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babyeatingpsychopath posted:Here in the South, it typically means there's a group of cars all running at significantly higher speed than other traffic while very close to each other. I've seen 10-30 car "mobs" at 85-95mph at drafting distances (6-8ft) between cars on the interstate in Georgia. yeah there's car clubs that drive down to galveston on the weekends and they'll all be blasting down the road racing each other, doing dragraces at lights, slowing other traffic down to let the guys ahead race, it's kind of annoying but it's better than biker weekend.
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Oct 29, 2020 17:16
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LifeSunDeath posted:yeah there's car clubs that drive down to galveston on the weekends and they'll all be blasting down the road racing each other, doing dragraces at lights, slowing other traffic down to let the guys ahead race, it's kind of annoying but it's better than biker weekend. We did it, except for the annoying “slowing other traffic down” part, on our way out to Goliad for the Texas Mile years ago. I was friends with a bunch of lawyers who had really nice cars at the time. I had an old 911SC with no A/C. Who knew that the Mobber was inside me all along?
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Oct 29, 2020 17:30
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namlosh posted:We did it, except for the annoying “slowing other traffic down” part, on our way out to Goliad for the Texas Mile years ago. I was friends with a bunch of lawyers who had really nice cars at the time. I had an old 911SC with no A/C. Lol I have an infiniti with some tuner elements and they slowed down around me on highway 6 and thought I was going to join them, I just kept old person driving down the road lol. e, content: https://www.youtube.com/watch?v=x4fdUx6d4QM LifeSunDeath fucked around with this message at 04:15 on Oct 31, 2020 |
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Oct 29, 2020 17:46
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https://i.imgur.com/6h3EeYp.gifv Other cars the hazard lights come on, French cars the wipers come on
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Nov 18, 2020 03:40
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Seen out on the road, one of the white shocks at the back had popped right out the middle and was flapping around with each bump I thought I might hang back a bit.
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Nov 18, 2020 03:47
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Can someone explain to me at 15:18 wtf is being drained into engine? Is that diesel? https://www.youtube.com/watch?v=fBPPv88KKIM edit... ah, well poo poo that looks like *coolant. Gath fucked around with this message at 01:20 on Nov 19, 2020 |
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Nov 19, 2020 01:17
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Why didn't you just watch for another minute until the driver explains exactly what it is?
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Nov 19, 2020 02:01
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Elviscat posted:Why didn't you just watch for another minute until the driver explains exactly what it is? because it looks like more than it is. Seriously the coolant is confusing as well. I think it also falls under, horrible wtf.
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Nov 19, 2020 03:06
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Oh yeah, absolutely. That engine seems to be air cooled, with a gravity fed "total loss" supplemental coolant system fed from the tank on the roof.
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Nov 19, 2020 04:00
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It looks to be the same design as an old stationary lister engine. It has a tank on the cylinder full of water. As the water boils, it takes heat away from the engine. By dumping cold water into the tank, he's cooling it faster than evaporation. You need to periodically add water to those engines anyway.
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Nov 19, 2020 13:51
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That can't be original? That big old truck is powered by a single-cylinder diesel industrial engine? Kind of impressive that it works all if a retrofit. Weird as hell if original.
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Nov 19, 2020 21:13
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Darchangel posted:That can't be original? That big old truck is powered by a single-cylinder diesel industrial engine? Kind of impressive that it works all if a retrofit. Weird as hell if original. Welcome to developing countries where labor and materials to hack something together are cheaper than buying getting the right part/item.
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Nov 19, 2020 21:42
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Cojawfee posted:Welcome to developing countries where labor and materials to hack something together are cheaper than buying getting the right part/item. I'm mainly just wondering why a single-cylinder industrial engine rather than another car engine or something. Of course, the answer is "because that's what they had." I'm just surprised they couldn't find a forklift engine or something.
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Nov 19, 2020 22:05
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Darchangel posted:I'm mainly just wondering why a single-cylinder industrial engine rather than another car engine or something. Of course, the answer is "because that's what they had." I'm just surprised they couldn't find a forklift engine or something. Rural areas in the developing world usually don't have a lot of forklifts. They do have a lot of motor plows and motorcycles. You get a good view at 15:00. The engine looks and sounds like it started life in farming equipment like this before it was hacked into a truck drivetrain. Incidentally, the "drip a bit of water on an air-cooled engine's fins to keep it from blowing up" technique is super common in the flat parts of Cambodia, where people haul multi-ton third wheel trailers with Super Cubs. Space Gopher fucked around with this message at 22:38 on Nov 19, 2020 |
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Nov 19, 2020 22:31
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Space Gopher posted:Incidentally, the "drip a bit of water on an air-cooled engine's fins to keep it from blowing up" technique is super common in the flat parts of Cambodia, where people haul multi-ton third wheel trailers with Super Cubs. https://www.youtube.com/watch?v=JAx47JEDiFo It's 20 years ago I was in Cambodia, but there were some unfamiliar (to me) things on the road. Apart from all sorts of creative uses of Super Cubs there were lots of improvised vehicles similiar to this:  Sometimes metal framed, sometimes bamboo/wood, all sorts of engines and wheels were used.
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Nov 20, 2020 08:59
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Darchangel posted:That can't be original? That big old truck is powered by a single-cylinder diesel industrial engine? Kind of impressive that it works all if a retrofit. Weird as hell if original. It looks like it was probably sold as an incomplete truck when new? Not in the "truck chassis with an engine" style of truck that gets sold to coach and bus builders, more like the glider rigs you can buy in the US - complete truck, without a drivetrain. The 2 miles on the odometer and non-working speedometer kinda scream "this thing has never had the proper drivetrain in it after leaving the factory, miles showing are from when we dropped a drivetrain in it to move it around the shipping yard".
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Nov 20, 2020 19:04
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🙁Good Sphere posted:
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Nov 20, 2020 19:17
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For England, James? No, for me.
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Nov 20, 2020 19:22
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What a shame. Arecibo had 57 years of service, with the most recent instrumentation upgrade only about a decade ago. Arecibo's range resolution for near-Earth asteroids went from ~150m down to just 7.5m over the years. There's no good replacement for it, either. Arecibo was able to transmit close to 1MW or RF power (2-7 GHz I think?) to literally ping targets. No other telescope can do this, afaik. (Sometimes the ping would take so long that Goldstone's DSS-14 in Californa picks up the echo.) Yeah I spent a lot of my graduate years working on Arecibo data
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Nov 20, 2020 20:14
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I’m glad I got to take a tour of it when I was on the island last summer.
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Nov 20, 2020 20:19
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TotalLossBrain posted:What a shame. Arecibo had 57 years of service, with the most recent instrumentation upgrade only about a decade ago. I work as a satcom guy and my company produces a few carriers ranging from 150W - 400W C-band. A megawatt of RF is a thousand thousand watts like, a few hundred thousand satellite TV uplink carriers at once. 
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Nov 20, 2020 21:15
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Wasabi the J posted:. You ever heard of HAARP? Lol. 
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Nov 20, 2020 21:20
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Wasabi the J posted:. to be fair, this isn't continuous wave RF but very fast pulses encoded at 20 MHz. That power can reach out there - Arecibo has done surface scans of Mars, Venus, and Mercury. By the time the echo comes back it's extremely weak. The receivers are cryogenically cooled to reduce thermal noise. Arecibo did user (weaker) CW transmission to establish the initial range estimate for a target. It's still not on for a long time, though, and not at the high power levels. Those are reserved for delay/Doppler scans. TotalLossBrain fucked around with this message at 21:26 on Nov 20, 2020 |
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Nov 20, 2020 21:24
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Space Gopher posted:Rural areas in the developing world usually don't have a lot of forklifts. They do have a lot of motor plows and motorcycles. You get a good view at 15:00. The engine looks and sounds like it started life in farming equipment like this before it was hacked into a truck drivetrain.  https://jalopnik.com/how-china-built-some-of-the-world-s-most-versatile-vehi-1837377809 donut fucked around with this message at 00:22 on Nov 21, 2020 |
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Nov 21, 2020 00:18
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That's probably a generator not an alternator.
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Nov 21, 2020 00:23
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TotalLossBrain posted:to be fair, this isn't continuous wave RF but very fast pulses encoded at 20 MHz. That power can reach out there - Arecibo has done surface scans of Mars, Venus, and Mercury. By the time the echo comes back it's extremely weak. The receivers are cryogenically cooled to reduce thermal noise. Still impressive though. I have a thing with not fully grasping scales that I'm unfamiliar with, and RF transmission is one thing I have a decent grasp at. I'm truly in awe of what the deep space dudes are capable of with their systems, as well.
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Nov 21, 2020 06:10
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Wasabi the J posted:Still impressive though. I have a thing with not fully grasping scales that I'm unfamiliar with, and RF transmission is one thing I have a decent grasp at. If you're into signal telemetry, check out the Deep Space Network status site here: https://eyes.nasa.gov/dsn/dsn.html Loads of interesting info like what spacecraft are being tracked, transmit and receive power, data rate, and round trip time. A lot of the newer spacecraft being tracked can talk 1 Mb/s even from Mars. And then there's Voyager 2 with a round-trip time of 18 hours trucking away at 900 bps in turbo mode received at -155 dBm lol TotalLossBrain fucked around with this message at 21:14 on Nov 21, 2020 |
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Nov 21, 2020 06:54
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Chrpno posted:https://i.imgur.com/6h3EeYp.gifv "Let me clear le screen monsieur so you can see how le hosed you are"
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Nov 21, 2020 21:02
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TotalLossBrain, thanks, cool link. Watching Voyager 2 now, Range 22.71 Billion KM Round-trip Time of 1.75 days 169 bps -156.63 dBm (2.17 x 10-22 kW) I've mucked about with some pretty nifty spectrum analyzers using handmade loop antennas in order to debug PLLs running at a few GHz. Seeing signal levels this low always gave me a bit of pause that the analyzer could really do that. Seeing it expressed as 10-22 kW really drives it home for me.
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Nov 22, 2020 09:44
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LifeSunDeath posted:You ever heard of HAARP? Lol. When I was a kid the public library had a HAARP conspiracy book mixed in with the physics books. Confused the hell out of me when I checked it out once, like man I don't think radio waves do any of these things guys.
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Nov 22, 2020 16:57
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Pham Nuwen posted:When I was a kid the public library had a HAARP conspiracy book mixed in with the physics books. Confused the hell out of me when I checked it out once, like man I don't think radio waves do any of these things guys. i'm personally loving all the 5g conspiracy people.
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Nov 22, 2020 17:07
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So apparently when a Tesla crashes badly it sends burning shrapnel everywhere https://www.autoblog.com/2020/11/19/tesla-crash-100-mph-scatters-burning-batteries/#slide-2279191
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Nov 22, 2020 17:47
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Applebees Appetizer posted:So apparently when a Tesla crashes badly it sends burning shrapnel everywhere  god I bet the fire department just loves cleaning all these 18650s up, goddamn. Elon Musk should have to personally clean this poo poo up.
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Nov 22, 2020 17:58
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Move fast and break things, that's the entrepreneurial spirit
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Nov 22, 2020 18:28
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Applebees Appetizer posted:So apparently when a Tesla crashes badly it sends burning shrapnel everywhere yeah check em out cooking off like bottle rockets at 7:00 https://www.youtube.com/watch?v=WdDi1haA71Q&t=402s as usual when tesla fires come up i will point out that it's kind of a toss-up whether this is better or worse than a gasoline fire. any time you have some sort of condensed store of energy, there is probably a way to make it all come out in a much shorter time than desired and you're gonna have a bad day. gasoline fires probably don't launch white-hot balls of burning alkali metals onto your roof though Sagebrush fucked around with this message at 18:56 on Nov 22, 2020 |
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Nov 22, 2020 18:52
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Sagebrush posted:yeah check em out cooking off like bottle rockets at 7:00 So what you’re saying is a steam car heated by shovelling in batteries with a gasoline spray superheater is the way of the future?
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Nov 22, 2020 19:20
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Guy in one of my Facebook groups just posted this. Never seen one before like this, I think from the milky fluid it probably is water contaminated and froze overnight and partially cracked it, then it popped from hydraulic pressure when he started it.
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Nov 22, 2020 19:41
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That looks infected in my medical opinion.
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Nov 22, 2020 19:50
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kastein posted:Guy in one of my Facebook groups just posted this. Never seen one before like this, I think from the milky fluid it probably is water contaminated and froze overnight and partially cracked it, then it popped from hydraulic pressure when he started it. THAT is an interesting failure. Wow.
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Nov 22, 2020 20:22
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kastein posted:Guy in one of my Facebook groups just posted this. Never seen one before like this, I think from the milky fluid it probably is water contaminated and froze overnight and partially cracked it, then it popped from hydraulic pressure when he started it. Oh look, a Saginaw steering box. I've been fighting with mine for the past two days. It's why I can't lift my arms above the plane of my shoulders. That's a poo poo-ton of water contamination. What popped is the end cap/retainer for the steering gear/block. The nut there is for adjusting lash. The part that cracked is aluminum (the rest of the case is iron) and can be replaced without removing the box. However, given the conditions inside the box, it would be advisable to remove & rebuild it. Or replace it, if it's cheap enough (mine is $465 so rebuild it is)
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Nov 22, 2020 22:05
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