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Rev. Dr. Moses P. Lester posted:Yeah but don't those things run dry after you pump the brake a few times? What? How do you drive that you pump the brakes after coming a complete stop at a traffic light? I've driven a number of cars with auto start-stop systems and they all work like this: In an auto/DSG car I keep my foot on the brake when I stop. The engine switches off. The moment I let go of the brake the engine fires up and I drive off. In a manual car I come to a stop with the brakes. I clutch in, select neutral, clutch out, and the engine switches off. I pull up the park brake. The moment I clutch in again, the engine starts up. I select first and drive off. On autos they are near flawless. If you're in stop-go traffic that stops and then creeps, you might find that the car switches off less often to account for the fact that you're not coming to a stationary-for-10-seconds-or-longer stop, as per traffic lights. In manual cars it depends on the manufacturer's implementation. Cars with direct injection can have the combustion cycle stopped at exactly the point where firing up (upon clutch depression) is instant. I've driven a few (Fiat/Alfa, VW/Audi) manual cars that see the system freaking out when you clutch out and stall, which requires you to select neutral and pump the clutch once to restart the motor. The starter motors are also beefed up significantly to deal with constant operation. The systems are also designed to not operate in extreme cold or heat when you need ancillary systems for climate control, or when the engine is not yet up to operating temperature. Somebody a few posts up said it best, "Why pay money to go nowhere?".
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Sep 17, 2014 20:27
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Rev. Dr. Moses P. Lester posted:Yeah but don't those things run dry after you pump the brake a few times? You're stopped........why would you need to stop a few more times? efb
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Sep 17, 2014 20:37
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Sep 18, 2014 01:23
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Somehow they designed 700 phalluses in that thing. Approve.
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Sep 18, 2014 01:37
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Is it a bad thing that I can identify that engine just by looking at it? (Bristol Centaurus if anyone's interested)
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Sep 18, 2014 01:43
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Stealth Like posted:I'm not sure about the others but A/C is definitely run off it as well assuming it has enough charge. I actually just bought a 3 that is fully loaded so I can answer any questions about it. I honestly didn't even know that it had start/stop it's that seamless. Are you in the US? If so, your 3 doesn't have stop/start. I have a 2014 Mazda3 s Grand Touring with i-ELOOP (regenerative brakes and a capacitor). It's ready for stop/start (the battery even says so), but they haven't offered it in the US. Easy way to check is to watch your tach at a stoplight. Kakairo fucked around with this message at 02:25 on Sep 18, 2014 |
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Sep 18, 2014 02:13
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Motronic posted:You're stopped........why would you need to stop a few more times? But I guess the brake booster issue is moot because the start/stops automatically start when your foot goes off the brake.
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Sep 18, 2014 03:48
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MrChips posted:Is it a bad thing that I can identify that engine just by looking at it? I'm interested. Are the air cooling fins extremely finely and perfectly made, or is the thing just absolutely gigantic and they're a good 8mm apart? Is it even air cooled? Rev. Dr. Moses P. Lester posted:Obviously you don't need to but I'm surprised you think this would never happen. You never accidentally or deliberately did a couple things you didn't need to while stopped in traffic? Shift into gear and then out of it, either because you thought traffic was about to move or out of boredom, turn signal on and off, take your foot off the brake and then put it back on because you dropped something on the floor? The point is that a normal vacuum brake booster is good for a few brakes before it runs out of vacuum, not just one. The only way to get the scenario you're thinking of is to deliberately sit there pumping the brakes like a retard without ever actually fully taking your foot off the pedal.
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Sep 18, 2014 10:01
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Kakairo posted:Are you in the US? If so, your 3 doesn't have stop/start. I have a 2014 Mazda3 s Grand Touring with i-ELOOP (regenerative brakes and a capacitor). It's ready for stop/start (the battery even says so), but they haven't offered it in the US. Oh well that would be why! I just got the exact same one.
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Sep 18, 2014 12:34
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Does anyone have one of those see-thru animations showing how this engine works?
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Sep 18, 2014 12:45
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Slavvy posted:I'm interested. Are the air cooling fins extremely finely and perfectly made, or is the thing just absolutely gigantic and they're a good 8mm apart? Is it even air cooled? Both. They're big fuckin' engines which are cooled with many, many fins. Here is a Wasp Major (it's a little bit bigger than the Bristol in radius, but with 4 banks instead of 2) in situ for scale:  Dr.Caligari posted:Does anyone have one of those see-thru animations showing how this engine works? Google radial engine gifs.  To really make your head  , google rotary engine gifs. If you get too much Wankel/RX-8 hits, try searching for "Gnome" engines, they were the major manufacturers of rotaries in WWI The crank is bolted to the airframe, and the propeller is bolted to the engine block. The crank stays fixed and the whole engine spins around it. The throttle has two settings: on and off, which is why in movies they blip the magneto on landing. Oil gets pumped in through the hub and flung out (total loss system) through the pistons when they open due to centrifugal force. The oil used was castor oil, which is a diuretic, so WWI pilots often shat their pants in flight from ingesting all the engine oil. You couldn't turn one way due to the gyroscopic load of all that spinning mass, but you could turn the other way REAL quick. Captain Postal fucked around with this message at 23:42 on Sep 18, 2014 |
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Sep 18, 2014 13:08
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Didn't see this anywhere yet. https://www.youtube.com/watch?v=JXMyZ929lpY
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Sep 18, 2014 14:10
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Man, watching the suspension work on those trucks is mesmerizing. I liked the panning shot from inside a VW, just randomly had a roll cage installed because why not. 
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Sep 18, 2014 14:30
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Captain Postal posted:diuretic laxative
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Sep 18, 2014 14:42
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KillaZilla posted:Didn't see this anywhere yet. This was a pro-click. It's amazing that he can do a perpetual 360 burnout on tarmac while still maintaining forward trajectory.
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Sep 18, 2014 15:37
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How much is your average trophy truck anyway? They look like the kinda thing I need to buy for myself and a few friends if I hit the lottery. They remind me of the first time I went for a ride on a long travel mountainbike, you could theoretically roll over anything without care, so much fun.
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Sep 18, 2014 16:30
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88h88 posted:How much is your average trophy truck anyway? They look like the kinda thing I need to buy for myself and a few friends if I hit the lottery. They remind me of the first time I went for a ride on a long travel mountainbike, you could theoretically roll over anything without care, so much fun. For something that's competitive? 100k starting and reaching to half a mil or more depending on how many goodies it comes with.
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Sep 18, 2014 17:54
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Except the pig in question has no valves. the sleeve is the valve.
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Sep 18, 2014 18:01
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88h88 posted:How much is your average trophy truck anyway? They look like the kinda thing I need to buy for myself and a few friends if I hit the lottery. They remind me of the first time I went for a ride on a long travel mountainbike, you could theoretically roll over anything without care, so much fun. For like 300k you can get one of these http://www.stewartsraceworks.com/our_vehicles.php Basically a trophy truck with all the luxuries of a normal truck.
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Sep 18, 2014 18:54
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KillaZilla posted:Didn't see this anywhere yet. I put the helmet (radio/intercom) kit in that helmet!
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Sep 18, 2014 18:58
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KillaZilla posted:Didn't see this anywhere yet. That looks like so much fun. Although I gotta say I don't think I'd be as trusting as some of those folks in the video.
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Sep 18, 2014 23:10
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Captain Postal posted:
Blip the magneto!  For even more bizarre poo poo, Google the Napier Deltic.
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Sep 18, 2014 23:20
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e: ^^^^^ Airplane engines blow my mind, man.. They just seem sketchy from a car driver's perspective. #exposedengine A3th3r fucked around with this message at 00:04 on Sep 19, 2014 |
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Sep 19, 2014 00:02
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I'll take two please
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Sep 19, 2014 00:06
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the wheels are so deep that no matter how you look at them you can never truly see their face like God
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Sep 19, 2014 00:09
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  Might as well drop this. Its so stupid and unpractical on every level but god drat would I want to take my last spin on earth in it.  http://syracuse.craigslist.org/cto/4660811241.html Preoptopus fucked around with this message at 05:26 on Sep 19, 2014 |
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Sep 19, 2014 05:16
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El Scotch posted:From R/T's initial Mustang review: The Porsche looks like the van in the back pinched its bum.
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Sep 19, 2014 11:14
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A3th3r posted:e: ^^^^^ Airplane engines blow my mind, man.. They just seem sketchy from a car driver's perspective. Keep in mind that the rotary radials they're talking about are contemporary (1914-1918) with automobile engines equipped with manual-crank starters, manual choke, manual mixture, manual spark advance, exposed rocker arms, total loss oiling, etc, etc. Hell, oil filters were an option on most products from the big three into the middle of the 1950s.
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Sep 19, 2014 12:01
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 God that is sexy. Needs more than rubber bands but man, those lines are just 
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Sep 19, 2014 12:18
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Why don't you drive a 6x6 former helicopter?
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Sep 19, 2014 12:53
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El Scotch posted:From R/T's initial Mustang review: The Mustang looks like the car version of my avatar
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Sep 19, 2014 14:58
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Fart Pipe posted:The Mustang looks like the car version of my avatar Avacar
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Sep 19, 2014 15:01
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Wasabi the J posted:Avacar 
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Sep 19, 2014 15:30
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Ferremit posted:The Porsche looks like the van in the back pinched its bum. You're right, it does look like it just got goosed.
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Sep 19, 2014 17:16
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Powershift posted:Why don't you drive a 6x6 former helicopter? This is a question I wished you'd never asked, because now every time I look at my car, I'll ask the same question.
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Sep 19, 2014 19:43
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The fact it still has Aeroflot on it seals it.
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Sep 20, 2014 02:30
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Couple of cars I don't usually see in the wild here:  Is the second one a Torino or something?
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Sep 20, 2014 11:17
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Slavvy posted:Couple of cars I don't usually see in the wild here: 1968 Torino GT. A 2 year only body style; the 68 had that grille, the 69 had a horizontal bar grill, and lost the "corral" in the center.
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Sep 20, 2014 12:03
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Might as well toss it in here too. Here's Dad's M3 in Germany before it was shipped to the US and he bought it. We're trying to figure out where this photo was taken and the only thing we know is it's near the Nrburgring.
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Sep 20, 2014 21:23
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NitroSpazzz posted:Might as well toss it in here too. Here's Dad's M3 in Germany before it was shipped to the US and he bought it. We're trying to figure out where this photo was taken and the only thing we know is it's near the Nrburgring. That's pretty cool. Also that looks like the backside of Adenau to me.
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Sep 20, 2014 23:49
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