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  • How to Install Load Resistors for LED Turn Signal Lights

    You're trying to find reasons to argue and specifically attack my knowledge and experience.I never stated jet fuel or hydraulic fluid were corrosive to wires, I simply used the 2 most obvious fluids to demonstrate that aircraft are not operating in some sterile environment, which you seem to think they are.Aircraft are not even relative to the conversation, you're the one that brought them into the conversation in an attempt to disqualify my 4 decades of experience as an engineer, I only brought them up in reply to your comments.I made 2 statements about corrosion, 1 was that aircraft are subjected to corrosive fluid and 2 was about galvanic corrosion.Machines are not restricted to the soldering techniques that people are, there are a lot of options for mass production soldering that's ve…

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    You're trying to find reasons to argue and specifically attack my knowledge and experience.I never stated jet fuel or hydraulic fluid were corrosive to wires, I simply used the 2 most obvious fluids to demonstrate that aircraft are not operating in some sterile environment, which you seem to think they are.Aircraft are not even relative to the conversation, you're the one that brought them into the conversation in an attempt to disqualify my 4 decades of experience as an engineer, I only brought them up in reply to your comments.I made 2 statements about corrosion, 1 was that aircraft are subjected to corrosive fluid and 2 was about galvanic corrosion.Machines are not restricted to the soldering techniques that people are, there are a lot of options for mass production soldering that's very fast.I did fail to mention previously, most crimp connectors have built in stress relief features. Even cheap connectors are made out of copper, though I'm sure there are some companies making them out of other materials.If soldering was safer or more reliable than crimping, that is what government safety regulations would mandate, but they don't.Solder fails during catastrophic events, creating more risk. It only takes ~360° to melt solder, any fire would do that, almost any short will reach that temp. You can reach that temp with less than 5W of power, a 10A fuse on a 12V system won't fail until it hits 120W.

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  • How to Install Load Resistors for LED Turn Signal Lights

    A lot of your points are valid, but some are only partially true.Yes, aircraft do experience vastly different environments, but those environments are far more harsh than road travel, including exposure to chemicals and environmental extremes. Not too many road bound vehicles are subjected to jet fuel or hydraulic fluid most days they operate, while operating at extreme pressure and temp variations within minutes.Aircraft range from low altitude single seat prop planes, to passenger jets, to super sonic high altitude recon planes to cargo helicopters to attack helicopter to transport. They all have the same types of connections, as do all production vehicles. Even trains and ships crimp instead of solder. If you've never been in a Chinook, you have no idea the amount of chemicals those th…

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    A lot of your points are valid, but some are only partially true.Yes, aircraft do experience vastly different environments, but those environments are far more harsh than road travel, including exposure to chemicals and environmental extremes. Not too many road bound vehicles are subjected to jet fuel or hydraulic fluid most days they operate, while operating at extreme pressure and temp variations within minutes.Aircraft range from low altitude single seat prop planes, to passenger jets, to super sonic high altitude recon planes to cargo helicopters to attack helicopter to transport. They all have the same types of connections, as do all production vehicles. Even trains and ships crimp instead of solder. If you've never been in a Chinook, you have no idea the amount of chemicals those things spray all over everything, and every military helicopter will vibrate teeth loose.Aircraft components are usually in their own bay, but those bays aren't sealed. I've pulled gyroscopes out of every type of aircraft I worked on that would be covered in some type of corrosive solution.The only industry I know of that chooses solder over crimping is the space industry, but those are far different circumstances than anyone else would experience.Crimping IS quick and cheap, for someone doing a specific connection once. Manufacturers have robots that do the crimping, those robots could just as easily solder, and soldering would be much cheaper and just as fast. Solder is far cheaper than crimp connectors. On some connections, they probably wouldn't even use solder, probably just a tack weld, like they do to other parts of carsA ratcheting crimp tool is easy to find, you can get a Klein for $25A proper crimp joint will create a homogeneous piece of copper, there won't be any air gaps in it. Soldering fills in the gaps between copper with tin and lead (or tin and silver), creating a bond of dissimilar metals and an area ripe for galvanic corrosion, which is nearly impossible to avoid on the outside of a vehicle, it's difficult to avoid inside a sealed compartment.You seem to be too busy feeling like you're being personally attacked and trying to justify doing things your way, you're not willing to see people are simply trying to offer more information.Understand, I have a Master's Degree in Electronics Engineering, and specialized in avionics. Just because I choose to specialize in a certain field doesn't mean I don't still know all of the other things I learned. You seem to think that you're common opinion on soldering wires is superior to my ~40 years worth of training and experience

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  • How to Install Load Resistors for LED Turn Signal Lights

    This has been a painful read, I'm not going to get in to the resistor argument here.What I will say is that you should avoid soldering wires on vehicles, proper crimping is the appropriate way to make connections (using a decent crimp tool) on a vehicle.Look at any factory wiring harness, on any form of transportation, they are crimped. Aircraft are forbidden to ever have soldered connections, and are inspected for them.Crimping isn't done because it's faster and easier (it is). It's done, because metal fatigue causes soldered joints and wires to regularly fail in vehiclesI'm a retired avionics engineer dealing specifically with military aircraft, it was my job to make sure my aircraft electronics systems wouldn't fail

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  • Solderless Electrical Connector

    I did see where these were used before wire nuts were common, I know that even the smallest ground rod bolts would be much larger than what you were talking about, but they are the closest I thing I could think of

    A lot of people are acting like this is being used as a permanent thing when it was clearly stated that it's temporary. Copper versions of these are used by utilities for permanent connections where electrical codes allow them or mandate them.The version I'm thinking of is called a ground rod clamp, though a split bolt is interchangeable. I used the clamps when I worked for a utility company. I use clamps and split bolts interchangeably bolts for radio tower connections.

    He made it clear, more than once, that this was for a temporary connection, and clarified it later that he is using it for continutiy testing

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  • Simple Way to Secure Bikes in a Truck Bed

    I think this is a great solution for a lot of people. A lot of trucks now have much shorter beds than they used to and this makes it easier and safer to transport them for most people.The straps are convenient and my preference for tie downs, but rope would be just as effective, not everyone has straps.On some bikes, when they are placed upside down without a seat, the seat tube will touch before the tire, those bikes should keep the seat installed.I would think side to side movement would be more important to control than front to back motion with this setup and would use the straps to control for that.

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  • RUST!!! Removal. Using Electrolysis.

    It should be mentioned to not use stainless steel as the anode (the sacrificial metal). The chromium in it pollutes the solution with hexavalent chromium, which is extremely toxic and illegal to dump anywhere, it has to be brought to a toxic waste disposal site. If the solution turns yellow, it's because of hex chromium.You can clean stainless steel with electrolysis, hex chromium is a result of the oxidation of the anode, the cathode is safe.Stainless is usually chosen because it lasts much longer than other metals. I use carbon rods, I've been using the same rods for years and they are still in near new condition.

    I bought carbon gouging electrodes from McMaster-Carr

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  • Using baking soda (a base) will work for diluting alkaline batteries (which can be effective), an acid will neutralize it, clear it much faster and will be more effective (baking soda would work better than an acid on something like a typical car battery). In this instructable, vinegar or lemon juice would work better.An important thing though, when using an acid, like vinegar or lemon juice, on electrical components, you must neutralize the acid with a base, like baking soda, and completely rinse it out, or it will begin corroding the contacts.An acid or base is effective for cleaning any type of battery corrosion, one will work better than the other depending on the battery chemistry (Coke clears up car battery terminals great, even though both are acid).

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  • In actual use, lithium batteries usually don't last more than a few years in a mobile application. The extreme temps they're exposed to drastically shorten their lifespan and also puts them at higher risk of thermal runaway. Lithium batteries also require a different charging solution than lead acidAlso, deep cycle batteries are designed for 80% depth of discharge. It's true that the less you discharge them, the longer they'll last but they can still easily go over 10 years with heavy use. The only way I would recommend current lithium tech over lead acid is if weight were a significant concern and the batteries were rarely exposed to high temps.

    Good write up, I would recommend mentioning that you used stranded wire and not solid core wiring. Stranded should always be used in a mobile application.

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  • This will help the fan last much longer too, especially with drywall dust.

    I noticed that's how it was worded also, but the photo shows negative pressure being used (the fan is blowing out)

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  • Animal waste is a significant health risk, commonly containing many types of diseases and multiple types of worms humans can get. It also pollutes the watersheds with water runoff.Many areas have laws requiring animal waste to be disposed of properly and will fine you significant amounts if you don't do it. Where I live, in rural Tarrant County (Ft Worth area), the first offense is a $500 fine and a pet education class that you have to attend and pay for. My HOA has additional fines.

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  • NightFire commented on wannabemadsci's instructable Rainbow Blaster

    NiceDid you try other ways to get the powder out? I'm thinking something like a venturi effect, the way an airbrush or sandblaster usually work. Possibly routing the air to the bottom of the bottle to blow the powder out may help reduce the amount of shaking between puffs.

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  • I use moist paper towel to soften it up.After years of brown sugar bricks, I finally bought an air tight container to store it, I haven't had an issue since.

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  • This is a great instructable. I do have a couple of concerns with it.First is the gauge of wire for the amount of power is too small. You have a 500W inverter in there, that alone has the potential to pull significant power even while working within it's specifications.The other is that I didn't notice any spacing between individual cells, for their expansion and contraction, which happens with all lithium cells, especially as they get warm.

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  • Rat Fink is what really makes it pop

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  • Is there a need for suspension? None of my tractors have suspension and I've never seen a tractor with suspension, though I've never dealt with commercial agriculture equipment.

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  • NightFire commented on kilo_me's instructable DIY spray paint

    That's a Presta valve, they come with the nut, they are found on higher quality bicycles. Schrader valves are the type you find on cars and the types of bikes you would find at WalMart.Presta valves require a different air chuck than Schrader valves.

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