MAX Update No. 79: Incredibly Good Mileage (127 MPG!)

| 8/7/2011 6:42:13 PM

Tags: MAX, 100 mpg, fuel economy, Vetter Challenge, Jack McCornack,


The Vetter Fuel Economy Challenge competitors during a rare stationary moment, as shot from over MAX’s hood. The yellow and white bike on the right is event organizer Craig Vetter’s streamliner, which may be the future of motorcycling. 

So I made it to AMA Vintage Days at Lexington, Ohio, one hour late for the riders’ meeting (I goofed by a time zone) but timely enough to get signed up and join the pack at the race track bright and early the next morning, for the latest Vetter Fuel Economy Challenge.

These Challenges are a series of motorcycle fuel economy competitions, and for this one, Craig Vetter opened the field to a couple of high mileage automobiles—MAX and a plug in electric conversion of a Prius. It was an opportunity to demonstrate what MAX can do in normal driving, and have somebody besides me verify the results, so I jumped at the chance.

The closer we came to the start date, the more it looked like MAX would break the 100 mpg barrier in public, which was pretty exciting to me. The weather was predicted to be exceptionally hot and humid, which reduces air density, and thus reduces aerodynamic drag and improves mileage, and most of the ride was going to be on rural roads so we’d mostly be going slower than freeway speeds. Coupled with a lack of wind, and with the so-called “hills” of central Ohio being pretty tame compared with what I’m used to in western Oregon, and with MAX’s latest aerodynamic improvements, and lightening MAX of a hundred pounds of tools and camping gear and luggage the night before the event, I was feeling pretty cocky about my chances for a three-digit mileage score.

You know how you can psyche yourself into Great Expectations before a contest even begins? I guess this is why folks bet money on the Superbowl, but I was convinced, this was going to be a good one and MAX was going to shine.

jack mccornack
8/25/2011 10:40:46 PM

Hi Mark, no driving style (hypermiling) mods for economy (e.g. pulse and glide, engine-off-in-neutral down hills etc) but plenty of aerodynamic mods that were inspired by folks on the site. I'm gradually working my way back along the car in this blog, nose to tail, about MAX's various enhancements. Since my focus (and skill set) is on the technical aspect of the vehicle, I'm trying to keep driving techniques out of the equation. I am tempted, though, to find some of those hypermiling experts on that site and give them a stint in MAX. The combination of those amazing drivers and this amazing car could be, well, for lack of a better adjective: amazing.

mark chapmon
8/19/2011 2:48:05 PM

Congratulations on the awe inspiring economy! I am kind of curious if you used fuel economy stretching techniques discussed on I know the driving tips I picked up their helped me squeeze more than 30% over EPA out of my stick shift Kia Rio and I've read the occasional post that you've made over there (but probably not all of them). Some day I plan to actually do some of the vehicle mods discussed over their, too.

8/19/2011 10:26:10 AM

No doubt there were (no matter how slight) more down hill runs than up hill runs going that way. Or you were headed due south and the rotation of the earth (centripetal force) helped push you south????LOL

jack mccornack
8/8/2011 6:46:37 PM

Hi Preston, I'm sorry you missed us. I've got a beater Miata donor stashed away to make a...a what? A MightyMAX? There's a part of me that's sorely tempted to make MAX's Evil Twin with Miata components (including engine) under the skin. I wonder what the mileage would be; it'd be nearly as light and nearly as streamlined as MAX, but with five times the horsepower it would suffer badly in the engine efficiency department, and having tasted 100 MPG I might be deeply dissatisfied by, say, 50 MPG.

preston moore
8/8/2011 2:16:04 PM

I live just outside of Mount Vernon. I wish I could have seen you and Max. I have been following for quite a while. I have my eyes on my sisters Miata for a donor car.Great job!Preston

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