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Also, why not just wire in a rheostat?

Does anybody know if it makes sense to take a 220 to 110 step down transformer to take 110v and step it down to 55 volts? In other words, if you fed 110v into a 220v step down transformer (a copper coil one in particular), would you get 55v out - and not create some other problem/hazard.

In your efficiency calculation you did not include electrical costs for pump. If your draw down is double with the diaphragm tank (for example) the pump would be activated half the time. This is an important consideration when determining total cost of ownership, not to mention wear and tear on the pump.

I went through the stages of grief because of this box cutter then finally my persistence worked 🤣

Interesting going to try this or something like it. Thank you so much.

What about leaving it on a stick with max stretch for few days instead of ironing?

Thanks alot..very helpful

I've only made it to #7 and your #7 and #8 reasons to not buy are exactly why you should buy a CSV. Every pump manufacturer will tell you that their pumps are designed to run 24/7 and you will get the best life out of pump the longer it runs because the starting and stopping action is what ruins a pump. Yes running a pump longer does use more power it's just not as much as you think and probably pennies a day at best. When a pump see's high pressure it actually reduces amp draw, so the pump isn't actually running at say the full 1/2hp, it's effective hp is now say 1/4hp which will draw less power. You should learn more about electric motors before making comments about them. Now a CSV isn't for every circumstance. They are designed for people who have irrigation systems or use a high amount of water with a much to small pressure tank.

Excellent job well done 😊

thank you

Thanks for the info. I've been trying to slow down antique electric fans that were designed to run on closer to 100 V instead of the 110 - 120 of today's lines. They do make transformers to run Japanese appliances (100V) on North American voltage and it works great for my 1916 12" GE but they are large and expensive. I am currently trying to slow down a tiny 6" GE from the 1920s and I'm looking for a simple, small and cost effective way to do so. I'll have to see if I can incorporate this method. I am curious why your house runs on 220V when you sound like an american and have american style plugs and outlets? I would expect 220V only for your oven and dryer.

It worked! I had an old soft PVC tubing from an oxygen tank to use for the extra piping. I was able to actually stick the valve inside the hair conditioner tube which was bigger than the PVC tubing. The rather expensive bottle of conditioner will last me a bit longer now!

Do CSV worK? Can they be used on a diaphragm style residential pressure booster?

I’m a girl and having an issue with some shorts that have a similar elastic band and this worked perfect!

i did it... and it's magical... speed drops not to half ...but a lot more, no sound at all

Stainless steel isn't galvanized.

In the solution #4, would it work better if the flow switch was between the pump and the PT, rather than after the PT .? Thought is that, the tank could handle a few hand washes or toilet flushes ( say if tank was say 20 gal)

Us: Engineer needed for BIG project. Salary 200k. Engineer” Wow I’m ready what is it a bridge, 200 story building, particle detector? Us: Have you ever heard of men’s underwear?

Nice video but there is one major con not discussed here for the bladder/diaphragm tanks: the rubber. Your water is in constant contact with this rubber. Yes it’s food grade and blabla but nothing beats stainless steal. Also, in most cases those bladder/diaphragm tanks are used in RO systems, where the water is going to be slightly acidic as a result of the RO process, which doesn’t go well rubber as you can imagine. This is also why most bladder/diaphragm tanks are usually followed by a carbon filter, because the rubber tastes awful. I personally don’t want rubber in my water.

I would never irrigate my property and run my home WITHOUT a cycle stop valve.

I love this. The grill I have doesn't have a bottom anymore. Rusted out!😮

Thanks! I didn't get frustrated, I just did a Google search "how to change the blade in a Ingco box cutter" and this was the first video to pop-up. So you helped me change the blade on the first try. :) Really great video! Thanks again.

Does this reduce the running watts??

grabbed one of those 5A red models from amazon, $50 one because vevor suck (no pun intended) and wont deliver the $30 one here. it worked like a charm 🙏🏼 your a godsend. i have an 18" on the wall and if my ear pointed that way the hum was horrendous, if i turned it was bareable. im kind of sensitive to these noises, they keep me in a high state of stress for some reason. but now its gone . just the fluttering of the fan blades at 90v, no burning smells so far (😂 ive had some bad speed regulators) even the metal frame has stopped vibrating. 👍 ty so much. wonderful man. i would have gone the bulb route but with the price of sockets and finding bulbs that will work these days i went with the red chunk. i need another for my extractor but they are pricey. (#vevor 🗡️👀)

I moved into my current home about 3 1/2 years ago- the home is about 22 years old and has a Wel-Flo diaphragm tank. I’m guessing it’s the original tank. I’m at the point of not a matter of if ,but when it will need replacement. I live in the boondocks so I may just order one and have it handy for when the older one fails. Good info- Thx👍

Just commenting mid video that trying to stop a fan is not the same restricting flow. Placing the fan in a box would be the correct experiment and would decrease power draw

That's like watching a safari in Africa where they shoot aluminum elephants

Curious I have a 300 gallon stainless steel tank available I don't mind doing maintenance and I have the room. Boss man recommends a 36 gallon bladder tank that is $350. I am replacing a bladder tank that as you said you don't know it has a problem until you start noticing the rust and it rusted through a hole which then you see the water quality you've been drinking. What do you recommend I have 5 Acres and do you get concerned during storms when there is power loss is it better to have the larger tank

I tried it out and it works fine. One question though, does this use more electricity? I mean will there be more electricity consumption in this way since it's powering two bulbs apart from the fan?

Interesting

Great explanation! Finally someone who thinks like the way I can relate to... Thank You so much!🎉

thanks larry!

do you need check valves for option #4?

Thanks for making this video. It was really enlightening.

Thanks a lot. The best explanation ever.

Thank you. Perfect explanation

What about the thin little elastic in a woman’s pair of underpants. Will it work or destroy?

Really interesting, I've been into fans and air purifiers for years I was not familiar with this method. It particularly of interest because I find in the majority of cases one is trying to do what you are create a good quality silent low speed. That still moves enough air. So the variable transformers while they are the gold standard are very heavy and expensive but most of the time it's only the quiet setting one wants. Great video thanks

One of the very best video i have watched up till now.. Now at least i can hv a good nite sleep Regards from 🇵🇰

Hi Larry, what if you have 2 pumps, one from 0 to 40 and one from 30 to 80 psi

I'd actually be willing to shell out $100 for a regulator because I need to have a floor fan pointed my direction for health reasons (advancing peripheral neuropathy that makes it really hard for my skin to tell temperature and I end up feeling constantly too hot when I shouldn't). My previous box fan was tolerable but the motor finally burned out and the new fan is notably louder and pushes air too hard even on the lowest setting. I can see this being an ongoing problem because I hate online returns and I know any fan will burn its motor out at some point anyways. So thanks for the recommendation, now I'm lost reading Amazon reviews and wondering how to pick a regulator that won't burn out in two months or catch fire. x.x

Why they don't make them slower to begin with?

You need to talk to a REAL water well person. The bladder and or diaphragm tanks that the average person can buy, the bladder and diaphragm are NOT replaceable. These tanks cost between $500 to $600 and need REPLACING every four to five years because the bladder or diaphragm breaks and can NOT be replaced. That is an average cost of around $120/per year on just for the tank. My father replaced his old, compressed air tank with a bladder tank and has regretted it ever since. Even this guy talking, said at the 4:38 minute mark that he has a stainless-steel Pressure tank, the one shown. Not a bladder or diaphragm pressure tank. Why is this? Because he does not want to be spending $500 to $600 every four to five years for a new tank. Besides his explanation is totally wrong. The bladder and diaphragm presser tanks do increase in pressure as water enters the tank, just like non-bladder/diaphragm tanks. The reason for a bladder pressure tank: 1) The tank can be made out of cheaper materials basic painted steel (which RUST if left outside. 2) If the bladder or diaphragm is in good shape (not broken) the tank does not get waterlogged, which a tank without a bladder or diaphragm can get. Waterlogged is when the tank completely fills with water and there is no air left in the tank to supply pressure. This means that the owner needs to ither 1) full drain the tank about once a year. or 2) install an air valve on to the tank so that air can be put back into the tank. I was doing option #1 for a while before I install the air valve. Now I just turn off the pump, open one of the outside water faucets and using my air compressor add air to the tank. Takes a few minutes and it is done.

@19:32 That's an incomplete explanation. The wheels drive the propeller, and yes the propeller pushes the vehicle forward. The missing bit, is from where do the wheels take energy to drive the propeller? Energy comes from the vehicle, pulling it back and and slowing it down. The wheel can't just drive the propeller with applying an opposite force on the vehicle. The "complicated" physics comes into play when you have to show that the push forward is greater than the pull back. And the engineering challenges is to make the push forward greater than the pull back + attrition.

Larry please fix the sound on this video, otherwise it is quite informative!

Nice

This is a perfect primer. Such exquisite information density

same here... looking for this kinda video!

The professor was right. If he was wrong then the vehicle should keep traveling when no wind is present after an initial push. There should be a chart where at wind speed of 1 mph the cart moves at 2.7 mph, at 2 mph the cart moves at 5.4mph and so on. But this chart will never be made because it brakes the 1st law of thermal dynamics. As for the treadmill test is ludacris!if anything it is simulating a head wind. this should be able to chart on a graph as well. What do you think will happen when the treadmill goes at a walking speed? The answer is nothing will happen. To really test it they should take the most optimal small scale modle that they have created, make a wind tunnel the length of a football field where every bit of air in the tunnel flows exactly the same speed (as close as possible), have multiple readings take place throughout the tunnel to get average wind speed and then set the unit down and see if it can beat the average wind speed th get to then end. But it can't and won't. It would be cheaper to build this than that large unit but they can fudge the numbers with the large unit how fast should it go at 1mph, 2mph, 3mph. There should be a graph charting this. Wind tunnel and unit on a track is the best way to test. Keep it small like the treadmill units. Have steady wind speed. But this won't happen because it would ruin the theory. If it runs faster than the wind @ a wind speed then it should be able to run faster than the wind at 0 mph. Let me explain: If it's the wheels powering the propeller which pushes the vehicle faster than the wind then after starting the unit with a push the wheels should be able to power the propeller and push it at the same rate as when it has wind. A vehicle moving at 11 mph with a 10 mph tailwind is moving upwind at 1mph. The wind in perspective to the vehicle is now a head wind. A vehicle traveling 1 mph in no wind has a 1mph head wind. It's the same thing. Get the vehicle started with a push and it should beable to power itself. I don't think I'm missing anything but if I am please explain just rewatched the blackbird professor bet video. @12:05 the claim is made "the propeller thrust force is greater than the drag on the wheels". If this statement is true we can expect the unit to produce greater thrust force in a no wind test. Just get the vehicle started with a push and then the propeller will overpower the drag that wheels produce Im not into all the math equations but just coming from a practical standpoint imo the black bird is a hoax

Thank you. I did throw my first one in the bin and then bought another but had the same problem.