How is the mesh held on to the Coroplast?
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Neat looling job.
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Yellow duct tape. except the twin muffler section where the mesh is under the coroplast and attached thru the mounting screws with the coroplast
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What are you talking about!
1. Show me one F50 getting those numbers and then....call me. 2. The epa number is18/23. the epa numbers were reduced BECAUSE no one could hit them, they were unrealistic! 3. You obviously don't know what CAFE is........ so I pulled an article for you: HOW CAFE RATINGS WORK Tuesday, May 19, 2009 "When the proposed new rules on Corporate Average Fuel Economy (CAFE) are finally put into effect, automakers will have a little less than seven years to meet the new standards of 39 mpg for cars and 30 mpg for light trucks. That is about how long it takes to design and build an entirely new vehicle, so they should be able to engineer the efficiency of the cars they manufacture to meet the new targets at the price of about $1,300 per car, according to the federal government. But that’s just half the battle. CAFE ratings aren’t based on the cars a company makes, but the cars that they sell. So even if an automaker puts a 200 mpg car in its showroom, if no one buys it, it doesn’t do them any good in the eyes of the National Highway Transportation Safety Administration (NHTSA). And the fuel economy numbers used to calculate it aren't the same as the ones on the widow sticker of your new car. A mid-size 2007 Ford Fusion sedan with a 4-cylinder engine and manual transmission has an EPA combined rating of just 23 mpg, but CAFE gives it a figure of 31 mpg that doesn't factor in day to day driving habits.Consider a fictional company called Two Motors that builds just two models that it sells through a single dealership. One is a full-size sedan that seats five and gets 29 mpg, the other a two-seat hatchback rated at 49 mpg. On the showroom floor the cars average out at 39 mpg, and the automaker is set to be in compliance with the new rules. Then the Catch-22 begins. Two customers come in and decide that they prefer the sedan over the hatchback and both purchase one, dropping the CAFE rating to 35.6 mpg. The next day the dealer sells three more sedans, and its CAFE falls further to 32.3 mpg, putting it in the tough position of having to sell five of the unpopular hatchbacks to get the average back up. If it doesn’t there is a $5.50 fine for every tenth of a mpg they come up short, multiplied by the total number of vehicles sold that year. So, if Two Motors has a good year and sells one million cars, but ends up with a CAFE of 38.9 mpg, it’s looking at a $5.5 million fine. At some point the automaker has to decide whether it’s worth paying the penalty and sell more cars, or if it should simply stop making the sedan available until it moves enough hatchbacks to get the CAFE number back up. A number of automakers have chosen the former, and $775 million in fines have been collected since 1983. Thanks to a recent turn to more fuel efficient vehicles, most of the major automakers are already above the current CAFE for cars of 27.5 mpg, and well on their way to 39 mpg, but some are much closer to the mark than others. The following is a list of the 2008 figures for the top 10 best-selling automakers: Toyota 36.4 Honda 35.1 Hyundai 33.8 Kia 33.4 Nissan 32.2 Ford 30.0 General Motors 29.8 Chrysler 29.5 VW 28.8 BMW 27.4 Mercedes-Benz 26.4 (Source: NHTSA Summary of Fuel Economy Performance) Two key words: 1. Corporate - meaning ALL cars made under one brand 2.average - when COMBINED with the word #1, means ALL cars |
There's a few different ratings around...here's the shorter, simplified explanation:
EPA old ratings: Before 2008. These were ratings that hypermilers could beat but average drivers rarely achieved. EPA new ratings: Starting in 2008, the EPA adjusted their ratings so more realistically reflect what average drivers do. Average drivers can easily achieve these numbers and hypermilers beat them with little effort. A minor update was done for the Cash For Clunkers program, too. CAFE ratings: Way higher than either EPA consumer fuel economy rating, these ratings are for the purpose of measuring compliance with laws requiring increased fuel economy. CAFE ratings are specific to each car, not an average across a manufacturer's whole product line; the CAFE rating is used in calculating the whole product line's average, based on how many cars are actually sold. |
"CAFE ratings are specific to each car, not an average across a manufacturer's whole product line"
I'm sorry but that is incorrect. It can't be both an average across the line AND specific to the car. CAFE is based on cars sold. period |
What are they averaging to produce that CAFE rating, then?
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"Consider a fictional company called Two Motors that builds just two models that it sells through a single dealership. One is a full-size sedan that seats five and gets 29 mpg, the other a two-seat hatchback rated at 49 mpg. On the showroom floor the cars average out at 39 mpg, and the automaker is set to be in compliance with the new rules.
Then the Catch-22 begins. Two customers come in and decide that they prefer the sedan over the hatchback and both purchase one, dropping the CAFE rating to 35.6 mpg. The next day the dealer sells three more sedans, and its CAFE falls further to 32.3 mpg, putting it in the tough position of having to sell five of the unpopular hatchbacks to get the average back up." point taken. BUT TO STAY ON TOPIC....... for imjustplayin to state that 32mpg is "so what" is absurd (and misinformed). Forums don't require 'proof' to make statements but need to be backed up or withdrawn when challenged. |
[QUOTE=mcrews;145843
BUT TO STAY ON TOPIC....... for imjustplayin to state that 32mpg is "so what" is absurd (and misinformed). Forums don't require 'proof' to make statements but need to be backed up or withdrawn when challenged.[/QUOTE] You're right on that mcrews. What you did is simply wonderful and needs to be encouraged. There's only one thing that's missing to 'evaluate' the 32mpg: I'm very curious to know what the mpg was before the modification in approx. the same circumstances? |
i-DSi, thanks for the props.
Maybe I should link these step by step mods together. I use the same strtch of hwy and go 7 miles up and 7 miles backseveral time at 60 on cruise control. Here is the first mod with the results: https://www.gassavers.org/showthread....&highlight=q45 here is the next mod: https://www.gassavers.org/showthread....&highlight=q45 so to answer your question: Before the current mods - I was at a best of 27mpg on roadtrips this included coasting down hills w/ engine on, driving smart but not true hypemiling, and 255/45/18 instead of 245 and PSI at 44.(not tests). after front grille block, and full underbelly pan and seams sealed(just for the run) I am at 32mpg. I have not been on a road trip(50 miles+) for the last two months. But I am driving from Sacramento Ca to LA Ca in Jan. |
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You will be able to tell any reallife experience when traveling from Sacramento to LA. I'm really looking forward to this. Please keep us posted. I was curious what a complete uderbellypan only could do. My Civic has this standard, just as 4 wheeldeflectors (I added grillblock, see my gasslog). So I guess the influence of bellypan must be really noticeable or Honda wouldn't manufacture them like this. |
If you understand A-B-A testing you realize it is almost impossible to run that method with a full underbelly pan because you have to put it on within minutes and make the next run. I dont have access to a shop lift and I have sealed portions of the under belly pan to eliminate almost all seams and gaps created by the panels.
But my numbers are from the previous two tests. I refered to the two previuos posts, you will see results for each mod. I do have an established baseline. 12-10-09 my first post. (I have documented A-B-A testing prior to posting.) these two items Upper Grille block and lower side block, pushed me over 28.5mpg at 62mph. I had gotten 27 prior. 12-11-09 Infiniti has under belly panels but they are not perfectly flat. Also since I installed the IMPUL body kit, it left a gap of 2 inches. I found some gray abs w/ dipples. I went from 28.5 mpg at 62mph to 30.8mpg at 62mph then, this post. So I ran the same course at aproximately the same time to achieve a similar ambient temp. I ran the course 4 times. 2 up and 2 back. It was wetter and cooler than the DOCUMENTED runs for the previous tests. I will post an the 18th after my trip. |
What you need to understand is you need to control for variables, and a very big one is temperature... What was the ambient temperature and intake air temperature before and after.
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It's incredibly difficult to do decently controlled testing without a big budget and a proper lab - and then the lab testing is often imperfect in duplicating real-world conditions.
The best way, IMO, is to keep a continuing gaslog, do one mod/technique at a time, note all conditions before and after, and test that one mod during regular driving for at least a few tanks. If the gaslog shows a trend of change then I say the mod is likely pretty good. The only way to be sure is really long-term, but who wants to drive a couple years between trying something new? There's a decent thread on how to do more immediate A-B-A experiments as accurately as possible: https://www.gassavers.org/showthread.php?t=2 It is quite a bit of work and investment. |
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There seem to non-productive posters on most forums and I have found the one here. You're in Northern Ca...(which scares me) why don't you pull all the temp charts for hwy 80 between sacto and roseville and show me the 20-30 degree spread's in the noon hour.....:rolleyes: If this was the NICO forum, you'd be MAXNIX. He constantly makes random posts that REALLY don't help. PS to get to that part of the hyway is (here comes the surprise....) the same distance from my house!!!!! so the car is equally warmed up by the time it gets there Frankly, and I hope you can tell by my tone, I can't believe your two posts. They reek of rudeness. Do me a favor, don't post on my threads. Your foolish assumption of what I understand is just that..... foolish. Posters like you drive away noobes. |
Don't be too put-off by the skepticism. It's a necessary part of what most people do here, even when looking at their own ideas/experiences.
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@Mcrews, I am now truly amazed at the work you have done on this car.
Great job! |
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It's what happened to me, just yesterday. I've only started with my grill block experiment, emptying now the second complete tank. Yesterday I was surfing around on the Michelin site to see what was told about my tyres and there I found a higher recommended pressure specific for my car than the Honda one (Honda: 2.1 front/2.4 rear bar ; Michelin 2.4 front/2.6 rear, if I remember well). I adjusted immediately my pressure and my fuel consumption decreased from 5,7 to 5,6 l/100 km on the dashboard. So now it's hard to tell what caused this: traffic was a bit better/less snow on roads/grill block/tyre pressure/other fuelbrand (!very cheap stuff->first time I try this)... Yeah, yeah, controlling the variables... Mcrews: don't be upset by what seems negative reactions. I'm convinced more than 95% of the readers/members have deep respect. Some might even be jealous. |
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I must give you a KUDOS:thumbup: :thumbup: Your english is very good and you seem to 'read' people well! shame you don't live a little closer, I would love to buy you dinner and talk shop! |
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I am working a clear wheel cover this weekend.......;) |
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Re: Complete under belly pan on 02 Q45
I realize that this thread is over a year old but I was wondering how everything has held up? I recently have been working on my front and rear undertrays and belly panels leaving parts exposed just as you did mcrews.
Also I was wondering what is that piece that you have joining the rear undertray and the piece covering the rear axle? With my saturn I decided to completely cover mine as well and try and make it so it easily can come undone for when I need to raise the rear and I will not damage anything. |
Re: Complete under belly pan on 02 Q45
I believe that is called creating a fire hazard, all that synthetic material is too close to the muffler, sitting in traffic on a really hot day I can see that whole underside going up in flames, also the rush of air coming through the radiator when traveling has to exit somewhere...
For those states that have it, I don't necessarily foresee a good day come time for state inspection either. To say the least, I think half of that has to come off everytime the car needs maintenance. |
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