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07-02-2008, 06:32 AM
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Hummer Guru
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Join Date: Dec 2006
Posts: 2,195
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Re: Hypermiling in a Hummer
lets see i do that neutral thing if i see a stop light ahead and what not, i use cruise control ALL THE TIME, i tend to follow the speed limit, and im very light on the as while accelerating, and i get average about 16 mpgs in my h3, not bad considering hte estimated 14 city and most of my driving is city, also my friends got a 3, hardly gets abotu 14.5 mpg's
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2003 H1 HMCS: Ocean Blue Metallic, Grey Leather Interior
2010 H3 Alpha: Canyon Metallic, Cashmere Interior
2017 VW Jetta S
2012 Cessna 182T Skylane
used to have: 2007 base H3 Slate Blue
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07-02-2008, 07:18 AM
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Hummer Authority
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Join Date: Mar 2003
Location: P-Town and Now Vegas again.
Posts: 1,369
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Re: Hypermiling in a Hummer
you know i slap my big guy into N every once in a while when heading down to the strip... its all down hill..
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07-02-2008, 03:17 PM
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Hummer Expert
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Join Date: Sep 2007
Location: Mason, OH
Posts: 779
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Re: Hypermiling in a Hummer
I would love to see someone try and hypermile an H2. I can see it now a guy jumping out of his H2 at a stop light get his 6500# + H2 moving at a jogging pace before leaping into it and running himself over.
I think this guy was trying to Hypermile and be cool about it.
http://www.youtube.com/watch?v=V9fQUGJyUjQ
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07-05-2008, 02:21 PM
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Hummer Expert
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Join Date: Apr 2004
Location: Grass Lake,Mi
Posts: 583
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Re: Hypermiling in a Hummer
Quote:
Originally Posted by HumminNBoatin'
I would love to see someone try and hypermile an H2. I can see it now a guy jumping out of his H2 at a stop light get his 6500# + H2 moving at a jogging pace before leaping into it and running himself over.
I think this guy was trying to Hypermile and be cool about it.
http://www.youtube.com/watch?v=V9fQUGJyUjQ
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I don't think you understand much about hyper miling. the trick is the vehicle must get good economy when wind resitance is removed. the idea here is that H3 & H2 suck fuel sitting still. add the fact your fling down the road in a very large brick and your pretty much screwed.
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07-05-2008, 05:39 PM
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Hummer Authority
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Join Date: Jun 2005
Location: Key Largo
Posts: 1,174
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Re: Hypermiling in a Hummer
Like almost all of us, my H2 is not my only car and I really don't care whether it gets 9 or 15 mpg. I bought it for the fun factor, getting through snow on country unplowed roads, and occassional use offroading. I would be miserable in a Toyota RAV 4 with my 6 ft 5 frame and the last reason I bought my Hummer was for its mileage. Happy 4th weekend to all!
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07-05-2008, 06:53 PM
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Hummer Authority
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Join Date: Mar 2003
Location: P-Town and Now Vegas again.
Posts: 1,369
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Re: Hypermiling in a Hummer
Quote:
Originally Posted by HummerJim
Like almost all of us, my H2 is not my only car and I really don't care whether it gets 9 or 15 mpg. I bought it for the fun factor,
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I concur with the FUN factor.... but i do get 18.5mpg going 48mph...
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08-23-2011, 05:04 AM
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Elcova Newbie
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Join Date: Aug 2011
Posts: 2
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Re: Hypermiling in a Hummer
About 3 years before buying my H3, I purchased a Prius and got very involved in hypermiling. In my 2003 Prius, my best milage was 76 mpg over a tank of gas. Now, I was on a road trip and a lot of that was downhill, but hey, it was still pretty high.
So, I got my H3 in 2006, and when I got it, I calculated that it had the best MPG and DPM (dollars per mile) of all other cars in its class. The MPG was pretty straightforward. But, the DPM was what really sold me. The fact that the H3 uses 87 octane gas, and most other vehicles in that class use high or medium octane gas, mean each tank is cheaper. Combined with the good mileage, I felt I was getting a pretty "green" vehicle.
Fast forward 5 years, and my initial thoughts were correct. Of all non-hybrid vehicles in the H3's class, the H3 has proven to be the "greenest" alternative.
Regarding hypermiling techniques, there are a couple "legal" ones that apply to the H3.
Pump and Glide
The pump and glide technique is where you accellerate to a speed just above the listed MPH and then coast. In hybrids like the Prius, while coasting you can effectively put the vehicle in neutral by slightly pressing the gas pedal. This results in a greatly decreased mechanical drag from the drive-train, and allows the glide to be longer. Additionally, hybrid's aerodynamics and more concentrated weight due to the large batteries result in long "glides". In practice, this is not the same with the H3. The pump-and-glide technique in the H3 results in a lower MPG than using the cruise control.
All of the Other "glide" techniques
As with the pump and glide, all of the glide techniques only work if your glide path is long, your vehicle is good aerodynamics and you can greatly reduce the mechanical drag by putting the vehicle in a quasi-neutral state. The only time a "glide" technique will improve your H3's fuel efficiency, is if it is done over a long decline in the road.
Don't use the Illegal Techniques
Listen, there's a reason we have the Darwin Awards, because stupid people do stupid things like the illegal hypermiling techniques. Just don't do them, and if you do, I welcome your addition to the Darwin Awards.
Techniques that Work
Early on in the hypermiling world, the simplest thing folks could do to improve thier mileage was to use cruise-control. Then, when the benefits of aerodynamics and having the power-train turn itself off automatically arose, the glide techniques started to dominate the hypermiling community. For us, the H3 drivers, the original message is the same, put your vehicle in cruise control and keep it there where it makes sense and is save.
Stay off the brakes. On non-hybrids, whenever you use the brakes you are wasting kinetic energy. Get used to stopping acceleration a couple hundred yards (meters) prior to a stop, and coast in. If someone gets all whiny and cuts you off, then hit the brakes.
Defeat the caterpillar. A major waste of gas in urban areas is the constant accelleration and decellaration required when you are in a traffic jam. Instead, try getting in the slow lane and settling on one speed. It should be slow enough that you can "coast" between decellarations, but fast enough that you can keep up with other vehicles. I usually try to stay about 200 yards at most from the next closest vehicle when trying this technique. Remember, the goal is to reduce accelleration and braking to as little as possible.
Steady. Find a mileage rate and stick to it, the slower the better. Do you really need to go 70 MPG? Try setting cruise control for 65 for a while. Your milage will improve and you'll get there in very nearly the same amount of time.
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07-02-2008, 05:03 PM
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Hummer Authority
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Join Date: Nov 2002
Location: Wherever I Go, There I Am!
Posts: 1,216
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Re: Hypermiling in a Hummer
Quote:
Originally Posted by Albie
you know i slap my big guy into N every once in a while when heading down to the strip... its all down hill..
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Just courious  Does P-Town have a couple Seemore's, and how many times you seen my rig runnin around??
And, if it's the same hill, HELL, that's a 80MPH idle down!! 
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07-04-2008, 11:19 PM
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Hummer Authority
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Join Date: Mar 2003
Location: P-Town and Now Vegas again.
Posts: 1,369
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Re: Hypermiling in a Hummer
Quote:
Originally Posted by Big Z
Just courious  Does P-Town have a couple Seemore's, and how many times you seen my rig runnin around??
And, if it's the same hill, HELL, that's a 80MPH idle down!! 
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LOL I dont live in Pasadena anymore.. But i used to come down LAKE on my Bike @ around 45mph...
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07-05-2008, 02:07 AM
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Hummer Professional
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Join Date: Feb 2006
Posts: 368
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Re: Hypermiling in a Hummer
Ive said it before....if you set the cruise at 55, on the highway....you will get 15mpg.
--John
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07-05-2008, 06:42 PM
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Hummer Authority
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Join Date: Nov 2002
Location: Wherever I Go, There I Am!
Posts: 1,216
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Re: Hypermiling in a Hummer
Quote:
Originally Posted by Albie
LOL I dont live in Pasadena anymore.. But i used to come down LAKE on my Bike @ around 45mph...
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I was Thinking the P- town, 60 miles from Vegas 
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07-05-2008, 06:51 PM
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Hummer Authority
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Join Date: Mar 2003
Location: P-Town and Now Vegas again.
Posts: 1,369
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Re: Hypermiling in a Hummer
Quote:
Originally Posted by Big Z
I was Thinking the P- town, 60 miles from Vegas 
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LOL i got ya.... I was just there last week showing a house... Man that place sucks but it has grown alot. They have a walmart with Condoms on sales... got fig...lol
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