HAI Experiment - Page 6 - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 03-24-2009, 10:34 AM   #51
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Quote:
Originally Posted by NovaResource View Post
And how much of that is attributed to the WAI? And if the WAI helps, why is your winter mileage still lower?
As someone who is interested in science enough to call for proper experiments, it should be pretty obvious to you that winter brings far more variables than air temperature and that a WAI doesn't bring air to a set temperature, and therefore that a WAI would not remove the difference between winter and summer.

Quote:
35% is easy for a light and aerodynamic car like the Cavalier. I'd like you to do the same with a 3300+ pound crossover like the Tucson or a 4300+ pound minivan, both that have the aerodynamics of a brick.
I averaged almost 35% on my 4400 pound V8 full sized pickup before I quit hypermiling it and instead let it idle in my driveway for hours on end and spent lots of gas recoverying stuck cars.

Percentage above EPA rating is a good way to compare fuel economy efforts across dissimilar vehicles. It's like the "handicap" system in golf. It fails when comparing manual transmissions to automatics, though.
__________________

__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 03-24-2009, 10:34 AM   #52
Registered Member
 
Join Date: Mar 2009
Posts: 93
Quote:
Originally Posted by philip1 View Post
OK without any raised dander I have a question or two for Nova resource. what is your tire pressure? have you considdered LRR tires for either vehicle? they seem to have helped some on mine. And finally perhaps a grille block of some sort might help reduce the radiator induced drag. Just offering a couple ideas that may help.
I actually ADDED weight to my car when I replaced the tires. I went from 235/60-16" tires/wheels to 235/50-18" tires/wheels. While the overall diameter and width is the same, the 2" larger wheels added 10-pounds per wheel to the car (40 pounds total). So you could say I'm actually hurting fuel economy with them but they look so much better.

As for pressures, I've only increased pressures slightly. 32-psi is standard but I keep them at 35-psi. Yes, going higher would lower rolling resistance and increase fuel economy but I dislike the costs of doing that. With 235-wide tires, that cost is uneven tire wear (more in the center, less on the edges) and an unsafe condition. In my opinion very high tires pressures are an unsafe way to gain fuel economy. 38 to 40-psi is OK for smaller (narrower) tires but once you get above 40-psi you start taking risks. It causes smaller tire contact patches that can be dangerous in the rain and cause longer stopping distances. They are also more prone to blowout from road debris and pot holes (lots of them in PA roads).

A grill block is something I actually considered for my Nova when racing at the track (it's also a brick). I haven't done it yet but I believe in the concept and I am sure it would work. I haven't considered it for the Tucson until coming here. I may try that in the future.
__________________

GasSavers_NovaResource is offline   Reply With Quote
Old 03-24-2009, 10:35 AM   #53
Senior Member
 
Join Date: Mar 2011
Posts: 446
Country: United States
Location: Charlotte nc
Quote:
Originally Posted by maximilian View Post
Philip1, I noticed your grille block looks like it's underneath the grille, rather than on top of it. Do you ever wonder if it would cause even less drag if it were smooth? Be a lot more work I imagine. Maybe not worth it?
I've tried both ways and I found the slightly less obvious behind the grille looked better and made no milage difference. It was more about just having it rather than whether it was in front or behind the grille
Philip1 is offline   Reply With Quote
Old 03-24-2009, 10:38 AM   #54
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Quote:
Originally Posted by maximilian View Post
Philip1, I noticed your grille block looks like it's underneath the grille, rather than on top of it. Do you ever wonder if it would cause even less drag if it were smooth? Be a lot more work I imagine. Maybe not worth it?
Like philip1, I have a grille block behind the upper grille on my VW. Mine is that way to avoid making the car look too awful; when you drive as many miles as I do (or used to), it becomes very important to reduce the chance-per-mile of cops noticing you, no matter how hard you try to obey the rules.

Then there's also the issue of looking professional when I arrive at work...
__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 03-24-2009, 10:38 AM   #55
Registered Member
 
Join Date: Mar 2009
Posts: 1,139
Country: United States
That's very interesting and lowers the difficulty significantly. My car has no temp gauge or warning light so I'd need some form of safety device. Probably just a light hooked into the fan would do it. OK, I'm done veering off topic. Thanks.
__________________


Main Entry: co de pen dence - see codependency
co de pen den cy
Pronunciation: \kō-di-ˈpen-dən(t)-sē\
Function: noun
Date: 1979

: a psychological condition or a relationship in which a person is controlled or manipulated by another who is affected with a pathological condition (as an addiction to alcohol or heroin) ; broadly : dependence on the needs of or control by another
GasSavers_maximilian is offline   Reply With Quote
Old 03-24-2009, 10:44 AM   #56
Registered Member
 
Join Date: Mar 2009
Posts: 93
Quote:
Originally Posted by BEEF View Post
I just wonder, you have all of these gas log entries with no data by them. I am being sincere on this one (at least trying to be) why haven't you done any of these things to better your mileage.
Let's just say, I'm not willing to do modification to the aesthetics of the car for fuel economy. Yes, I know smaller and lighter wheels would help mileage but I not willing to go that far (yet, or at least with the Tucson).

Quote:
Originally Posted by BEEF View Post
I understand the limitations of your wife's vehicle. I actually started a thread about that a while back for my wife and her vehicle.
Yeah, the Sedona takes the kids to school (and idles in the car drop-off and pick-up lines), goes to the grocery store, etc. 90% or more city, stop-and-go driving.

Quote:
Originally Posted by BEEF View Post
do you have a scangauge? that is worth a good 20% right there and anyone would tell you that.
Not yet. I've considered buying one but the Tucson does have an average MPG reading in the trip computer. I watch that constantly and try to drive in a way to keep it high.

Quote:
(this post was meant to be sincere and without sarcasm in any way)
Understood and taken as sincere. I'm trying to be sincere too. Emotions do not translate well over the Internet.
GasSavers_NovaResource is offline   Reply With Quote
Old 03-24-2009, 10:47 AM   #57
Registered Member
 
Join Date: Mar 2009
Posts: 1,139
Country: United States
Quote:
Originally Posted by NovaResource View Post
Understood and taken as sincere. I'm trying to be sincere too. Emotions do not translate well over the Internet.
I keep forcing myself to use emoticons to try and clarify. Still kind of hate those things, but it takes a lot of time to be clear just in text.
__________________


Main Entry: co de pen dence - see codependency
co de pen den cy
Pronunciation: \kō-di-ˈpen-dən(t)-sē\
Function: noun
Date: 1979

: a psychological condition or a relationship in which a person is controlled or manipulated by another who is affected with a pathological condition (as an addiction to alcohol or heroin) ; broadly : dependence on the needs of or control by another
GasSavers_maximilian is offline   Reply With Quote
Old 03-24-2009, 10:50 AM   #58
Senior Member
 
Join Date: Mar 2011
Posts: 446
Country: United States
Location: Charlotte nc
Quote:
Originally Posted by maximilian View Post
That's very interesting and lowers the difficulty significantly. My car has no temp gauge or warning light so I'd need some form of safety device. Probably just a light hooked into the fan would do it. OK, I'm done veering off topic. Thanks.
a light would indicate when the fan is on quite well. My advice is adjust the opening till the fan stays off while on the freeway.
Philip1 is offline   Reply With Quote
Old 03-24-2009, 11:06 AM   #59
Registered Member
 
Join Date: Mar 2009
Posts: 93
Also something to consider with a WAI is the effect on the vehicles emissions. Warm, less-dense air burns less efficiently and can cause the level of NOx to go up in the exhaust and pollute the air.
GasSavers_NovaResource is offline   Reply With Quote
Old 03-24-2009, 11:07 AM   #60
Registered Member
 
GasSavers_BEEF's Avatar
 
Join Date: Apr 2008
Posts: 1,831
I don't really see how you could accurately experiment with a WAI without some sort of temp sensor?

I (like most others) use the IAT sensor readout for my experiments. that is the figure that the computer uses to calculate fuel usage (along with the o2 sensor).

the scangauge is an awesome tool. it will show you a lot of info. if you don't have one (this is to anyone) look them up www.scangauge.com and see what all they can do.

as a disclaimer, I don't sell them or have anything to do with the company. i just believe in their product.

also, aero mods don't have to look bad. take a look at my grill block. in my avatar, you can kind of see my grill. there is a pic of my grill block in my garage. it just takes time. some people aren't willing to put forth the time to make it look good others are.
__________________

__________________
Be the change you wish to see in the world
--Mahatma Gandhi



GasSavers_BEEF is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Incorrect mileage calculation? tonedepear Fuelly Web Support and Community News 6 04-04-2011 01:04 AM
No EPA Est for 2007 Chrysler Town & Country jklaiber Fuelly Web Support and Community News 1 08-23-2008 01:15 AM
ecu wiring green swift General Fuel Topics 0 05-09-2008 05:04 PM
Memorial Day. Remember those who died for our country. CO ZX2 General Discussion (Off-Topic) 5 05-28-2007 07:42 AM
WTB: HX or VX Wheels GasSavers_DaX Wanted to Buy 6 07-12-2006 10:50 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 11:38 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.