70kwh lifepo4 envision project part 2
9:50
14 сағат бұрын
Food
5:39
2 ай бұрын
air show
0:09
5 ай бұрын
Mr Jingles
1:06
10 ай бұрын
2879 biasing part 2 plus osculation
19:03
2879 bias circuit part 1 of 2
8:37
Bias 2879 observations
15:58
10 ай бұрын
Cancer .....
9:40
11 ай бұрын
2879 transistor biasing questions
8:21
Stryker 955 v1 average watts issue?
11:43
sb-220 test bench update
8:32
11 ай бұрын
sb-220 all the power update
7:49
11 ай бұрын
tuned coax 2.0
7:37
Жыл бұрын
Sb-220 low on power? or not
24:47
Жыл бұрын
seeds
2:05
Жыл бұрын
low bridge
0:34
Жыл бұрын
what is that?
0:40
Жыл бұрын
sb-220 first fire up
9:38
Жыл бұрын
Пікірлер
@AveRage_Joe
@AveRage_Joe 2 күн бұрын
Nice!! Reminds me of the Solar version I had. I didnt have the heat exchanger on the furnace tho, thats a nice addition.
@electromechanicalstuff2602
@electromechanicalstuff2602 2 күн бұрын
@@AveRage_Joe i remember watching that video some years ago
@speedyz28
@speedyz28 2 күн бұрын
Im about to bite the bullet and order 16 of them. At 70 bucks a cell its about the cheapest ive come across.
@ChipMIK
@ChipMIK 3 күн бұрын
I made a 43 kWh EVE 280lf pack made 2 years ago with 0 compression. 220A charge/discharge utilized for hours on a daily basis with no sign of bloating during the period.
@electromechanicalstuff2602
@electromechanicalstuff2602 3 күн бұрын
@@ChipMIK that's pretty good. Yeah I don't think it's necessary at all either. Except to just give peace of mind about my terminals not getting stressed. Off grid garage had to add space between his cells because of swelling. Not bloating. The normal charge discharge swelling
@ChipMIK
@ChipMIK 3 күн бұрын
@@electromechanicalstuff2602 Sorry, that's me not writing in native language. No bloating OR swelling here, cells looks just like they did on arrival and had absolutely 0 issues with it. (16S 3P). Do take in mind to have a good balancer as LFP cells fight to become unbalanced. I charge mine to 56V once a week and keep them up there until Vdiff has been below 2 mV for 2 minutes. Do NOT try to balance below approx. 3,45 - 3,5V ass all you will get is the balancer moving randomly around with capacity and this will completely mess up the balancing. I can recommend "Neey 4A" (4th edition or newer edition if any). Fantastic active balancer and if you got Home Assist you can control it from there through an ESP32 so you dont have to use an app on the phone or be near it to connect to it. When doing the setup you must be sure the cells in series cant touch each other as its only the film around them that makes the ground isolation. This means two batteries connected with busbars where the outer metal of them touch = short circuit.
@motominis
@motominis 4 күн бұрын
Thanks for sharing this. I have been thinking about buying some. I didn't realize they were two years old. Tested well though.
@electromechanicalstuff2602
@electromechanicalstuff2602 4 күн бұрын
@@motominis ya usually by the time u order them from China directly u may often get them almost a year old. Plus these are already in the states. Only took a week to show up. Great buy IMO
@leftright4450
@leftright4450 6 күн бұрын
First Comment. I have also bought 280A cells and received yesterday. One thing i noticed they came completely falt out of the box but as i charge them they were little bit bloated. So i have added compression
@electromechanicalstuff2602
@electromechanicalstuff2602 5 күн бұрын
From where? They do swell when they charge. It's normal. The only time compression actually helps anything is the absolute very first charge. Off grid garage talks about this in great depth. Look up off grid garage compression he has a few videos. He's been running his for 4 years without compression. The only thing is he had to add more space between cells to not tug on terminals.
@electromechanicalstuff2602
@electromechanicalstuff2602 5 күн бұрын
@@leftright4450 his video is called why you should compress your lifepo4 and why it doesn't matter Off grid garage
@Mylotheblacknwhitecat
@Mylotheblacknwhitecat Ай бұрын
Did that scooter use to have a hub motor?
@electromechanicalstuff2602
@electromechanicalstuff2602 Ай бұрын
@@Mylotheblacknwhitecat no had I little 150 watt chain driven motor mounted underneath
@Mylotheblacknwhitecat
@Mylotheblacknwhitecat Ай бұрын
@electromechanicalstuff2602 ohh mine looks identical but has a hub motor lol I want to upgrade the motor possibly to a 1000w or a gas motor but not sure with that hub motor
@electromechanicalstuff2602
@electromechanicalstuff2602 29 күн бұрын
@Mylotheblacknwhitecat find a older style sprocket wheel
@Mylotheblacknwhitecat
@Mylotheblacknwhitecat 29 күн бұрын
@electromechanicalstuff2602 what kind I've been looking at a wheel that is from a e200 but it says don't fit
@electromechanicalstuff2602
@electromechanicalstuff2602 29 күн бұрын
@Mylotheblacknwhitecat e100?
@ericzerkle8486
@ericzerkle8486 Ай бұрын
If you drive the sb 220 with the 300 the 3 500 tubes won't last. They are made to handle a 100w ham radio. I swear cbers know NOTHING about practical electronics.
@electromechanicalstuff2602
@electromechanicalstuff2602 Ай бұрын
@@ericzerkle8486 brahahaha. Did u even watch the video? I use it on low, the 300 is missing one of its final tubes and my radio is turned down to 4 watts so when normal talking not yelling into the mic it makes like 125-150 watts PEP going into the sb-220. Plus who cares if they burn out. Buy more. They make new ones every day.
@ericzerkle8486
@ericzerkle8486 Ай бұрын
@electromechanicalstuff2602 You sound stupid, typical cber, MORE IS BETTER, LETS SPATTER THE BAND!
@jluke6861
@jluke6861 Ай бұрын
Thank you
@nashvilleoutlaw
@nashvilleoutlaw Ай бұрын
When making jumpers I just trim until X reaches 0 ( Z on my mini60) if you really want to get picky, I can scroll up and down to find the frequencies where it goes back up to 1. Then add the high and low frequencies together and devide it by 2 to get the true center. If you think about it for an antenna. If you set your antenna to the perfect length for the band. Then hook an untuned piece of coax to it. You have to lengthen or shorten most antennas to compensate for the mismatch. Seems like that would affect the antennas performance, radiation field pattern and takeoff angles.
@radioguy19510
@radioguy19510 Ай бұрын
kzbin.info/www/bejne/r6S7gXqIoqumoLc The truth with proof! This is a myth!
@floridanick
@floridanick 2 ай бұрын
So sick
@sirmister4411
@sirmister4411 2 ай бұрын
This is too funny Wow you really have no clue about rf just by the way you are testing this I’m glad your not an engineer for a radio station.
@electromechanicalstuff2602
@electromechanicalstuff2602 2 ай бұрын
@@sirmister4411 I'd never want that job.... It doesn't pay enough money. I have 1.01: 1 match on 5 different stations all with over 2,000 watts. So I'm doing something right. Have fun and remember if it says high voltage YOU should definitely give it a touch
@geoffmcwiggan2814
@geoffmcwiggan2814 2 ай бұрын
Well done Bubby….. Lmao 👍
@RobB_VK6ES
@RobB_VK6ES 2 ай бұрын
Every thing you did up to connecting the dummy to the end of the coax was a complete waste of time, but I am sure you had fun all the same. There are legitimate uses for tuned lengths of coax but a simple antenna feed line is not one of them assuming the antenna is close to 50 ohms. A half wave (or a multiple of) will show the impedance at the far end be it a short, open or anything in between. That is why your last test with dummy on end of coax read as 50 ohms (= dummy load 50 ohm). If you were to repeat the same test with any of your other cables the result will be the same. It is this special property of a half wave that is the seed of thought for the fallacy that the feed line needs to be a half wave or multiple. It does not. A quarter wave long coax if left open at one end will theoretically show short but will work perfectly if the end is terminated in 50 ohms. The VSWR on a feed line does not change with length. Bottom line forget all the BS surrounding feed line lengths. the correct length of feed line is just long enough to connect antenna to radio.
@electromechanicalstuff2602
@electromechanicalstuff2602 2 ай бұрын
@@RobB_VK6ES I did another video of exactly as u said. And had done it before this video without recording it. When I run cables not half wave the swr and impedance change
@electromechanicalstuff2602
@electromechanicalstuff2602 2 ай бұрын
@@RobB_VK6ES my last video showing what u said is called tuned coax 2.0. no T just dummy load on end of coax each time. I'd love to link it but they will remove comments with links. So look 10 months back in my videos
@eds5977
@eds5977 2 ай бұрын
I have the 803 nice
@deeper4cheaper128
@deeper4cheaper128 3 ай бұрын
How long have you been trans?
@electromechanicalstuff2602
@electromechanicalstuff2602 3 ай бұрын
@@deeper4cheaper128 u stalking my way old vids
@shotgun1666
@shotgun1666 3 ай бұрын
Are you still into cb radio stuff?
@electromechanicalstuff2602
@electromechanicalstuff2602 3 ай бұрын
@@shotgun1666 yes.
@brandonnonya3680
@brandonnonya3680 3 ай бұрын
Spend a little more and get yourself something reliable!
@brandonnonya3680
@brandonnonya3680 3 ай бұрын
I own Blackrocks
@sizemattersoffroad9103
@sizemattersoffroad9103 3 ай бұрын
Have you had any issues with that time delay relay, I am building a phase converter and want to do what you did with the contactors and time delay relay but see bad reviews for them as they aren’t intended for continuous power, that one is rated for 5A was wondering if that has worked for you so far?
@electromechanicalstuff2602
@electromechanicalstuff2602 3 ай бұрын
@@sizemattersoffroad9103 ya I've never had issues. Been running it for years. And I used a cheap eBay brand. Also sold several for friends. No issues I even accidentally left it on over the weekend once. No issues.
@sizemattersoffroad9103
@sizemattersoffroad9103 3 ай бұрын
@@electromechanicalstuff2602 okay awesome, another question I have is it looks like you used 2 resistors from one leg to the other on the contact for the start caps, why is that needed and what resistors did you use?
@electromechanicalstuff2602
@electromechanicalstuff2602 3 ай бұрын
@@sizemattersoffroad9103 it drains the start caps. They came with the caps when I bought em. Not really necessary. I'd have to check to see the value
@sizemattersoffroad9103
@sizemattersoffroad9103 3 ай бұрын
@@electromechanicalstuff2602 oh okay thank you, what size wire are you using going to the timer and from the timer to the capacitor? 14ga?
@electromechanicalstuff2602
@electromechanicalstuff2602 3 ай бұрын
@@sizemattersoffroad9103 timer only controls the coil on the contactor. It can be pretty small it takes less than a half amp to power to contactor coil. I may have used 14 or smaller. The contactor does all the heavy lifting to bring in and disconnect the caps from L1-L3 or L2-L3 sometimes it works better one way or the other but usually doesn't matter
@DannyRaySmith-m4i
@DannyRaySmith-m4i 4 ай бұрын
How much is it worth?
@electromechanicalstuff2602
@electromechanicalstuff2602 4 ай бұрын
@@DannyRaySmith-m4i Macon300 maybe $300 Sb220 $1,000 -$1500 condition
@fredbrauer5429
@fredbrauer5429 4 ай бұрын
Wouldn't cutting coax to zero without the dummy load do the same thing??
@electromechanicalstuff2602
@electromechanicalstuff2602 4 ай бұрын
@@fredbrauer5429 old video I have a few but essentially I believe that's what I did in this video is cut the coax with dummy attached at desired frequency till coax had no influence on the tune
@devaracoleman3642
@devaracoleman3642 4 ай бұрын
He’s a real 🤡 Out the Would work😂😂😂😂
@electromechanicalstuff2602
@electromechanicalstuff2602 4 ай бұрын
@@devaracoleman3642 is that English
@bradleyozbun1012
@bradleyozbun1012 5 ай бұрын
Wow 1st time seeing this at all. They do a great job not letting this out. I want a president that stands for the constitution of the United States of America. One that represents the people is the middle class . R.F.K. just might be the man for the job. 💯 I hope they don't get heir meet hooks into him .
@electromechanicalstuff2602
@electromechanicalstuff2602 5 ай бұрын
@@bradleyozbun1012 then u also need to take the bad with the good. He has said if Congress had a "majority" voted to ban modern sporting rifles he'd sign it.
@rodneydavis8110
@rodneydavis8110 5 ай бұрын
Also most of our old ham tube amps really strain at the upper frequencies, only pentode will have the lower interplate capacitance to work at the higher frequencies of HF
@rodneydavis8110
@rodneydavis8110 5 ай бұрын
I have one and this is normal, 100 watts in SSB 600 to 800 watts pep. Am 100 watts tuned properly 1000 watts out, the only way to get more out is to put more in 200 to 250 watts in will get max out but you will burn out tubes fast KY4ZD
@ozriblit
@ozriblit 5 ай бұрын
You mentioned that one of the pieces of coax has a velocity factor of 1. That can’t happen for anything other than free space. Coax cable. When you look at the specs for coax you will see a number for capacitance/unit length (ft or metres) and the same for inductance. These were what you were reading on both instruments. Also for coax, there are two well understood properties. If a coax is 1/2 λ at a given frequency, the termination at one end is repeated at the other. That is to say that an open will be seen as an open and a short as a short. If the coax is 1/4 λ at a given frequency, the termination at one end is reversed at the other. At the two extremes, an open will be seen as a short and vice versa. These repeat every even multiple for λ/2 and every odd multiple for λ/4. In addition, a coax less than λ/4 behaves as an inductor, over that as a capacitor. This repeats every λ/2. Your VNA has a smith chart. It will show the phase change as you sweep the frequency. Try the λ/4 piece with both an open and a short. You can also try the two short pieces to a T connector and the s11 and s21 ports on the VNA, and calibrate the through. Connect the other pieces of coax to the T and watch the effect when you vary the load. Try the dummy load and some resistors if you have any.
@ozriblit
@ozriblit 5 ай бұрын
The truest thing you said in this video was “I may be wrong”.
@electromechanicalstuff2602
@electromechanicalstuff2602 5 ай бұрын
Hahaha. But I'm not
@ozriblit
@ozriblit 5 ай бұрын
@@electromechanicalstuff2602 you can prove yourself wrong without cutting up any more coax by downloading a good simulator, simNEC comes to mind. Set up a length of 50 Ω coax with a 25 Ω load and a 50 Ω generator Z. Sweep the length between 0 and a bit over 0.5λ and, using the smith chart, see if the SWR changes.
@bharatkumarjoshi1596
@bharatkumarjoshi1596 5 ай бұрын
Diesel power dependable power
@danieldahlin1937
@danieldahlin1937 6 ай бұрын
Do I have to use a bms I have one battery pack Or can I just come off of the t and - to the solar controller
@electromechanicalstuff2602
@electromechanicalstuff2602 5 ай бұрын
100% u need a BMS lots and lots of brands JBD is the brand I'm using. Definitely need something to monitor individual cell voltages and shut down the battery from charging and discharging when maximum reached
@lukewinkler3284
@lukewinkler3284 6 ай бұрын
How much THD is on MEP 802 ?
@electromechanicalstuff2602
@electromechanicalstuff2602 6 ай бұрын
Less than 2%
@lukewinkler3284
@lukewinkler3284 6 ай бұрын
Awesome,thank you for the info😊
@radioguy19510
@radioguy19510 6 ай бұрын
Just use a jumper that conveniently goes from one piece of equipment to the next. The wavelength doesn't matter! This is all voodoo and wives tales!!!!!
@patriot3636
@patriot3636 6 ай бұрын
What length did your RG400 come out to? I got 50 feet of it and I'm interested, so I can use it in my car.
@travishorn1847
@travishorn1847 6 ай бұрын
Lay your coax out straight and see if there is any difference.
@electromechanicalstuff2602
@electromechanicalstuff2602 6 ай бұрын
When I did the initial trimming it was not coiled
@f-j-Services
@f-j-Services 7 ай бұрын
I figure that tiny bump/ripple in sign wave on up and down would be it firing, being a 4 stroke 2 cylinder you should see 2 bumps like what was shown. Very neat to see that.
@KC2SDJ
@KC2SDJ 7 ай бұрын
Did you read the manual on the antenna analyser? Do you know how to use a dummy load?
@electromechanicalstuff2602
@electromechanicalstuff2602 7 ай бұрын
Where's all your educational videos? Oh u don't have any cause your not here to help the community only be a troll and criticize it. Gotcha next
@KC2SDJ
@KC2SDJ 7 ай бұрын
@@electromechanicalstuff2602 kzbin.info/www/bejne/gZ-5hHl7bNCCh5Isi=3xDbhi6hpKLGo5K8
@KC2SDJ
@KC2SDJ 7 ай бұрын
thats not my video but it gets the point across
@KC2SDJ
@KC2SDJ 7 ай бұрын
Ive been attaching coax to antennas for years as a Ham radio operator and the only time coax was needed to be tuned was for repeater filters where receive and transmit on a single antenna happens simultaneously. Tuned feedlines only work at one specific frequency where they are tuned.
@KC2SDJ
@KC2SDJ 7 ай бұрын
When I say they only work what I meant to say is they are only Tuned at one frequency
@KC2SDJ
@KC2SDJ 7 ай бұрын
CB guys are nuts, read a good antenna book before you spend money on equipment you dont know how to use
@brianbelliveau5551
@brianbelliveau5551 7 ай бұрын
I’ve been thinking of getting one, how many KW is that generator?
@electromechanicalstuff2602
@electromechanicalstuff2602 7 ай бұрын
Mep-802 is 5kw rated 6kw actual Mep-893 is 10kw rated 12kw actual. Rated at high altitude to perform. So at sea level u get a but more plus 300% starting surge
@kylewilliams3306
@kylewilliams3306 7 ай бұрын
What plastic ammo box would 2 6.5 150w marine fit on the front for Bluetooth build ?
@DanaTartarini-fp2hn
@DanaTartarini-fp2hn 8 ай бұрын
🎉
@Owl350
@Owl350 8 ай бұрын
He's exactly right and the other two parties have been BRIBED by the same people ! If you don't vote for Kennedy vote for the Socialist Party or you're voting for FASCISM again !
@1883GotDown
@1883GotDown 8 ай бұрын
😊 very nice video bud from Gatekeeper!
@M0RMY
@M0RMY 8 ай бұрын
How does my multiband antenna work with a random amount of coax (the distance from the radio to the antenna) and perfect SWR on bands from 80m to 6m? This is crazy. Why don't you just tune the antenna correctly? You are using 27Mhz - just tune the antenna. The coax is 50 ohms, the radio is 50 ohms - so make the antenna the correct size to correspond (PS it will never be perfect).
@DXCommanderHQ
@DXCommanderHQ 8 ай бұрын
Totally agree Tom!
@electromechanicalstuff2602
@electromechanicalstuff2602 8 ай бұрын
My antenna is perfect 1.1 at the antenna. Your multi band antenna. Is it random bands or is it specifically designed to be bands that are resonant with one another. So in two other videos of mine you watch me change nothing but the length of coax it doesn't even have an antenna it has a perfect match dummy load..... And yet the SWR, capacitance and reactance all changes depending on different lengths. Now let me ask u this. Do you or do you not own an antenna tuner? Regardless of it being external or built into the radio. It does what? It adds either inductance or capacitance to the antenna circuit to make it land on 50ohms right? Ok. Now. If you have a tube amplifier does it or does it not have an input tuning network along with an output tuning network? All my old ones do. Why? If the input tune of the amp represents the load/ antenna as far as your radio is concerned y not just have it at a set tune that is not adjustable? Everyone is going to be using 50 ohm coax between the radio and amp right. So y make it adjustable? It's so u can get the lowest SWR at your radio right? How about the output tuning network. Tune and load right? What is that doing? It's tuning the antenna network for the band you're on right? So yes when I'm running my tube amplifiers it really doesn't matter what length my coax is because the amp has input and output tuning networks to make it as close to 50 ohms as possible. Now come on over tho the CB world of transistor amplifiers..... Almost none of them have adjustable input and output tuning networks. So u can do one of two things. Open the amp and physically modify the input and output tune to match whatever random coax you are using from radio to amp and amp to antenna or the builder of the transistor amp makes every amp tuned for a null coax. I've done both. I build both transistor and tube amps for myself only. I have even added air variable capacitors to my base station transistor amps. But in mobile situations they won't survive and will get out of tune too often. So we build for null coax because that's the only thing I can make consistent. If you plug in an antenna analyzer and tune your antenna for the lowest possible SWR and it's still too high install a null coax to get it to 1.1 or better. When u install the transistor amp that is tuned for that 1.1 match it will be happy and have absolutely no reflect. DX commander I love your stuff. I'm very new to this hobby and you're a pro. I just think that sometimes we get stuck in our ways of it's always worked for me so therefore u must be wrong and it just takes a new set of eyes to ask questions and investigate issues that many people are having but many people just ignore. Yes 1.5 is good enough. But I have always been able to tune my network to 1.1 or better while pushing more power than I care to admit to. The lower the SWR the better your reception will be. That is usually more of a factor for me than loosing a few watts In reflect.
@mahokhan9122
@mahokhan9122 8 ай бұрын
UN's Mr RFK Jr's USA's Love You Jesus Son 👽/ YESHUA Sa ❤️ Very wonderful Love You USA's UNITED STATES's of America's 💞💜💚 ISA son 👽 UN's WORLD UNO 💘 Islam 💗
@mahokhan9122
@mahokhan9122 8 ай бұрын
MAHO MAHO MAREEKH ء
@nightvision327
@nightvision327 8 ай бұрын
YOUR A/C COMPRESSOR IS RUNNING BUT BY THE LOOKS OF THAT COIL NOT FOR LONG!!! YOU FITTIN TO BE HOT THIS SUMMER!!!
@electromechanicalstuff2602
@electromechanicalstuff2602 8 ай бұрын
As a licensed refrigeration technician who works on 500 ton units and smaller. That coil is not that bad at all. I wash em off several times a year. That r410 unit was 2 or 3 years old at the time of this video and it is now 10+ years old and still running strong. I've since sold that house made $150k on the flip to a Friend. now living on some property in the country that has two r22 units that are about 16 years old and run great also and i have two brand new 30lb bottles of r22 i got for free 5 years ago. I'm not worried at all. Plus don't write everything in capitals. It means you're yelling.
@GreenWitch1
@GreenWitch1 8 ай бұрын
We support RFKJ! #Kennedy24❤
@AndrewSparkfish
@AndrewSparkfish 8 ай бұрын
Any idea on the wind speed!
@electromechanicalstuff2602
@electromechanicalstuff2602 8 ай бұрын
I've had 60+ mph storms and it was ok. But we had either a micro tornado or straight line winds come through that finally took it down but it was strong enough to pull several shingles off my room and all the shingles on my neighbor's roof. It broke at the threads on the last pipe at the top.
@gregrobinson1304
@gregrobinson1304 8 ай бұрын
Please pray for this man
@jessicalindsey2616
@jessicalindsey2616 8 ай бұрын
That is why we need Kennedy for president! Vote RFK jr 2024!!!