abn deuce Posted March 2, 2010 Share Posted March 2, 2010 (edited) This clip was linked on another forum I am a member on and felt that it should be posted here right away . Its a safety video produced by Bridgestone tire about the hazards of welding or applying heat to a tire rim combination , It is shocking how dangerous this is . If for example your were to try and loosed rusted lugnuts with a gas torch even that can lead to explosive tire failure . Something went wrong... Edited March 2, 2010 by abn deuce correct text Quote Link to comment Share on other sites More sharing options...
N.O.S. Posted March 2, 2010 Share Posted March 2, 2010 abn - post of the year prize for you!! :thumbsup: You MUST watch this video past the point where the tyre explodes to understand WHY it is so dangerous. I've always known it was dangerous, but not for the right reason :wow: The really frightening thing is the revelation that removing the valve turns out to be a totally inadequate precaution. Quote Link to comment Share on other sites More sharing options...
Bodge Deep Posted March 2, 2010 Share Posted March 2, 2010 Wow! Thats very sobering, not a danger I was even aware of :shocked: Quote Link to comment Share on other sites More sharing options...
ferretfixer Posted March 2, 2010 Share Posted March 2, 2010 abn - post of the year prize for you!! :thumbsup: You MUST watch this video past the point where the tyre explodes to understand WHY it is so dangerous. I've always known it was dangerous, but not for the right reason :wow: The really frightening thing is the revelation that removing the valve turns out to be a totally inadequate precaution. Yes, you would have thought that removing the valve would prevent all of this! Only way is, if you HAVE to do work on a wheel. MAKE SURE IT DOES' NOT HAVE A TYRE ON THE RIM! In the Army, after replacing a tyre on a rim, the wheel has to rolled into a very sturdy cage to inflate it. Even if it HAS been correctly installed Etc. Safety is PARAMOUNT when dealing with tyres! The pressures involved in just inflation can produce lethal results if EXTREME care is not observed! Quote Link to comment Share on other sites More sharing options...
griff66 Posted March 2, 2010 Share Posted March 2, 2010 (edited) we were taught only to approach a hot wheel from the front or rear never the side incase bolts holding wheel halves failed boeing 777 main wheel inflation pressure-118 p.s.i the 380 would have carbon fiber brake pack. on a aircraft wheel there are pressure relief plugs that will melt and release pressure if excessive Edited March 2, 2010 by griff66 Quote Link to comment Share on other sites More sharing options...
gritineye Posted March 2, 2010 Share Posted March 2, 2010 Who hasn't seen wheels with the lug nuts torched off and the tyre still on in scrapyards, farms and the like? Just shows how lucky some people are, good post thanks abn. Quote Link to comment Share on other sites More sharing options...
N.O.S. Posted March 2, 2010 Share Posted March 2, 2010 on a aircraft wheel there are pressure relief plugs that will melt and release pressure if excessive That's saved me some wasted time - I was just thinking of looking at the possibility of patenting a truck or other tyre valve insert which would relieve excessive pressure, but a fusible plug is a much better solution. Wonder why they don't fit them as standard on truck rims? Cost would be minimal. Might have saved the life of one tipper driver in East Anglia last year who had brake trouble - when he got out to look at the tyre it exploded and blew him into the dual carriageway. Oh well, no point in re-inventing the wheel. Pun intended :whistle: Quote Link to comment Share on other sites More sharing options...
Gordon_M Posted March 2, 2010 Share Posted March 2, 2010 The heat and pressure buildup after a relatively small amount of input was - interesting. I certainly won't be doing that. :-( Quote Link to comment Share on other sites More sharing options...
radiomike7 Posted March 2, 2010 Share Posted March 2, 2010 I wonder if this only applies to certain tyres, or rather the mix of ingredients in certain tyres? I have seen artic trailer wheels that have got so hot from a sticking brake that the paint has burned off right up to the tyre bead but without the tyre exploding. Antarmike had quite a bonfire on his Dyson but again no explosion. Some time ago on the M6 one of our girlie drivers had a N/S front blowout on an artic. As it was 2AM plod came and sat with her for about half an hour until the tyre fitter arrived and began to jack the axle up. Suddenly there was a mighty rush of air and the tyre turned into a roaring inferno which promptly gutted the truck. Quote Link to comment Share on other sites More sharing options...
N.O.S. Posted March 2, 2010 Share Posted March 2, 2010 (edited) I wonder if this only applies to certain tyres, or rather the mix of ingredients in certain tyres?..... Exactly - by rights I shouldn't be here now, nor several others I know :shocked: Typical example - a haulier's fitter borrowed our cutting gear one day to cut the U bolts off a Leyland 8 wheeler rear 2-spring bogie to replace the leaf. Now that is very close to the tyres. I did suggest something to him and he ignored it, so I kept out of the way. Like lots of things, you can get away with it time after time after .......BANG Edited March 2, 2010 by N.O.S. Quote Link to comment Share on other sites More sharing options...
Tony B Posted March 2, 2010 Share Posted March 2, 2010 That's the scariest thing I've seen in a long time! How often have we all dragged vehicles or trailers with a sized wheel? As pointed out, even if apparently deflated, there is still air in there! Quote Link to comment Share on other sites More sharing options...
mike65 Posted March 2, 2010 Share Posted March 2, 2010 I new you could have problems with heat and tires but did not realise how little heat you actually could need and the delay that can occur. Makes me feel lucky that nothing happened when I drove 10 miles with a siezed brake caliper on an old Cavalier. Was glowing very nicely and melted the wheel trim. Quote Link to comment Share on other sites More sharing options...
R Cubed Posted March 2, 2010 Share Posted March 2, 2010 OMG :wow: One to tell all my friends about, interesting thing is he goes on about a chemical reaction so what is involved to cause this. My thoughts are as above, I have seen car fires ect and no tyre problems, I have had sticking brakes and no tyre explosion, must have been lucky. Maybe its new modern tyres which may have other chemicals in the composition of the tyre which don't like heat. Could be why you see so many truck tyres on the hard shoulder with no side walls, run a bit flat this generates some heat the chemical reaction starts pressure increases and bang goes the tyre. Still a remarkable demo to see how little heat was applied and the result after only 3 mins going to be very wary of tyres in the future. Quote Link to comment Share on other sites More sharing options...
philb Posted March 2, 2010 Share Posted March 2, 2010 I witnessed an incident that may well have been due to this effect. On holiday in the USA (that's relevant for the next bit) a motorhome towing an car (unmanned, on an A frame) pulled in to the rest area we had stopped at and after no more than a minute there was a gert bang - much too loud to have been a gun, the prime candidate in that part of the world. One of the car's front tyres had exploded leaving almost no trace of it. It turned out that the car's brakes had been partially applied for many miles due to a fault in the electric brake servo which was slaved to the motorhome. It soon attracted a good crowd and despite my protests they would not keep away from the other wheels, all of which were obviously very hot. Even though I'd never heard of pyrolysis, I though there was a fair chance the others would go the same way. Nothing more happened but having seen the safety video I think we were all quite lucky. The motorhome owner thought he'd get away with just one new tyre. Oh yes - four tyres and wheels and brakes and hubs and some suspension parts, it was well cooked. At least they had somewhere to stay. Quote Link to comment Share on other sites More sharing options...
LoggyDriver Posted March 2, 2010 Share Posted March 2, 2010 Christ, I've never seen that before and I've had tyre training in the Army. I've had plenty of waggons that have had a seized brake, to the point of smoking and getting so hot that it sounds like someone rattling a can of ball bearings!!!:shocked: I saw a TV program once about these strange spontaneous fires that burnt peoples houses down. It turned out that the fires were started by OILY COVERALLS. I think they were washed and then put in a dryer. If left bundled up a reaction would happen and hours later they would just catch fire!!!! Quote Link to comment Share on other sites More sharing options...
utt61 Posted March 3, 2010 Share Posted March 3, 2010 I saw a TV program once about these strange spontaneous fires that burnt peoples houses down. It turned out that the fires were started by OILY COVERALLS. I think they were washed and then put in a dryer. If left bundled up a reaction would happen and hours later they would just catch fire!!!! Years ago I did this (intentionally as an experiment) with a rag moistened in natural turpentine. Drop in in a metal bucket, a handful of other dry rags on top, and within an hour it was blazing. So if you keep a rag bin in your workshop, make sure that the used rags don't get dropped back in it. If you throw out your oily rags, do it in a bin outside. We are surrounded by hazards we don't even know about! Quote Link to comment Share on other sites More sharing options...
Tony B Posted March 3, 2010 Share Posted March 3, 2010 Linseed oil is another one liable to spaontaneous combust. hariest job in security a building undergoing restoration on a Friday night when the decorators are thinking about the pub! Quote Link to comment Share on other sites More sharing options...
abn deuce Posted March 4, 2010 Author Share Posted March 4, 2010 In respond to my posting this link on the Dodge .com site Robbo posted this link to another youtube video also on tire and rim safety . although it is dealing with modern artic truck wheel system's it does show at the end of the clip the effects of the same welding on mounted tire wheel assembles complete with manikins Something went wrong... Quote Link to comment Share on other sites More sharing options...
79x100 Posted April 2, 2010 Share Posted April 2, 2010 A really sad accident on the news today. Perhaps best to remove the valve core from a damaged wheel ? http://news.bbc.co.uk/2/hi/uk_news/scotland/edinburgh_and_east/8600833.stm Quote Link to comment Share on other sites More sharing options...
cpltomo Posted April 3, 2010 Share Posted April 3, 2010 Heard that news today. Sad as it is. If ever i had a tyre with a lump in the side wall i always let the air out as they are prone to going bang at some point. Thing is not every body is awere of the danger of tyres. Quote Link to comment Share on other sites More sharing options...
fesm_ndt Posted April 3, 2010 Share Posted April 3, 2010 That's saved me some wasted time - I was just thinking of looking at the possibility of patenting a truck or other tyre valve insert which would relieve excessive pressure, but a fusible plug is a much better solution. Wonder why they don't fit them as standard on truck rims? Cost would be minimal. Might have saved the life of one tipper driver in East Anglia last year who had brake trouble - when he got out to look at the tyre it exploded and blew him into the dual carriageway. Oh well, no point in re-inventing the wheel. Pun intended :whistle: The fusible plugs are very dangerous in themselves as the idea in a hot landing the plugs melt and the centres shoot out very fast so the tyre deflates instead of explodes. In the old days when you had stair ways getting on planes if the landing was a bit hard they would only let you exit from the front, incase one let off and hit someone. Quote Link to comment Share on other sites More sharing options...
abn deuce Posted April 4, 2010 Author Share Posted April 4, 2010 Thought this the best place to post this , Modern testing of run flat systems used in military wheels pretty amazing how much abuse they can take . Something went wrong... Quote Link to comment Share on other sites More sharing options...
fesm_ndt Posted April 4, 2010 Share Posted April 4, 2010 Thought this the best place to post this , Modern testing of run flat systems used in military wheels pretty amazing how much abuse they can take . ahhh ya killing me, another different type of Pinz rim........... where, what Quote Link to comment Share on other sites More sharing options...
LarryH57 Posted May 13, 2010 Share Posted May 13, 2010 You know I visit the forum often but missed this post - perhaps it should be a 'Sticky' for all to see as the show season gets underway. Quote Link to comment Share on other sites More sharing options...
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