Go Back   EcoModder Forum > EcoModding > General Efficiency Discussion
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 12-31-2007, 11:06 PM   #1 (permalink)
EcoModding Apprentice
 
bestmapman's Avatar
 
Join Date: Dec 2007
Location: home
Posts: 133
Thanks: 0
Thanked 1 Time in 1 Post
Possible to make/mod a 200 MPG highway cruiser?

I would like to know if anyone thinks it is possible to make/modify a car to get 200 MPG on the highway.

Here is the specs:

1000 miles unrefueled range
65 MPH average speed

Other than those specs, sky is the limit.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 12-31-2007, 11:26 PM   #2 (permalink)
igo
Master EcoModder
 
igo's Avatar
 
Join Date: Dec 2007
Location: Wheeling, WV
Posts: 410

Mini Box Truck - '05 Scion Xb
90 day: 32.87 mpg (US)

It FITs - '09 Honda Fit Sport
90 day: 40.59 mpg (US)
Thanks: 12
Thanked 13 Times in 9 Posts
I don't think any production car car get 200mpg @ 65mph without extreme mods. Areo to the max, carbon fiber everything, and a small engine might just do it.
  Reply With Quote
Old 12-31-2007, 11:41 PM   #3 (permalink)
nut
 
Coyote X's Avatar
 
Join Date: Dec 2007
Location: Southen West Virginia
Posts: 654

Metro XFi - '93 Geo Metro XFi Convertible
90 day: 62.17 mpg (US)

DR650SE - '07 Suzuki DR650SE
90 day: 55.26 mpg (US)
Thanks: 0
Thanked 37 Times in 26 Posts
Send a message via MSN to Coyote X
something like a 80-90cc scooter could probably do it if it had an aero body built for the sole purpose of getting mileage. I don't think it would be fun to drive though being wedged into an aerodynamic body with no ventilation and no room to haul anything except yourself.
  Reply With Quote
Old 12-31-2007, 11:43 PM   #4 (permalink)
Lurking footless halls
 
Silveredwings's Avatar
 
Join Date: Dec 2007
Location: northeast
Posts: 249

Orient Blue - '02 BMW 325Ci Convertible
Thanks: 3
Thanked 3 Times in 3 Posts
The hard part is the 200 mpg (you'd need only 5 gallons to go 1000 mi.).

The specs for the Aptera at 55 mph with a parallel hybrid diesel are 230 mpg. At 65 mph, you'd need about 1/3 more hp and would probably get less than 200 mpg. It's not mass-produced yet but you can put a deposit on one.
__________________
Any sufficiently advanced technology is indistinguishable from magic. - Clarke's Third Law
  Reply With Quote
Old 12-31-2007, 11:46 PM   #5 (permalink)
EcoModding Apprentice
 
bestmapman's Avatar
 
Join Date: Dec 2007
Location: home
Posts: 133
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by igo View Post
I don't think any production car car get 200mpg @ 65mph without extreme mods. Areo to the max, carbon fiber everything, and a small engine might just do it.
Do you think a geo metro 3 cylinder with maxed out aero mods would do it. I mean radical aero mods.
  Reply With Quote
Old 01-01-2008, 12:01 AM   #6 (permalink)
Giant Moving Eco-Wall
 
DifferentPointofView's Avatar
 
Join Date: Dec 2007
Location: The Dale, IL (or A-Dale)
Posts: 1,120

The Jeep! - '95 Jeep Grand Cherokee ZJ Laredo
90 day: 23.75 mpg (US)

The Caliber - '07 Dodge Caliber R/T
90 day: 30.6 mpg (US)

The 'Scort - '98 Ford Escort LX
Thanks: 0
Thanked 7 Times in 6 Posts
http://www.cosmocentral.com/post/200...0-mpg-Car.aspx

Take this and mod it even more and see what you come up with. I'm guessing the best way would be to either take a turbine engine and tune it way down or taking a really small diesel engine and working with that.
__________________


Yea.. I drive a Jeep and I'm on a fuel economy site, but you just wouldn't understand... "It's a Jeep thing!" *Jeep Wave*

Did I Use Too Many Abbreviations? Here's The Abbreviations List
  Reply With Quote
Old 01-01-2008, 12:12 AM   #7 (permalink)
EcoModding Apprentice
 
bestmapman's Avatar
 
Join Date: Dec 2007
Location: home
Posts: 133
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by DifferentPointofView View Post
http://www.cosmocentral.com/post/200...0-mpg-Car.aspx

Take this and mod it even more and see what you come up with. I'm guessing the best way would be to either take a turbine engine and tune it way down or taking a really small diesel engine and working with that.
That link looks interesting, but the car designs don't look very aerodynamic. When I compare Basjoos's car with those, there are no wheel skirts, air dams, or tail cone.

Next question:

To get to 200 MPG highway, what is the most important aspect.

1) powerplant/engine/fuel
2) aerodynamics
3) hybrid design
4) transmission
  Reply With Quote
Old 01-01-2008, 12:20 AM   #8 (permalink)
Giant Moving Eco-Wall
 
DifferentPointofView's Avatar
 
Join Date: Dec 2007
Location: The Dale, IL (or A-Dale)
Posts: 1,120

The Jeep! - '95 Jeep Grand Cherokee ZJ Laredo
90 day: 23.75 mpg (US)

The Caliber - '07 Dodge Caliber R/T
90 day: 30.6 mpg (US)

The 'Scort - '98 Ford Escort LX
Thanks: 0
Thanked 7 Times in 6 Posts
you can't just get if with one of those, you can have the best powerplant in the world but if your driving the empire state building around your not gonna get 200mpg, hybrid I think is the least of our worries, because we can get by on a turbine or diesel. Tranny is third.

Since we're traveling at 65, Im gonna go with aero, followed by powerplant, then tranny, and if we're doing a hybrid, so be it.

Oh, and the link, you take that car, then aeromod it. BOOM, better mileage. or you could take that and the aptera and combine the aptera's aero with this one.
__________________


Yea.. I drive a Jeep and I'm on a fuel economy site, but you just wouldn't understand... "It's a Jeep thing!" *Jeep Wave*

Did I Use Too Many Abbreviations? Here's The Abbreviations List
  Reply With Quote
Old 01-01-2008, 12:43 AM   #9 (permalink)
EcoModding Apprentice
 
bestmapman's Avatar
 
Join Date: Dec 2007
Location: home
Posts: 133
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by DifferentPointofView View Post
you can't just get if with one of those, you can have the best powerplant in the world but if your driving the empire state building around your not gonna get 200mpg, hybrid I think is the least of our worries, because we can get by on a turbine or diesel. Tranny is third.

Since we're traveling at 65, Im gonna go with aero, followed by powerplant, then tranny, and if we're doing a hybrid, so be it.

Oh, and the link, you take that car, then aeromod it. BOOM, better mileage. or you could take that and the aptera and combine the aptera's aero with this one.
I see what your saying, combine the aptera with the powerplant in the link. Off topic a little bit, but I think the Aptera should be 2 wheels only with outriggers that come down at slow speed. How cool would that be.
  Reply With Quote
Old 01-01-2008, 01:27 AM   #10 (permalink)
Master EcoModder
 
roflwaffle's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 1,457

Camryaro - '92 Toyota Camry LE V6
90 day: 31.12 mpg (US)

Red - '00 Honda Insight

Prius - '05 Toyota Prius

3 - '18 Tesla Model 3
Thanks: 281
Thanked 86 Times in 60 Posts
Quote:
Originally Posted by bestmapman View Post
To get to 200 MPG highway, what is the most important aspect.
Aerodynamics, transmission, then powerplant/engine/fuel in that order. You can solve backwards for parameters to figure what ya need (lmk if ya need info/pointers). Based on my offhand calcs, you're probably gonna need the smallest Metro to have a drag coefficient of ~.12-13 and the best LRR tires pumped up a bit. Then, in order for the engine to operate as efficiently as possible the top gear ratio is going to have to be dropped significantly, the engine downsized, or both. Weight won't matter much compared to aero at that speed, so your best bet is to keep all the creature comforts and concentrate of aero then gearing. Basjoos could see ~130+mpg@65mph IMO w/ a taller fifth. You can also go diesel if you wanna "cheat" since diesel has ~12% more energy per gallon than gasoline and peak engine efficiency for gas/diesel is about the same.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY: OEM VX PCV and Info TomO DIY / How-to 4 04-02-2011 09:38 AM
Why the Civic VX is a superior highway fuel economy (FE) machine MetroMPG General Efficiency Discussion 9 10-10-2010 05:26 AM
Here From TDIClub - looking to increase highway mpg dremd Introductions 27 02-25-2008 08:36 AM
What would it take to make cycling popular igo Alternative Transportation 16 12-18-2007 01:17 PM
DIY: Make a PVC Catch Can for your PCV System TomO DIY / How-to 0 11-14-2007 03:30 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com