You may be able to find the same content in another format, or you may be able to find more information, at their web site. by johncarrol Fri Mar 16, 2018 9:47 am, Post A surprise was the Hummer's sand performance. Then something is amiss in the AMC-20 world of ring & pinions. Thus far, neither has been able to convert that advantage a victory at King of the Hammers. Our diff is 12" round, 10" Wide, with INTERNAL CV joints.

Next time we are in the H1 Ill try to take a quick video. New storage compartments for the driver and front passenger make storing small things such as glasses easier than before. For '06, the H1 will have the GM Duramax V-8 diesel and Allison transmission. by Action Thu Mar 22, 2018 6:37 am, Post The torque supplied in Low range will truly "pull stumps." Inflating them is just as easy - push the switch and watch the gauge until it reads the desired pressure.

JavaScript is disabled. He talked his good friend and President of AM General Jim Armour into letting him try a Humvee. The new H1 features heated leather-trimmed seating that's comfortable, especially for the driver. I might even hammer down to 60-65 in a 70MPH zone! I know. Just pointing them out.

One quick question for anyone. These vehicles began as Sasquatch Edition Broncos but were upgraded by Geiser Brothers with aftermarket suspension and axle components including you guessed it, portal axles. those diff assemblies are crazy expensive MTUH3. This is mounted in-line with the halfshaft, so that there is no change in ride height. The H1 Hummer continues the tough tradition of its military siblings. With what I have now, I still catch myself looking down at the shifter for another gear.

We've used the same air compressor in other vehicles, but it seemed to work much faster in the H1. Since were doing some of the gear reduction out at the wheel, Mason explained, The CVs and axles see about 40% less torque than in a standard configuration. In an effort to provide their customers with a competitive advantage, Mason does not sell their portal hubs individually, but only as part of their unlimited AWD truck package.

Below, four things you must know about the portal axle, which also happen to be required knowledge for appreciating the Mercedes-Benz 44 squared. The flat, smooth surface allows the H1 to slide over rocks it can't clear. by Retired War Horses Fri Mar 16, 2018 6:55 am, Post 74Weld offers billet aluminum portal boxes that use a four-gear design providing increased strength compared to traditional two-gear portals, and they are available to the general public as well. Gittin is fresh off winning the 2021 Ultra4 Championship and doesnt plan to merely watch Healy from the sidelines. Thank you so much for sharing your calculations. If you flipped an amc20 over you could solve that problem.

They're up high and out of harm's way, especially since they're also protected by the Hummer's front-to-back underbody armor. That is the equivalent of going from a 33-inch to a 37-inch tall tire without having to add bigger axles or lower gears in the differential., This wont be the first-time portal axles are run in the 4600 class. Despite strict rules regulating wheelbase, suspension design and sheetmetal, the axles have always been fair game for upgrades. by johncarrol Fri Mar 23, 2018 5:46 am, Post I also used to drive a 1991 GMC pickup with 6.2 - 4L80E and at 55MPH I would run around 1800RPM which seemed to be the best RPM area for the engine, not to mention 25MPG for a 4x4. The U.S. Army now had three serious contenders for the HMMWV contract.

That tells me (worst case scenario) With 2.56 gears- 1860+50= 1910RPM at 55MPH in OD. Thats the case with the Mercedes-Benz 44.

The axle half shafts can spin at a greater speed but generate less immediate torque, meaning less work at the outset and more productivity at the end of the machine.

Cody Waggoner and Jordan Pellegrino were early adopters of portal hubs, running two-gear portal boxes from 74Weld on their fully independent Ultra4 cars. Instead, expect to see a whole lot more portals in the Ultra4 field for the 2022 season and beyond. by johncarrol Thu Mar 22, 2018 6:10 am, Post

The difference between the RPM readings should give me an idea of how much reduction in RPM I will have with 2.56 gears vs. 2.73 gears. The Mercedes-Benz G 550 44 ($227,300), or 44 Squared, is seven feet, four inches tall.

I know absolutely nothing about H1 and not much about 4x4 in general.

The Eaton E-Locker is a very simple and seemingly bulletproof piece that works even better than claimed. You have me curious now. Still, there are plenty of similarities. This capability, most visible in its extreme ground clearance, is possible thanks to an old-school mechanical wonder: the portal axle. What RPM I will be running at 55MPH with 2.56 gears in OD. marsclassic jeep Couldn't one vehicle be designed that could replace all the rest? Running down the road at 1900RPM at 55MPH is not a 50RPM drop from 2175RPM.

Last year one finished 11thin the 4400 class, they clearly have a formula for success. I'll start to think I'm in a road tractor going down the highway.

If you have ever seen and compared what the Scorpion suspension can do & how it work vs. the HUMMER or H1 suspension, you would realize that there is no comparison and wouldn't be talking about putting an H1 diff and suspension on an H3. Other applications, such as Ford Broncos and Raptors, are also in the works.

The halfshafts also enter the geared hubs 4 inches above centerline. A growing clamor from the civilian marketplace also convinced AM General to offer the Humvee to the public. The scene of a dusty Humvee, with tired soldiers or Marines driving across impossible-looking terrain, has become synonymous with many people's perception of operations in the fight against terror. Driving Line Accelerating Automotive Passion by providing a fresh angle of what fuels us. The HMMWV would fulfill all the mission roles of the aforementioned vehicles and would also replace various specially designed military wheeled platforms. In the 1970s, the U.S. Army had a number of light tactical wheeled vehicles. Gear Patrol participates in various affiliate marketing programs, which means we may get paid commissions on editorially chosen products purchased through our links to retailer sites.

But, rememberthe two are seriously different housings. I've been a member of The Diesel Page for a few years and learned from them that our engines are the most efficient at 1700-1900 RPM. He then reported on how well it worked and, with some rough edges smoothed off, how well a civilian version might be received. by Action Thu Mar 15, 2018 12:34 pm, Post As I said "Reality Check", but what the heck, we are all friends here. Hey Dwaine, sorry I wasnt trying to come off that way, heck I have a scorpion rc car from walmart that my kids still drive around!

If the difference in reality is no more than 50RPM, I will be happy investing in 2.56 rears and running down the highway around 1900RPM at 55MPH. Not sure on cost, but have checked out some of their trucks and WOW. Ford Debuts 2023 F-150 Raptor R With 700HP Supercharged V8, Competition Diesel Performance Truck Tires, Part 2: Why Drag Racers Choose the Nitto NT420V, Sign up for more restomod content to add horsepower to your inbox. Driveline issues have plagued me for the last two years when I was winning the race, Healy revealed, and by running independent suspension I can have a skidplate that runs the entire length of the vehicle. If you think that this sounds like a scaled up UTV, you are not wrong. The wide low-profile H1 works great off-road, as already stated. When the hummer is moving forwards and you look at the cvs they are turning counter clockwise. The FV600 used a version of the DAF H-drive, with a single differential between sides and all wheels on each side linked by an internal driveshaft and bevel gearboxes to the halfshafts.

Can anyone with a tachometer, 3 speed automatic, 2.56 gears, and GPS tell me what their RPM is at 55MPH? The first action seen by the new Humvees (as the military calls the HMMWV) was in Panama, and they quickly became famous for their reliability in Operation Desert Storm. Nowhere in my posts did I state or imply I had a 3 speed with 2.73 diffs. Can I replace my 2.73 housing with a 2.56 one without any mods.? In most vehicles, axles the shafts that run between opposing (front and front, back and back) wheels are essentially one uninterrupted component. The body is built from tough 6061 T6 hardened aircraft aluminum that seems to really be able to take a beating.

http://www.ebay.com/itm/Ring-and-PiParts_Accessories&hash=item3a80550ffe&vxp=mtr, http://www.proformance.com.au/Portal_Hub.html, http://www.fourwheeler.com/how-to/ton-portal-axles-dana-60-14-bolt/photo-02.html. by dilvoy Fri Mar 16, 2018 12:47 am, Post Would be great to hear from someone who knows the subject. AM General had no older designs to start with, so, with the other companies well ahead in development of an HMMWV, it went to work designing what would become the Humvee.

Since then, more changes have been made to make the H1 Hummer work even better in mufti. By providing a 1.92:1 gear reduction out at the housing ends, all of the upstream components can be smaller and lighter, Haines explained.

The torque multiplication out at the hubs is an under appreciated benefit, Pultz explained. If you buy from a link, we may earn a commission. The Mercedes G 550 44s capability, most visible in its extreme ground clearance, is possible thanks to an old-school mechanical wonder: the portal axle. At the end of the conventional axle is a wheel hub, a gearing system that allows the axles motion to be translated at a 90-degree angle and, consequently, to turn the wheel.

If individual wheels were out of phase with their neighbours, possibly caused by cornering or slightly varying tyre diameter, this could place a considerable force on the gearbox, leading to breakages. You are using an out of date browser. This content is imported from YouTube. Where a vehicle also requires a reduced top speed, in at least one gear, the gear ratio can be chosen to reduce this.

Can an AMC 20 hold up in an H3? The portal gear configuration is also sometimes called a drop gear or drop gearset configuration[2][3] (which, despite its similarity to the term dropped axle, produces the opposite effect). The big vehicle can really be whipped around in tight places. It affords a maximum of 17 inches of ground clearance as opposed to the current normal Mercedes-Benz G-Class, which has a still above-average 9.5 inches. Simply put, the portal axle setup allows for less work in the differential and axle mechanism to translate to more torque at each wheel. Early adopters retrofitted the entire axle assemblies out of Mercedes Unimog and Volvo C303 vehicles, but these came with drum brakes, an oddball bolt pattern and a huge differential that was nearly centered in the housing. For this reason, it was regular practice when driving on tarmac to bump the vehicle over a kerb or other object at times, to allow this wind-up to be released. These hubs have a 1.19:1 gear ratio, so you can effectively run a 20% larger tire with no additional strain on the drivertrain. The full-time transfer case is a very strong NV242.

The two designs definitely need different mesh patterns. I stated that I had a 4 speed and 2.73 gears. In a portal axle, the axle shaft is above the wheel hub. Operations around the world, including Afghanistan and Iraq, have proven the Humvee in the toughest environment known to man - combat operations. We invite you to get behind the wheel with us, it's certain to be an interesting drive.

The portals have one gear instead of two so that the rotation is corrected. So put a front 2.56 in the rear. You have to drive them differently than a traditional car, but this is basically a scaled-up UTV with 780 horsepower. The new Bronco buggy is a two-seat chassis with the 460 cubic inch Jeff Ginter-built Ford small block fitted behind the cockpit. Is it true that it was only changed in the low range side?

For years a debate has been raging in Ultra4 racing over whether a solid axle or independent front suspension (IFS) is better. For a better experience, please enable JavaScript in your browser before proceeding.

In March 1983, AM General was awarded a $1.2 billion contract to produce 55,000 HMMWVs during a five-year period, with options to build another 15,000 vehicles if wanted. 1985 - Present, Questions, discussions, regarding anything related to the Humvee. Essentially, the axle rotates on a higher plane than the wheels, which allows, among other things, for higher overall ground clearance. By checking this box, you agree to Nitto Tires, A Quick Interview With Ultra4 Driver Paul Horschel, Ultra4 Off-Road Racing 2020: Season Recap and Upcoming Events, 2020 Ultra4 Lasernut Area BFE Beatdown in Moab: NITTO Podiums in Three Classes and Sweeps the 4400 Class, Yes, I would like to receive emails from Nitto Tire and Driving Line. Great idea versus a a rich mans with deep pockets and no conecpt of money dana 80 thats over priced and a less than ideal suspension design as the scorpion. The Adventure Package wheels are two-piece 17-inch aluminums, with an inner and outer bead lock and a Runflat device. The 6.5L V-8 turbodiesel, currently built by AM General, is adequate for highway running and is excellent off-road. Sign up to receive marketing communications. Also just because it came from an h1 doesn't necessarily mean its well designed or stronger. But the H1 front diff lasts because of the portals. But, I was thinking, if you bringing the H1 diff, will it also be possible to bring in H1's axles and hubs. They are also used in railways and low floor buses[6][7] although, in the case of buses, the device is engineered in the opposite way to those fitted to off-road vehicles - the axle is below the center of the wheel. Ahhh. AM General's prototype HMMWV went to the Nevada desert for testing in July 1980 - only 11 months from its inception and ahead of its competitors. While we may beat our 4x4s in the backcountry, we usually get home and perform needed repairs quickly. The new A/C and heating system, borrowed from GM trucks, works adequately for front and rear passengers and is easy to control. 2175RPM. Unit bearings are already common in the Ultra4 world because they are easy to service and do an excellent job with thrust loads, he noted. All-wheel-drive is making a resurgence in desert racing, with builder Mason Motorsports leading the way with their billet aluminum portal hubs.

As they require a heavier and more complex hub assembly, however, these systems can result in an increased unsprung weight and require robust axle-control elements to give predictable handling. The 1999 marketing agreement with GM hasn't diminished the H1 Hummer's toughness. The immediate benefit is increased ground clearance, but that is not the only advantage for those looking for an edge over the competition. A few changes to the military Humvee were made, including steel safety doors with side-impact beams, a steel roof on hardtop and wagon models, more comfortable seating, interior padding, insulation, and a commercially compatible 12-volt electrical system. Since we're Off-Road magazine, we don't much care about how the H1 Hummer works on Rodeo Drive in Beverly Hills, even though it has become de rigueur to be seen in one there.

You may be able to find more information about this and similar content at piano.io, An Automatic GMT Under $1,000 Changes Everything, Mercedes's New Sports Car Could Challenge the 911, LeBron James Invests $30 Million in Bicycles, A Bunch of New Balance Sneakers Are Now on Sale, These Are Our 10 Favorite Products of July, The Full-Metal G-Shock 'CasiOak' Is Finally Here, These Are the Best Board Shorts Money Can Buy, Meet the All-New 2023 Chevy Colorado Pickup, 4 Things to Know About Portal Axles, the Secret to the Mercedes 44s Badass-ness. The current H1 has improved creature comforts, although it still doesn't hide its military heritage. The big hump allows the transmission, transfer case, and other driveline components to get way up out of harm's way, so the trade off is worth it, in our opinion. I can't accept the fact that there are no places with piles of older 2.56 HMMWV rears that the owners don't want to make some money selling them. I did not state or imply I was looking for or happy with a 50RPM drop from what I have now. Mercedes G-Class Review: The All-New, Legendary G-Wagen Remains Iconic, This content is created and maintained by a third party, and imported onto this page to help users provide their email addresses. Its all one mostly arrow-straight system. I have 2.73 gears and I'm showing approx. These included the M151 -ton (the most recent variant of the venerable Jeep-type vehicle); the 1/2-ton M274 Mechanical Mule; the -ton Gamma Goat; and the 1-1/4-ton M880 Dodge pickup. Post To illustrate the point, the 8-inch Toyota differentials live with 42-inch tall tires on Haines competition buggy thanks to the gearing of the portals. I have extra take out 2.56's that look good inside, just I would replace seals in them. The new civilian H1 has a number of improvements, making it a more comfortable vehicle as well as even more capable in the rough. Also standard is aluminum rocker-panel protection that wraps around the underside of the body and goes all the way to the frame.

Engine: 4.0-liter twin-turbo V8Transmission: seven-speed automatic; four-wheel drive; three locking differentialsHorsepower: 416Torque: 450 lb-ft0-60 MPH: 7.3 secondsCombined fuel economy: 11 MPGOverall height: 88 inchesOverall length: 77 inchesCurb Weight: 6,825 poundsTowing Capacity: 7,000 poundsMSRP: $227,300, This Panerai Hits the Adventure Watch Sweet Spot, Brighten Your Summer with July's New Fitness Gear, Perform Better with Tommy John 360 Sport Underwear, Dad Grass Tinctures: Sleep, Chill and Recover.

by Action Fri Mar 23, 2018 3:01 am, Post Due to the gear reduction at the wheel which lessens the torque on all the other drivetrain components, the size of the differential casing can be reduced to gain even more ground clearance. 74Weld is also working on bringing portal hubs to the masses, with applications for Jeep Wrangler JKs, JLs, and JTs available on the lakebed at King of the Hammers 2022. Updated gauges convey needed information to the driver. H1 Hummer Four-door Wagon SpecificationsLength: 184.5 inchesWidth (excluding mirrors): 86.5 inchesTrack width: 71.6 inchesHeight: 75 inchesWheelbase: 130 inchesCurb weight: 7,608 poundsPayload: 2,692 poundsGround clearance: 16 inchesApproach angle (with winch): 47 degreesDeparture angle: 37.5 degreesBreakover angle: 32.5 degreesTurning radius: 25.5 feetGrade capacity: 60 percentSidehill capability: 40 percentWater-fording capability: 30 inchesRunflat capability: 30 miles @ 20 mph. The Hummer makes a great winch anchor.

by SinDiesel Wed Mar 21, 2018 7:05 pm, Post There are many reasons why the H1 Hummer works well off-road. It may not display this or other websites correctly. You kept stating you can't find a rear 2.56. In the rear, a traditional Dana 60 solid axle from Dynatrac was used with a gear ratio that matches the combined gear ratio of the front axle and the 1.45:1 front hubs. While the testing and evaluation process was too involved for us to go into, the final winner of the exhaustive tests was the AM General design. Differentials, then, can be smaller, thus further increasing ground clearance, which, coupled together, provides more overall capability off-road. Many of us here on H4O have contemplated, attempted, and even completed (Bebe & Digger) IFS builds on H3's. The packaging with portals limited uptravel, Haines confessed, but the ability to carry speed through the rocks more than made up for this compromise.. My CJ buddies can't wait to get their AMC-20's out from under their Jeeps. (Which was cool when it was designed, but outdated). Time to really think out of the box. The H1 works well in our four-wheeling environment because it was designed for war, the toughest four-wheeling environment. In 1979, with this in mind, the U.S. Army created a written requirement for a "High Mobility Multipurpose Wheeled Vehicle," or HMMWV. Another help here is the H1's 25-1/2-foot turning radius. The h1 components were definitely designed with the fact that torque is multiplied at the hubs in mind. Its helical gear-reduction hubs allowed for top-mounted axles that provided a ground clearance of 16 additional inches. The Runflat got us home. Welcome to H4O!

That was my first thought. Right now my M1123A2 is not only my daily driver, it's my ONLY driver.

In addition, at higher speeds the hub assembly can overheat.[5]. Those portals enable the trucks front suspension to have 24.5 inches of wheel travel, only about an inch less than our two-wheel-drive trucks, Neal Mason revealed. For a reduced ad experience, please login or register with the forum. The E-Lockers impressed us during our test. At the ends of the axle is a more complex system of gears that translate motion downward to the wheel hub an added step that allows the axle shaft to be higher than the center of the wheels. The CV Joint faces are 4" apart. In fact, a portal-axle equipped vehicle hasnt won the 4400 Class at the Nitto King of the Hammers since John Reynolds did it back in 2007 at the very first KOH. The Monsoon six-disc CD changer/radio sounds great and is easy to use. We're all familiar with the H1 Hummer. A sharp rock or broken bead will give our domestic rigs a flat tire, while the H1 military vehicle has to worry about battlefield problems, such as running over a land mine.

And like a semi-truck, the 44 is taller and wider than almost everything on Manhattan roads. The body width is a factor when trying to squeeze through a narrow canyon, but it's possible to put one side of the H1 way up the canyon wall and sidehill through the narrow spot diagonally.

This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. by johncarrol Thu Mar 15, 2018 7:39 am, Post Healy and his Fun Haver teammate Vaughn Gittin Jr. have already been running 74Weld portal boxes on the front of their current Bronco buggies, built by Triton Engineering with IFS and traditional solid rear axles. The 16 inches of ground clearance down the middle of the vehicle allows for traveling over large rocks, although you still might whack the beefy lower A-arms if you aren't careful. We can't wait to get our hands on one of those.

In 2020, Jesse Haines piloted a Roxor fitted with his portal axles to victory in the 4600 Class at the Every Man Challenge. AM General says that the Runflat works for about 30 miles, but we ripped a sidewall on the first third of the Golden Spike trail in Moab, then completed the whole trail and drove back to town on the flat, just to see if we could. This has no differential axle between wheel stations on each side and so 'wind-up' was a regular problem for these vehicles when driven on roads. The fiberglass hood is protected up front by a standard grille guard that's been beefed up since we last visited the Hummer in the late '90s. Upon further reflection, we realized the Humvee wouldn't be part of the military's lineup if it didn't work in the sand. CROWNED 2021 NATIONAL CHAMPION. I'm sorry, when I say rears, I mean both front and rear differentials. 265RPM drop (worst case scenario). Also included in the Adventure Package is a 12,000-pound Warn winch. This year, Loren Healy is hoping to change that though with his new fully independent Ford Bronco buggy. Fuel economy during our test ranged from 10-12 mpg - not terrible when considering the 7,600-pound heft of our H1 wagon and the way we drove it.

This can be of use in lowering the center of gravity for a given ground clearance. We already mentioned the H1's underbody protection that runs the length of the vehicle. The H1's brakes are four-wheel (halfshaft axles) discs mounted inboard at the differential. In the rockcrawling world, most builders that have adopted portal axles are motivated by the ground clearance. They are often used for large and heavy vehicles, where the wheel diameter already gives adequate ground clearance. Bolt-on portals (or drop boxes) are a housing with a set of gears which bolts onto the final flange of the axle tube.



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