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iwentdoodie posted:You must not live in socal. Everyone here stops at least a car length, sometimes two, behind the loving line. I guess California is big because that literally never happens in Southern California where I live.
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May 30, 2016 01:16
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fyodor posted:I guess California is big because that literally never happens in Southern California where I live. Maybe it's just my commute and area I live then. It's a running joke with everyone I work with. Temecula/Oceanside areas.
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May 30, 2016 01:48
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Lime Tonics posted:
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May 30, 2016 03:18
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iwentdoodie posted:Maybe it's just my commute and area I live then. It's a running joke with everyone I work with. In the Coachella valley it all depends on the age of the driver. Old? Two to three car lengths behind the line, then slowly creep forward until the light turns green and they wait for 5 more seconds just to be sure. Not old? On or past the crosswalk, everything else the same.
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May 30, 2016 05:49
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My theory is that people are trying to game the sensors into thinking there are more cars there, by triggering the sensor further back. I doubt that works and I doubt it is that well thought out.
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May 30, 2016 10:00
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iwentdoodie posted:Maybe it's just my commute and area I live then. It's a running joke with everyone I work with. Well-heeled old people and gnarly bros would definitely do what you said. Oof how do you deal with them?
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May 30, 2016 12:42
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Bogatyr posted:My theory is that people are trying to game the sensors into thinking there are more cars there, by triggering the sensor further back. I doubt that works and I doubt it is that well thought out. This definitely works with the left turn arrows here in southern Ontario. Most of them won't trigger if just the forward sensor detects a car, but the sensor 2-3 car lengths back will trigger it whether there's a car over the forward sensor or not. So you pull up 3 cars short of the line, covering the rear sensor, everyone looks at you like you're an idiot, but you get your advance green arrow. Beats waiting in the intersection until the light turns red and the inevitable 2-3 cars that are going to run the red go past before you can safely turn.
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May 30, 2016 14:38
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Linedance posted:This definitely works with the left turn arrows here in southern Ontario. Most of them won't trigger if just the forward sensor detects a car, but the sensor 2-3 car lengths back will trigger it whether there's a car over the forward sensor or not. So you pull up 3 cars short of the line, covering the rear sensor, everyone looks at you like you're an idiot, but you get your advance green arrow. Beats waiting in the intersection until the light turns red and the inevitable 2-3 cars that are going to run the red go past before you can safely turn. Haha I do the same thing, also in southern Ontario.
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May 30, 2016 16:42
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 Sorry for the potato-quality picture; I had to take it in a bit of a stealthy way, as the driver was approaching it. The front also had an equally bad bumper and decals.
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May 30, 2016 22:33
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Shinde posted:
"Another dumb Scion mod, I don't see th- ...that's a Prius.  "
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May 31, 2016 00:39
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Night Danger Moose posted:"Another dumb Scion mod, I don't see th- I see a hellaflushed Prius with a giant fart can every day on my commute. It's like a mid 50s woman, too.
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May 31, 2016 00:40
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There's a Prius in my neighborhood with the skinny, low rolling resistance tires replaced with wide, low-profile performance tires on aftermarket rims. I wonder how many MPG that cost.
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May 31, 2016 00:43
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It always kills me when I see hybrids being driven on the highway at 20+ MPH over the speed limit. "I spent extra money on a hybrid so I can get the same gas mileage as any other ICE powered car that is driven at a reasonable speed" / 
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May 31, 2016 01:28
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Geoj posted:It always kills me when I see hybrids being driven on the highway at 20+ MPH over the speed limit. <5 l/100km @ 130kph is pretty loving great at 5:30am on my loving lovely commute to my loving lovely office. Small victories. It should be noted that nobody spends more for a hybrid, they spend their budget. Nobody is buying a hybrid, whether $35k new or $12k used, that wasn't going to spend $35k or $12k on any other vehicle if hybrids didn't exist.
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May 31, 2016 01:45
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Geoj posted:It always kills me when I see hybrids being driven on the highway at 20+ MPH over the speed limit. It's still going to get great mileage at 80mph.
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May 31, 2016 01:53
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Yeah, my smugmobile will get 45 mpg cruising at 80. If I draft a semi (which normally do 65-70 on interstates) it'll get as high as 65 mpg. The only things I've found that really puts a dent in economy is freezing temps, hill climbing, and for reasons I haven't been able to figure out, rain.
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May 31, 2016 05:16
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Theoretically, speed shouldn't affect MPG. Though, making the engine hotter probably results in more frictional resistance, I guess. Then air resistance, which is weird voodoo.
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May 31, 2016 05:46
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Air resistance turns into a big loving deal after a point, but the difference from 55 to 75 isn't super huge.
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May 31, 2016 05:56
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Air friction increases with the square of the speed. Double your speed, force due to air friction quadruples. Going from 55 mph to 75 mph, you air friction will increase 86%.
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May 31, 2016 06:15
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Uthor posted:Air friction increases with the square of the speed. Double your speed, force due to air friction quadruples. Going from 55 mph to 75 mph, you air friction will increase 86%. Come now, that equation is very general.
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May 31, 2016 06:25
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Yeah, but it's right. You can even come pretty close to calculating actual drag with just cd and frontal surface area.
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May 31, 2016 06:35
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xzzy posted:Yeah, my smugmobile will get 45 mpg cruising at 80. If I draft a semi (which normally do 65-70 on interstates) it'll get as high as 65 mpg. Rain probably significantly changes your rolling resistance, and slightly increases air resistance due to the water on the car and thicker air due to the humidity?
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May 31, 2016 07:14
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 Styling and Excellent item.
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May 31, 2016 09:23
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iwentdoodie posted:You must not live in socal. Everyone here stops at least a car length, sometimes two, behind the loving line. I had to get out of my car the other day and knock on the window of the car in front of me to tell them to roll forward. Otherwise we were literally going to be there all night. Guess how old the driver was? Older than dirt is correct!
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May 31, 2016 09:48
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Puddin posted:
This is the version of the car that comes with the same tires they put on the fr-s/86 which started the whole "the fr-s comes with lovely prius tires!" backlash. Never mind that plenty of manufacturers like Mercedes Benz use the same tires as OEM tires. This is terrible car culture stuff. The tires are fine.
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May 31, 2016 13:16
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The Locator posted:Rain probably significantly changes your rolling resistance, and slightly increases air resistance due to the water on the car and thicker air due to the humidity? Humid air is less dense than dry air! Science! I thought it was thicker until just recently, too, but water vapor is about 2/3 the density of air, so as water vapor displaces air the density drops. Apparently this can even impact take-off speeds for aircraft.
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May 31, 2016 13:23
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Dave Inc. posted:Humid air is less dense than dry air! Science! I thought it was thicker until just recently, too, but water vapor is about 2/3 the density of air, so as water vapor displaces air the density drops. Apparently this can even impact take-off speeds for aircraft. Because the moisture takes up space that would normally be occupied by air 
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May 31, 2016 14:08
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Dave Inc. posted:Humid air is less dense than dry air! Science! I thought it was thicker until just recently, too, but water vapor is about 2/3 the density of air, so as water vapor displaces air the density drops. Apparently this can even impact take-off speeds for aircraft. Ok yes, but isn't that moisture going to provide more resistance than dry air (which is what I was trying to say)? Obviously, I could be completely wrong!
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May 31, 2016 15:06
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I was in another parking lot and a guy in a Prius rolled through the stop sign, cut down the lane, cut over, and back up the next lane, speeding obviously, all to avoid someone who was stopped for pedestrians leaving the store. This poo poo happens 2 or 3 times a week. I should get a dash cam. I really don't want to drive like an rear end in a top hat, but it seems like something you have to do to fit in around here.
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May 31, 2016 15:17
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The Locator posted:Ok yes, but isn't that moisture going to provide more resistance than dry air (which is what I was trying to say)? Obviously, I could be completely wrong! Nope, the density of the air is what generates the resistance. I got into looking at this a while back because I had the thought that high humidity would increase the cooling efficiency of engines, but it turns out the opposite is true because there's less airmass moving over the radiator (even though the water vapor can hold more heat). When you add in the actual rain, though, that can change it up (and definitely will cool down a radiator), but I'm not sure of its impact on air resistance. Water on the ground will increase rolling resistance, though, as now the tires have to push it out of the way.
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May 31, 2016 15:23
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Dave Inc. posted:Nope, the density of the air is what generates the resistance. I got into looking at this a while back because I had the thought that high humidity would increase the cooling efficiency of engines, but it turns out the opposite is true because there's less airmass moving over the radiator (even though the water vapor can hold more heat). Learn something new every day! Thanks.
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May 31, 2016 15:41
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I was browsing some auctions and came across this: https://www.huutokaupat.com/fi/v/309717 Just click the pictures. What in the gently caress.
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May 31, 2016 20:21
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At least it just looks like fibreglass over-fenders and hasn't destroyed the interior.
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May 31, 2016 20:30
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e: ya interior at least is pretty well kept
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May 31, 2016 21:35
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Eskaton posted:Theoretically, speed shouldn't affect MPG. Ah hahaha what
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May 31, 2016 22:00
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sandoz posted:Ah hahaha what Conservation of energy and whatever. I'm talking very far away from practice theoretically.
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May 31, 2016 22:18
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Eskaton posted:Conservation of energy and whatever. I'm talking very far away from practice theoretically. Please elaborate.
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May 31, 2016 22:22
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Eskaton posted:Conservation of energy and whatever. I'm talking very far away from practice theoretically. No, you're talking bollocks.
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May 31, 2016 22:22
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Eskaton posted:Conservation of energy and whatever. I'm talking very far away from practice theoretically. That theoretically, driving along a flat road at any constant speed doesn't use any fuel whatsoever.
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May 31, 2016 22:22
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In that special universe where mechanical engineers live and everything is frictionless because it makes the math easier, maintaining speed is free. 
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May 31, 2016 22:27
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