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Vindolanda posted:I used to have an MG that had been converted to a more conventional grounding setup. Usually someone adds a plate by the bonnet latch saying “this car has been converted to negative ground”. Took it to a specialist mechanic and he showed me where he’d added “maybe” in marker to a load of cars brought in by people he thought looked like aspiring amateur electricians. Lucas would be proud.
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Feb 5, 2021 13:49
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chrisgt posted:Lucas would be proud. 
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Feb 5, 2021 14:37
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video sucked, gently caress em.
LifeSunDeath fucked around with this message at 02:05 on Feb 8, 2021 |
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Feb 5, 2021 14:40
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What's the practical difference with a positive ground car? I can't imagine what the difference would be when connecting anything, one wire to switch and the other to frame or body.
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Feb 5, 2021 21:08
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Any piece of semiconductor electronics.
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Feb 5, 2021 21:12
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ArcMage posted:Any piece of semiconductor electronics. You'll have to dumb it down for me kemosabe.
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Feb 5, 2021 21:14
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Well now, here's something you don't see every day "bike was hit in front..I have the old forks/brakes etc for front—-make offer on everything or trade" https://www.facebook.com/marketplace/item/756890064865298
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Feb 5, 2021 21:28
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StormDrain posted:What's the practical difference with a positive ground car? I can't imagine what the difference would be when connecting anything, one wire to switch and the other to frame or body. Originally it seemed to make little difference, as there were cars that were positive ground and others negative, and all worked fine. People argue that one way or the other produced better sparks or reduced wire corrosion, but I'm not sure how much real difference it made. When electronic devices became more common in the 50s, there was a need to standardize so that suppliers could remain consistent across brands. Negative ground made it easier for the electronics so that was what was picked. There's probably more to it than that, but it's the gist of it as far as I know.
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Feb 5, 2021 21:30
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Deteriorata posted:Originally it seemed to make little difference, as there were cars that were positive ground and others negative, and all worked fine. People argue that one way or the other produced better sparks or reduced wire corrosion, but I'm not sure how much real difference it made. A positive ground car saved my dad from getting arrested by the border patrol. He was road tripping in some sort of old British station wagon that was + ground, back in the 70's with my mom and some friends, unbeknownst to him one of those friends had some weed in her purse that was stuffed in the glove box, they're on their way back into the states from Canada, undergoing a routine search. The BP agent reached into the glove box for the purse, and knocked the newer negative ground radio off its (probably lovely) mounting system that isolated the negative metal casing from the positive metal chassis of the car. Sparks go flying, the BP agent stumbles away and tells them to get the gently caress outta there.
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Feb 5, 2021 21:36
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Deteriorata posted:Originally it seemed to make little difference, as there were cars that were positive ground and others negative, and all worked fine. People argue that one way or the other produced better sparks or reduced wire corrosion, but I'm not sure how much real difference it made. Oh yeah I hadn't thought of packaged electronics from a newer age. Mostly anything I have added electrically has been simple electrics, lights or relays. It wasn't even until I started adding LEDs that polarity mattered.
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Feb 5, 2021 21:48
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Positive ground protected lovely cloth‐insulated wires from corrosion, at the expense of accelerating chassis corrosion through galvanic action. The chassis has a lot more meat to burn through, so this was considered a good tradeoff. Then came just one word: plastics. With modern polymer protecting the wires, it made sense to switch polarity to protect the comparatively poorly rustproofed chassis.
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Feb 5, 2021 22:11
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I'm old enough to remember seeing as a kid all the devices, converters and whatnot, in JC Whitney for 6V and positive-ground cars. That's where I learned they existed, and asked my dad about them. This would have been the mid-to-late '70s, when none of them were still being made, but were still relatively common. What? Of course I read JC Whitney for fun as a kid. I'm a gearhead. And dad was (is,) too, which is why they were around in the first place.
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Feb 5, 2021 22:45
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Darchangel posted:I'm old enough to remember seeing as a kid all the devices, converters and whatnot, in JC Whitney for 6V and positive-ground cars. That's where I learned they existed, and asked my dad about them. This would have been the mid-to-late '70s, when none of them were still being made, but were still relatively common. JC Whitney catalogs were the best.   
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Feb 5, 2021 22:48
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That and Harbor freight were great things to look at in study hall and dream about pimping out our rides. drat I can get a welder for that? I could make my own headache rack and put these nice KC Hi Lites on it. Siiiick
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Feb 5, 2021 22:53
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Donut Media absolutely is a horrible failure, agreed
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Feb 5, 2021 23:03
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tl;dw: The people who had those cars would be imprisoned for defaulting on their debts. They instead fled the country and couldn’t take the cars with them.
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Feb 5, 2021 23:05
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Darchangel posted:
Yeah, they had like every replacement panel for C3 vettes. I had dreams of fabricating one and stuffing in a 1,000 watt equalizer. I can't imagine how lovely those had to be. 
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Feb 6, 2021 00:04
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C-Bangin' it 
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What was really amazing was aaaaaaalllllll the stuff available for VW Bugs.
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Feb 6, 2021 00:25
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Platystemon posted:tl;dw: The people who had those cars would be imprisoned for defaulting on their debts. They instead fled the country and couldn’t take the cars with them. Thank you for your service. Did he say how you could go about buying one, preferably for pennies on the dollar? Because that pink G-Wagen at the start (that's as far as I got) looked pretty 
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Feb 6, 2021 01:33
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StormDrain posted:You'll have to dumb it down for me kemosabe. Not that this stuff was original equipment on the sort of cars that have positive common, but things like LEDs care about polarity and generally assume that common is negative. Radios and such may also assume that the chassis is negative. It's nothing you can't make work, but you do need to know what you're working with. E: I see the question was answered, excellent.
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Feb 6, 2021 01:42
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Memento posted:Did he say how you could go about buying one, preferably for pennies on the dollar? Because that pink G-Wagen at the start (that's as far as I got) looked pretty  at "pennies on the dollar". It appears that they're slightly discounted against what they'd be worth if they hadn't been abandoned in the desert with the keys in them, but they're Not Cheap.
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Feb 6, 2021 01:54
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I imagine there are substantial storage and other “fees” attached to claiming one of those, let alone exporting it.
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Feb 6, 2021 02:02
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I have refurbished some positive ground tube radios. I've spent my whole life assuming the chassis was ground and referencing all my readings to that, it's a real mindfuck working on positive ground electronics.
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Feb 6, 2021 03:17
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big dong wanter posted:Maybe it's my burnout car background speaking but I would throw every clutch fan into the sea on anything even remotely performancey. You gain a fair few horses swapping to electric and they defs move enough air to keep some fairly hairy cars cool. 100% depends on the car. Every C2 and C3 Corvette that ever had an electric fan had overheating problems and either got parked as a trailer queen or went back to OE style.
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Feb 6, 2021 05:01
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Bring back flex fans imo
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Feb 6, 2021 08:59
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Toyota had the right idea in the 90's, the hydraulic fan.
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Feb 6, 2021 10:17
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Majere posted:Toyota had the right idea in the 90's, the hydraulic fan. My 90's Toyota's radiator fan has it's own little tiny radiator to cool the "radiator fan fluid" (ATF). The reason (on my car) for the hydraulic fan circuit was that the engine was designed for a different vehicle, and the viscous fan would not fit under the hood if left in the original position, so the hydraulic pump/motor combo was used solely to relocate the fan. It also has an ECU-controlled bypass solenoid, so it can be turned "on/off" as desired. It's not all terrible. Just hilarious. I'm not sure if it's more efficient than an electric fan powered from the alternator or not. I doubt it. Pomp and Circumcized fucked around with this message at 14:08 on Feb 6, 2021 |
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Feb 6, 2021 14:05
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Electro mechanical trumps hydraulic in almost every instance
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Feb 6, 2021 19:17
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slidebite posted:Electro mechanical trumps hydraulic in almost every instance Yeah but how many electric fans are talking points for car guys who are checking out under your hood?
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Feb 6, 2021 19:34
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Does it T off the power steering pump or have its own?
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Feb 6, 2021 20:07
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Pomp and Circumcized posted:Yeah but how many electric fans are talking points for car guys who are checking out under your hood? You would probably be surprised.
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Feb 6, 2021 20:19
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slidebite posted:Electro mechanical trumps hydraulic in almost every instance Yeah they win out bigly.
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Feb 6, 2021 20:28
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wesleywillis posted:Yeah they win out bigly. Glad that you read it the same as I did.
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Feb 6, 2021 20:38
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kastein posted:Those really don't move as much air as people think, it's usually a downgrade from the factory fan clutch honestly, despite the marketing to the contrary. I've never had an issue, on everything from racing camaros and Ford pickups with 460s to little cars with 1.5 litres of displacement in the hot hot desert. Having a properly big radiator from Be Cool or someone helps tho.
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Feb 7, 2021 06:56
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Big Taint posted:Does it T off the power steering pump or have its own? Mine was PS pump driven. The sales pitch for electric fans was never that they cooled better than a mechanical one, only that they eliminate the parasitic load of the fan spinning (little as that may be) without the clutch engaged and the inertial load of the hub (hey, they're pretty heavy in some applications). Also, you can run a touch less shroud clearance for a more efficient fan since you don't have motor mount slop to contend with but that's splitting hairs.
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Feb 7, 2021 07:31
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CAT INTERCEPTOR posted:Donut Media absolutely is a horrible failure, agreed oh yeah I did not like that dude, but I just like the topic of abandoned super cars lol.
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Feb 7, 2021 07:39
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LifeSunDeath posted:oh yeah I did not like that dude, but I just like the topic of abandoned super cars lol. Its literally a repost of the videos and work of others. Did 0 legwork and got to shill trashy earbuds.
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Feb 7, 2021 09:35
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Rigged Death Trap posted:Its literally a repost of the videos and work of others. Did 0 legwork and got to shill trashy earbuds. Yeah it really sucked.
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Feb 7, 2021 11:40
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Big Taint posted:Does it T off the power steering pump or have its own? Mine has it's own pump, reservoir, and cooler. Essentially it's another power steering loop.
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Feb 7, 2021 15:37
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StormDrain posted:Glad that you read it the same as I did. mechanical trumps / hydraulic bidens
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Feb 7, 2021 17:03
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