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Old 07-14-2014, 06:51 PM   #1
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Default Ouch

With any luck, DOT won't take him to the scale.
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Old 07-14-2014, 08:22 PM   #2
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whats the story gordy ?
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Old 07-15-2014, 12:13 AM   #3
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Supposedly a racer coming out of RMR raceways (Utah) this weekend. Reported that a tire blew out but I don't see any rim or spindle left.
Be interested in seeing what was on it for suspension and tires.
After my conversion I upgraded my 315's to 365. This allowed me to run less pressure but at the same capacity.
Wasn't cheap because I installed the wider ALCOA rim for the increased size but it sure rolls nice.
I really pays to scale all rv's so we know what is safe and what isn't.
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Old 07-15-2014, 05:52 AM   #4
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i just read this one the other day.....I'm still wondering what would cause this....and how no one was killed !




source --> http://2010liberty.wordpress.com/201...ge-of-scenery/
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Old 07-15-2014, 11:06 AM   #5
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just got some info from the coach owner regarding the above wheel.
I asked what he thought caused the wheel to be torn from the axle/hub & studs.

I also was asking for confirmation that the wheel was steel (looked like it but wanted to be certain).

We think probably the wheel was over tightened sometime in its life causing it to start cracking between the lug holes. Continued use just aggravated the situation until it broke. And yes, it was a steel wheel.
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Old 07-15-2014, 03:33 PM   #6
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That broken center is really not all that uncommon. Want to know the cause-look at the inner tire/wheel-FLAT. Rim is overloaded from the weight that should have been distributed over the dual.
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Old 07-15-2014, 04:25 PM   #7
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Quote:
Originally Posted by Gordy View Post
That broken center is really not all that uncommon. Want to know the cause-look at the inner tire/wheel-FLAT. Rim is overloaded from the weight that should have been distributed over the dual.
how can you tell that the inner tire is over loaded ? the inner tire is FLAT.

The accompanying story says the outer tire busted the inner tires valve stem when it came off.
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Old 07-15-2014, 06:57 PM   #8
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"Typically" this failure was caused by running the other tire flat. Okay he says that the inner went down when the outer separated but most cracked rims I saw where from flats, loose nuts or overloaded. (I put 40 years in wrenching on and off road equipment)
I realize that these are not aluminum rims but Alcoa has an excellent website with rim maintenance discussed in http://www.alcoa.com/alcoawheels/cat...al-English.pdf
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Old 07-15-2014, 08:15 PM   #9
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I trust what you're sayin' Gordy, i figured you hadn't seen the sorry. I've never seen a wheel like that - wonder someone wasn't killed. cant wait to look at the alcoa site, thanks.
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Old 07-15-2014, 09:38 PM   #10
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Don-not a problem. Take another look at the pic and notice that the bus had the older style budd wheel nuts, that use an inner and outer nut. This will keep the inner in place should the outer have this kind of failure.
Most newer vehicles are "unimount" style-that means the hub carries the weight and a single nut and integral washer (per stud) hold both rims in place. Real ugly when they part company.
Now if you overtorque these nuts and over stretch the bolts, they will break under the right circumstances-again an ugly situation.
These pics are examples why we should weigh our rigs, do a proper pretrip inspection and know a lot more than where to put fuel and how to start the coach.
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