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Fucknag posted:Wasn't the V12, not impressed. "Wait a second, I thought every Countach was...ohhhh. Hmm." Shame about the run though, maybe the guy made a bargain with Satan for a drag car. redgubbinz fucked around with this message at 02:45 on May 13, 2013 |
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May 13, 2013 02:37
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Don't go WOT in top gear going 1500 rpm. https://www.youtube.com/watch?v=9T-UVe8mNtc
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May 13, 2013 20:19
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Seat Safety Switch posted:Don't go WOT in top gear going 1500 rpm. Am I crazy, or is this kind of unacceptable? "No sudden accelerations"? Give me a break. I can understand that it's not a good idea to floor it in 5th/6th at near-idle, but should the engine really be this easy to detonate?
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May 13, 2013 21:58
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Yeah that's not why it broke. I've seen this a few times recently and it seems to be due to the finishing and/or material used in the cranks. In the last couple of years Subaru has tried nitriding the cranks and doesn't anymore and now they are all heat-treated. Similar thing going on with the block castings. The new "704" castings seem to be much more prone to cracking a sleeve. Pistons too for that matter. Jeez, Subaru needs to get their poo poo together.
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May 13, 2013 22:05
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I was going to say, that looks like an engineering fault if anything. Before I even consider anything else, that crank, especially where it broke doesn't look very meaty. I'm sure testing and FEA was done, but under no circumstances should a crank break within the operational envelope of an engine.
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May 13, 2013 22:27
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rcman50166 posted:I was going to say, that looks like an engineering fault if anything. Before I even consider anything else, that crank, especially where it broke doesn't look very meaty. I'm sure testing and FEA was done, but under no circumstances should a crank break within the operational envelope of an engine. Yeah I was thinking the same thing. Here's a 944 crank for comparison:  Granted that's a straight four vs. a flat four so the crank has to be thinned down, but holy drat that Subaru crank looks fragile.
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May 13, 2013 23:16
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For reference, here's an older EJ257 (STI) crank with stock counterweights intact. Crank failures are rare, this one was interesting. I'm guessing that the design is both for a packaging and potentially oiling concern (as Subarus like to grenade rod bearings). It always surprises me how big the main bearing journals are. Speaking purely out of my rear end, I think the reason why the webs can be so narrow is because the Subaru flat four is really well balanced compared to conventional inline fours like the Porsche crank. Seat Safety Switch fucked around with this message at 23:23 on May 13, 2013 |
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May 13, 2013 23:20
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Speaking of Subarus... https://www.youtube.com/watch?v=oLP-HCcX9as *BWRHHAAAAAAAAaaa* 
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May 13, 2013 23:30
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Seat Safety Switch posted:Speaking purely out of my rear end, I think the reason why the webs can be so narrow is because the Subaru flat four is really well balanced compared to conventional inline fours like the Porsche crank. Except these are failing because of shearing not because of the maximum effect of the natural frequencies of the system. It isnt possible o tell without looking close and under a microscope but I think its as simple as overloading a relatively small cross sectional area of steel. John @ costa mesa speculates a lot but I think he is right this time. Dave Inc. posted:Yeah I was thinking the same thing. Here's a 944 crank for comparison: Keep in mind there's probably two decades of engineering difference in the two cranks. Newer Porsche 997 Flat 6 cranks look much more like the Subaru, though its still not nearly as thin of counterweights. jamal posted:Yeah that's not why it broke. I've seen this a few times recently and it seems to be due to the finishing and/or material used in the cranks. In the last couple of years Subaru has tried nitriding the cranks and doesn't anymore and now they are all heat-treated. Similar thing going on with the block castings. The new "704" castings seem to be much more prone to cracking a sleeve. Pistons too for that matter. Jeez, Subaru needs to get their poo poo together. Nitrided cranks are still heat treated, they just use low alloy steels that are closer to case hardening and then add nitriding instead of a through hardening steel like 4140.
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May 14, 2013 01:03
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Lord Gaga posted:Except these are failing because of shearing not because of the maximum effect of the natural frequencies of the system. It isnt possible o tell without looking close and under a microscope but I think its as simple as overloading a relatively small cross sectional area of steel. John @ costa mesa speculates a lot but I think he is right this time. Here's an example of an older Subaru turbo crank, an early 90s EJ22T, but I can't find one that would be about the same age as a 944, especially since the EJ started in '89 and the 944 was almost done by then. The webbing is still quite small with teeny counterweights, which doesn't surprise me since Subaru is pretty conservative and probably copied the EJ design the entire way down the line once they hit something functional. I don't know much about the EA turbos but maybe chrisgt has some pictures. 
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May 14, 2013 03:32
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I hope this is visible (facebook video), cant find it on youtube yet. Mk2 escort has a crazy crash in a rally here in ireland https://www.facebook.com/photo.php?v=583719431667911 edit: found it on youtube http://www.youtube.com/watch?v=QIP__btVRic https://www.youtube.com/watch?v=QIP__btVRic echomadman fucked around with this message at 21:04 on May 14, 2013 |
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May 14, 2013 20:59
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That is lucky in the extreme. I'm amazed the car didn't flip. Here's another amazing save, in a GT2: https://www.youtube.com/watch?v=6pqcXxfpw2I Have you ever wondered what the inside of a carburetor looks like while the car it's in is driven hard? Wonder no more! https://www.youtube.com/watch?v=jKuSSmAum6c KozmoNaut fucked around with this message at 22:19 on May 14, 2013 |
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May 14, 2013 22:15
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This movie looks like it's going to be amazing Between that and Rush, my head might explode. Not just what looks like properly done racing movies, but properly done racing movies about the coolest eras in racing. 
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May 15, 2013 00:04
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VikingSkull posted:This movie looks like it's going to be amazing HOLY loving poo poo. Cant remember the last time i was this excited to actually pay 20 bucks to watch a movie.
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May 15, 2013 00:08
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The Snake also has a pretty bitchin' car collection He even brought his 'Cuda and hauler to Leno's Seizure Meat fucked around with this message at 00:41 on May 15, 2013 |
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May 15, 2013 00:38
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Sébastien Loeb has been test driving the 206 T16 Pikes Peak. That thing is fast. The tiniest glimpse of what could have been if group b had been kept alive. https://www.youtube.com/watch?v=u7Dv3lqxH6I
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May 16, 2013 09:52
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The 405 at the end still sounds better.
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May 16, 2013 18:31
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This just in, Russians are loving insane and their roads are horrible. In fact in a few sections of these videos it appears that staying off/out of the road/mudbog/river would be easier. https://www.youtube.com/watch?v=afJ18eJeNgU https://www.youtube.com/watch?v=8VOULfira3o
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May 17, 2013 18:49
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https://www.youtube.com/watch?v=IXlpLXHNTZQ
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May 20, 2013 17:19
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What're the window grates for, I wonder?
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May 20, 2013 19:22
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The highly modified Rebellion R2K, which underneath the Koenigsegg exterior is just a regular old Ultima GTR.
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May 21, 2013 02:07
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https://www.youtube.com/watch?v=qyJsjko1GGY This guys engine says "gently caress you! I don't want to drift anymore"
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May 21, 2013 19:09
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https://www.youtube.com/watch?v=8M1o2rpO_JY Awesome rear end grandpa stops a runaway Detroit. Rectal Placenta fucked around with this message at 03:15 on May 22, 2013 |
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May 22, 2013 03:13
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poo poo  That engine needs a rebuild now... see the sparks flying out the exhaust right before he choked it partially? I don't even want to know what those sparks were produced by, seeing as I am reasonably certain that's not a turbocharged DD. If I had to guess, it's rings, which would also explain why it runs away, it's getting plenty of fuel off the walls of the cylinders on every stroke.
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May 22, 2013 03:24
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real_scud posted:https://www.youtube.com/watch?v=qyJsjko1GGY Holy cow that was a quick response by the officials.
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May 22, 2013 03:40
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real_scud posted:https://www.youtube.com/watch?v=qyJsjko1GGY The literal pile of metal that drops below the engine when he stops is the best part of this video.
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May 22, 2013 03:50
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Looks like the turbo exploded and severed a fuel line. That's a pantshitter if I've ever seen one.
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May 22, 2013 04:29
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Speaking of quick responses to fires http://www.youtube.com/watch?v=TpCFtm6jwFk&t=7m25s ROFLBOT fucked around with this message at 12:13 on May 22, 2013 |
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May 22, 2013 12:11
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911 GT3R driver's eye view lap from this year's Nurburgring 24h, shot just before the thing got red-flagged for hours because of the extreme rain. https://www.youtube.com/watch?v=WAvN0EzEacU It looks like that famous RUF CTR video, but at night and whilst trying to race/lap dozens of other cars.  *E* Holy balls the other Porsche at 6:45. 
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May 22, 2013 20:02
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jammyozzy posted:911 GT3R driver's eye view lap from this year's Nurburgring 24h, shot just before the thing got red-flagged for hours because of the extreme rain. Oh wow that's terrifying. I have no idea how he could see anything when he was on the straight at 250kmh with the glare from the headlights on the rain. I also didn't realise the carousel was that bumpy.
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May 22, 2013 21:14
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Vitamins posted:I also didn't realise the carousel was that bumpy. There is a video of Sabine driving some folks around in the ring-taxi. Upon exiting the carousel she comments "You need a good bra here." https://www.youtube.com/watch?v=HSqzRGpD4qA
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May 22, 2013 23:51
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Chris Harris on Cars... https://www.youtube.com/watch?v=10L-WFsVaw0 "Who am I to complain about the design of a gear knob? Look at my beard." He's becoming land Riker.
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May 23, 2013 10:36
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2 points... Would have been better if he stuck the landing. https://www.youtube.com/watch?v=Vph5vkCwT40&t=47s Edit: This video also reminds me why I don't read youtube comments. Aurune fucked around with this message at 22:33 on May 23, 2013 |
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May 23, 2013 22:24
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Rectal Placenta posted:https://www.youtube.com/watch?v=8M1o2rpO_JY I hate that the guy who originally was suppose to cover the intake tries for 1 second, and then runs away. At the end he said "It got sucked in!!" when you can see him drop whatever he had to the ground.
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May 24, 2013 00:22
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kastein posted:poo poo With Detroits, it's always the injector rack being stuck/setup wrong or the governor holding it. The blowers like to leak oil too, and all the other standard diesel kinds of runaway can happen, but it's almost always the fuel rack. I've never understood why anybody in their right mind would remove the airflaps that most (all?) 2 stroke Detroits had that let you kill any runaway without drama. Hell, if you nearly stall one they can start running backwards, then you're hosed just as much. The flaps were pretty important. Hypnolobster fucked around with this message at 00:40 on May 24, 2013 |
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May 24, 2013 00:38
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Yeah, you can bump start the LD/LDS/LDT-465 (white/continental I6 multifuel used in old US military trucks) going backwards by accident too. It's a real trip until you realize all the gears go backwards except the reverse, then you see smoke coming out the intake stack and realize the oil pump is pushing your lube back into the oil pan and it's time to shut it off ASAP.
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May 24, 2013 00:45
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ROFLBOT posted:Speaking of quick responses to fires Flaming, upside down race cars are the stuff of nightmares
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May 24, 2013 02:22
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I want to find the poo poo head with the camera who's right in the way not helping at all, and punch him in the face with his own foot... If you're not helping, get the gently caress away.
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May 24, 2013 09:20
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Hypnolobster posted:With Detroits, it's always the injector rack being stuck/setup wrong or the governor holding it. The blowers like to leak oil too, and all the other standard diesel kinds of runaway can happen, but it's almost always the fuel rack. I was just coming here to post this.. https://www.youtube.com/watch?v=3NRaqgab0_w
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May 24, 2013 14:18
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Renault Twin'Run concept, a silhouet racer with a tubular spaceframe and the V6 from a Nissan 350Z in the back. Basically a Twingo with a 320 hp V6 in the boot, or something about the size of DJ Commie's Charade with 320 hp. https://www.youtube.com/watch?v=XhCKAGp_SUs Dutch Autoweek, but most of the video is in sort-of english, it has much more technical information than the above video though. http://www.autoweek.nl/videoHD/3434/reportage-renault-twinrun
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May 24, 2013 18:06
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