8236Views115Replies

Author Options:

Students Build Car that Gets 2752.3 MPG Answered

Students at Cal Poly have made a car that gets 2752.3 mpg. It has three wheels and moves one person along at just 30 mph, but it can drive most of the way across the U.S. on one gallon of gas.
"The 96 pound car has three wheels, a drag coefficient of 0.12, a top speed of 30 MPH, and a modified 3 horsepower Honda 50cc four-stroke engine. It originally clocked in at 861 MPG and has been continuously tweaked to achieve the mileage we see today."
Link

Comments

The forums are retiring in 2021 and are now closed for new topics and comments.
0
freakshow17
freakshow17

11 years ago

If college students can make a vehicle that travels 30 mph for 2700 miles on a single gallon of gas, why can't someone (a paid professional) make a regular street legal vehicle that travels 70 mph on 100 or 200 miles per gallon?

0
jmacman12
jmacman12

Reply 11 years ago

'cause gas drives the economy, without the need for it, the price deteriorates and then companies lose money and lay people off and the next thing you know we'll be in another recession. Im sure they're able but simply "don't" thats why cars these days are starting to have better and better milage, until one day we will have reached that 100-200 mpg your talking about. Introducing it all now wouldnt benefit anyones economy.

0
zach s
zach s

Reply 11 years ago

All of the safety requirements ruin the mpg by adding weight

0
carpe_noctem
carpe_noctem

Reply 11 years ago

Those same safety features are what make cycling so dangerous. lolz

For real though, just ride a bike if you don't want to be burning gas.

0
mikeasaurus
mikeasaurus

11 years ago

metric: ~ 1100 km/L.

It would be great to blend this technology with an application that can be used daily by many.

more low consumption student vehicles:
link: msnbc
link: shell

0
=SMART=
=SMART=

11 years ago

Awesome !
It would be cool it they tag-team drove this across the US and used less than 2 gallons of petrol.

You could travel for 91 hours without stopping :D

91 Hours or 3.8 Days

0
gitchermotorgoin
gitchermotorgoin

Reply 11 years ago

um, 91 hours w/o a potty break? Dang, that would draw a lot of attention for several reasons! nice lines, grow this design by 2x and you'dstill have a ultralow drag car with functionality and commercial appeal, even as a homebilt from plans. motorcycle power with fully faired body will compete w/ guzzlers until batteries fill the void. google trikes and begin designing your own. ppdd.  

0
FastEd88
FastEd88

11 years ago

Now Cover the body with solar cells allowing you to get up to 55-60 mph so it might be useful, Is it even street legal by US law as is? A electric version run solely by solar cells would use no fuel, if everyone had one, gas would be 1,000 a gallon! They are gonna win unless we get off oil all together, the electric car is gonna win as soon as the get it in mass production to get the cost lower and you can't get much cheaper that electric cost you to charge at home, what we need are better lighter batteries! also the compressed air engine/car looks promising for the future, being that we could use a home electric run compression unit to refill it or buy it from refill stations if we are away from home on a trip. even electric cars could have exchangeable battery packs just like the tow motor industry has used for years for when we travel away from home

Great you did it...but will it matter?

Just a thought...
Fast Ed

0
BoeroBoy
BoeroBoy

11 years ago

That's great but a bicycle still gets better mileage than that and goes about the same speed.

0
Houdinipeter
Houdinipeter

Reply 11 years ago

 not true with hills. in pgh you can't go anywhere without going up or down a hill, and the most i've gotten on a hill is 30mph.

0
Houdinipeter
Houdinipeter

Reply 11 years ago

 plus what about the food/fuel cost?

0
BoeroBoy
BoeroBoy

Reply 11 years ago

Well, since this vehicle claims a MAXIMUM speed of 30 mph, I counter with a bike's MAXIMUM speed of 30 mph.  To me that implies the Cal Poly doesn't go 30 mph for an hour straight.  Just like a bike wouldn't go 30 mph for an hour straight.

And as for the food/fuel cost, if you count the gym membership for the couch potato behind the wheel of Cal Poly (not necessarily a couch potato), I think the fitness benefits of the bicycle have an edge too.  Double edged sword,  I guess.

0
jr98664
jr98664

Reply 11 years ago

 Weak. Even I've broken 30 mph cycling uphill. Going downhill I can get close to 50 mph.

How well does this thing take hills, anyway?

0
thepaul93
thepaul93

Reply 11 years ago

I guess this means you just have to have a race.

0
BoeroBoy
BoeroBoy

Reply 11 years ago

That would be loads of publicity for Instructables.  I think they should sponsor it.

0
Doc Holliday
Doc Holliday

Reply 11 years ago

Rain/snow, splash from semi's''?

A little shelter would be nice.  Even if you're just doing 300 miles.

What would an 8HP engine do?  Tie it to a hybrid Bloom package? 

This has possibilities!

0
Houdinipeter
Houdinipeter

Reply 11 years ago

well i guess whichever catches on first! ;)

0
Phantom5582
Phantom5582

Reply 11 years ago

I don't mean to be rude, but what bike do you ride that can go to 30 MPH?

0
Rock Soldier
Rock Soldier

Reply 11 years ago

Nice one.
(if only I could Fave comments)

0
Zaphod Beeblebrox
Zaphod Beeblebrox

Reply 11 years ago

that would make a good pro feature,fave and rate comments!

0
TheBatchies
TheBatchies

Reply 11 years ago

you is make me leaved out. i is feel neglect.

0
Mudbud
Mudbud

Reply 11 years ago

my 2hp mini bike.....its awesome

0
foxtrot4697
foxtrot4697

Reply 11 years ago

and less efficient

0
Mudbud
Mudbud

Reply 11 years ago

^^
phantom5582...."I don't mean to be rude, but what bike do you ride that can go to 30 MPH?"


Me.. "my 2hp mini bike.....its awesome"

foxtrot4697..."and less efficient"

All he said was what bike do you ride that can go 30mph?  he didnt say anything about efficiency. but you are right foxtrot4697. and its smelly too. :)

0
foxtrot4697
foxtrot4697

Reply 11 years ago

lol yeah, but mini bikes are awesome

0
fazgard
fazgard

Reply 11 years ago

When I was a kid, I could easily keep up and beat local traffic on my old crappy 10-speed :) at 30+ ..

0
AlfredoSG
AlfredoSG

Reply 11 years ago

 Party pooper.

0
ANDY!
ANDY!

11 years ago

sweet. I could probably make one too! (maybe)

0
jspiteri
jspiteri

11 years ago

don't forget to get the oil changed when you have to buy another gallon of gas

0
Set271
Set271

11 years ago

Absolutely Awesome! I wish this new tech could be put to use now. Between the entities that simply want to make money to make even more money and the simple fact that everyone else just wont slow down...it's no wonder the common automobile hasn't really gotten more efficient. Deflect and distract has ruled the auto industry far too long. These students should be applauded, not just here, but in the mass media. I'm not surprised, not to be-little this forum in any way, I haven't seen this on any Three Letter Network,

P.S. I bet these college kids didn't spend their nights partying.

0
Neppy-Wolf
Neppy-Wolf

11 years ago

It would be great if the could couple that with manpower but still have the same amout of power

0
limpport
limpport

11 years ago

 This is a great project, and it's really cool to see how much they can get out of just a single gallon of gas.

It it's current state, although awesome, it is not practical.  If they were to build prototypes that could be sold to the public, it would need to have at least 2 seats and a minimum top speed of 50mph.  This, of course, would cut down dramatically on the MPG.  But that's what prototypes are for!  Tweak and play around with it, experiment, and they could get a realistic model in 5-10 years.

0
gk1651
gk1651

11 years ago

This is awesome...now if they could tweak it so it had four wheels and a four person passenger load, plus 70 mph and see what better mpg we could get than we currently have. If it took 20 gallons to cross country it would still be an ultra-awesome feat.  I'm sure they could make that happen.

0
CameronSS
CameronSS

Reply 11 years ago

20 gallons to cross the country is (very) roughly 150mpg...quite doable, really, but it's sure not going to be a Lexus...

0
gk1651
gk1651

Reply 11 years ago

make it affordable and I'll gladly scrap metal what I currently drive ( a gas guzzlin Jeep Cherokee).

0
Glitch50
Glitch50

11 years ago

2752.3 MPG!? That's f**ing Insane

0
Rock Soldier
Rock Soldier

11 years ago

Anyone have any idea how much it cost?
(Just imagine if it had Nitrous on it)

0
Car6on14
Car6on14

Reply 11 years ago

maybe they can turbo it...

0
bowmaster
bowmaster

11 years ago

I want one!!! I could drive to school and back 688 times on 1 gallon of gas!!!

0
coopecb1
coopecb1

11 years ago

I imagine those results are on flat terrain. What happens when you get to Colorado on an East-to-West trip? The effort of bringing your fuel uphill will use most of your fuel.

0
kelseymh
kelseymh

11 years ago

Minor note from the build team's own Website: that 2752 mpg figure is from 2008, where they placed second in the Shell Eco-marathon.  Since then (two years), they have been working on fabricating an "Urban Concept" vehicle.

0
jrossetti
jrossetti

11 years ago

fungus: when do you make one?  :-D