The Truth About How Portals & Gears Work 

There are trade-offs with both. Helical gears produce axial force which causes significant wear on a daily driver in a portal gear. The "transmission" example isn't an apples to apples comparison because transmissions are designed to buffer axial torque thrust. A more relative comparison is quick change rear ends. You can run these with helical "street" gears, however this generates significant wear on the housing and bearings/bushings due to the axial thrust. Straight cut gears will have less maintenance and the system will last longer. So you have a choice of wear or noise.

Show us where 74 weld hurt you. 😢

i am not much of the noise or so but what i see using portals is the quickest way to lift your truck or vehicle leaving the stock design of your front and rear axles..

Marks 4WD (AUS), Werewolftech are excellent world-wide proven portals as well, both have been fitted to literally thousands of vehicles.

For all the lead up to these Tibus portals and all the talk about how much better than 74 they are, we better see them survive some serious bronc busting otherwise your street cred is toast dude

Pete Jackson geardrive is a great example of the noise that comes with spur gears. With that said, most people don't typically care about noise if they are willing to spend that kind of money to do this serious of offroading. Portals are cool and a great system, but most people will not spend the money for them. This is a good discussion, but once again, this will still be a personal preferrance when it comes to the purchase. Much like Holley vs. Edelbrock, or Chevy vs. Ford.

I appreciate this video, but from my perspective you're coming at it from the wrong angle. I have heard videos of the 74Weld solution, and it's ten thousand times less noisy than the straight cut gearbox on my vintage race car. In my opinion, the noise (though yes it is a factor) is the least of the issues between these two designs. I would like to discuss strength, longevity, packaging, ease of maintenance, installation, performance etc. It seems like helical cut gears come out on top in that discussion as well, but I'd like to understand why. Also I feel like a lot of this discussion when using a transmission as a point of reference is misleading, or even irrelevant because the purpose of a transmission is to allow the user to change the gears. A portal has no such function, and should therefore be approached as a completely different engineering problem. Which I think both companies have done, but the discussion just seems stuck on it. I really love this video though, thanks for spending the time and putting it together. Austin is the man.

This is an interesting discussion. I dont have portals or a bronco. One thing that i think would be interesting is comparing the 2 side by side or a diagram of the 2. If you're comparing one to the other, i suppose it could be argued that the 74 weld is stronger even with its straight cut gears if you compare the actual size or count of the gears in each. It sounds like you guys are saying the tibus is the superior product for strength and longevity i think it would be interesting to see the 2 side by side maybe? I feel like saying if its good enough for racing its good enough for daily driving is a very douchey statement i cant really think of a better way to sum up that statement. I feel like someone whos never raced would make a statement like that. I have some experience with racing both dirtbikes especially pitbikes and in cars/offroad and your constantly taking stuff apart and doing maintenance and replacing things after a low number of hours and changing oil after every race etc.. you have parts with high performance and limited lifespan. Then on the other hand some race components are much better than daily driver components i have some "race" performance parts on my jeep but its built for long term reliability its also a high maintenance vehicle. I guess if i were to choose between these 2 products I'd look at the cost to run and what i can use it for and relative strength like is it strong enough it doesn't matter which is stronger necessarily as long as its strong enough i dont typically say that but its true. I the 74 weld product is going on a street driven vehicle and it needs maintenance like oil changed quite often and inspected I'd lean towards the tibus. Id be upset if i had to constantly maintain portals then they started to howl louder and louder. Has anyone proven you can drive the straight cut gears on road reliably for a reasonable amount of time between maintenance intervals? Maybe they both last just fine with similar maintenance but one is just louder and maybe someone wouldn't mind louder if it really is a little stronger? Then maybe one has a feature or two thats better or is more refined. From the discussion it sounds like tibus is the more refined model. Anyways this was really interesting and even though i dont own a bronco or have plans for portals i would enjoy seeing more on this topic i think its very interesting. Id maybe even look and see what design volvo or Mercedes uses in their portals if its relevant i feel those those 2 companies have a lot of experience with portals.

Why did you not mention werewolf portals?

I hear you guys just bashing 74 weld. I have seen then in person. They are completely silent. They came out with the Bronco before the Jeep or Toyota, not the other way around.

For $25K I would expect them to be running a herringbone or double helix cut on their gears, and if not, I would expect them to at least capitalize on that considerable axial thrust with torque meters for each hub. Also, where's the CTIS?

yes again great info accurate info and real world info

Interesting but I really think that you need to put your money where your mouth your mouth is on a comparison the 74Welds don’t make any noise going down the road and for you to say one is better than the other without an actual side by side comparison just a computer mock up is bogus. And to use a Honda transmission as a comparison or reference is ludicrous.

(these statements about being loud are) crap. not good enough for the road? portals are for large tires. the tires will drown you out way before the portals.

If companies are making Portals for lots of vehicles why then aren't they producing casts? Machining every single part just seems wasteful. But I guess they are passing the cost on to the consumer because the consumer is paying the price. Just seems a huge waste and limits the number who buy Portals.

The future will be 4 wheel hub electric motors . No diffs. No axles . Torque steer and pivot. All the advantages of EVs (go under water , no power loss at elevation, less brush fire risk no hot exhaust , no t case shifting , no transmission gears ⚙️, no reverse gear , no drive shaft or oil pan to hit, regen braking, no air filter , no sounds scaring away deer 🦌, ultimate silence, run ac or heater parked , no “idle “ engine ).

How much was tibus kit for the bronco