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Wow, I am honestly impressed by the amount of fuckery contained in all those attempted towing videos. Lets tie ropes to the first place we come too! Oh, and I know, lets try to get as far away as possible from the important bits just because we can! Also just read most of this thread, and the thing that pisses me off most about H2/3 is that their owner's cant be bothered to remove the stock D-ring so it just sits there flapping about.
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Dec 13, 2009 14:49
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I work for a facility that repair aircraft turbine engine components. We recently received in a part for overhaul that is damaged a little more than usual. This is a turbine exhaust case from a Pratt & Whitney JT8D-200 turbine engine. An important requirement of these engine cases is to contain the pieces of the engine in case of failure. 
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Dec 13, 2009 17:16
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BatDan posted:An important requirement of these engine cases is to contain the pieces of the engine in case of failure. Because some person must be found at fault. Mechanical failure is never the issue. Say J.D. Smith worked on some bearings 300 hours ago. Those bearings shot out and ruined the whole engine. Therefore, it was J.D. Smith's fault. I'm just bitter. I had 4 years of flawless maintenance on aircraft, which is just as much luck as skill. I saw plenty of good people hosed by the system in that time though. So who ruined that turbine?
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Dec 13, 2009 18:01
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Magnum1371 posted:
Wow, that's a lot funnier than the last 5 times someone did that.
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Dec 13, 2009 19:35
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Skyssx posted:Because some person must be found at fault. Mechanical failure is never the issue. Say J.D. Smith worked on some bearings 300 hours ago. Those bearings shot out and ruined the whole engine. Therefore, it was J.D. Smith's fault.
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Dec 13, 2009 20:18
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BatDan posted:I work for a facility that repair aircraft turbine engine components. We recently received in a part for overhaul that is damaged a little more than usual. This is a turbine exhaust case from a Pratt & Whitney JT8D-200 turbine engine. An important requirement of these engine cases is to contain the pieces of the engine in case of failure. In the Air Force I saw a J57-59W that had a No. 1 bearing failure. You could look in the inlet and see light coming in the tailpipe. The N1 compressor was laying in the front compressor case.
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Dec 13, 2009 20:27
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Nothing too bad compared to some, but here are a few from my truck: Toyota 22R  Click here for the full 618x508 image. This timing chain crank sprocket had less than 2k miles on it and it just GRENADED  Click here for the full 735x676 image. Yeah that little guy shouldn't have a gap... Thanks, "top of the line" crank sprocket from above..  Broken lunchbox locker chunks   
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Dec 13, 2009 20:50
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InitialDave posted:Hmm, for our nonconformance reports, human error is never an acceptable root cause. You can have lack of training, lack of instruction, insufficiently robust system of working, whatever, but never "Inbred Jed just hosed up, sorry". AAI and Northrop Grumman will blame a service member 100% of the time. "There's no oil in this plane! The crew chief is at fault!" Yeah, because the plane crashed upside down, cracked the oil tank and then laid in a field that way for two hours. Of course there's no oil left in the tank! rear end. And they were UAVs, too. So there was no loss of life and max payout was under 1 million. Every loving time, "oh it was the soldier". Speaking of Gross Mechanical Failures and Pictures in This Thread:  Click here for the full 2048x1365 image. This one was the "mechanical failure" of the carbon fiber wings to contain 44 liters of 100LL upon impact with a concrete barrier at 70 KIAS. 90% Pilot, 10% Crew Chief error. The pilot left the aircraft in "sticks" mode, used during pre-flight, and pegged the throttle instead of hitting the "Auto Launch" button. The CC was 10% at fault, because going max throttle in sticks and hitting auto launch make slightly different noises. Anyway, it went off the launcher rail at 70 KIAS. Max throttle, zero flaps, zero ailerons, zero rudder, full pitch down. The pilot realized his mistake and tried to get it into auto launch, but the plane just followed a perfect arc and impacted a 30' chainlink fence and concrete barrier wall 600m downrange.
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Dec 13, 2009 21:06
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Skyssx posted:So who ruined that turbine? We are not an engine shop, we just get in engine components to repair. We get the frustrating job of weld repairing and heat treating crack prone engine cases. If I recall correctly this particular case is from Delta Airlines.
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Dec 14, 2009 00:37
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Tomarse posted:Where are brake discs used on ships? Well, this should float you boat nicely then. 
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Dec 14, 2009 03:06
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Gorilla Salad posted:Whenever I see pictures like that, I imagine tiny people working on a normal size engine, all covered in oil and swearing at each other in high squeaky voices.
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Dec 14, 2009 03:36
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Sexual Lorax posted:Whenever I see pictures like that, I imagine tiny people working on a normal size engine, all covered in oil and swearing at each other in high squeaky voices. Moties.
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Dec 14, 2009 04:08
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Input shaft gear failure that also wrecked the countershaft on a ZF 5-speed mated to a Ford 460:  How? I don't know. I bought the truck knowing the trans was bad, although I'm sure the PO's running it dry (!) didn't help.
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Dec 14, 2009 04:23
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Tomarse posted:Where are brake discs used on ships? They are used to slow the shaft so you can go from forward to reverse. Some ships, generally very small ones, have transmissions like your normal boat. Anything bigger than that is going to use a direct reversing engine, which changes the cam timing and runs in reverse. Steamships have a reverse turbine, which is a smaller turbine that can be engaged through a clutch, I haven't got a loving clue what they do with gas turbine driven stuff. The problem with both of those is that the propeller and the main engine/turbine are basically directly linked, there is no neutral, you don't get reverse until you bring everything to a halt so you can get it moving in the other direction. Shaft brakes are the solution to this, though it still takes loving forever if things are tense. There are other ways things are done, Z drives, variable pitch propellers, but these are expensive to scale up and usually reserved for smaller ships that are specifically designed for small ports and confined spaces. Ninja edit: I'll try and bug my Dad for some pictures. Nothing I worked on ever hosed up bad enough to bother taking pictures of, he had some good ones. Steam turbine blade through a 10" I beam comes to mind, along with an economizer fire.
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Dec 14, 2009 20:59
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Is someone going to start an 'oversized mechanical porn' thread or do I have to go snapping pics at work tomorrow & do it myself?
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Dec 14, 2009 21:09
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Cakefool posted:Is someone going to start an 'oversized mechanical porn' thread or do I have to go snapping pics at work tomorrow & do it myself? Yes. I'll even sticky it for 2 days out of the kindness of my wallet.
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Dec 14, 2009 21:18
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drzrma posted:I haven't got a loving clue what they do with gas turbine driven stuff. drzrma posted:There are other ways things are done, Z drives, variable pitch propellers, but these are expensive to scale up and usually reserved for smaller ships that are specifically designed for small ports and confined spaces. All run hydraulically. The whole system is pretty amazing, lots of hydraulic fuckery with stationary AND rotational bits.
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Dec 14, 2009 21:33
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Used Sunlight sales posted:you answer your own question good sir. This makes perfect sense when I take a moment and think small ships + unlimited budget. I really wish gas turbines weren't so godawful expensive, because they are  . Not really thread appropriate, other than the amazing pictures they generate when they gently caress up.
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Dec 14, 2009 22:11
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joat mon posted:Input shaft gear failure that also wrecked the countershaft on a ZF 5-speed mated to a Ford 460: Really? You have no idea how a transmission that dies behind the torque of a stock 302 died behind a 460? Those input shafts are notorious. Bob Cosby went through a couple dozen during his run for the championship in NMRA Factory Stock with his '99 Cobra making all of 350hp.
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Dec 14, 2009 22:13
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Cakefool posted:Is someone going to start an 'oversized mechanical porn' thread or do I have to go snapping pics at work tomorrow & do it myself? Oil cooler pumps.  Turbines. 
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Dec 14, 2009 23:25
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Wind Turbine Destruction https://www.youtube.com/watch?v=7nSB1SdVHqQ
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Dec 14, 2009 23:46
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In the vein of large machinery porn I saw this on Jalop http://www.heavy-equipment-calendar.com/order-calendar
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Dec 14, 2009 23:59
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ijustam posted:http://forums.bimmerforums.com/forum/showthread.php?t=1281659 How does something like this affect the longevity of an engine? I'm sure it would fail sooner, but do you think he would get less than half the life of a well maintained engine?
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Dec 15, 2009 00:20
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-Spiffy- posted:In the vein of large machinery porn I saw this on Jalop I like how they HDR every picture to poo poo to make real equipment look very video-gamey. 
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Dec 15, 2009 00:22
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Purple Haze PS3 posted:How does something like this affect the longevity of an engine? I'm sure it would fail sooner, but do you think he would get less than half the life of a well maintained engine?
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Dec 15, 2009 00:27
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joat mon posted:Input shaft gear failure that also wrecked the countershaft on a ZF 5-speed mated to a Ford 460 frozenphil posted:Really? You have no idea how a transmission that dies behind the torque of a stock 302 died behind a 460? Those input shafts are notorious. Bob Cosby went through a couple dozen during his run for the championship in NMRA Factory Stock with his '99 Cobra making all of 350hp. Bob Cosby thinks he broke 5 using a T45 in 2001: quote:Who's broke their stock input shaft launching on slicks? Who hasn't Also, I don't think the ZFs were stock for Mustangs, and the NMRA Factory Stock class rules in general seem to be pretty strict that only stock parts are allowed. As for specifics, quote:2.12a) PERMITTED MANUAL TRANSMISSIONS: And (although I don't know squat about drag racing) wouldn't a 5.72 first gear be too low? On the other hand, there's a Ford Wrecker in my area that makes exactly the same sound as my transmission made. As to how the input shaft failed, I was wondering about the immediate cause - a dumped clutch, a hard pull with too heavy a load, etc. or was it just too many miles with too much torque and too little lubrication? As to how generally, the first owner had installed a Banks Powerpack that Banks says adds 95 ft-lbs, so the truck was capable of sending 485 ft-lbs through a transmission rated for 420. (He removed the powerpack before he sold the truck to owner #2)
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Dec 15, 2009 05:09
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drzrma posted:The problem with both of those is that the propeller and the main engine/turbine are basically directly linked, there is no neutral, you don't get reverse until you bring everything to a halt so you can get it moving in the other direction. Shaft brakes are the solution to this This is where you slam it into reverse right away and then the shaft is broken amiright? 
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Dec 15, 2009 05:47
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Splizwarf posted:This is where you slam it into reverse right away and then the shaft is broken amiright?
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Dec 15, 2009 10:04
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What?
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Dec 15, 2009 11:21
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The Something Awful Forums > Discussion > Automotive Insanity: Breaks have braked, to broak to fix >
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Dec 15, 2009 13:43
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Ola posted:The Something Awful Forums > Discussion > Automotive Insanity: Breaks have braked, to broak to fix > I refuse on grounds of it being damaging to my psyche to read that sentence every time I come here.
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Dec 15, 2009 15:41
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This is what happens when your rear engine mount is bad, and the engine puts strain on your drive axles... Your transmission blows up! This came off of my '94 Mazda MX6.  Click here for the full 600x800 image.
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Jan 11, 2010 22:09
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Not so much as a mechanical failure, but a failure of proper procedure and possible failure of safety components leading to a fire, and susquent drilling rig collapse near Ames, Kansas. I haven't heard exact word on what caused this, but the derrickman, the one at the top of the derrick maneuvering stands of drill pipe, died in the blast.     quote:Oil rig collapse kills 1
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Jan 12, 2010 04:33
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Crank goes kaboom!  
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Jan 31, 2010 06:21
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2ndclasscitizen posted:Crank goes kaboom! When I have kids, if they say they hosed up my car and showed me this I would make a trophy mantle for it.
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Jan 31, 2010 06:37
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What kind of engine is it that the piston rods have ball bearings in them?
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Jan 31, 2010 07:16
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GSX1100. Happened flat at as well (probably pushing 250km/h).
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Jan 31, 2010 07:20
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2ndclasscitizen posted:GSX1100. Happened flat at as well (probably pushing 250km/h). Jesus. I imagine the rider's nomex underwear came back browner than before, too.
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Jan 31, 2010 07:25
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IOwnCalculus posted:Jesus. I imagine the rider's nomex underwear came back browner than before, too. I imagine so. If bike racers wore nomex underwear.
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Jan 31, 2010 07:53
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2ndclasscitizen posted:I imagine so. If bike racers wore nomex underwear. If I had nearly 200 angry HP between my thighs I certainly would.
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Jan 31, 2010 08:06
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