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Staun OFFROAD Internal Bead Locks Set of 4 x 16"x 7-9w

We have every size in listed! NEW MODEL WITH WARRANTY

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Other item info
Item number:370238091847
Item location:Moreton, Australia
Posts to:Worldwide
History:5 sold
Item specifics
Product Type: Exterior AccessoriesManufacturer: Staun Racing
Exterior Accessory Type: 4x4 AccessoriesCondition: New

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All NEW Model Australian Made 4WD Staun Internal Bead Lock for OFFROAD driving 4X4!

 

The latest Staun Product to take the off road world by storm is the Staun Internal Bead Lock. The new and improved air channel AUSTRALIAN MADE model Beadlock is here!

Download Instructional Video 
New Air Channel Instructional Video

 Installation Instructions 
click here to download instructional install booklet


 Download Tips & Techniques 
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 Download PDF instructions for new Bead Lock


When driving offroad it is usual to lower your vehicles tire pressure for two reasons:

1. For Comfort and a smoother ride 
2. To lengthen or enlarge your tire’s footprint to give you greater traction.

Benefits of using the Bead Lock:



However, tire pressures below 18 psi run the risk of the tire either rotating on the wheel rim or worse, it allows the tire to completely deflate and come off the rim. These occurrences can lead to the problem of dirt and mud entering the inner air chamber and causing resealing tire bead problems.

Staun Products' Internal BeadLock™ is creating a low tire pressure revolution, and I'll tell you why throughout. Words alone don’t do this product justice. Even if you don’t read on, take a look at the pictures. They are very impressive!

If you play in the dirt long enough, you will eventually encounter rim- , tire-, bead-related problems. Popping the beads off the rims is relatively commonplace. While playing and learning about sand years ago, I actually popped four beads at one time! I was side-hilling. I lost the two outside beads on the downhill side, and the two inside beads on the uphill side.

Another problem is spinning the tires on the rims. That results from too much traction and torque, and not enough friction between tire and rim due to low tire pressure. These annoyances are expected by the folks that regularly play on the Black Diamonds. Up until now, they counter these rim/tire/bead predicaments in several ways. However, Staun's BeadLock™ may make bead-related problems a thing of the past at any pressure.

The Black Diamond guys may (1) install conventional bead locks or (2) sacrifice performance by running higher "low" pressure than they really want. They may also (3) choose to live with rim/tire spin and get the wheels rebalanced every so often. For intermittent air "burping," they usually just (4) add air along the trail and get used to reseating the beads when they completely knock 'em off.

Staun Products' pneumatic Internal BeadLocks keep the beads in place and tightly secure the tires to the rims. This means that you can run exactly the low pressure you want, and as our tests proved, with no fear of popping a bead or spinning the tire on the rim. Isn't that worthy of being called a low pressure revolution? And not to beat it to death, are you aware that there are very light weight competition rock crawlers that run zero, repeat, zero PSI in their tires! They, along with every guy who owns 16.5” wheels, need a low pressure revolution!

Staun Internal BeadLocks provide a way to lock both the inside and outside tire beads to the rim. No special rims are required. Staun has sizes to fit everything from 9 inch ATV/Quad rims to behemoth 19 inchers!

DESCRIPTION

A fully LOAD RATED inflated tire stands a 99% chance of having none of the problems described above. Period! In other words, when properly inflated, the tires do their job perfectly. That is because high (street) pressure securely locks the tire bead against the rim and eliminates air loss and tire/rim spin. The bead/air loss thing appears to be borne out by the roll tests I've conducted. I've side tilted 5,000 pound 4Xs, to greater than 45°, with fully inflated tires, and never unseated a tire bead or lost any air (see Figure 2).



Wouldn't it be perfect if we could apply high pressure right at the tire's beads, independent of the pressure in the balance of the tire? Staun's Internal BeadLock™ does exactly that. It is literally a specially reinforced mini-tube right next to the bead. By the way, I use "wheel" to mean the tire (rubber part) mounted on the rim (metal part).


This situation is easily overcome by fitting the Staun Internal Bead Lock, a pneumatic bead lock that fits inside the tire. The Staun Internal Bead Lock holds both tire beads onto the wheel rim via a separate low profile tube that inflates to lock the tyre beads. An easily installed special valve is fitted to the normal air valve hole to inflate the tube.

Now you have two separate air pressures, allowing you to control with confidence the pressure you wish to run in the tire. Our tests showed that even with zero pressure the tire stayed in position and full control of the vehicle was maintained while also cushioning the tire from the rim and minimising tire damage.

The Staun Internal Bead Lock provides distribution completely over and around the wheel rim inside the tire, presenting no problems with wheel balance and being inside the tire, it is unaffected by weather or damage by rocky terrain. The Staun Internal Bead Lock can easily be fitted to most one piece steel rims and tubeless tires. 

Used in conjunction with the Staun Tyre Deflators, you have a complete tyre protection and deflation system for any offroad vehicle. Price shown is for a set of 4.

AVAILABLE SIZES: Sizes are available in every inch up to 20d x 10". Other available sizes and part numbers below and available:

AVAILABLE SIZES

Part No Rim Size (Inches)
   
SBLNC1279 Suit 12 in rim x 7-9 in wide
SBLNC1479 Suit 14 in rim x 7-9 in wide
SBLNC156 Suit 15 in rim x 5.5-6 in wide
SBLNC1579 Suit 15 in rim x 7-9 in wide
SBLNC 159.510 Suit 15 in rim x 9.5-10 in wide
SBLNC151112 Suit 15 in rim x 11-12 in wide
SBLNC166 Suit 16 in rim x 6-6.5 in wide
SBLNC1679 Suit 16 in rim x 7-9 in wide
SBLNC169.510 Suit 16 in rim x 9.5-10 in wide
SBLNC161112 Suit 16 in rim x 11-12 in wide
SBLNC16.579 Suit 16.5 in rim x 7-9 in wide
SBLNC16.59.510 Suit 16.5 in rim x 9.5-10 in wide
SBLNC1779 Suit 17 in rim x 7-9 in wide
SBLNC179.510 Suit 17 in rim x 9.5-10 in wide
SBLNC171112 Suit 17 in rim x 11-12 in wide
SBLNC1879 Suit 18 in rim x 7-9 in wide
SBLNC2079 Suit 20 in rim x 7-9 in wide
SBLNC209.510 Suit 20 in rim x 9.5-10 in wide

    

 

 

 

DESIGN PRINCIPLE

Very simply put, a Staun Internal BeadLock™ divides the innards of a tubeless tire into two air chambers. The one nearest the beads holds rubber to metal. This means the remainder of the tire's air space can confidently be inflated or deflated to any pressure you desire baring blowing it, up of course. 

So how does a conventional bead lock differ?

CONVENTIONAL VERSUS STAUN'S BEAD LOCK



Conventional bead locks mechanically clamp the outside tire bead to the rim, always, and rarely, the inside. They do a 100% perfect job at that. Staun Internal BeadLock locks both the inside and the outside beads to the rim. Although it is less common to lose the inside bead, it nevertheless happens. Proof in point: Prior to installing Staun Internal BeadLocks, Blaine Johnson was used to regularly and undesirably burping air out of a rear, conventionally bead locked wheel. With the Stauns, the problem vanished.

Conventional bead locks can be difficult to balance. As Figure 3 shows, the conventional bead lock puts all of the weight on the outside of the wheel, only. That's typically a ring plus 24 cap screws and washers. This could make for balancing problems. But on the plus side, this ring protects the vulnerable valve stems.

Staun Internal BeadLocks are light weight (about 5 pounds for fifteen inchers) and the weight is evenly distributed from the inside to the outside of the rim. Further, since some of the weight is nearer the center of the rim, it minimizes imbalance effects. There are no balancing problems with Staun BeadLocks.

If you drive on a conventionally bead locked flat, you stand a good chance of damaging the rim, tire or both. The Staun BeadLock tube and case add height to the flat as if it were not flat, and in fact, that is actually what’s happening. A portion of the tubeless cavity still contains air at high pressure and keeps the rim off the ground. It does not let the rim pinch the tire at the ground (see Figure 4).

BEADLOCKS SAFER

From what's been reported from down under, they may even make controlling highway blowouts more manageable. One mate reports that he unknowingly drove 20 km (~12 miles) at 100 kph (~ 66 mph) on unnoticed front flat. The tire was thrashed, but the rim survived. What's really amazing to me is that the driver was unaware of his problem until it was flagged by a friend on the highway. That appears to make a flat pretty controllable. The inflated BeadLock™ adds a “pneumatic” two or three inches between the rim and the ground, as above, thereby making it easier and safer to pull to the side of the road or trail (Figure 4). This should save your rims, if not the tires, too. More experience will confirm or deny this.

HOW IT WORKS

.

As the BeadLock's tube (above) inflates through its own valve stem, (shown right), it expands until it reaches the limits of the polyester reinforcing case assembly (all shown above, left). The hefty polyester case top keeps the tube “down” thereby dictating a very low profile. This in turn leaves the remainder of the tire (tire air chamber) to be inflated to your desired pressure. This space accommodates low pressure flex as needed.

Note the air pressure force arrows (above right). That force, all the way around, at the beads, is countered by a force at the rim. These two forces pinch the tire beads to the rim, both inside and outside.

A conventional tubeless tire secures the beads to the rim in the same way, but surprisingly enough, the Staun Internal BeadLock™, in conjunction with the tube and case assembly, also take advantage of the holding forces above and below the bead, not just at the bead. The tube and case surround the bead, top to bottom and left to right, bringing all of these forces together to act like a strap. This provides additional bead holding force. It is also why one tire expert recommends that you run tubes in tubeless tires if you air down. 

Without the BeadLock™ tube, as with a conventional tubeless tire, the lower portion of this "strap" is missing. The top part of the strap is there by virtue of the tire, but there is nothing beneath the bead to complete the “strap effect.”

If you are wondering how the air gets in and out of the tire air chamber, you’re very sharp! Without what’s shown just above, the tube would cap shut the regular valve stem shown. This picture shows how an air channel is created by the air channel walls and another piece, the air channel floor, not seen. Also be aware that the tire (bead) is not shown for clarity.

Check the size drop down box at the bottom of the page for pricing. Prices shown are for a set of 4.


 

Beadlocks

Email us at service@wildearth.com.au for a price on a different size or check out our store for a different size.  You will find every size in our store.

We have more great staun products in our store. Check out my other items

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  • Australian Made 
  • Bead Locking System for deflating tyres
  • Pneumatic
  • Lightweight
  • Easy to Fit
  • Does not affect wheel balance
  • Both beads secured
  • Fits on any rim
  • Maximises your tyres full potential
  • Safer offroad driving
  • Less wear and Tear
  • Long Lasting
  • 12 month Warranty 

     

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