(electronic music)

Hey what's up everyone, we're Erik and Justin,

the minds behind Battle Damage.

And we got a lot of questions about the cart

and we're here to answer those.

The one you see on the show is probably

the third or fourth version.

The first one died the quickest

and also took the longest to build.

I modeled some custom parts and then 3D printed them

and they all looked really cool.

You even have like the names written on each section.

When we did the first test, everything shattered

of the bottom, it just slid off.

(crashing)

Oh.

I underestimated how strong all the bottom pieces

needed to be to keep the cart on the track.

I took a moment to

Cry.

Not cry, I was crying on the inside a lot.

Hmmm.

Ran to you know Big Bot hardware store.

Threw out everything, all the bottom of it.

This whole new much stronger, all steel,

these are just like elbow brackets

and now the motor is spring loaded

so it should have tension, but not break the motor mounts

like it did before.

These motors, each one is meant to power

like a giant RC plane.

Like a military drone-esque.

Yeah, pretty much.

The original goal was for the cart to spin

around 30 miles per hour, which

[Justin] Is terrifying.

And when you watch it spinning at 15, that's pretty scary.

So to imagine it going twice as fast as that.

What you see on the show is probably those motors

in that power plant working at like 20 percent,

so they could go a lot faster.

Now it's not like we're putting a GoPro in there.

(laughter)

No.

$50,000 super scientific specialty phantom camera

that of course we rented.

Of course that we rented.

We knew from the beginning that we had to armor this thing.

(crash)

Damn.

(laughs)

Look at his face.

Skeleton of the armor is heavy duty L brackets.

On top of that is three eighths inch plexiglass.

When you're filming at those high speeds,

it can only capture four seconds

and if you're off by two seconds, the shot's ruined.

Which happened.

It was too late.

Aw.

This camera's like so ridiculous,

it doesn't even have buttons on it.

You have to connect a laptop

and that's the only way to hit record.

Finally we realized we could wirelessly connect

the camera to the laptop.

Went from strapping a $700 five pound laptop

with its ass hanging out of this cart,

to a $100 quarter pound little piece of electronics

that's wirelessly transmitting.

This has never been done before,

so we just guessed that it would work.

Well guys thanks for checking this out.

Thank you.

Thanks for being fans of Battle Damage,

we really appreciate the support you guys have given us

and there have been so many amazing suggestions.

We want to battle test the things

that you wanna see battle tested,

so leave them in the comments below here on the videos.

Tweet us and Facebook us and all those things, bloolooloop.

We'll see you next time.

Thanks for watching.

[Erik] In a lab coat.

[Justin] Ooh yeah, we need better lab coats.

(hip hop music)