The annual Alxa Off-road Festival is a perfect time for off-road manufactories showing their muscle. And for sure, AT won’t miss it. By bringing the Wrangler JK with portal axles here, we have received well attentions & discussions. Apart from the portal axles, the lower support arms, shocks and chassis guards installed on the car ares all designed & developed by our team.
After 3 years’ R&D and 2 generations products, AT Wrangler's portal axles has gone through 500,000 times full-loading meshing tests and more than 20,000 KM of pavement road and off-road test including desert, mud and gobi. There are 6 Wranglers modified with AT’s portal so far and 3 of them have attended this festival.
On the third day after the game, we received nearly 800 orders
This red Wrangler is one of the most popular 4*4 off-road vehicles on all platforms. Its lifted 8-inche. From the beginning to the end of the alashan 4*4 off-road meeting, Many people ware attracted and take photos with it. In the place where this star-modified car is gathered, it is really not easy to get everyone's affirmation.
The orange Wrangler with portal axles as the competitor car has successfully finished the T3 level Challenge, without any mechanical breakdown. Before the festival, this car has been test in various extrem conditions from Yongding river, Kubuqi desert and luYa Jungle.
The blue Wrangler belongs to Vergile-Li, boss of Nanjing Songda Club. He has participated in the stone pile climbing challenging, and successfully completed the T1 stage. As usual, no mechanical fault occured.
ABOUT PORTAL AXLE
Portal axles might not seem terribly common, but it depends where you look. Sure, precious few road-going production vehicles boast portal axles, but this set-up is popular when it comes to military, farming and construction vehicles. Portal axles are common when it comes to tractors and front-end loaders, and US Military Humvees also have them, to name a few pervasive examples. Why is this? Well, as it turns out, these vehicles have a lot of the same requirements that pukka 4×4s have. They need good ground clearance, they sport huge tyres, and the nature of the work and the environment places huge stress on their components. Portal axles are a good way to address all of these issues, which is why some serious off-road enthusiasts make use of them.
To install the At’s portal axle, no extra cutting and welding works needed. You can install it within 3 hours and achieve the result by lifting the chassis 115mm (4.5 inches).
HOW PORTAL AXLES WORK
The standard axle you’ll find on a bakkie or SUV simply runs straight into the wheel. This is an efficient system for most vehicles, but for big-wheeled vehicles that operate under extreme conditions, it places too much stress on the axles and CV joints. Consider the following: if you take a 4×4, which has been fitted with large wheels (35-inch ones or bigger) and given an engine boost, for some extreme low-range driving on a tough trail, it can experience 2000% more torque/load than it would on the highway. You could, of course, fit a more robust axle and CV joints, but at a certain stage, it becomes impractical. There’s a limit to how big and heavy these components can be, and they’d need to be massive to deal with that sort of load on a regular basis. To sidestep this issue, some commercial and military vehicles are fitted with portal axles. Unlike your typical axle, the tube of a portal axle sits above the centre of the wheel hub. Connecting this tube with the wheel is a hub that contains reduction gears. Small gears are driven by the axle, and these gears in turn rotate a larger gear that turns the wheel. By transferring the torque in this way from a (relatively) small axle to a large gear in the hub, the axle torque can be increased by around 200%, while keeping the stress on the axle relatively low.