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Old 08-19-2013, 11:12 AM   #1
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These axels!!

http://www.dynatrac.com/products/axles/portals.html
Anyone seen these yet? I want them so bad!

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Old 08-19-2013, 11:33 AM   #2
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Those are neat, but would seriously limit the kinds of suspension you can run... It'd be like running a 6" lift with stock suspension capabilities. Yeah you gain a bunch of ground clearance, but I don't think it's worth it unless you want to build your jeep like something with independent suspension.

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Old 08-19-2013, 11:43 AM   #3
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wow, definitely sweet axles but i'm thinkin they'll carry a sweet price as well haha...

i'll stick with my ford 8.8 rear and chromoly shaft front.
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Old 08-19-2013, 11:56 AM   #4
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Those are neat, but would seriously limit the kinds of suspension you can run... It'd be like running a 6" lift with stock suspension capabilities. Yeah you gain a bunch of ground clearance, but I don't think it's worth it unless you want to build your jeep like something with independent suspension.
Why would it have to be like independent?
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Old 08-19-2013, 12:26 PM   #5
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Those are neat, but would seriously limit the kinds of suspension you can run... It'd be like running a 6" lift with stock suspension capabilities. Yeah you gain a bunch of ground clearance, but I don't think it's worth it unless you want to build your jeep like something with independent suspension.
Huh? These are normal solid axles like we all run but are simply raised up with the portals to offer better ground clearance. Nothing is different suspension wise and these can only help you offroad. Its actually the opposite if what you said. The portals lowering the hubs allow a smaller suspension lift to be used for a larger tire size. Big money, good stuff.
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Old 08-19-2013, 12:50 PM   #6
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Huh? These are normal solid axles like we all run but are simply raised up with the portals to offer better ground clearance. Nothing is different suspension wise and these can only help you offroad. Its actually the opposite if what you said. The portals lowering the hubs allow a smaller suspension lift to be used for a larger tire size. Big money, good stuff.
This
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Old 08-19-2013, 01:04 PM   #7
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Huh? These are normal solid axles like we all run but are simply raised up with the portals to offer better ground clearance. Nothing is different suspension wise and these can only help you offroad. Its actually the opposite if what you said. The portals lowering the hubs allow a smaller suspension lift to be used for a larger tire size. Big money, good stuff.
That's what I thought
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Old 08-19-2013, 09:11 PM   #8
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Sorry, I guess I wasn't clear...


They give good ground clearance, but to me, wouldn't be worth it because you're raising your whole rig 6" and not getting any better suspension travel. (As you would gain travel with 6" lift springs) Make any sense? Still, they're neat.
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Old 08-19-2013, 09:16 PM   #9
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Sorry, I guess I wasn't clear...

They give good ground clearance, but to me, wouldn't be worth it because you're raising your whole rig 6" and not getting any better suspension travel. (As you would gain travel with 6" lift springs) Make any sense? Still, they're neat.
Makes perfect sense. I was confused by the original statement because actual flex or articulation doesn't do THAT much for you offroad. I've got all the flex I need but always drag my pumpkin over rocks. Leaf spring CJ's don't flex nearly as well as our coil spring TJ's but seem to perform just as well when set up with lockers. Articulation just helps keep the tires on the ground, so a lack of it is made up for by running lockers or being a skilled driver.

I do agree though for the price I could do a whole lot more to my jeep than spend all the money on one axle.
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Old 08-19-2013, 09:22 PM   #10
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Makes perfect sense. I was confused by the original statement because actual flex or articulation doesn't do THAT much for you offroad. I've got all the flex I need but always drag my pumpkin over rocks. Leaf spring CJ's don't flex nearly as well as our coil spring TJ's but seem to perform just as well when set up with lockers. Articulation just helps keep the tires on the ground, so a lack of it is made up for by running lockers or being a skilled driver.

I do agree though for the price I could do a whole lot more to my jeep than spend all the money on one axle.
What is the price I didn't see one?
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Old 08-19-2013, 10:09 PM   #11
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Sorry, I guess I wasn't clear...


They give good ground clearance, but to me, wouldn't be worth it because you're raising your whole rig 6" and not getting any better suspension travel. (As you would gain travel with 6" lift springs) Make any sense? Still, they're neat.
Id rather have the portals and a lower COG then standard axles with 6'' of lift.
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Old 08-19-2013, 10:15 PM   #12
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Portals are cool an all, but I wouldn't run them if they were given to me for free.
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Old 08-19-2013, 10:20 PM   #13
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They look nice, but think about the forces exerted on the axle at the control arm mounts with such a large pivoting point below the lowest control arm.
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Old 08-19-2013, 10:22 PM   #14
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They look nice, but think about the forces exerted on the axle at the control arm mounts with such a large pivoting point below the lowest control arm.
Which is exactly why I wouldn't run them. The design requirements are ridiculous and you'll still probably be going through suspension components very quickly.

Plus I can't help but see the portals themselves being a giant weak link in the system.
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Old 08-19-2013, 10:29 PM   #15
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While really cool tech, they do introduce a whole new ball game of suspension issues & logistics.

The control arm mount issue described is an easily addressed concern...just use thicker, more reinforced mounts.

I'm thinking more along the lines of the inherent increase in CoG, and a major loss in uptravel. Think about it like this - take a rig that normally runs 35s with 4" of lift, with about 5-5.5" uptravel. Now, sling these axles under it and change nothing else. Well, now you're fitting ~40-44s? 5" of lift just from the portals, and another 5" from the tires...about.

Where ever your CoG was before with 35s, now it's 10" higher. Imagine what width you need to put your CoG back where it was. Ok, now that your rig is even wider than an H1 or semi truck, try to fit down that same narrow tight trail where you rubbed your mirrors on trees.

Heck, look at that JK they show...appears to be stock springs or similar. 3.5" uptravel with 40s? Really, what's big tires and minimal suspension travel going to do for you?

That's just the tip of the iceberg. But don't get me wrong, portals do have their place.
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Old 08-19-2013, 10:44 PM   #16
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Don't really see them having to much of an issue just seen one and can't see it very well but looks like some intense shit

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Old 08-19-2013, 10:49 PM   #17
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Don't really see them having to much of an issue just seen one and can't see it very well but looks like some intense shit
in the first video, IMHO, you're not looking at the details...

I see coil bind in the rear axle on a small hill that a stock TJ/JK could do. The springs aren't very long, and there isn't a lot of axle travel going on there. width is of no concern, so it doesn't matter that it's wider than a school bus and shares a similar turning radius.

and in the 2nd video, that's a competition buggy...not relevant to a discussion about full bodied Jeeps. take that stuff to Pirate.
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Old 08-19-2013, 10:50 PM   #18
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I only watched part of the first video, and IMHO, you're not looking at the details...

I see coil bind in the rear axle on a small hill that a stock TJ/JK could do. The springs aren't very long, and there isn't a lot of axle travel going on there. width is of no concern on that course, so it doesn't matter that it's wider than a school bus.
The big boulder was cool right?
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Old 08-19-2013, 10:52 PM   #19
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I only watched part of the first video, and IMHO, you're not looking at the details...

I see coil bind in the rear axle on a small hill that a stock TJ/JK could do. The springs aren't very long, and there isn't a lot of axle travel going on there. width is of no concern on that course, so it doesn't matter that it's wider than a school bus.
Only seen a few vids but was just showin don't think they will break that easly I'm not big on the whole geometry of the suspension and how it all works and I am learning slowly before my jeep didnt even know what control arms and sway bars and the diff between coil or leaf..
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Old 08-19-2013, 10:57 PM   #20
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Old 08-19-2013, 11:12 PM   #21
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How about this build?
It's a marketing ploy for folks with big dreams and deep pockets.

Appears to be stock suspension with bolt up Fox shocks. As I said before, what good is ~3.5" of uptravel and 40s?

Look at 1:24 of that video, kinda hard to tell, but check out how close that drag-link is to the frame. Doesn't look like anybody full bump checked that.... Here's a write-up showing how it looks stock at full bump.

Maybe my eyes are playing tricks on me, but if you look at the promo stuff here, it looks like somebody even installed directional tires backwards.
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Old 08-19-2013, 11:25 PM   #22
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It's a marketing ploy for folks with big dreams and deep pockets.

Appears to be stock suspension with bolt up Fox shocks. As I said before, what good is ~3.5" of uptravel and 40s?

Look at 1:24 of that video, kinda hard to tell, but check out how close that drag-link is to the frame. Doesn't look like anybody full bump checked that.... Here's a write-up showing how it looks stock at full bump.

Maybe my eyes are playing tricks on me, but if you look at the promo stuff here, it looks like somebody even installed directional tires backwards.
That jk thread is really helpful I'm gonna have to check my measurements and brake lines and everything make sure it's all good at full bump and droop and so I can measure travel
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Old 08-19-2013, 11:42 PM   #23
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Originally Posted by jeepwayoflife View Post

Makes perfect sense. I was confused by the original statement because actual flex or articulation doesn't do THAT much for you offroad. I've got all the flex I need but always drag my pumpkin over rocks. Leaf spring CJ's don't flex nearly as well as our coil spring TJ's but seem to perform just as well when set up with lockers. Articulation just helps keep the tires on the ground, so a lack of it is made up for by running lockers or being a skilled driver.

I do agree though for the price I could do a whole lot more to my jeep than spend all the money on one axle.
Lockers will get you much further than open diffs, but once you start throwing in steep grades and loose rocky terrain, one or two wheels off the ground due to poor articulation won't move you anywhere, even fully locked.

I also wouldn't run them if they were given to me, though I would run dynatracs d60s if I had the money.
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Old 08-19-2013, 11:46 PM   #24
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Id rather have the portals and a lower COG then standard axles with 6'' of lift.
Ok, I exaggerated. The portals lower the hub 4.9". They would raise your cg more than a 4.9" spring lift because with portals, you're moving the axle housing up as well as the frame. In a spring lift, the axle remains in its original position while the frame moves to the same height as with portals.

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