Відео

Possibly, but the guy who designed and sold me the gantry kit told me to weld it, so I did.

I agree, but I have never had a problem with the software limits maintaining the position. I think they are becoming less important, buy a backup system never hurts.

Yes I did!

If it works, awesome!

@@rebelengineering Where there's a will there's a way! 👍😉

Thanks!

The plug in hybrids make a bit more sense. The batteries can be small and often have enough battery for most daily tasks. With the engine you don't get stranded. It is a more practice application. It is better than those people throwing gas generators in the trunk of their Tesla.

@@rebelengineering ya i remember everyone in ukraine having to do that for a few months. the more damaging in town driving is all handled by the battery so the only miles that go on the generator are highway, which i think are something like 1/5th-1/10th as bad as in town driving. the motor in turn protects the battery by not allowing it to over discharge or be discharged in the cold. you get much better use of the battery in cold climate because you dont have to use resistive heating.... its basically close to 100% efficient in terms of the generator acting as a heater. and because they dont super charge you dont have to worry about buying one 2nd hand that has been super charged into the ground by some busy uber driver. idk it seems like the smartest idea to make due with 1/5th the battery. i just think gm realized they made a car that will never break down. that and they didnt have enough assembly lines to make the Bolt on. no real transmission to worry about either. just some planetary gears on the 1st gen. i think the 2nd gen used a CVT type belt which is not so good reading gm forums

I think that is a great explanation. I had a longer explanation, but being this is intended to be more of an into overview, I tried to come up with something that could be understood while being accurate enough to get the point across. I think I cover the oxygen in one of my comments or one of my other videos.

Do you have some examples?

They look promising in recycling. Hopefully they can make an impact. I have never said lithium can't be recycled, only that we are only recycling 5% as of now.

@@rebelengineering I think you're missing the DIY solar off. Good guys that are using all of the crashed car batteries for powerwalls. I personally have processed more than 250 kWh of Chevy. Volt batteries that are built into powerwalls. I think you're five percent numbers It's pretty far off. Redwood materials is gonna spend another three point five billion dollars on a factory to use the recycled battery materials. They say they can't even get up to twenty percent of speed because they don't have enough batteries.

@@terrya6486 I am very happy about the available salvaged batteries, but I am more concerned about the end of life batteries that are not being recycled. If you have data that the recycling is higher, I would love to see it. I would like to use some of theses batteries for my RV and home myself. It is on the to do list. We will see how their recycling facility comes along. I have seen so many speculative projects that don't pan out. I hope this one pleasantly surprises me.

@@rebelengineering Well , the guy that started redwood materials is the original engineer for all of tesla's batteries. So I believe the guy is gonna make a serious venture out of recycling batteries.

That would basically be using oxygen as the plasma gas which is sometimes used for cutting thicker steel.

Thanks. Many more to come.

Thanks for watching. I'll have to come up with some more unique projects.

This was my first engineering video. I have slowed down a bit and dropped yhe music a bit in later videos. I will look at is more going forward. Thanks

I will have to look into it. Upon first look, it is a solar charging car. This technology has never really taken off in the past because of a max output of 300W per square meter on solar panels does not provide a lot of charging to the car. If you live somewhere like phoenix with lots of sun and a short commute, you may not have to charge your car. However, I live in Arizona and even here, the solar panels don't put out a lot in the winter. Plus, to make panels work well in the winter, you need to angle them at the sun. A car can't do this. I would expect most people interested in this car to live in cities where the car is typically kept in a garage or parking garage. That said, I put solar panels on all my equipment that does not get used daily. For lead acid batteries, that little boost keeps them lasting a lot longer. However, this is to maintain the charge, not charge up a dead battery. I think it is a cool science experiment, but I doubt it will be highly impactful to the auto industry.

People like you will be key to making EVs a reality. Keep up the awesome work!

Your point would have some validity if we were recycling the batteries. The problem is we are not. Our oil is not unlimited, but to get it we stick a straw in the ground and suck it up. For batteries we are strip mining a more limited resources. At this rate, we will run out of lithium, graphite, cobalt, and manganese to make batteries way before we run out of oil. Also, a lot of oil, coal and gas go into making and charging EVs. Trying to change this will take even more oil, coal and gas. There is no free lunch here.

Do you have anything to support his? Lead acid is easily recycled because you just dump out the acid and melt down the lead. Li-Ion requires separating the lithium, graphite, cobalt, and manganese. This not an easy or inexpensive task. There are plenty of old lithium batteries available to make a large recycling industry. Am I missing something here?

​@@rebelengineering . Well, "you're missing" the statements from JB Straubel (Tesla founder, now Redwood Materials) with reference to " Yield of recycled materials from Lithium ion cells reaching over 95% and those materials being both "1/6th (17%) the cost of newly mined stock" and "of better quality". Logical, since they are "double refined" . (I could recount the reference he made to circuit boards from other devices also being added to the process, etc)

@@rogerstarkey5390 As soon as the industry adopts the recycling, my tone will change. Showing we can do it is great. Actually doing it is what counts.

If it coudl be the second vehicle, this is still a huge market. Not many people drive over 100 miles per day on a regular basis.

oh man, you need to correct the data points you were taught, because they were lies. CO2 isn't a problem. In fact, the last ice age, that we are still coming out of, had CO2 levels plummet so badly that over 1/3 of the plant species went extinct. Until the past couple of decades, we were still so low that many more were about to get extinct. All through the history of the planet, as proven by the fossil records so it is NOT conjecture, the CO2 level was several THOUSAND times what it is today. Funny how looking at history continues to prove the current politicized "science" wrong with ease. However, you buying into it because someone told you it was so, instead of looking into it for yourself is a you problem.

Ha - guess I need something to make it harder to make a deep fake of myself.

I could make this much more technical and much longer, but I wanted to be understandable to the average viewer. What is the point of making a very technical video that no one watches.

I think some fleets of delivery vehicles would be good for keeping the technology alive and pushing development, but mass adoption... I can't support that yet. I see the Tesla "sports cars" as a cool novelty that is also pushing the tech, so in some ways that is good, but they are having to make their own mines just for their production. That is with a 4.2% Market share in the US. I think we will be resource limited at 10% with current technology.

@ngineering You are 100% right, and I am NOT a "hater" of Evs or any technology regarding those vehicles. I see it like you do-- it is a cool technology that has some limitations as far as certain aspects of them. Thanks for the reply, brother- you are a very impressive young man.....

Yes, that is fine for you, but we still have the issue that we don't have enough materials available for mass adoption and until we start recycling the batteries we are just accelerating this shortage. I am not against you owning your Tesla, but I am against mandating the sales of electric cars because it is just accelerating this problem. On top of that, it is just not possible on a large scale with current technology. We have been fighting this battery issue for over 100 years and I don't see any revolutionary fix coming soon. Gradual improves will not make this possible on the time scale that is being pushed.

Less fuss than pumping gas, what a disingenuous clown you are 😂😂😂

"We don't have enough materials available" .... Because we weren't LOOKING for them. Now, we are (or at least the smart countries) Lithium? Plenty . Nickel? plenty, and new materials coming. . Cobalt? <Sigh> actually a byproduct of other mining (copper, Nickel, etc...) AND being phased out in many cells. . Iron? Really? . Plenty of new chemistries which will supplement in *other use cases* (storage, etc. For example , that's where Sodium will be useful). . I will say you even got the "not until we recycle" comment wrong. Think about it. If we build let's say 1 million vehicles in a year. 2 million the next year. 3 million the next. In the 10th year *SOME* packs start coming back for recycling..... About 10% of the FIRST YEAR production... Maybe 100,000. . But we're building 10 million packs that year. Recycling will provide 1% of requirement that year. . "AHA!" you say.... "So what's the point??" . Well, the EV cell recycling opportunity has made *General* recycling viable. . The various processes developed can take *ALL* similar cells. That's literally BILLIONS of cells that normally go to landfill ...(so much for the other argument).... from Phones, laptops, tablets, power tools, power supplies, "personal care devices" sex toys(😉) etc. . Just throw them into the shredder and they are "raw material". . PLUS, If you can be bothered to investigate Redwood Materials, you'll find a reference to "recycling Printed Circuit Boards", Logical if you think about it, since they contain contain, Copper, Aluminium , Iron, Tin, Nickel, Gold, Silver, Lead(!) Cadmium(!!) (Note: Lead and Cadmium are present in sufficient quantity to result in classification of the ground up material as "Hazardous Waste"! A fact I wasn't aware of until I just checked... So thanks for helping to reinforce my hypothesis!). . Anyway, back to the main topic.. . You state "We have been fighting this battery issue for 100 years..." In fact, we haven't. The latest technologies, chemistries have emerged over the last *50* years. (Early research in the 1970s, the "famous" one, John Goodenough in 1980, Akira Yoshino, Sony, 1985) With application to High power systems coming in the last 20. . What's coming now? Well... You should REALLY search "100 year lithium cell' You should find references to late stage research by Jeff Dahn and the team at Dalhousie University (Canada) with data showing cells which actually *improve* as they age (cycle) and with no observable reduction in performance over extended, accelerated Test cycles. (If you don't know Jeff Dahn.... Think "Tesla Battery Guru"... Knows his S**t). . Then we have the Chinese (Ya'know, the ones who "copy" everyone else?) who not only have and control material supply, but numerous new chemistries and technologies coming very soon. . So, "revolutionary fixes" coming soon... Who implements those fixes, how many there will be, and exactly how soon? Difficult to say, BUT they will happen. . Do more research on "WHY 4680 cells" (Tesla, of course) . Short answer, it's not about "the cell" so much as "the SYSTEM". First principles thinking. . 1) Requirement: Lots of *Capacity* at low cost. . 2) How? Ideally, More GWH from a small, cheap, efficient factory. . 3) HOW?? a) get rid of "wet chemicals" (large plant, complicated, toxic) b) Fewer, larger cells, produced at a fast cell rate" = Exponential increase in *capacity* output. . THATS what is taking time (it's a combination of at least 4 processes never used before) But WHEN it happens.... 🚀🚀🚀 . At that point, what's the Limiting Factor? The production ramp of the vehicles. . Since Legacy ICE manufacturers were too slow to take on "small Tesla", they now CAN'T compete with "Huge Tesla" (and "those damned Chinese"). They're in the "Kodak Moment Death Spiral" phase. . How many EVs will sell? . As many as the new companies can build factories for. . Will Legacy Auto survive? . Every EV sold is one ICE not sold, and EVs (the good ones) ARE selling . It's happening. The question isn't "If?" but "When?"

And Just think of all the people who Work in Low income. The Cleaning Lady, the facility Manager, the MC Donalds worker etc etc etc. They all need an affordable Car for under 2000 bucks and that'll never happen with EVs... Who will Change the battery on your Tesla when it is 15 years old?!

@@rebelengineering We didn't have the materials or infrastructure needed for automobiles when they were first introduced. Demand always leads supply and supply is unstoppable when demand is present. The fact that you can already buy and use an electric car at a reasonable price indicates that the technology is already there. I agree that there should not be subsidies but there is also a matter of public health regarding exhaust fumes.

As the data changes, so will my thoughts.

I'm ignorant of any information on plasma cutting. Your statement, without rebuttal, is even more ignorant. Stay in the basement.

@@talltom1129 Oh, your mom's gonna' be pissed when she discovers that you got the whole household kicked off UA-cam.

Ha - true, but why use inches when you can use first convert it to corndogs. It is just so much more visually impactful.

Thanks. That's the goal. This rabbit hole goes DEEP!

That is true. I am not sure how that is going to be solved. It is not that EVs are inherently more flammable than ICE vehicles, it is that we can't put them out. There will be some good money in self extinguishing battery technology or at least an on board suppression system. The problem is that all the ingredients to sustain the fire are in the battery where you can put out a fuel powered vehicle by removing the oxygen.

​@@rebelengineering You forget the fact that by the time emerged services reach an ICE fire it's often "over" since the rate of combustion (AKA "energy density") of the fuel means that vehicle is "gone".

True, but they don't reignite days later. Once it is out it is out. When an EV lights it can be an issue for days. Not all ICE engines light the tank, but it is pretty easy to have a run away battery fire. Take safety out of the equation and you still have the freeway shut down much longer dealing with a battery fire you can't put out and a car you can't remove from the road until you do. @@rogerstarkey5390

The issue is we are not recycling the batteries we have. It is not that we do not have the batteries to recycle. Right now we have a lot more available combustible fuel than vital metals for EVs. Also, the amount of oil, coal and natural gas that goes into making and fueling EVs is not insignificant. Purely arguing on the reduction of fuel usage is not a good argument because the EV nay not be net positive in its life. We have a long wat to go. If by "fleet" you mean delivery vehicles, we are at least looking in the right direction.

@ngineering Not only are we recycling lithium batteries, but the efficiency of material recovery is 95%, which is more than most other materials, not only that, but the batteries made from recycled materials are just as good as from mined minerals. You might be an engineer, but you sure ain't a recycler if you don't know that. P.S.: I can link the studies, but won't here, youtube deletes every comment with a link nowadays.

@@seamon9732 I don't doubt the 95% recovery, but at a recycle rate of 5%, we are still 95% of 5% which is under 5%. Until it becomes profitable to do the recycling we have a problem.

It takes the early adopters to make it happen long term. However these need to be people who can accept the compromises or those who fit in the proper demographic. Tesla is trying to make sports cars, and that is fine, but their model is not a mass adoption model. I think small commuter cars with small batteries can easily replace a car in a 2 car household. I would really be cautious if it was my only car. I do think the technology will catch up, I just don't want to blow through all our resources before we figure it out.

While I agree with your comparisons we also have to look at how quickly we are mining our available resources. We can grow more trees and make more glass, but when we use up limited metal resources they aren't so easy to replace.

I think I am going to need a whole video to address all of this. Thanks for the detailed response. There is a lot of nuance here. I had to skip so much just to keep the video from being hours long.

@@rebelengineering "There is a lot of nuance here. I had to skip..." I get it. Make the videos longer and you loose the audience :) I also strongly agree on the rate of mining. We can't just go ham on that. Instant gratification is what got us here in the first place.

@@JGFXDKI am saving your comment and plan to cover a lot of it in a future video.

@@rebelengineering Good thing oil is not a limited resource... Oh wait. Well at least that oil plants and pipelines don't use a lot of metal.. oh crap. Oil tanker ships? Train cars? Tanker trucks? Hmm... Not so different

Tesla as a company is valued as if they are going to own the entire transportation industry. While they are at the top of the EV industry, I think their growth will be resource limited.

@@rebelengineering I agree that their growth may be limited to resources, but the fact that they are so diversified, is probably why they are so highly valued. They are not a car company, they are more of a technology company. Their "cars" are computers on wheels. They have so many current and future revenue streams, i.e. Tesla auto insurance, robo taxis, self driving, solar, battery storage, peaker plants, robots, and many other things.

@@RoadTripTravel When Tesla's PE ratio hit 1400, that was just insane. Now at we are more around 45 this a bit more justifiable. This is still sky high, but if they can pull off their endeavors, it might be a good investment. However, at this valuation, it still assumes a lot will go right.

Thanks. If it does, there will be many more to follow up.

The hate from all sides makes it interesting. I have seen all the good, the bad and the ugly.

I stopped watching after :08 😵😵

Agreed. The low cost of linear rails right now does make it appealing, but definitely not a necessity.

Linear rails and balls screws keep the cuts much cleaner and less chatter on the edges than belts that stretch and rebound. ........ My diy uses linear rails and 10mm belt and cuts OK. it's been totally acceptable for what I do with it.

@@toddmayta7615 10mm is a pretty small belt. I have a 15mm belt on my co2 laser cutter and it has a very light head.

@@rebelengineering agreed. It does seem to work pretty good but I just recently ordered a 15mm belt (2mm pitch) and 20 tooth drive pulleys from AliExpress for an upgrade. It just arrived yesterday. Should be interesting to see if it makes a difference....... (My current setup is 10mm belt, 10 tooth pulleys, with 5mm pitch.)

I like "experts" that criticize peoples' choices in the machine that they are building. There is no set rule for every option of running.