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xzzy posted:They also used the engine-powering-an-engine concept on the F-1 engine used to lift the Apollo rockets. The Bloodhound 1000mph car uses an f1 v8 to power the fuel pump for its rocket engine. The design has balance issues with the duel massive steel spheres up front.
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Oct 2, 2014 20:18
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xzzy posted:They also used the engine-powering-an-engine concept on the F-1 engine used to lift the Apollo rockets. Edit: Beaten like the Belgrano.
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Oct 2, 2014 20:23
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Edward IV posted:I'm pretty sure he meant no parasitic loss from the supercharger. Yup that's what I meant. You can tell how good it worked by how many Top Fuel teams use it today  Fattig posted:Edit; is that even an Hemi? I dont know jack poo poo about old American boat anchors. Yup, it's a Hemi. You can see the Chrysler FirePower badge on the valve cover, meaning it is anywhere from a 331 to a 392 cubic inch engine (most likely the 392). None of the Chrysler cars were referred to as "Hemi" until the 426, at least officially. Chrysler and Imperial had the "FirePower" engine, from 331 to 392, DeSoto had the "FireDome" ranging from 276 to 345 (fun fact the modern 5.7L Hemi as released was 345ci and 345hp, just like the DeSoto's), and Dodge had the "Red Ram" line ranging from 241 to 325 cubes. Most early drag cars with a Hemi will be using 331, 354 or 392 cubic inch engines from the Chrysler line, while later racers used Plymouth and Dodge sourced 426's. Plymouth did not have a Hemi until the 426. e- Another fun fact, it takes around 600hp to turn the Roots blowers on a modern Top Fuel car. When you make ~10,000hp, that's a cost you can pay. Seizure Meat fucked around with this message at 22:49 on Oct 2, 2014 |
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Oct 2, 2014 22:26
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The only reason they use roots-type superchargers is because turbochargers were outlawed decades ago.
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Oct 2, 2014 22:55
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wallaka posted:The only reason they use roots-type superchargers is because turbochargers were outlawed decades ago. Not for the reasons everyone is thinking, though, it was due to spectacular failures with high speed rotating parts, uh, escaping. Yeah, we'll go with escaping. Nowadays turbo tech could probably compete with them and go even faster, unfortunately the NHRA thinks that Top Fuel and Funny Car is quite fast enough, thank you....so they stay banned.  e- also the guy who can build and tune a 426 with twin turbos, no computerized engine controller and mechanical fuel injection is a wizard, pure and simple...possibly a warlock
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Oct 2, 2014 23:06
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VikingSkull posted:the NHRA thinks that Top Fuel and Funny Car is quite fast enough, thank you.
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Oct 2, 2014 23:12
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Ya got me! A rash of deaths caused them to shorten the course from 1320' to 1000', and the cars are faster than ever. Modern turbo tech would probably have them crossing the traps in the mid-3's @ 350ish mph if it's true that turbos would suit the application better than Roots superchargers, but I'm doubtful they would, anyway. The amount of air a modern Top Fuel 14-71 Jimmy can cram is astounding. e-  the crash that changed everything
Seizure Meat fucked around with this message at 23:17 on Oct 2, 2014 |
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Oct 2, 2014 23:15
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VikingSkull posted:Ya got me! A rash of deaths caused them to shorten the course from 1320' to 1000', and the cars are faster than ever. Modern turbo tech would probably have them crossing the traps in the mid-3's @ 350ish mph if it's true that turbos would suit the application better than Roots superchargers, but I'm doubtful they would, anyway. The amount of air a modern Top Fuel 14-71 Jimmy can cram is astounding. That's loving insane. Completely insane. I want to see it.
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Oct 2, 2014 23:17
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It's never gonna happen, it's been "Hemi based/Roots charged" for so long I doubt anyone would make the swap even if they were allowed. e- it would change literally everything, from clutch setup to tire composition, fuel systems and ignition setups, everything would be different. I dunno if I wanna be in a 10,000hp car that doesn't make power until the boost hits....and there will be lag when they first try it.
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Oct 2, 2014 23:19
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InitialDave posted:So what's the point of the sport?
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Oct 3, 2014 01:15
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Anyone that hasnt seen one light off in person doesnt understand that it's not really them accellerating so much as changing th earth's rotation temporarily. Last time I was them I was a couple hundred feet away and when the green light lit everything went blurry from my eyes vibrating inside my skull
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Oct 3, 2014 03:05
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The drat things generate like 800 pounds of thrust from the exhaust headers. If that alone isn't worth watching, I don't know what is.
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Oct 3, 2014 03:09
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OFFICER 13 INCH posted:Anyone that hasnt seen one light off in person doesnt understand that it's not really them accellerating so much as changing th earth's rotation temporarily. Last time I was them I was a couple hundred feet away and when the green light lit everything went blurry from my eyes vibrating inside my skull One of my first trips to the Indianapolis Raceway, we were tailgating in a parking lot across the street, and they were still loud as gently caress and we could feel the Earth tremble when they ran. Just incredible. 
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Oct 3, 2014 04:59
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Could have sworn I saw this already today but I can't find it in the last few pages. Here's how much fuel a top fuel dragster consumes, per cylinder, at idle, then at WOT. https://www.youtube.com/watch?v=ga_b6QBPvE8 And a few history channel style facts about em: quote:Top Fuel Drag Racing Put Into Perspective: I saw a top fuel dragster block for sale at a swap meet a few years ago - it was destroyed. Split entirely in half down the middle and most of one cylinder was shattered with cracks all the way out through the outside of the block and into the valley. Guy wanted a couple hundred bucks for it and drat I wish I was made of money because that would make a hell of a coffee table. Oh, that flame front temperature they cite? That's 700 degrees hotter than an oxyacetylene cutting torch.
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Oct 3, 2014 05:31
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babyeatingpsychopath posted:That _is_ the fuel pump. It's a 55,000HP turbine that burns rocket fuel. Its exhaust runs around the rocket cone to cool the cone and protect it from the main rocket exhaust. Actually, it's the rocket fuel that is circulated around the rocket cone to cool it.  The F-1 engine is loving cool. Here are some photos of the one in Los Angeles.   
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Oct 3, 2014 07:06
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OFFICER 13 INCH posted:Anyone that hasnt seen one light off in person doesnt understand that it's not really them accellerating so much as changing th earth's rotation temporarily. Last time I was them I was a couple hundred feet away and when the green light lit everything went blurry from my eyes vibrating inside my skull I went to the Mid-South Nationals at Memphis a few years ago (2007ish?) and I've never experienced sound like that. I've been working at the end of the runway at Tyndall AFB and had an F-22 takeoff and go into a vertical climb at what felt like 6 inches above my head, and that was still nothing compared to top fuel and funny cars launching. It really does make everything go blurry from the sound waves vibrating your entire goddamn body. You don't hear them as much as you feel them take off. It felt like my heart had an arrhythmia or something. The other thing is the smell in the pits when they switch from warming up on methanol to the nitromethane. I will never forget that smell of the nitro burning my nose and wanting more of it. It was the smell of power and speed.
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Oct 3, 2014 07:33
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bandman posted:I went to the Mid-South Nationals at Memphis a few years ago (2007ish?) and I've never experienced sound like that. I've been working at the end of the runway at Tyndall AFB and had an F-22 takeoff and go into a vertical climb at what felt like 6 inches above my head, and that was still nothing compared to top fuel and funny cars launching. It really does make everything go blurry from the sound waves vibrating your entire goddamn body. You don't hear them as much as you feel them take off. It felt like my heart had an arrhythmia or something. I love this video of a vintage dragster warming up. https://www.youtube.com/watch?v=UeX9mPoC8j0 The car is started and warmed up on alcohol and switched over to nitromethane at around the 2:10 mark where you can see the demonic possession take place.
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Oct 3, 2014 07:47
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kastein posted:https://www.youtube.com/watch?v=ga_b6QBPvE8 I'm pretty sure the factoid comparing a top fuel car to a 747 isn't even close to being accurate. Comparing pounds of thrust to horsepower is kind of an an apples and oranges comparison, but I ran across a paper from NASA that figured a 747 weighing 700,000lbs moving at 530mph would require about 60,000hp to do so (or 15,000hp/engine), which is on the lower end of the numbers I could find online. The most generous estimate I've seen for a top fuel dragster is about 10,000hp, so there's no way a top fuel car is producing more energy than even a single engine on a 747. All I can figure is that whoever came up with that statement was thinking of the fact that you can burn about 8 times more nitromethane than gasoline with a given quantity of air, but since nitromethane actually has less energy density than gasoline (which has slightly less energy density than jet fuel or diesel), even that comparison doesn't work out. azflyboy fucked around with this message at 09:59 on Oct 3, 2014 |
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Oct 3, 2014 08:17
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this is a great video showing a Top Fuel car scaring spectators the best is the kid at lower right who's terrified clutching his mom until he gets hearing protection on 
Seizure Meat fucked around with this message at 11:36 on Oct 3, 2014 |
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Oct 3, 2014 11:09
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The past two pages have been magical. In other news, the new Mustang 4-cylinder hits 12.5 in the quarter mile with basically an exhaust, tune and slicks. http://www.autoblog.com/2014/09/28/2015-ford-mustang-ecoboost-drag-strip-12-seconds-video/
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Oct 3, 2014 12:58
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And those explosions near the end that shake the camera from 30 feet away are just them blipping the throttle.
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Oct 3, 2014 13:30
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Rev. Dr. Moses P. Lester posted:They do go from 0 to faster than a Veyron in like 4 seconds, so to be fair it already is pretty fast.
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Oct 3, 2014 13:40
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I took this last Sunday at Lebanon Valley. Some 60s dragsters going at it. I think they did like high 7s low 8s at near 200mph. https://www.youtube.com/watch?v=85TamSpgqPw
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Oct 3, 2014 13:42
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ehnus posted:I love this video of a vintage dragster warming up. I will never ever get tired of this video.
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Oct 3, 2014 14:02
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VikingSkull posted:this is a great video showing a Top Fuel car scaring spectators This is fantastic. I went to the vintage bike swap meet at J&P Cycles last year, and they had a nitro drag bike there that they warmed up and revved for the crowd. Thing thing only had 2 cylinders, and the video I got from my canon 5D2 was completely useless because of the vibrations. It smelled wonderful though. Boaz MacPhereson posted:I will never ever get tired of this video. Old greybeard feeling the temp of the heads is my favorite part.
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Oct 3, 2014 15:04
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InitialDave posted:It's more that I just never thought of it as the kind of sport where a single person involved in it would understand the word "enough". http://en.wikipedia.org/wiki/Scott_Kalitta
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Oct 3, 2014 16:57
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ehnus posted:I love this video of a vintage dragster warming up. I gotta say, never really been into drag racing (never been to one) but your description of what happens at 2:10 is absolutely spot on and I'm loving it! Am now looking at when the next races are in Finland.
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Oct 3, 2014 19:07
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Fattig posted:
Its a "Firepower Hemi" an early one. So yes, its got a hemi. So does this: https://www.youtube.com/watch?v=shqg4a-Ols8
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Oct 3, 2014 19:49
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Cakefool posted:The Bloodhound 1000mph car uses an f1 v8 to power the fuel pump for its rocket engine. The design has balance issues with the duel massive steel spheres up front. No, actually it doesn't. They scrapped plans to use the Cosworth V8 months ago. Speculation is a Judd racing engine now but they still haven't officially announced what engine they're going to use as a fuel pump.
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Oct 3, 2014 19:54
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Fart Pipe posted:I took this last Sunday at Lebanon Valley. Some 60s dragsters going at it. I think they did like high 7s low 8s at near 200mph. Goddamn, if I had known that I would've gone!  also it never ceases to amaze me how many Hudson Valley goons there are
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Oct 3, 2014 20:55
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drgitlin posted:No, actually it doesn't. They scrapped plans to use the Cosworth V8 months ago. Speculation is a Judd racing engine now but they still haven't officially announced what engine they're going to use as a fuel pump. Oh okay, the stand they had at Goodwood still had the cossie V8 and that's what all the air cadets were instructed to tell people about. Still eager to see it run.
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Oct 3, 2014 20:58
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VikingSkull posted:the best is the kid at lower right who's terrified clutching his mom until he gets hearing protection on
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Oct 3, 2014 21:18
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Collateral Damage posted:I never understand people who go to events like these with no hearing protection. Tinnitus sucks. what?
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Oct 3, 2014 21:23
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VikingSkull posted:Goddamn, if I had known that I would've gone! There were only a few dragsters. It was mostly old fast street cars but it was super awesome. Being the nostalgia drags I was wondering why there were so many 5.0s and Third gen Camaros/Firebirds but then I remembered that they are 30 years old at this point and Im getting old. Im in CT, not the valley but it was only an hour drive or so. Ill PM you next time we go. Ozmiander lives in the area too and said the same thing about missing it, haha.
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Oct 3, 2014 21:31
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rscott posted:what? https://www.youtube.com/watch?v=Tekhh7Iy-sM
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Oct 3, 2014 21:48
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Collateral Damage posted:I never understand people who go to events like these with no hearing protection. Tinnitus sucks. this is a pro username/post combo I've been to the Matco Nationals twice at Englishtown and neither time I wore hearing protection. My first race was big block modifieds, unmuffled with 54 starters, at age 3 months in 1980. No hearing protection, thanks dad! I still blame my tinnitus on Motorhead Fart Pipe posted:There were only a few dragsters. It was mostly old fast street cars but it was super awesome. Being the nostalgia drags I was wondering why there were so many 5.0s and Third gen Camaros/Firebirds but then I remembered that they are 30 years old at this point and Im getting old. Cool, I'd be down if my schedule permits. I'm down in Orange County about 90 minutes south.
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Oct 3, 2014 23:01
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Cakefool posted:Oh okay, the stand they had at Goodwood still had the cossie V8 and that's what all the air cadets were instructed to tell people about. Still eager to see it run. There's a chap on Pistonheads who works on the team building the car who's been posting a build thread of sorts that is well worth following: http://www.pistonheads.com/gassing/topic.asp?h=0&f=23&t=1352985&mid=34101&nmt=Bloodhound+SSC+Thread+As+Requested%2E%2E%2E%2E%2E I might have posted this before but I chatted with the chief designer a few months ago about the car, he was a fascinating bloke. Could happily have listened to him for hours: http://arstechnica.com/gadgets/2014/03/bloodhound-ssc/
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Oct 4, 2014 01:59
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 Behold, the Top Fuel Hemi converted to diesel! https://www.youtube.com/watch?v=0DRfjH-dVQI
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Oct 4, 2014 04:16
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VikingSkull posted:I still blame my tinnitus on Motorhead Stone deaf forever 
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Oct 4, 2014 07:34
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yeah, those motherfuckers were loud
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Oct 4, 2014 07:49
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