Motorcycles

3-cylinder Harley fueled by waste tests its mettle

3-cylinder Harley fueled by waste tests its mettle
Even with its tractor engine, the Harley still sports a classic look
Even with its tractor engine, the Harley still sports a classic look
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Even with its tractor engine, the Harley still sports a classic look
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Even with its tractor engine, the Harley still sports a classic look
Alex Jennison is currently on a 1,200-mile ride down the western coast of the United States on this modified bike
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Alex Jennison is currently on a 1,200-mile ride down the western coast of the United States on this modified bike
After tearing apart the bike, the first step was to install a three-cylinder Kubota tractor engine that traditionally runs on diesel
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After tearing apart the bike, the first step was to install a three-cylinder Kubota tractor engine that traditionally runs on diesel
In addition to working on the bike from scratch, redesigning the engine to run on fry grease, and cramming it into the Harley frame, the team of students collaborated with UBC's 400-vehicle fleet operator to develop cold-climate-compatible biodiesel technology
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In addition to working on the bike from scratch, redesigning the engine to run on fry grease, and cramming it into the Harley frame, the team of students collaborated with UBC's 400-vehicle fleet operator to develop cold-climate-compatible biodiesel technology
Jennison claims that using the alternative fuel decreases CO2 emissions by a mammoth 74%
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Jennison claims that using the alternative fuel decreases CO2 emissions by a mammoth 74%
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"EVs are green, EVs are environmentally-friendly," blah, blah, blah … That may be true, but who needs a Tesla supercharger when you can simply fill your motorcycle with some leftover restaurant grease and happily chug along the road?

Well, it’s not exactly grease, but hey, it’s pretty close. Biodiesel, to be precise. And it’s not all motorcycles; it’s specifically this modified 1999 Harley-Davidson Heritage Softail. Why exactly? Simple: to prove that it works.

A team led by Alex Jennison, a 22 year-old engineering student from the University of British Columbia, came up with a brilliant solution for reducing carbon emissions from the university's heavy machinery, like gardening equipment, trucks, and other vehicles.

And what better way to demonstrate the solution than to install a tractor engine on an old Harley and run it on used vegetable oil?

This Bike Runs on French Fry Grease. Here’s Why It Matters.

And get this: the lad is currently on a 1,200-mile (1,931-km) ride down the western coast of the United States on this very bike. But why only a Harley? And why this particular 1999 Heritage Softail?

"I chose the 1999 Harley-Davidson because it is the last model to have the engine and gearbox separated instead of mated together," Jennison told Canadian automotive website Driving.

After tearing apart the bike, the first step was to install a three-cylinder Kubota tractor engine that traditionally runs on diesel. Kubota gifted the engine to Jennison and his project partners, to demonstrate that clean fuels are viable.

"Everybody modifies their Harley-Davidson motorbikes, personalizing them," he said. "The idea was to bridge the old and the new, doing something outrageous to an iconic motorcycle that everyone recognizes."

Jennison claims that using the alternative fuel decreases CO2 emissions by a mammoth 74%
Jennison claims that using the alternative fuel decreases CO2 emissions by a mammoth 74%

The exact engine specs aren’t revealed in Jennison’s YouTube videos, but our friends at VisorDown believe it could well be a 1,647cc D1703 motor with a peak power output of around 35 horsepower.

"After 12 months of scrambling at how to put a diesel tractor engine in a motorcycle (late nights, machining, welding, and begging for technical advice) – I’ve built a biodiesel-powered Harley Davidson from scratch. Not for profit. Not for show. But to prove a point: Clean fuels are viable today," reads Jennison’s LinkedIn post.

He continues, "Most university and municipal fleets still run on diesel, and heavy-duty electric vehicles still rely on materials like cobalt, mined by children, women, and men in the DRC, seven of whom die a week in collapsed mines. Copper – extracted by burning Amazon basin ecosystems to the ground."

Jennison explains that on campus, restaurants pay to have used vegetable oil in fryers hauled away. "You could take vegetable oil that is usually thrown away and put it through a chemical process to use it to power equipment so the UBC fleet could run on waste oil from its own cafeterias," he adds.

After tearing apart the bike, the first step was to install a three-cylinder Kubota tractor engine that traditionally runs on diesel
After tearing apart the bike, the first step was to install a three-cylinder Kubota tractor engine that traditionally runs on diesel

In addition to working on the bike from scratch, redesigning the engine to run on fry grease, and cramming it into the Harley frame, the team of students collaborated with UBC's 400-vehicle fleet operator to develop cold-climate-compatible biodiesel technology, which Jennison claims decreases CO2 emissions by a mammoth 74%!

That stat is the very reason this concept exists. To prove that there are greener and cleaner fuels than those which currently exist. That and the fact that EVs still rely on rare earth materials, whose sourcing still raises ethical concerns, including forced labour and so-called eco-colonialism.

Jennison describes the diesel-powered Harley as "a rolling proof of concept," demonstrating the fuel's real-world use. His team’s goal is to gather enough money through GoFundMe to allow Jennison to continue the road journey, to prove that the idea is viable.

Even with its tractor engine, the Harley still sports a classic look
Even with its tractor engine, the Harley still sports a classic look

Source: GoFundMe

View gallery - 5 images
15 comments
15 comments
gimd
Silence from the liberal crowd, we need more of this and companies like open funk making things that last longer and built better.
CHRSKO
Love this project! A real world engineering project for a student is fantastic. It may be great as a way to utilize waste, but I am skeptical of producing it just as a fuel source. There just isn't enough available land to grow all of the feedstock plus feed us. It is only a piece of the puzzle, not the total solution that some believe it to be. Not to mention how much diesel it takes to produce. Some studies indicate it may take 5 gallons to make 4. It would be great to see a project where the entire process from plowing to the pump was fueled entirely by biofuel to see a real world view of exactly what we can produce this way.
Username
Prove that it works? People have been running diesel engines on used cooking oil for decades. 30 years ago a friend of mine drove an old school bus to Costa Rica picking up used oil from various eateries on the way. And @gimd, all the people who did this were hippy liberals.
YourAmazonOrder
Um. This thing is in need of a fairing or a large engine cover. Spinning pulleys/belts right next to one's pant legs... and the wind flapping everything around? That machine is suicidal, in its current form.
Christopher Martin
I find it funny that gimd says silent from the liberal crowd, if you used a little critical thinking you would remember that liberal hippies have been running wvo diesel vehicles for decades on homemade bio diesel or svo/wvo conversions. This is recycled old hippie tech lol. One problem i have with the article is that I thought most if not all EV no longer used cobalt in their batteries and that was where the most problematic mining was. I would also point out that you would have to know the source of the cooking oil you burn for it to be a fair comparison. It would be interesting to see what it would take for this bike to run on hydrogen as I know most diesels can be fairly easily converted.
Gerry Winter
I did this with my tractor and it ran great except when the winter came and all the oil froze So you need to make sure you have a heater on the fuel tank to keep it warm Otherwise it will become too firm to run through the leads
Cymon Curcumin
Biodiesel. Another science / technology story from my high school days. I’m in my 50s now and I think I should have hung on to all the science and tech magazines I bought back then. Could have reread them now.
Nclear79
Because no Diesel engine has done this before? Like it's new that you can run an engine off this type of old only been around for 25+ years!
Patrick
An inspirational article. It’s refreshing to find young students considering the environment and seeking solutions. Regarding the diesel engine, correct me if I am wrong but I believe the diesel engine was originally designed to be fueled with peanut oil.
TechGazer
There are probably better ways to make use of waste cooking oil. Private vehicles might have too variable demand for the supply and processing and transportation infrastructure. A power generator might use it more efficiently, and require less processing.
Also, by the time the infrastructure for supplying waste-derived biodiesel really got going, e-vehicles will probably be using batteries and motors that don't require rare or unethical materials, since there's plenty of research in those areas. A 25 (or more) years old technology that didn't gain traction in the market so far will be competing with technologies developed in the near future.
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