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Phanatic posted:It sure can be, though. Tire debris flying up into the wing and rupturing the fuel tank is what killed the Concorde. And here's a rejected takeoff test of an A340 featuring some spectacularly poor communications between the test director, the aircrew, and the fire crew, in which they're lucky nobody got killed:  The balls on that firefighter must be titanically big. God loving drat, three explosions and he still went back in? Whoever was meant to be his liaison should be loving shot.
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Dec 3, 2014 01:23
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QuarkMartial posted:You never know who is lurking, bored, and wanting some "lulz". You really can't be too cautious. Sorry to bring up this derail again but at the same time, I post my project threads on multiple forums. A forum moderator who I don't always see eye to eye with from one of the Volvo forums basically googled the URL of my pictures and found my posts here in AI. He linked my own threads to me in a private message with no explanation - but either he thought I was pirating someone else's work or he just wanted me to know that he's following me around the internet. Dude's not even a goon and he took the time to find out more things about me, and I try to be fairly anonymous on the web. And he's read AI enough to think it was worth telling me he's read it. He could be reading this post right now. Good thing he never bans anyone no matter how big an rear end in a top hat they are (one of the things we don't see eye to eye about).
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Dec 3, 2014 01:30
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Phanatic posted:It sure can be, though. Tire debris flying up into the wing and rupturing the fuel tank is what killed the Concorde. And here's a rejected takeoff test of an A340 featuring some spectacularly poor communications between the test director, the aircrew, and the fire crew, in which they're lucky nobody got killed: The test director in this is a loving primadonna rear end in a top hat. And the fire crew was cowboy as gently caress, but probably saved some lives.
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Dec 3, 2014 04:18
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cyberbug posted:But why were they doing something similar on a real aircraft in the A340 test? Were they accidentally going faster than planned before braking or was their idea really to set the brakes on fire and blow the tires? If I recall correctly there are fuses in the tires that should have melted and gracefully dumped the air out of them. But yeah, the fire is normal, tire explosions were not.
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Dec 3, 2014 06:00
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FatCow posted:If I recall correctly there are fuses in the tires that should have melted and gracefully dumped the air out of them. But yeah, the fire is normal, tire explosions were not. I think those are the big puffs of black on the 777 test- relief valve blows and that is dust from the brakes.
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Dec 3, 2014 06:59
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LloydDobler posted:Sorry to bring up this derail again but at the same time, I post my project threads on multiple forums. A forum moderator who I don't always see eye to eye with from one of the Volvo forums basically googled the URL of my pictures and found my posts here in AI. He linked my own threads to me in a private message with no explanation - but either he thought I was pirating someone else's work or he just wanted me to know that he's following me around the internet. omg who is it
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Dec 3, 2014 08:56
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Warped brake rotor.  http://youtu.be/0KaGIV9gN-E
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Dec 3, 2014 09:26
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Dannywilson posted:The test director in this is a loving primadonna rear end in a top hat. And the fire crew was cowboy as gently caress, but probably saved some lives. I kept waiting for the pilot to say 'Fcuk this. We're out of here. Deploy the inflatable slide and Mr Director, I'm gonna punch you in the face when I see you'
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Dec 3, 2014 10:12
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I think part of the certification test is the aircraft must be able to stand for 5(?!) minutes after an MTOW RTO without firefighter assistance. Presumably the guys with the stairs were reluctant to bring them with the brakes on fire, and the fire crew were reluctant to compromise the test until they believed the airframe to be in jeopardy. Or it could just be a massive communication fuckup, certainly either way the guys riding the plane haven't a clue what's happening.
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Dec 3, 2014 10:38
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FatCow posted:If I recall correctly there are fuses in the tires that should have melted and gracefully dumped the air out of them. But yeah, the fire is normal, tire explosions were not. This makes sense, most compressed air reservoirs will have a fusible plug of some description.
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Dec 3, 2014 10:44
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In the case of that aircraft the tires actually held up... it was the rims that catastrophically failed if I've been reading correctly
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Dec 3, 2014 13:25
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QuiteEasilyDone posted:In the case of that aircraft the tires actually held up... it was the rims that catastrophically failed if I've been reading correctly Yes, that's correct. And also, yes, the reason the fire crews didn't move in immediately is because the test requirement is that the aircraft has to sit there, after coming to a full stop, for five minutes before they can intervene. If it can't do that safely, it's a failed test. The fuse plugs didn't fail, either. The Goodrich wheels failed before the fuse plugs in the Michelin tires were even supposed to activate. The tires performed to spec, it's the wheels that didn't. Looked like this: 
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Dec 3, 2014 16:10
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IIRC that test, besides requiring the plane to sit x amount of minutes without intervention, also requires the brakes to be artificially made to be worn to the very minimum requirements where they would normally be replaced at. It's basically a test for the worst case scenario rejected takeoff.
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Dec 3, 2014 16:17
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OFFICER 13 INCH posted:Warped brake rotor. Throw it on the lathe it will even out
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Dec 3, 2014 16:39
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OFFICER 13 INCH posted:Warped brake rotor. Interesting that thats a solid core disc. Heres a paper about brake disc vibrations that confirms they definitely do warp and goes into a good amount of detail: http://www.fkm.utm.my/~arahim/jacobsson.pdf
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Dec 3, 2014 18:16
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CarForumPoster posted:Interesting that thats a solid core disc. Ive had brand new rotors and drums come in that I had to cut before putting on a customers vehicle. Gotta love budget parts.
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Dec 3, 2014 18:35
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Megasquirt tuning failure:
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Dec 4, 2014 06:01
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More like Megasplash. Or Gigasquirt?
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Dec 4, 2014 10:26
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Anything Metallica fits here.
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Dec 4, 2014 10:34
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Vitamin J posted:Megasquirt tuning failure: What the hell happened?
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Dec 4, 2014 16:20
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CommieGIR posted:What the hell happened? My best guess: Turbo + high-RPM / high-load lean condition + preignition == thrown rod on the leanest cylinder, acting as a flail on the inside of the block. How'd I do?
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Dec 4, 2014 19:30
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sofullofhate posted:My best guess: Luckily it just took out the block so I can reuse my nice ported and polished head and none of the oversize valves were smashed up.  
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Dec 4, 2014 20:32
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the poi posted:omg who is it It's Volvo Chad. Never piss off Volvo Chad.
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Dec 4, 2014 23:09
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atomicthumbs posted:It's Volvo Chad. Never piss off Volvo Chad. What is it about Swedish cars that attract wierdos? 
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Dec 4, 2014 23:17
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Viggen posted:What is it about Swedish cars that attract wierdos?  
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Dec 5, 2014 02:51
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Vitamin J posted:A+. Was increasing the timing for the winter temps but went a bit too far. I find it interesting that the rod just neatly sheared in half instead of doing the usual thing of turning into a pretzel then eventually tearing apart.
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Dec 5, 2014 03:05
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My dads snowblower stopped working so he dimantled the housing that spins the augers on the front, he found this.
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Dec 5, 2014 03:43
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What the gently caress. 
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Dec 5, 2014 04:09
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Is that the flywheel side facing out of the car? How does it drive the transmission like that?
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Dec 5, 2014 04:30
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The OG900 (Saab old-gen 900) was like that. Clutch and poo poo at the FRONT, in a longitudinal engine, front wheel drive vehicle. Like a backwards Toronado setup. I don't even know what the gently caress but it looked like it would make clutch jobs easy and fast I guess, and I can't argue with the crankshaft pointing the right direction.
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Dec 5, 2014 04:32
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Bit of a bitch for belts, I'd imagine.
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Dec 5, 2014 04:39
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For extra  , it was based on a modified version of the not-very-good triumph I4 which in turn was based on the pretty-lovely triumph v8 cut in half.
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Dec 5, 2014 06:58
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kastein posted:The OG900 (Saab old-gen 900) was like that. Clutch and poo poo at the FRONT, in a longitudinal engine, front wheel drive vehicle. Like a backwards Toronado setup. In all saabness the pressure plate and chain assembly have to installed wiht the fingers depressed. Yes. thats right. depressed. The two units also shared common fluid. and alternators were a multi-swearhour job. Slavvy posted:For extra hahahahahaha holy poo poo.
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Dec 5, 2014 07:10
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Why do I suddenly want one?
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Dec 5, 2014 07:31
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Splizwarf posted:Bit of a bitch for belts, I'd imagine. And you have to remove the whole shebang to replace the transmission. Guess what the most delicate component of any particular Saab's powertrain is? Cakefool posted:
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Dec 5, 2014 07:36
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Yeah the Saab I had was like that. Belts did suck, against the firewall. The tranny was also longitudinal with a differential in it, and the halfshafts came out the sides. The top of the trans case was the oil pan, bolted to the bottom of the motor. It didn't share fluid though. Because of this configuration the assembly was incredibly tall, even with the engine tilted over at a 45° angle. Of course they didn't raise the hood, they just hung the drat tranny down inches off the ground. Once I lowered it I realized how bad it was. It fortunately had a skid plate which I did smack on the ground numerous times without even trying. Looking back I really enjoyed that car though. It was my first foray back into automotive insanity after my marriage-induced car hiatus. If I knew then what I know now I would have made a monster out of it. It was in really great condition. Edit: Have a partial cutaway of this mechanical failure: 
LloydDobler fucked around with this message at 08:10 on Dec 5, 2014 |
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Dec 5, 2014 07:47
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kastein posted:The OG900 (Saab old-gen 900) was like that. Clutch and poo poo at the FRONT, in a longitudinal engine, front wheel drive vehicle. Like a backwards Toronado setup. I had it explained to me as follows: "Some bloke from Sweden had front-wheel-drive explained to them by a very inebriated Japanese engineer, while he was also blotto, and neither of them spoke any of the other's language"
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Dec 5, 2014 14:00
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I often heard Saabs explained as being like what you would get if you described a car to a Martian over the phone; but I always thought that was just about the styling (and maybe ignition key placement). No idea it extended that far under the hood.
Data Graham fucked around with this message at 14:26 on Dec 5, 2014 |
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Dec 5, 2014 14:22
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It seems like a pretty good idea, since it maximizes interior room. The transmission below the engine pushes the polar moment of inertia forward, which would make for predictable if sluggish handling, sort of like a 911 in reverse. The rear suspension is pretty unique.  Why did they retain the dead axle? With that setup it seems like it would easier to just get rid of it and make it fully independent, maybe add a lateral link to each side. Throatwarbler fucked around with this message at 14:54 on Dec 5, 2014 |
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Dec 5, 2014 14:50
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All that effort to remove fore-aft movement, then they stick a panhard rod on it.
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Dec 5, 2014 15:19
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