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Beve Stuscemi posted:The fan needs to exit out of the top, showering onlookers with track crap This is the fastest thing in any parking lot: 
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Aug 8, 2023 07:07
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HawkHill posted:Cool but I don't understand why they think that it will be allowed on a track or into competition. Fan cars get banned from competition because, like ground effect cars, their downforce relies on maintaining an extremely narrow gap between the bottom of the car and the track surface. One downside of this is that they have to have very stiff suspension that shakes the driver's bones apart. But the really dangerous thing is that if that underbody aerodynamic system gets disrupted, all the downforce suddenly disappears. It would suck (ha ha) to be going around a turn with two tons of downforce, hit a pebble that kicks the corner of your car up a bit, and suddenly lose 80% of it.
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Aug 8, 2023 08:10
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Beve Stuscemi posted:The fan needs to exit out of the top, showering onlookers with track crap Aka Rally spectacting
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Aug 8, 2023 09:03
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HawkHill posted:Cool but I don't understand why they think that it will be allowed on a track or into competition. It's a tech demo prototype. It's not for competition. They released the customer version at Goodwood, and it's an £820,000 track toy for billionaires. When those guys want track time, they have no problem getting it.
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Aug 8, 2023 11:41
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BuckyDoneGun posted:It's a tech demo prototype. It's not for competition. They released the customer version at Goodwood, and it's an £820,000 track toy for billionaires. When those guys want track time, they have no problem getting it. And with any luck, that traction will be problematic and we lose a few more billionares
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Aug 8, 2023 12:38
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Googling for tracks that have a hairpin turn on an ocean cliff
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Aug 8, 2023 12:47
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Beve Stuscemi posted:Googling for tracks that have a hairpin turn on an ocean cliff If the owner of Segway can find a way.... EDIT: NOT Me, I promise. https://i.imgur.com/ArB4svt.mp4 Humphreys fucked around with this message at 14:22 on Aug 8, 2023 |
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Aug 8, 2023 13:46
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Hadlock posted:Locomotive on the dynamometer, year unknown That's the British Railways Rugby Testing Station (that's a Testing Station at Rugby, not a Testing Station for the game of Rugby). You can see it in action here: https://www.youtube.com/watch?v=Teuko347ezM It opened in 1948 and closed in 1959. The loco in the pic is an ex-LMS Class 5 of some sort (either a two-cylinder 'Black Five' or a three-cylinder 'Jubilee' - I don't know enough to tell the difference), so it's probably from quite early in the RTS's existence, evaluating existing designs from the ex-private railways to determine the design of the new BR Standard types. So the pic is probably from 1950 or so. Perhaps more for Locomotive Insanity, but the engineer in the pic is probably (unknowingly) loving up the test. One of the main projects at the RTS was to scientifically evaluate the power output of various major steam loco designs so BR knew what horsepower was needed by the diesel locos that would replace them. Whether it was in the tests themselves or the interpretation of the data afterwards, but across the board the figures obtained by the RTS were much lower than was regularly being achieved out in the real world. On the basis of the tests BR decided that it needed 1000hp diesels to replace general-purpose mixed-traffic steam locos (like the LMS Black Five) and 2000hp ones to replace the heaviest freight and fastest express passenger types. On entering service these diesel proved to be badly underpowered, often struggling to match the speeds and timings achieved by steam and certainly not offering any improvement. Experience later showed that you needed at least 2500hp to reliably match the steam express timings, and at least 3000hp to usefully offer faster services. And you needed at least 1500hp for a general purpose type, if not more like 1750hp. The fact that the early BR diesels were underpowered for their work and so had to be thrashed everywhere they went was one reason why they were so unreliable. AFAIK it's never been properly identified why the RTS data was so wrong. If it wasn't some fundamental error or flaw in the measuring machinery, were they measuring the right thing? The RTS were focussing on measuring maximum sustained power output. But a steam locomotive can generate far more power than is sustainable if needed - if you're willing to work the engine hard it will consume steam faster than the boiler can generate it. Steam pressure will inevitably fall as a result, but that can be enough to climb a short, sharp grade or quickly accelerate a heavy train. If the Black Five on the rollers could only sustain 1000hp but readily produce bursts of 1500hp if needed for its work, that would not show up in the tests Rugby were doing. And diesels don't work that way - once your diesel engine set up to generate 2000hp at 750rpm is at maximum speed and throttle, that's it. You can't 'mortgage' pressure for power like on a steam engine. It's also been speculated that BR, inexperienced with electrical engineering, did not properly account for the power losses between engine and the rail - the diesel engine itself may produce 2000hp at the shaft, but you'll be losing a quarter of that between there and the rail. Interestingly, in the last days of the LMS that railway had built two prototype diesel locos. This was before the Rugby Testing Station was built, and based entirely on their own running data (tonnage of train moved over such a gain of height in such a time) and 'vibes' based on 100+ years of experience, they decided that each one needed to be 1600hp - which they stated was equivalent to a Black Five when working singly, and equivalent to a big express Pacific when working in multiple (3200hp). And they were proved right. BalloonFish fucked around with this message at 17:02 on Aug 8, 2023 |
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Aug 8, 2023 16:59
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Humphreys posted:If the owner of Segway can find a way....
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Aug 8, 2023 17:10
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BuckyDoneGun posted:It's a tech demo prototype. It's not for competition. They released the customer version at Goodwood, and it's an £820,000 track toy for billionaires. When those guys want track time, they have no problem getting it. This. It's 2023, nobody's out there building a random car with out-there tech and then deciding to go racing with it. If you want to go racing in an existing series, you build to that series' ruleset.
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Aug 8, 2023 18:35
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This post loving rules. You loving rule. Thank you for this; It’s absolutely fascinating, and also metal. 
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Aug 8, 2023 18:56
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quote:The D155W is the first amphibious bulldozer worldwide and was manufactured in 1971. A total of 36 machines were produced. There are still some restored units in operation around the world. I would imagine these aren't unpopular for land reclamation projects in urban areas? My 5 year old nephew watches a lot of construction truck stuff and I've never heard of an amphibious bulldozer before 
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Aug 10, 2023 00:39
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BalloonFish posted:That's the British Railways Rugby Testing Station (that's a Testing Station at Rugby, not a Testing Station for the game of Rugby). You can see it in action here: Awesome. Lookit the lines on that loco in the video. Now *that's* design. MrYenko posted:This post loving rules. You loving rule. Thank you for this; It’s absolutely fascinating, and also metal. Hadlock posted:I would imagine these aren't unpopular for land reclamation projects in urban areas? My 5 year old nephew watches a lot of construction truck stuff and I've never heard of an amphibious bulldozer before That's pretty neat. Guess cooling is not an issue. 
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Aug 11, 2023 15:13
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Darchangel posted:That's pretty neat. Guess cooling is not an issue. 
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Aug 11, 2023 16:00
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BalloonFish posted:That's the British Railways Rugby Testing Station (that's a Testing Station at Rugby, not a Testing Station for the game of Rugby). You can see it in action here: I knew who was making this post before I checked the username! Never stop posting please and thank you, that’s fascinating information!
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Aug 11, 2023 17:37
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I wonder where that testing station was located, I'm not a million miles away from Rugby... Anyway, anything can be resurrected if you have the skill, the drive and the time. Look at how little of the car was actually structural. I love this car so much.  https://twitter.com/canadian_rust/status/1690058889876672512?t=PZgiRmNpbphHbmU5XrOSXw&s=19
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Aug 11, 2023 19:42
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Some interesting engineering from Ford in the mid 60's, purposefully making the frame flexible and using the body as a "bridge" between body mounts. https://www.youtube.com/watch?v=ScISU2pS_40
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Aug 12, 2023 16:10
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Maybe that's why the rear end end of my Bonneville has a harmonic lateral twerk between 32-37MPH and again at 74-78MPH? Not Ford, but '66. I have tried/replaced everything over the past 20-years. Maybe it's just the 8-foot-long rear quarters, but there is a noticeable increase in latch-side door gap whenever I jack it up. It goes back once lowered, and the doors never stop working (they don't bind if jacked from the rear) PainterofCrap fucked around with this message at 01:02 on Aug 13, 2023 |
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Aug 13, 2023 00:11
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Applebees Appetizer posted:Some interesting engineering from Ford in the mid 60's, purposefully making the frame flexible and using the body as a "bridge" between body mounts. Chevy ford haters like to use this as a negative point about ford trucks putting them on ramps on one side and going "look at that back wheel drop!" Which totally isn't a problem in this engineering space. (what is a problem is that the cab is also then so distorted you can't open or close the doors lol, whoops)
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Aug 13, 2023 00:39
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Tangentally I was reading this article today and the author argues for calling them frame-AND-body not frame on body as it's a stressed member https://www.curbsideclassic.com/automotive-histories/tech-history-vintage-article-the-perimeter-frame-body-and-frame-not-body-on-frame/ Furthermore the panther body (crown vic) was the last frame and body design manufactured
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Aug 13, 2023 01:47
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PainterofCrap posted:Maybe that's why the rear end end of my Bonneville has a harmonic lateral twerk between 32-37MPH and again at 74-78MPH? I think it's just a GM family quirk of the era. I remember my parents car shopping when I was a kid in the 60s. They hated Chevys because the back swayed around just as you describe and made my mom car sick.
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Aug 13, 2023 01:50
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Took the little one to HONDA WARS car show and took some photos. Not a honda, but too good to pass up.  Otherwise, I've apparently got a thing for plexi hoods and boosted 4-cylinders.    And this itty bitty beat was pretty neat.  of course, with a clear cover for the engine. One exhaust tip per cylinder! 
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Aug 13, 2023 02:08
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Forever kicking myself for not picking up a beat when they were £2500, same with £4k Autozams. 
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Aug 13, 2023 08:02
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Olympic Mathlete posted:Forever kicking myself for not picking up a beat when they were £2500, same with £4k Autozams. AZ-1, you can still get 4k Autozams they are just going to be a truck or a van 
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Aug 13, 2023 18:40
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dangit now all I can think about is race wars from F&F and giggling like a dummy
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Aug 14, 2023 06:36
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Olympic Mathlete posted:Forever kicking myself for not picking up a beat when they were £2500, same with £4k Autozams. $3,000 Soarers and Aristos. $8000 R32 GT-Rs. 
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Aug 14, 2023 06:44
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Looks like there's a new automotive contraption! It's probably dumb but still fun to see someone trying weird poo poo. https://i.imgur.com/2ztqVrm.mp4
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Aug 14, 2023 10:49
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i guess they're all just individual hub motors? does it do some sort of tank steering, i wonder how well that works.
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Aug 14, 2023 11:02
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That looks like a minor gently caress-up means forward ejection.
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Aug 14, 2023 11:07
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Powershift posted:That looks like a minor gently caress-up means forward ejection. Raluek posted:i guess they're all just individual hub motors? does it do some sort of tank steering, i wonder how well that works.
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Aug 14, 2023 11:25
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That's a pretty long way to go to invent a horse, but less practical and more stressful to ride.
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Aug 14, 2023 11:38
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Powershift posted:$3,000 Soarers and Aristos. $8000 R32 GT-Rs. 
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Aug 14, 2023 12:06
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Love how it cuts away just as the front starts to dive into the water.
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Aug 14, 2023 13:41
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Ether Frenzy posted:That's a pretty long way to go to invent a horse, but less practical and more stressful to ride. Less stressful for the horse though
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Aug 14, 2023 14:12
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Applebees Appetizer posted:Some interesting engineering from Ford in the mid 60's, purposefully making the frame flexible and using the body as a "bridge" between body mounts. Super interesting video that I also feel is padded out to be over 10 minutes. Thanks algorithm. Also has me reconsidering my plans of keeping the 64's rear suspension stock. OK not really but a little.
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Aug 14, 2023 16:54
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https://i.imgur.com/eqw8n75.mp4
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Aug 14, 2023 16:54
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A+ username/post combo.
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Aug 14, 2023 17:21
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NEEEEVER LIIIIIFT
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Aug 14, 2023 18:23
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mobby_6kl posted:Looks like there's a new automotive contraption! It's probably dumb but still fun to see someone trying weird poo poo. Automotive centipede
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Aug 14, 2023 23:07
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The Door Frame posted:Less stressful for the horse though This post reminds me of a very good ONEHELLOFATOWN sticker  Japan's 660cc K4GP race is live right now. https://www.youtube.com/live/gKx7wbC3KqQ?feature=share Olympic Mathlete fucked around with this message at 01:08 on Aug 15, 2023 |
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Aug 15, 2023 00:02
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