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. Mason manufacturers their own portal hubs, and there are many distinctions from the Hummer portals used in rockcrawling. Geiser fitted 74Weld portals on the front of the Broncos to leverage the advantages both in the desert and in the rocks found at King of the Hammers. You must log in or register to reply here. It was nice to be able to run open until lockers were needed, then immediately switch to full lock-up when the obstacle was tough. Can an AMC 20 hold up in an H3? 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. All these vehicles performed their assigned missions well, but in wartime conditions, keeping such a variety of vehicles going could turn into a logistical nightmare. The Mason hubs are lightweight aluminum instead of cast iron, and they use four gears instead of two. I implied that if the difference in reality from 1860 is only 50RPM, I would be happy. When the hummer is moving forwards and you look at the cvs they are turning counter clockwise. The Adventure Package wheels are two-piece 17-inch aluminums, with an inner and outer bead lock and a Runflat device. Every product is carefully selected by our editors. 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 immediate benefit is increased ground clearance, but that is not the only advantage for those looking for an edge over the competition. 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.
One quick question for anyone. 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. Hope no one gets butt-hurt with this opinion but I've decided to add and support another option to those thinking of spending their money on aftermarket suspension options for the H3/H3T. The Cheetah was purchased by Teledyne, who included Lamborghini of Italy in its development (this is why Lamborghini's LM002 looks similar to AM General's Hummer). by SinDiesel Wed Mar 21, 2018 7:05 pm, Post We invite you to get behind the wheel with us, it's certain to be an interesting drive. Thus, the inverted portal axle allows the floor of the bus to be lowered, easing access to the bus and increasing the available cabin height. JavaScript is disabled. Thank you so much for sharing your calculations. The portals have one gear instead of two so that the rotation is corrected. Packaging portal boxes onto an existing vehicle was always a challenge due to concerns like oil pan clearance and suspension geometry. 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. We're all familiar with the H1 Hummer. The torque multiplication out at the hubs is an under appreciated benefit, Pultz explained. 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. Gittin is fresh off winning the 2021 Ultra4 Championship and doesnt plan to merely watch Healy from the sidelines. Sign up to receive marketing communications. Despite strict rules regulating wheelbase, suspension design and sheetmetal, the axles have always been fair game for upgrades. 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. I remember reading about them on piratearound 20k IIRC. 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. 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. But, while this truck, which is based on the Mercedes-Benz G-Class Gelndewagen, is weirdly, perfectly at home in the big city, it really belongs in the wilderness. 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. 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. The Runflat got us home. You kept stating you can't find a rear 2.56. Essentially, the axle rotates on a higher plane than the wheels, which allows, among other things, for higher overall ground clearance. We've used the same air compressor in other vehicles, but it seemed to work much faster in the H1. The civilian H1s then move to another building, where they are "civilized," optioned, and then shipped to dealers. 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. Great discussion but really, who is going to spend the money to mod an H3 this way? AM General subsequently won new contracts for additional vehicles. Upon further reflection, we realized the Humvee wouldn't be part of the military's lineup if it didn't work in the sand. Mine is 2350RPM in drive which I believe is a 1to1 ratio in the transmission.
by Action Fri Mar 23, 2018 3:01 am, Post Below, four things you must know about the portal axle, which also happen to be required knowledge for appreciating the Mercedes-Benz 44 squared. by SinDiesel Wed Mar 21, 2018 6:59 pm, Post 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. An available night-vision device was not included on our test H1, so we can't comment on how it performs. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. I stated that I had a 4 speed and 2.73 gears. The packaging with portals limited uptravel, Haines confessed, but the ability to carry speed through the rocks more than made up for this compromise.. You are using an out of date browser. Look for the latest news stories and features, sent straight to your inbox! 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. 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. 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. Since the class only allows a maximum of a 35-inch tall tire, the ground clearance offered by portals is a big benefit in the notorious rock trails of Johnson Valley. by dilvoy Thu Mar 22, 2018 11:19 pm, Post With what I have now, I still catch myself looking down at the shifter for another gear. 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. My question is if an H1 front diff would last in an H3Sounds crazy right!?! 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.
So put a front 2.56 in the rear. Its not like when we have taken a 10 bolt and tried to use it as a front low pinion. They are now found on many large quarrying dump trucks and heavy plant. For a better experience, please enable JavaScript in your browser before proceeding. Look at how fast the UTVs have gotten at King of the Hammers, Healy noted. The wide low-profile H1 works great off-road, as already stated. 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. The 1999 marketing agreement with GM hasn't diminished the H1 Hummer's toughness. Recognizing that every individual's motoring journey is unique, we seek to give form to both untold as well as celebrated facets of the automotive world. Bolt-on portals (or drop boxes) are a housing with a set of gears which bolts onto the final flange of the axle tube. While six designs were submitted to the Army, the three main players were Chrysler Defense (later sold to General Dynamics), Teledyne, and AM General. 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. 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 current H1 has improved creature comforts, although it still doesn't hide its military heritage. This reduces load on the axle crownwheel and differential. 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. 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. The Chrysler vehicle was an adaptation of the Saluki desert design. 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. 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. Portal axles (or portal gear lifts) are an off-road vehicle suspension and drive technology where the axle tube or the half-shaft is off-set from usually above the center of the wheel hub and where driving power is transferred to each wheel via a simple gearbox, built onto each hub. But, rememberthe two are seriously different housings. This content is imported from YouTube. From rock crawlers to trophy trucks, and now increasingly in purpose-built Ultra4 racing vehicles and more, portals are engineered to revolutionize off-road. I know. Just pointing them out. Its helical gear-reduction hubs allowed for top-mounted axles that provided a ground clearance of 16 additional inches. Despite the portal reduction, I think the H1 AMC-20 must be a pretty robust diff to survive in a super-heavyweight military vehicle. Next time we are in the H1 Ill try to take a quick video. A portal hub can be applied to either a solid axle or IFS, and in either case creates an offset between the axle shaft and the hub mounting surface through the use of a geared hub. by Action Fri Mar 23, 2018 6:32 am, Return to Humvee Technical Knowledge Base -, Users browsing this forum: No registered users and 6 guests. But the H1 front diff lasts because of the portals. Where a vehicle also requires a reduced top speed, in at least one gear, the gear ratio can be chosen to reduce this. The body is built from tough 6061 T6 hardened aircraft aluminum that seems to really be able to take a beating. The CTIS uses a tough 12-volt compressor under the hood that not only inflates the tires, but can be used for other needs around the camp. 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. We already mentioned the H1's underbody protection that runs the length of the vehicle. But, I was thinking, if you bringing the H1 diff, will it also be possible to bring in H1's axles and hubs. 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. One good point that SBuickGuy makesare H1's hi-pinion? While we may beat our 4x4s in the backcountry, we usually get home and perform needed repairs quickly.
Also standard is aluminum rocker-panel protection that wraps around the underside of the body and goes all the way to the frame. The Army's requirements were stringent. Those comments are understated. Ahhh. I even have polaroids pictures from that truck brand new that inspired me to build my tube buggy. More recently, Jesse Haines Fabrication has been building axle assemblies that use fabricated Ford 9-inch or Toyota 8-inch housings and third members with government surplus portal boxes from Hummers and lightweight brake assemblies.
One quick question for anyone. 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. Hope no one gets butt-hurt with this opinion but I've decided to add and support another option to those thinking of spending their money on aftermarket suspension options for the H3/H3T. The Cheetah was purchased by Teledyne, who included Lamborghini of Italy in its development (this is why Lamborghini's LM002 looks similar to AM General's Hummer). by SinDiesel Wed Mar 21, 2018 7:05 pm, Post We invite you to get behind the wheel with us, it's certain to be an interesting drive. Thus, the inverted portal axle allows the floor of the bus to be lowered, easing access to the bus and increasing the available cabin height. JavaScript is disabled. Thank you so much for sharing your calculations. The portals have one gear instead of two so that the rotation is corrected. Packaging portal boxes onto an existing vehicle was always a challenge due to concerns like oil pan clearance and suspension geometry. 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. We're all familiar with the H1 Hummer. The torque multiplication out at the hubs is an under appreciated benefit, Pultz explained. 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. Gittin is fresh off winning the 2021 Ultra4 Championship and doesnt plan to merely watch Healy from the sidelines. Sign up to receive marketing communications. Despite strict rules regulating wheelbase, suspension design and sheetmetal, the axles have always been fair game for upgrades. 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. I remember reading about them on piratearound 20k IIRC. 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. 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. But, while this truck, which is based on the Mercedes-Benz G-Class Gelndewagen, is weirdly, perfectly at home in the big city, it really belongs in the wilderness. 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. 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. The Runflat got us home. You kept stating you can't find a rear 2.56. Essentially, the axle rotates on a higher plane than the wheels, which allows, among other things, for higher overall ground clearance. We've used the same air compressor in other vehicles, but it seemed to work much faster in the H1. The civilian H1s then move to another building, where they are "civilized," optioned, and then shipped to dealers. 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. Great discussion but really, who is going to spend the money to mod an H3 this way? AM General subsequently won new contracts for additional vehicles. Upon further reflection, we realized the Humvee wouldn't be part of the military's lineup if it didn't work in the sand. Mine is 2350RPM in drive which I believe is a 1to1 ratio in the transmission.
by Action Fri Mar 23, 2018 3:01 am, Post Below, four things you must know about the portal axle, which also happen to be required knowledge for appreciating the Mercedes-Benz 44 squared. by SinDiesel Wed Mar 21, 2018 6:59 pm, Post 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. An available night-vision device was not included on our test H1, so we can't comment on how it performs. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. I stated that I had a 4 speed and 2.73 gears. The packaging with portals limited uptravel, Haines confessed, but the ability to carry speed through the rocks more than made up for this compromise.. You are using an out of date browser. Look for the latest news stories and features, sent straight to your inbox! 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. 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. 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. Since the class only allows a maximum of a 35-inch tall tire, the ground clearance offered by portals is a big benefit in the notorious rock trails of Johnson Valley. by dilvoy Thu Mar 22, 2018 11:19 pm, Post With what I have now, I still catch myself looking down at the shifter for another gear. 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. My question is if an H1 front diff would last in an H3Sounds crazy right!?! 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.
So put a front 2.56 in the rear. Its not like when we have taken a 10 bolt and tried to use it as a front low pinion. They are now found on many large quarrying dump trucks and heavy plant. For a better experience, please enable JavaScript in your browser before proceeding. Look at how fast the UTVs have gotten at King of the Hammers, Healy noted. The wide low-profile H1 works great off-road, as already stated. 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. The 1999 marketing agreement with GM hasn't diminished the H1 Hummer's toughness. Recognizing that every individual's motoring journey is unique, we seek to give form to both untold as well as celebrated facets of the automotive world. Bolt-on portals (or drop boxes) are a housing with a set of gears which bolts onto the final flange of the axle tube. While six designs were submitted to the Army, the three main players were Chrysler Defense (later sold to General Dynamics), Teledyne, and AM General. 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. 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 current H1 has improved creature comforts, although it still doesn't hide its military heritage. This reduces load on the axle crownwheel and differential. 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. 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. The Chrysler vehicle was an adaptation of the Saluki desert design. 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. 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. Portal axles (or portal gear lifts) are an off-road vehicle suspension and drive technology where the axle tube or the half-shaft is off-set from usually above the center of the wheel hub and where driving power is transferred to each wheel via a simple gearbox, built onto each hub. But, rememberthe two are seriously different housings. This content is imported from YouTube. From rock crawlers to trophy trucks, and now increasingly in purpose-built Ultra4 racing vehicles and more, portals are engineered to revolutionize off-road. I know. Just pointing them out. Its helical gear-reduction hubs allowed for top-mounted axles that provided a ground clearance of 16 additional inches. Despite the portal reduction, I think the H1 AMC-20 must be a pretty robust diff to survive in a super-heavyweight military vehicle. Next time we are in the H1 Ill try to take a quick video. A portal hub can be applied to either a solid axle or IFS, and in either case creates an offset between the axle shaft and the hub mounting surface through the use of a geared hub. by Action Fri Mar 23, 2018 6:32 am, Return to Humvee Technical Knowledge Base -, Users browsing this forum: No registered users and 6 guests. But the H1 front diff lasts because of the portals. Where a vehicle also requires a reduced top speed, in at least one gear, the gear ratio can be chosen to reduce this. The body is built from tough 6061 T6 hardened aircraft aluminum that seems to really be able to take a beating. The CTIS uses a tough 12-volt compressor under the hood that not only inflates the tires, but can be used for other needs around the camp. 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. We already mentioned the H1's underbody protection that runs the length of the vehicle. But, I was thinking, if you bringing the H1 diff, will it also be possible to bring in H1's axles and hubs. 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. One good point that SBuickGuy makesare H1's hi-pinion? While we may beat our 4x4s in the backcountry, we usually get home and perform needed repairs quickly. Also standard is aluminum rocker-panel protection that wraps around the underside of the body and goes all the way to the frame. The Army's requirements were stringent. Those comments are understated. Ahhh. I even have polaroids pictures from that truck brand new that inspired me to build my tube buggy. More recently, Jesse Haines Fabrication has been building axle assemblies that use fabricated Ford 9-inch or Toyota 8-inch housings and third members with government surplus portal boxes from Hummers and lightweight brake assemblies.