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My Linux Rig posted:did they stop production to keep all of their long range cars from disappearing? they made rwd only available on mid-range. if you want long-range you also have to get awd. they also removed all mention of standard-range, so mid-range is the smallest range. this was on the model s, i guess, and they are actually making two battery sizes for the model 3 Endless Mike fucked around with this message at 22:50 on Feb 19, 2019 |
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Feb 19, 2019 22:46
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Feb 19, 2019 23:02
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Endless Mike posted:my fantasy rich car is a 90s buick roadmaster with peeling vinyl siding with whatever the current hotness smallblock is in it the sedans were way cooler because they had more buick-specific trim, but they didn't have the vinyl option hard tradeoff
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Feb 19, 2019 23:03
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Eeyo posted:i think this is how the koenigsegg regera works (if you swap out your rotary engine for a more traditional engine). the ICE has single-speed coupling to the wheels so is useless < 30mph and 2 wheel-mounted electric motors accelerate the car. i'm not a car person so i might be getting it wrong. That's like 20 times my car
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Feb 19, 2019 23:16
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Eeyo posted:i think this is how the koenigsegg regera works (if you swap out your rotary engine for a more traditional engine). the ICE has single-speed coupling to the wheels so is useless < 30mph and 2 wheel-mounted electric motors accelerate the car. i'm not a car person so i might be getting it wrong. There are then three electric motors, one on the front of the crankshaft and one on each of the halfshafts. The one attached to the engine is used as a starter, generator, and for torque fill. The ones on the halfshafts are used for regen, torque vectoring, low speed acceleration, and reverse. It has enough torque from the 1200 horsepower twin turbo V8 that it can actually drive on the gas engine alone, but it doesn't do that normally because it's easier to just launch on the electric motors. Also there's of course no reverse without the EV part working. https://www.youtube.com/watch?v=glf_k4qGBAA
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Feb 20, 2019 00:07
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Lord Stimperor posted:That's like 20 times my car that’s as many as two tens
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Feb 20, 2019 00:08
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Notorious b.s.d. posted:this is a super rad cutaway technical line art drawings in general are pretty great. edit: 
Shifty Pony fucked around with this message at 00:20 on Feb 20, 2019 |
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Feb 20, 2019 00:13
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My Linux Rig posted:did they stop production to keep all of their long range cars from disappearing? actually, they're using floats
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Feb 20, 2019 00:29
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El_Elegante posted:that’s as many as two tens and that's terrible
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Feb 20, 2019 00:36
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Chris Knight posted:and that's terrible https://twitter.com/TeslaOwner3/status/1097627550707154945
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Feb 20, 2019 02:25
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someone please reassure me that my Seattle tax dollars won't be paying for that bullshit
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Feb 20, 2019 02:55
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why the gently caress do all these people put the name tesla in their social media nicknames, are they hoping to get some kind of large following so they'll receive extra special treatment from 'ol musky despite even the biggest youtubers expressing their frustration with tesla service?
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Feb 20, 2019 03:03
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i have very bad news for you re: brands and personal identity in tyool 2019
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Feb 20, 2019 03:12
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a significant portion of twitter bios chosen at random will feature a list of brands
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Feb 20, 2019 03:12
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Endless Mike posted:my fantasy rich car is a 90s buick roadmaster with peeling vinyl siding with whatever the current hotness smallblock is in it this is the only proper thing to do with those cars https://www.youtube.com/watch?v=ooFWD5w6pXA
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Feb 20, 2019 03:15
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how long does it take to get a new battery on backorder
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Feb 20, 2019 09:41
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jit bull transpile posted:I just want a rotary that is fast off the line. efficiency should not be a design concern for a rotary car. one of my fantasy rich person dreams is to put a 20a with a huge port into a miata and just destroy tires at laguna seca all day i'm hoping to get a transfer to Japan next year and if I can manage it then I'll bring home a Eunos 20B. 6 seconds to 100kph with a 90's four speed auto isn't bad.
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Feb 20, 2019 09:50
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jit bull transpile posted:I just want a rotary that is fast off the line. efficiency should not be a design concern for a rotary car. one of my fantasy rich person dreams is to put a 20a with a huge port into a miata and just destroy tires at laguna seca all day drat I've never heard of a closet going that fast
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Feb 20, 2019 10:59
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Sagebrush posted:the seat belt pretensioners in the new beetle (i.e. the old new beetle, from 1998) use a tiny little wankel engine that runs on a pair of gas generator pellets Eeyo posted:i think this is how the koenigsegg regera works (if you swap out your rotary engine for a more traditional engine). the ICE has single-speed coupling to the wheels so is useless < 30mph and 2 wheel-mounted electric motors accelerate the car. i'm not a car person so i might be getting it wrong. evil_bunnY fucked around with this message at 11:15 on Feb 20, 2019 |
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Feb 20, 2019 10:59
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Nfcknblvbl posted:why the gently caress do all these people put the name tesla in their social media nicknames, are they hoping to get some kind of large following so they'll receive extra special treatment from 'ol musky despite even the biggest youtubers expressing their frustration with tesla service? im sure its a throwaway account to avoid getting harassed by fanboys
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Feb 20, 2019 11:10
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Maximum Leader posted:im sure its a throwaway account to avoid getting harassed by fanboys good call, sucks about the fanboys thing though
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Feb 20, 2019 14:45
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Combat Theory posted:yeah this is wrong As an industry man, are you for turbos? There must be a difference in reliability between turbo and non-turbo engines, especially in the long run?
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Feb 20, 2019 14:55
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Mr. Bonkers posted:As an industry man, are you for turbos? There must be a difference in reliability between turbo and non-turbo engines, especially in the long run? That entirely depends on layout, technology and goal of turbo charging. Charging a diesel has nothing but benefits and has been the industry standard since the 90s. There is no reliability concern because diesel exhaust Temps are so low that you don't need advanced metallurgy and tech like VTG bolts in easy. The problem child is the modern gasoline engine. With the classic approach of turbo charging like done in a Nissan SR20DET versus a Nissan SR20DE, turbo charging is also a solved problem. If you run a big turbo charger with double cooling, waste gate control (at best external but ain't no one paying for that) and you endure the efficiency loss due to lowered compression and fuel enrichment so that both engine and turbo stay safe and far away from thermal limits, a turbo is not a problem either for reliability. The concerns with turbo charging are with the modern downsized gasoline engine, especially with VTG. VTG in itself is a heavily misunderstood tech because no one talks about the disadvantages from a fluid dynamics perspective. What VTG does is twist or spin regulation, which is a lot more complex than the simple image of "low pressure high velocity" suggests. VTG does this by applying a spin onto the exhaust flow that changes the efficiency and pressure of the turbine. It is a bit like the misterious stator ring in a torque converter. The problem is that the VTG isn't only improving low end efficiency, it's also decreasing top end efficiency, that's how it's boost regulation works. Because the regulation is efficiency decreased it means that at high loads you don't reduce the exhaust back pressure like a waste gate does, and you also don't reduce the absolute amount of exhaust flow. All engine exhaust always goes to the turbine, VTG is merely changing the amount of work that is excerted on the turbine blades. However, because your absolut exhaust flow through the turbine is higher, your heat load is too. All this while VTG units sit in poo poo hot exhaust gas compared to a diesel system. It's asking for trouble basically. In short, you downsize an engine to keep original power output and improve low end efficiency, but it costs you efficiency on top and usually more than what you gain low down. And your original reliable turbo system becomes a finicky piece of problem tech that is now triple prone to heat failure. Same for the entire engine. Copy paste for basically every tech of the last 15 years like high pressure VANOS, valvetronic, multi air, fuel stratisfied direct injection, low viscosity high mileage oils, hot V blocks and the list goes on and on and on. It has gotten so bad on the German market that used car prices are mirrored. You now pay more for older cars than for newer ones second hand because it has settled in the common car buyer that everything 2005 and newer is basically a lost generation to the automotive keeper. E: my heritage is with ultra high RPM naturally aspirated engines so if you just ask for what I would want to see, it would be exactly that. In my opinion (and that's also the reason I'm leaving this industry for the defense industry) we have sadly succeeded in dumbing down the driver to a level shortly above the passenger. Everything is aimed nowadays at hiding the fact that you operate a fire breathing, roaring , metal made mechanical wonder of technology. Cars have gotten too automated, too insulated, fat, unresponsive, unserviceable, and there has hardly ever been such a vast gap in the interface between man and machine. And again, looking at the second hand market the people apparently crave this old mechanical connection, because all the cars that we associate with that are absolutely mad priced at the moment. I mean like 300 or 400 percent price increase in 10 years mad. Yet I'm looking at my work so far, what I am asked to design, the list of requirements that come in from loving *** and it's "dry weight 2 tons" "serviceability not required" "maximum lifetime...." "infotainment interface" Just not the type of design I wanna have my name on to be honest. Combat Theory fucked around with this message at 17:07 on Feb 20, 2019 |
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Feb 20, 2019 16:47
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Arstechnica really coming out swinging for their homeboy today, lmao
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Feb 20, 2019 17:05
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Beamed posted:Arstechnica really coming out swinging for their homeboy today, lmao You say that and don't link and post snippets? For shame.
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Feb 20, 2019 17:16
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Beamed posted:Arstechnica really coming out swinging for their homeboy today, lmao in defence of elron musk: Tim 'I can swallow this whole thing' Lee posted:But the reality may be more banal: Musk is a famously demanding and temperamental boss. Working for him isn't much fun for anyone, and some people will find the experience so grueling that they can't manage it for more than a few weeks. Others will get burned out after a few years.
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Feb 20, 2019 17:18
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small engines with turbos have so much efficiency loss at high rpms cause they have to inject extra fuel to prevent engine knock. engineers have to come up with clever ways to deal with all the extra heat, like the kia stinger has an exhaust valve with sodium inside so it won't ignite the fuel too early
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Feb 20, 2019 17:19
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infernal machines posted:in defence of elron musk: "To be fair to Elon, he is a gigantic raging rear end in a top hat the likes of which we haven't seen since Steve Jobs" seems like a solid defense strategy.
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Feb 20, 2019 17:21
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iospace posted:You say that and don't link and post snippets? For shame. replacing the reformer hired as chief counsel after two months is fine and normal, probably because musk is a famously lovely boss. the fact that an experienced trial lawyer was replaced by a muppet whit their own ties to elon's solar city grift is not in any way concerning for the company.
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Feb 20, 2019 17:23
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Nfcknblvbl posted:small engines with turbos have so much efficiency loss at high rpms cause they have to inject extra fuel to prevent engine knock. engineers have to come up with clever ways to deal with all the extra heat, like the kia stinger has an exhaust valve with sodium inside so it won't ignite the fuel too early Small correction, sodium filled exhaust valves are almost ancient tech and have been used throughout the industry since the 80s far before downsizing. Thermal flow through valves is a general tricky subject because the majority of heat that is ingested by the valve is transferred through the thin stem into the valve guide, yet we need the cooling on the valve seat to prevent it from burning up because of the high resistance to heat transfer of the thin stem. What sodium does is shaker cooling. The sodium transports the heat from the valve plate to the steam by physically moving through the valve cavity when it's shaking up and down. Its a good tech quite honestly and the only trick is how to get it in the valve and seal everything shut in a mass production fashion.
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Feb 20, 2019 17:27
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Nfcknblvbl posted:small engines with turbos have so much efficiency loss at high rpms cause they have to inject extra fuel to prevent engine knock. engineers have to come up with clever ways to deal with all the extra heat, like the kia stinger has an exhaust valve with sodium inside so it won't ignite the fuel too early that's really cool thanks to this thread turning my interest towards turbos and poo poo I spent about 5 minutes last night laughing at the word tribology the rubbin' science
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Feb 20, 2019 17:29
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Nfcknblvbl posted:small engines with turbos have so much efficiency loss at high rpms cause they have to inject extra fuel to prevent engine knock. engineers have to come up with clever ways to deal with all the extra heat, like the kia stinger has an exhaust valve with sodium inside so it won't ignite the fuel too early My personal beef with this issue is it, by all means, is a relative non-issue. I rarely if ever exceed 4k RPM in my car (redline around... 6.5k? I don't drive as much anymore and really haven't gotten near it), and that's only when I'm getting on the highway and need to accelerate faster than pulling onto a surface street. So most drivers will never even get near the point where it becomes a factor (I tend to run highways at around 3k). If you're driving a performance car, then sure, complain because you'll use the whole end. A bigger issue does stem from the fact that the EPA's fuel mileage testing method is hilariously outdated, at least for highway ratings. They test at 55 mph, not 65 or 70 mph which most rural interstate highways are signed at these days. I'm going to give the city driving a pass, mind you. That hasn't changed much.
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Feb 20, 2019 17:30
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Combat Theory posted:What sodium does is shaker cooling. The sodium transports the heat from the valve plate to the steam by physically moving through the valve cavity when it's shaking up and down. so it's like having salt shaker coolers, nice
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Feb 20, 2019 17:30
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Nfcknblvbl posted:small engines with turbos have so much efficiency loss at high rpms cause they have to inject extra fuel to prevent engine knock. engineers have to come up with clever ways to deal with all the extra heat, like the kia stinger has an exhaust valve with sodium inside so it won't ignite the fuel too early those are the ones that basically act as heat pipes inside the valve right? sodium phase changes under heat from the cylinder, floats to the top, then drops back down when it dumps heat in to the oil and reverts phase?
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Feb 20, 2019 17:32
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Nfcknblvbl posted:so it's like having salt shaker coolers, nice Almost yes. But the sodium turns into a liquid at operating temp.
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Feb 20, 2019 17:38
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Combat Theory posted:Cars have gotten too automated, too insulated, fat, unresponsive, unserviceable, and there has hardly ever been such a vast gap in the interface between man and machine. And again, looking at the second hand market the people apparently crave this old mechanical connection, because all the cars that we associate with that are absolutely mad priced at the moment. I mean like 300 or 400 percent price increase in 10 years mad. Yet I'm looking at my work so far, what I am asked to design, the list of requirements that come in from loving *** and it's "dry weight 2 tons" "serviceability not required" "maximum lifetime...." "infotainment interface" sorry people like me's demand for "box to get me to work that i super don't want to think about any more than i have to" is ruining stuff so bad you're making the jump to the murder brown people industry i'm actually not kidding, i mean that genuinely. like I can totally respect wanting a car that's fun to drive and goes real fast and feels like you're riding in some kind of rumbling, quaking metal dragon or w/e, i just super don't feel like driving a rumbling metal dragon to work and back every day
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Feb 20, 2019 17:50
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man this thread suddenly got really informative. struggling for purpose with tesla's demise imminent i presume
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Feb 20, 2019 18:00
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Shame Boy posted:sorry people like me's demand for "box to get me to work that i super don't want to think about any more than i have to" is ruining stuff so bad you're making the jump to the murder brown people industry
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Feb 20, 2019 18:00
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Shame Boy posted:sorry people like me's demand for "box to get me to work that i super don't want to think about any more than i have to" is ruining stuff so bad you're making the jump to the murder brown people industry just apply to race teams or something jeezus.
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Feb 20, 2019 18:09
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"brown people" is a race team th... oh
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Feb 20, 2019 18:17
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