Hey guys, I need some help.

I'm trying to decide if the racing beadlock wheels made by Bassett are suitable for my Jeep with 36" Swampers.

They are made for a 3200lb Winston cup car, that enters corners at 150-200 mph. Apparently the failure mode is such that, if exceeded, the cennter will tear away from the shell.

the centers are .250 thick, the shells .104, and the rings .130.

I'm wondering if the kind of stress they will see at 55mph to the trail, and off road, in my 4000lb Jeep will be too much or if they will be strong enough.

They are of course built for light weight.

I know they make a quality product, but I don't know if it will be suitable.

I ask because they are much cheaper to get here than to import from the US even the next best choice (which would be the Rockstomper I believe)

You can get them in the US for $90 each, your choice of backspacing (15x8)....assuming you have the right bolt pattern.

I would think they should be fine. The amount of stress created on the wheel of a cup car entering a corner at close to 200 mph
would be alot more than your jeep would see. That 3,200 lbs would increase exponentially. Also you jeep is only 800 lbs heavier than a cup car. Without creating a formula for it and calculating real numbers, I'd say go for it. $90.00 per wheel is cheap.

Originally posted by BillaVista

They are made for a 3200lb Winston cup car, that enters corners at 150-200 mph. Apparently the failure mode is such that, if exceeded, the cennter will tear away from the shell.



Hey Bill?

When was the last time you saw a Winston Cup car with bead locks?

Maybe NASCAR Dirt roundy round stockcars, but not 150-200 mph Winston cup cars.

The equation for the force required at between the ground and the car is
F=R*V^2*m

Where R is the radius of curvature V is the velocity of the vehicle and M is the mass of the vehicle.

I could make up numbers as to what the various radius's are and stuff but really .104 thick shells is and 1/4 inch centers is at least as thick as somw stock wheels, so you are pretty much done right there, you know that is the part that fails and you know it is as good as stock. Measure the thickness of your stock jeep wheels though I am just guessing on the thickness of a stock wheel having mounted many tires.

When was the last time you saw a Winston Cup car with bead locks?

yea...never that I can recall...but I'm not much of a racing fan, and really don't know IMCA from circle track from dirt track from stock car from NASCAR from.....

But I did think it was strange sounding, coz I have seen Winston Cup cars...but I didn't have the knowledge to question a guy who works at a "race car place".

Perhaps he just meant stock car....or more likely, the shell is the same as the non-beadlock that ARE used on Winston cup cars?

Anyone know what IMCA and WISOTTA stand for?

Gordon....I love it when you tell me what i want to hear..I'm off to get out the calipers.

Originally posted by Gordon
The equation for the force required at between the ground and the car is
F=R*V^2*m

Where R is the radius of curvature V is the velocity of the vehicle and M is the mass of the vehicle.



Your formula is wrong. <br>
It should be <br>
F=m*w^2*r
<br> w=v/r
<br> so F=m*(v^2/2)
<br>F= force, m= mass, r= radius, v= velocity

Originally posted by Weasel


Your formula is wrong. <br>
It should be <br>
F=m*w^2*r
<br> w=v/r


Correct so far.

so F=m*(v^2/2)

Nope, check your math.

F=m*a=m*(v^2)/r

Ya almost had it :)

Originally posted by Eric Ruhl


Correct so far.



Nope, check your math.

F=m*a=m*(v^2)/r

Ya almost had it :)

Arrgghh!! I knew that! Don't know why I put 2 down??

OK...so I know I ASKED for Engineers help...so I get what i asked for :D :rasta:

But.....Eric, Weasel, etc.....whadda ya think of the wheels....good to go or not??

Cheers,

Well, I don't know how many g's of cornering acceleration a Winston Cup car can pull, but you KNOW they have a serious margin of safety built into those wheels. The only way you'd tear that wheel off with a Winston Cup car would be to hit the wall or another car with it. Worst case lateral loading for you would be 1g max as you're on your way over onto your lid :flipoff2: No way you'd hit 1g in the corners with your rig on the way to the trail head. IMO I don't see any reason for concern with those wheels wrt cornering stress. FWIW, I'd be more comfortable running 200mph in a Winston Cup car on those wheels vs. the aluminum 589's I run on my Heep and yet I have no concerns at all with the 589's on my Heep.

The only concern I can see would be possible trail damage to the lock ring. Seems a bit thin for offroad use and one introduction with a rock might be all they can handle. Just an intuitive answer of course, I have no proof one way or the other. My suggestion? At least check out Rockstomper's new beadlocks if you want something affordable a rugged :beer:

Originally posted by Weasel


Arrgghh!! I knew that! Don't know why I put 2 down??

I don't know what I did either I just found the paper where I derived the formula and it is right on paper I guess I can't type. Oh well I guess that's what peer review is for.

Should be fine. Only used basset on the Re Max and Hooters car for the asphalt roundy round, and friends of mine that ran dirt roundy round beat the hell out of their rims, and I can't think of a rim failure off the top of my head.

Only time that we trashed a rim was from hitting the wall @ 150mph:D

Heres what I think of the forumla:flipoff2:
Cant' get data to plug into the formula, unless it's Newtonian data, whcih will just give him some more usless data:D

There still might be another problem besides strength.
I have talked to people who have used race designed bead locks, and some say they work and others say that a swamper bead is too thick for them, because they are waayy thicker than your average tire at the bead, so they don't mount up correctly, or can also just plain not fit.
Just something to think about. ;)

Ian-

I think you guys are right...the real concern is likely the ring durability, and or the ability to mount a Swamper and beat on it.

I noticed the MRT racing beadlocks are expressly disclaimed from off-road use...of course they have their opwn seperate (much more expensive) series of beadlocks for offroad.

I hate decisions....especially expensive ones.

I do like the Rockstomper rings, but am slightly concerned about the fact that the outer ring is just a flat ring, wheras others like the MRT have a lazy Z shape so the part that bolts to the inner ring sits flush against the inner ring, but there is still room for the bead.

I'm going to start another thread to ask Scott about that.