WEBVTT

00:00:00.199 --> 00:00:09.480
this is the VF 390 a 390 mm fan that is

00:00:05.560 --> 00:00:12.040
by far the scariest thing we have ever

00:00:09.480 --> 00:00:19.520
attached to a computer it is made entirely out of carbon fiber it spins at

00:00:15.599 --> 00:00:23.800
a whopping 10,000 RPM blowing wind out

00:00:19.520 --> 00:00:26.160
the back at 450 km an hour and guzzles a

00:00:23.800 --> 00:00:30.880
potentially lethal 250

00:00:27.800 --> 00:00:33.559
Amps do you remember our last highest

00:00:30.880 --> 00:00:40.120
airfow PC the one that literally blew the top off our computer case those two

00:00:36.399 --> 00:00:43.840
fans combined were 2 horsepower the VF

00:00:40.120 --> 00:00:43.840
390 is

00:00:44.680 --> 00:00:52.160
60 I don't know how long I'm going to be alive so before I go I'd like to tell

00:00:49.840 --> 00:00:56.559
you about our sponsor go to resolve the Legends are true simple easy to use yet

00:00:54.359 --> 00:01:00.280
effective It software does exist Humanity saved go to resolves remote

00:00:58.640 --> 00:01:05.119
monitoring and management capabil is allow agents to protect and secure

00:01:02.359 --> 00:01:10.200
important it assets checko go to resolve at the link below go to their link here

00:01:07.600 --> 00:01:16.400
come with me this is our problem see that Transformer back there even if we

00:01:12.680 --> 00:01:19.040
took the entire power allocation of this

00:01:16.400 --> 00:01:24.799
industrial unit and powered the fan with it it wouldn't be enough to do it

00:01:21.360 --> 00:01:27.159
legally and even if it could What Mortal

00:01:24.799 --> 00:01:31.680
power outlet and cord could carry that kind of current for context a standard

00:01:29.680 --> 00:01:38.920
nor North American Outlet will do just south of 2,000 Watts our torac can pull

00:01:35.600 --> 00:01:43.439
up to 4.8 th000 Watts out of the outlet

00:01:38.920 --> 00:01:47.560
behind it this fan calls for nearly 10

00:01:43.439 --> 00:01:49.799
times that 45,000 Watts which left us

00:01:47.560 --> 00:01:54.840
with only a couple of potential options for powering it option number the first

00:01:52.240 --> 00:02:00.399
was to build a Frankenstein battery out of 18650 cells we've actually done that

00:01:57.759 --> 00:02:04.119
on this channel before but Frank neither Kyle nor Alex trusted me

00:02:02.479 --> 00:02:08.000
building a come on with a lithium battery with the

00:02:06.200 --> 00:02:13.400
240 cells okay that would have been a pretty

00:02:10.720 --> 00:02:17.959
bad idea a second option for powering the fan was to buy the battery from a

00:02:15.920 --> 00:02:23.519
Chevy Volt it's a little on the high side at 360 volt but because of how GM

00:02:21.160 --> 00:02:27.080
manufactured it having the voltage to something that would be usable for our

00:02:24.800 --> 00:02:31.720
fan is actually relatively simple the problem with that solution is that for

00:02:28.640 --> 00:02:34.440
one a volt battery is darn expensive and

00:02:31.720 --> 00:02:39.680
for two once we fiddled with the pack charging it could be difficult and or

00:02:37.400 --> 00:02:45.440
dangerous given the short timeline for this video then we decided to go the

00:02:41.440 --> 00:02:45.440
simplest route and spend

00:02:45.920 --> 00:02:51.720
$2500 on high current LiPO batteries but

00:02:49.680 --> 00:02:55.440
we won't be using them all at once instead we're going to be doing this

00:02:53.319 --> 00:03:02.519
this is flamable isn't it oh good we've wired up six of our battery packs Each

00:02:59.400 --> 00:03:05.680
of which is four cells in series making

00:03:02.519 --> 00:03:07.760
a total of 24s that gets us up to the

00:03:05.680 --> 00:03:12.640
voltage that we need and given that these are high performance 130c packs

00:03:10.560 --> 00:03:18.840
theoretically they could handle up to what 700 amps but we need about 250

00:03:16.480 --> 00:03:23.280
meaning this should be perfect as long as we don't want to run it very long you

00:03:20.640 --> 00:03:27.560
see we haven't run any packs in parallel which means that Full Tilt we're going

00:03:24.680 --> 00:03:32.519
to be looking at about 6 minutes of runtime even if we account for our

00:03:29.840 --> 00:03:36.360
Reserve packs here that gives us 12 minutes of runtime meaning we better get

00:03:34.200 --> 00:03:40.159
this right on the first try before we just connected it to the battery though

00:03:38.280 --> 00:03:44.439
Alex and Kyle over here needed to make sure that it worked the plan so we

00:03:42.200 --> 00:03:49.280
hopefully don't blow up something if something's not working correctly is to

00:03:46.360 --> 00:03:54.799
use this power supply and a boost converter so that we can have 48 volts

00:03:52.040 --> 00:04:00.519
coming out of this into our fan and we'll have current limits right on here

00:03:57.400 --> 00:04:03.879
so that if something's incorrect nothing

00:04:00.519 --> 00:04:06.519
goes super bad this is the ESC for any

00:04:03.879 --> 00:04:12.920
of you that don't know what an ESC is it takes DC generally from a battery and

00:04:10.280 --> 00:04:17.000
converts it to three-phase AC which is plugged into an induction motor of some

00:04:14.879 --> 00:04:23.199
kind so if this right here gets to about 80 85° or so we're going to have to cut

00:04:21.160 --> 00:04:27.840
the fan turn her down a bit so notice that it's a capon taped

00:04:26.960 --> 00:04:33.160
for isolation it's uh about capacitors all

00:04:31.240 --> 00:04:36.560
the actual business end is underneath here that's where all the fets will be

00:04:35.000 --> 00:04:40.960
uh that do all the switching to get your three-phase out um and then there's your

00:04:39.000 --> 00:04:44.560
control your logic board one thing we have to be careful of with this is the

00:04:43.039 --> 00:04:49.000
inrush current so you don't want to just connect all of your batteries to this at

00:04:46.520 --> 00:04:54.199
once because these will briefly act as a ShortCircuit ah yes but they thought of

00:04:52.000 --> 00:04:58.840
that may I introduce you to Mr spark lead so inside here this lead is a

00:04:56.880 --> 00:05:03.039
resistor when there's a resistance between this lead and the that lead if

00:05:00.560 --> 00:05:08.120
you attach these two points together it will slowly charge the capacitors

00:05:05.800 --> 00:05:11.720
instead of charging them really quickly so all that we're doing now is plugging

00:05:10.039 --> 00:05:17.319
it in plugging it in making sure nothing explodes you plug the hot side

00:05:14.240 --> 00:05:20.840
in okay

00:05:17.319 --> 00:05:25.199
Co then you plug this

00:05:20.840 --> 00:05:27.680
in no spark you plug that in okay now we

00:05:25.199 --> 00:05:32.919
smell for Magic Smoke the easy way to test now if it's actually getting power

00:05:30.160 --> 00:05:40.759
is to probe the pwm lead or you can probe this lead here BS yeah is power oh

00:05:38.360 --> 00:05:45.720
there is a pwm signal oh yes you can see it ha yeah this is a very good

00:05:44.000 --> 00:05:50.600
explanation of what pulse width modulation is you have a period which is

00:05:48.199 --> 00:05:54.960
the frequency at which this is switching and I think this is 50 HZ which is what

00:05:52.880 --> 00:06:00.919
comes out of a standard RC and what you're changing is the amount of time

00:05:57.360 --> 00:06:03.319
that the signal is on right so if this

00:06:00.919 --> 00:06:07.960
is when it's off and that's when it's on so right now I have the channel which is

00:06:06.199 --> 00:06:14.639
this little potentiometer set all the way to zero so fan is no no no going

00:06:11.440 --> 00:06:16.919
right now I am going to slowly rotate

00:06:14.639 --> 00:06:22.960
this potentiometer and you will see how that line reacts to it that small

00:06:19.160 --> 00:06:26.240
distance between there and there is the

00:06:22.960 --> 00:06:28.160
difference between that fan not moving

00:06:26.240 --> 00:06:31.720
and then blowing the computer away we're going to bolt this Frame to the buing

00:06:29.880 --> 00:06:36.039
table so we don't send both of them into the

00:06:33.319 --> 00:06:39.840
stratosphere oh hello hello

00:06:46.680 --> 00:06:51.560
sir oh goodness yeah

00:06:51.720 --> 00:06:55.880
like that's 10%

00:06:58.120 --> 00:07:06.120
power I think I'm might need almost need new underwear from LT store.com it works

00:07:03.440 --> 00:07:12.680
we didn't blow anything up that actually went way better than I thought it did so

00:07:09.599 --> 00:07:15.240
Alex I know lonus is going to want it

00:07:12.680 --> 00:07:20.759
but every fiber of my bean does not want to hand him the remote yeah that will be

00:07:18.879 --> 00:07:26.160
dangerous oh no I want to do the throttle no not no I want to do the

00:07:23.879 --> 00:07:29.919
throttle what we have tested before is running this off of a single boost

00:07:27.840 --> 00:07:32.840
converter and it worked well enough and that was great cuz we wanted the current

00:07:31.400 --> 00:07:38.360
limits and stuff in case something tried to blow up yeah now I've put two of them

00:07:35.400 --> 00:07:43.639
in parallel so we can hopefully get about 60 amps out of it something like

00:07:41.479 --> 00:07:48.000
that sick so we can play with this for a bit and not drain our batteries oh okay

00:07:46.039 --> 00:07:52.280
but maybe these will explode we'll see okay so can you power it on okay and I

00:07:50.560 --> 00:07:56.319
should be holding this down right outut is the output on uh yes they're coming

00:07:54.319 --> 00:08:01.440
from the big boy so I'm connecting the heart okay hand me the spark Le yep

00:08:02.280 --> 00:08:07.879
whoa it makes a sound when you power it on it'll make six sounds just give me a

00:08:06.680 --> 00:08:11.840
sec just give it a second I know you like to send it but okay I I will be

00:08:10.280 --> 00:08:14.879
gentle I'll be gentle so it's not the trigger it's not the trigger it's the

00:08:13.639 --> 00:08:18.400
pot over there just because the trigger's too way too sensitive so

00:08:16.800 --> 00:08:24.199
you're going to turn that pot and it's going to automatically just kick on at 40% the amount of concern I'm seeing

00:08:22.120 --> 00:08:29.639
from you one who is normally kind of Reckless actually really makes me worry

00:08:26.720 --> 00:08:32.520
about because you have the remote oh there you go

00:08:34.880 --> 00:08:39.880
now oh a little bit more it it doesn't

00:08:37.959 --> 00:08:45.200
sound quite right there we go there you go oo that's much better wow it's

00:08:43.080 --> 00:08:52.440
actually surprisingly quiet we're drawing 8 amps at what voltage at 48

00:08:47.640 --> 00:08:57.399
volts at 48 volts so that's four that's

00:08:52.440 --> 00:08:59.920
wait this is 2% power yep what the hell

00:08:57.399 --> 00:09:08.399
is going on here gentlemen wait how many amps can we do at 100 volts we can do up

00:09:03.360 --> 00:09:12.800
to 250 amps at 100 volts what yeah what

00:09:08.399 --> 00:09:15.800
this is this is not that much this is

00:09:12.800 --> 00:09:18.279
unbelievable what the actual heck is

00:09:15.800 --> 00:09:29.399
going on here okay so hold on how many watts is this uh 24 * 12 amp so like so

00:09:22.440 --> 00:09:32.320
this is 250 Watts this thing will do 45

00:09:29.399 --> 00:09:39.839
,000 wats what's the difference between this and a jet turbine uh do you do you

00:09:35.880 --> 00:09:41.760
know how much thrust this has no 60 kg

00:09:39.839 --> 00:09:47.279
so if you had a person that weighed 60 kg they could ride it yeah dear God in

00:09:44.920 --> 00:09:50.040
heaven do you understand do you understand what's going to happen to the

00:09:48.320 --> 00:09:55.160
computer that we put here all right okay let's get the duct

00:09:52.560 --> 00:10:00.640
tape this is carbon fiber reinforced pet G which I'm pretty sure is going to be

00:09:57.320 --> 00:10:04.000
fine workers comp wants to know your

00:10:00.640 --> 00:10:05.839
do not try this at home actually though

00:10:04.000 --> 00:10:10.160
like seriously I'm not too worried about people trying this at home this is an

00:10:07.880 --> 00:10:15.480
8,000 yeah yeah so let me get this straight this is the adapter from the

00:10:12.839 --> 00:10:19.279
arshole of the fan as Kyle calls it how do we to the computer yeah how how is

00:10:17.640 --> 00:10:24.959
this supposed to work just just just relax trust me basically the concern is

00:10:22.920 --> 00:10:29.880
that with that amount of air flow going through here not only can we not have

00:10:28.000 --> 00:10:33.800
any fans in its way because they're going to over Spin and blow out the

00:10:31.560 --> 00:10:40.560
headers on the motherboard it may actually like lift things away from each

00:10:37.360 --> 00:10:43.760
other like to put it in context

00:10:40.560 --> 00:10:46.600
450 km an hour that's what double the

00:10:43.760 --> 00:10:51.480
speed of a category 5 hurricane yes yes yeah there's going to be a double

00:10:48.920 --> 00:10:55.839
hurricane inside this computer where's the H you're duct taping the Shroud to

00:10:53.480 --> 00:11:00.720
the fan du better idea that's not going to do Jack you guys this is a duct it's

00:10:58.720 --> 00:11:04.639
called duct tape the force of the computer pushing against it with the

00:11:02.399 --> 00:11:10.440
cross brace is going to hold it in place does the cross brace come

00:11:07.880 --> 00:11:14.680
up cuz it's just going to blow it off that's what the tie downs are for it's

00:11:11.959 --> 00:11:20.800
going to tie it down we have thought about this where's the

00:11:17.360 --> 00:11:24.360
hammer we've settled on a core I9 11900

00:11:20.800 --> 00:11:27.320
K and this is an RTX

00:11:24.360 --> 00:11:34.160
270 I sincerely hope they survive don't worry it's not

00:11:30.399 --> 00:11:35.920
good catch new guy dang that was very

00:11:34.160 --> 00:11:40.839
close to shattering earlier than we expected I really think that we should

00:11:37.800 --> 00:11:41.880
french rally car all of the glass panels

00:11:40.839 --> 00:11:46.680
I don't know what the freak that means does that mean they normally tape up their headlights so if they shatter the

00:11:44.839 --> 00:11:50.600
glass doesn't go everywhere you know people often walk up to me and say oh

00:11:49.079 --> 00:11:56.639
it's so cool to meet you I'm your biggest fan now that will never be true

00:11:53.880 --> 00:12:02.560
ever again because this is my biggest fan

00:11:59.480 --> 00:12:02.560
um I forget how these

00:12:02.720 --> 00:12:13.160
work seems pretty stable

00:12:06.360 --> 00:12:17.440
right easy okay cool um hit me

00:12:13.160 --> 00:12:20.079
with okay she's on okay she's on okay

00:12:17.440 --> 00:12:26.079
let's do it torture test yeah torture test small fft there we go there we go

00:12:23.800 --> 00:12:31.160
okay okay GPU okay CPU temps are immediately 100 we need to do something

00:12:27.800 --> 00:12:31.160
here we ready yep

00:12:32.399 --> 00:12:41.040
we go okay so we're still at 100° though oh

00:12:37.519 --> 00:12:43.680
98 our main issue then is basically just

00:12:41.040 --> 00:12:48.000
that we don't really have fans directly on our heat sink the biggest problem is

00:12:46.199 --> 00:12:54.480
you have too much back pressure into the fan it's not liking it oh really yeah we

00:12:52.120 --> 00:13:00.850
don't have enough throughput need more power yeah I think

00:12:56.399 --> 00:13:04.039
we need more power so I turn it off now

00:13:05.240 --> 00:13:10.639
yeah that was 2% power right okay I'm

00:13:08.279 --> 00:13:14.639
just about to hand you the remote for the full perc power nice we're going to

00:13:12.760 --> 00:13:19.880
put a current clamp on here you cannot go over 100 because 100 amps is all that

00:13:18.079 --> 00:13:25.040
we can measure wait are we not going to talk about the fact that that door is

00:13:21.800 --> 00:13:26.440
open uh and that garage door is open

00:13:25.040 --> 00:13:30.000
because we are going to be generating enough air flow through this room that

00:13:28.279 --> 00:13:34.880
that's a legitimate concerned we bent the doors when we had the doors closed

00:13:32.760 --> 00:13:39.639
yeah we had the we blew out there we blew the air out of that door and these

00:13:36.920 --> 00:13:46.560
ones right here went and we like oh let's not do that y okay we ready okay

00:13:42.680 --> 00:13:49.959
that's 5 amps 5 amps yeah and we can do

00:13:46.560 --> 00:13:53.800
20x this

00:13:49.959 --> 00:13:56.320
yes okay that's 7 amps we're already

00:13:53.800 --> 00:14:04.759
down not thermal throttling anymore let's try to get to 10

00:14:00.600 --> 00:14:08.320
wow she's real touchy okay we're at 96°

00:14:04.759 --> 00:14:12.000
temps are going down you guys want to go

00:14:08.320 --> 00:14:12.000
to 20 ABS

00:14:16.160 --> 00:14:24.399
sure wo it's cooling that's for sure okay 30

00:14:27.040 --> 00:14:34.800
amps wow

00:14:30.440 --> 00:14:34.800
she goes boys

00:14:35.279 --> 00:14:41.079
40 50 wa look at the cables

00:14:48.240 --> 00:14:51.240
go

00:14:52.160 --> 00:14:59.199
70 how are temp

00:14:55.199 --> 00:14:59.199
Alex ADM

00:15:02.839 --> 00:15:14.600
our CBL have lifted off W this is unreal at the

00:15:11.600 --> 00:15:14.600
100x

00:15:15.000 --> 00:15:22.959
how cut it cut it how hot are the batteries they're

00:15:20.360 --> 00:15:29.720
fine 40 43 it was drawing 300 W an air cooler

00:15:25.920 --> 00:15:32.800
and it was only hitting 94°

00:15:29.720 --> 00:15:35.519
okay round two without the

00:15:32.800 --> 00:15:44.360
computer okay woo and legistics was so concerned about

00:15:39.399 --> 00:15:46.480
the CPU so can I pitch a crazy idea yes

00:15:44.360 --> 00:15:52.360
can we put the battery pack here in the flow of the air in the path of the airf

00:15:48.959 --> 00:15:54.199
flow rather 100 amps then that was like

00:15:52.360 --> 00:15:59.310
a third power bit above that not about that what

00:15:57.480 --> 00:16:02.420
the hell

00:16:03.839 --> 00:16:12.800
okay what are we at that's 10 amps and without the comp

00:16:08.639 --> 00:16:14.880
wow without the computer in the way she

00:16:12.800 --> 00:16:21.639
goes wa this kind of shows you how fans can

00:16:18.279 --> 00:16:24.079
be optimized for either airf flow or

00:16:21.639 --> 00:16:30.800
static pressure this is clearly all about that airf flow no treble okay now

00:16:27.680 --> 00:16:35.519
here's something I want to know

00:16:30.800 --> 00:16:37.920
oh you guys lying I can feel it 100%

00:16:35.519 --> 00:16:43.399
coming through here can you see my hair moving hold on I'm going to give it a

00:16:39.880 --> 00:16:45.360
little more this is at the back

00:16:43.399 --> 00:16:49.880
door W

00:16:46.880 --> 00:16:49.880
okay

00:16:53.720 --> 00:16:58.360
on that's only 60m

00:17:01.399 --> 00:17:09.160
wow I have never seen anything like it

00:17:06.360 --> 00:17:14.919
how high did we get 60 yeah that's a fifth of full power okay we going again

00:17:12.760 --> 00:17:19.919
you guys want to go full boore I've been informed that when we're

00:17:17.400 --> 00:17:25.160
running at full boore I am not allowed to stand behind it something something

00:17:22.079 --> 00:17:27.839
keyman claw something liability anyway

00:17:25.160 --> 00:17:33.200
the point is I'm going to put this wig on my mop head here and see if I can

00:17:31.200 --> 00:17:38.880
even hold it in place I mean that's basically Linus

00:17:39.320 --> 00:17:51.489
right 10 o 20 30 that's a 100

00:18:10.760 --> 00:18:13.760
what

00:18:16.799 --> 00:18:20.120
wow all

00:18:23.360 --> 00:18:31.360
doorway W wo it's all smoking get

00:18:27.559 --> 00:18:33.919
out like take the whole thing you can't

00:18:31.360 --> 00:18:40.159
um smell through the camera but I assure you it smells a lot don't do what we do

00:18:37.240 --> 00:18:44.240
yeah please don't if you guys enjoyed this video you might enjoy the one where

00:18:41.840 --> 00:18:48.559
Alex and I used a different fan to cool a computer and it blew the top off or

00:18:46.520 --> 00:18:53.159
you might enjoy the one where Colin and I tried to uh make a battery out of

00:18:50.520 --> 00:18:58.320
18650 cells that one also involved fire and that door and disposing of batteries