Second trip 1,400 Canadian pesos.
We're gonna put an Olympic barbell and load it up with some weights and show it
curl a couple hundred pounds.
Hey guys it's time to install the hydraulics and test the power loaders upper body,
but first I do have some bad news.
Due to the global pandemic we're all facing,
this may be the last power loader update for a little while as most of our
company is working from home and we won't be able to continue working on it.
The following video was shot shortly before Canada sent people home to help flatten the curve.
You can do your part to help flatten the curve as well by
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But I do have something you can do while you're staying at home.
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Now let's go test the power loader, but first we're gonna need to go
on a little shopping trip.
What's the problem Bogdan?
They don't have the big cylinder that we need.
What are we looking for 5? 008?
Isn't that big enough?
Yes, but it's got to be a third of that length.
What if they don't have them Bogdan?
4008.
5024! Uh oh.
4014.
316.
3508, 308! Yay they had one in stock!
So hard to carry with one hand.
My god look at this thing.
I've been making these!?
Literally exactly what I needed.
Two sixes?
We need even more two feets and more three feets.
Do we have enough fittings?
That's about half of what we actually need.
Do they sell that here?
Looks like we'll have to hit up another Princess Auto! To the next city!
4008? or 5008? or 3008? Our shopping cart.
Also look at this!
Second trip 1400 Canadian pesos.
There it is!
Juji if you can pick this up!?
Oh my gosh! The Grip Genie granted my grip wish and he'll grip yours too.
Thank you Grip Genie, Thank You Grip Genie!
If you believe!
We're going to need to upgrade our engine
That's going to be another ten grand, for a good engine.
We're finally done assembling the back and the shoulders of our Aliens power loader.
Which means the next steps are just to prime the hydraulic system and
to get the whole thing tested.
Here's our entire system for the hydraulics.
We'll start with the car batteries. Here we have three car batteries which are going
to supply the power for the entire system. We've got our motor, hydraulic
pump, and hydraulic reservoir here to actually flood the entire system with oil.
Our two T's that split the drain and the pressure across to the two valve
blocks here and here. The two bottom ones control the biceps cylinders for the
left and the right arm the two middle ones control our laterals and then the
two top ones will control our back muscles to allow the arms to pan in and out.
This is an antique switch box that someone donated it to us and we're gonna
be using it as a temporary,
way to control the power loader and to test all the arms and all the linkages.
Okay so basically my plan since there's two sides of it.
Is just to use one half of these for the left arm and 1/2 these for the right.
We've got eight winches on each currently we'll using six valves
per arm but what we can do is we can have one of these be for the back
panning in and out, one of these for the lateral, and one of these for the bicep.
They're just mirrored on the other side. Then the bottom row will be for
the wrist forward and back, the wrist rotation and then the gripper opening and close.
Even some of these switches like this we can use that to engage and
disengage the pump. Awesome. Lets get testing. Lets do it.
Okay so we've tested all the switches and we've gotten all the air out of the system.
We're ready to move on to the actual load testing but we should
probably check the make sure that our motor isn't too getting too hot because
it's kind of undersized for this application. Can you see how the motors getting?
You can see right here on the motor is the hottest point. Which all
things considered it isn't terrible for an electric motor but the nice thing
with using a thermal camera like this is you can see from a distance that there's
there's a bit of an issue there.
So a fun fact about these thermal imagers.
When I was back in school you could not get one of these things for less than like ten
thousand dollars. Which is incredible these have come down to just a few
hundred dollars now online. Which is super convenient for us because we can
actually make use of it when we're doing our engineering projects like this.
We've got basically the whole upper body done now right Bogdan? Which means we can
start testing it. I think one of the first tests should be let's see if we
can do the iconic Sigourney Weaver come at me!
When she attacks the alien for the first time.
One issue we have right now is because this isn't the finalized valve
bank or pump situation, hydraulics flow where there's least
resistance. As you can see sometimes one arm drops while the other lifts and
that's because all the flow is going into the easiest path of least resistance.
Which then drops the other arms so we actually have to kind of like
go like left and right to be able to almost get a smooth motion going.
We won't have that issue in the final design but that's after we've added a
whole bunch more hydraulic valves and possibly even multiple pumps.
Alright let's open her up! It just wants a hug!
Come on! Come on!
Come at me!
We're gonna put an Olympic barbell through these two holes and
load it up with some weights and show it curl a couple hundred pounds.
Let's go grab some weights.
Alright, lets grab all the 45's we have. I remember I at least got 4-45's because I was ambitious.
Some day I will be able to do 225 again.
Grab all the 35's
Alright let's start loading her up.
Alright so that's 275 pounds.
That's actually the same weight that my pneumatic base exo-skeleton uncurled like five years ago.
The the morale the story as we need more weight
There it goes.
There we go!
Right now this is 275 pounds and we're adding another 320.
Yeaaah look at that strength! Now pull ups Ian! Pull ups!
Woooh.
Same time.
Not bad.
Now a big thing to note. You might be thinking "It's so slow!"
That's because we're using a tiny 12 volt test hydraulic pump. This is in no way how
fast it'll be when we're done. The restricting factor right now is flow
rate so a tiny motor can't make that much flow with a hydraulic fluid which
means it's gonna move slowly. These cylinders and even the hoses are rated
for a flow well over 10 to 20 times as much as we're showing right now. So we'll
actually be able go *Pow Pow* No problem!
One of the nightmares of doing a complex
hydraulic system is hose management of which we have none right now.
As you can see some of these hoses are getting pretty bent which is a no-no for hydraulics.
We just wanted to see if the actual design works before we send
it out to actually get painted and then we can worry about actually routing this
quite nicely so for example we're probably gonna want to rotate all these
fittings up and down, we're gonna want to actually make use of hose clamps,
mounted to the body to make sure the hoses stay where they're supposed to be.
If we do it right, we're gonna have a real life power loader. I mean looking at the doll
I don't know about you Bogdan but I think we're pretty accurate right now.
Few just not even plugged in, it's great.
Alright this is freaking awesome we have the upper body to our very own Aliens
power loader mech! The next step for our power loader build is to take it all
apart again and send it out to be professionally painted a nice
caterpillar yellow. After that we're gonna be trying to get a caterpillar
skid steer with a tank tread base to complete this mech. So, make sure you
subscribe notifications turned on. This is just the beginning of our awesome
project and you don't want to miss it!