economic reasons. This isn't a treehugging movie, or a how-to film. It's more of a lefty critique of our oil burning ways and their social implications. There's no preachy narrator, but rather the honest voices of the people: Noam Chomsky, Morgan Freeman, Tommy Chong, Yoko Ono, the founders of the four major kit companies and more. Vegoil is shown as one part of the solution, something we can do now.

But don't think this is just a film with talking heads. The producers put together a nice soundtrack and did a great job interspersing intense inteviews with bits of history, fabulous road-trip vistas, average joe reactions to their Greasecar, and chats with fellow SVO drivers.

I'm going to show it to my friends.

Veg On!

Friday, January 4, 2008

Sliding Home: A Near Perfect Primer on SVO.

Sliding Home Book"Sliding Home: A Complete Guide to Driving Your Diesel on Straight Vegetable Oil" by Ray Holan is perhaps the best $30 a prospective SVO-WVO-vegoil driver can spend.

It is over 300 pages of humorous easy-to-read vegoil information. I've read it cover-to-cover, twice.

Starting with Ray's (and his wife's) personal story of how he came to SVO - through a love of cars, renewable energy and biodiesel-related explosions; and continuing to walkthroughs of actual installations - it's an informative, enjoyable read.

It covers all the major kit companies, and a number of the smaller ones. It gives a short history of Dr. Diesel and his engines, and goes over the wide selection of diesels available in the North American market.

If you want to save your time and sanity and avoid wading through the myriad of internet opinions, this is the introductory book you need to read.

It is not a technical manual. Non-mechanics will love it for explaining how to run vegoil while avoiding jargon.

However, if you're looking for the technical aspects of vegoil and your fuel injection system, you should head straight for "The Edge of Veg" by Stephen Helbig, the only other SVO-centric book.

My only critique of "Sliding Home" is that it's a nice book, perhaps a bit too nice. It details all the kits and vehicles available, but leaves it up to you to choose the best one. At 300 plus pages, however, this is a small issue. Another issue, not really a critique, is the fact that it's a book. Great to read, but not necessarily the latest cutting edge information. It's not the book to design or install your system by. It's the book to understand all the craziness you're reading on the internet - the near perfect primer.

And, if you want opinions on the best kit or the easiest car to convert, just check out the Vegwerks Blog!

Veg On!

Wednesday, December 19, 2007

SEAKing biodiesel in Juneau.

Biofuels in Alaska is growing in fits and starts.

In Anchorage we've seen the AKPIRG feasibility study happen and then stall, and the WVO biobuilders group has come and gone. There is a small but growing group SVO/biodiesel enthusiasts linked by the Alaska Biodiesel and SVO Network.

Fairbanks has seen the creation of the Fairbanks Biodiesel Cooperative and some really neat WVO-based boilers in use (more on this later).

In Juneau, the Alaska Biofuels Alliance got things started a few years ago, but SEAKsolutions is the mover and shaker at the moment.

An organizing force behind SEAKsolutions is Anthony Destefano. Destefano, a diesel mechanic and biofuels professional is a veteran of the biodiesel-powered around-the-world EarthRace and a SVO-installer with Independent Biofuels.

They had a great write-up in the Juneau Empire, and are currently holding meetings in Juneau to create a biodiesel cooperative, and foster the Southeast Alaska biofuels scene.

Veg On!