He'd be a lot quicker getting things started if he had installed some hydraulics to bounce those wheels up and down a few times.

I don't imagine this being filmed & laughed at with someone in there. Maybe there was booze in the hydraulics

>> ^jqpublick:

I think it's more likely that this system extends the drive time of whatever battery cells he has installed in the thing. It's not that he's getting free energy, it's just that at 40 the system is going fast enough that even though there's a net loss, the additional energy stored in the batteries gives a longer running time. I think that's just about all that there is here.
>> ^rkone:
>> ^Drachen_Jager:
That is the dumbest thing I've ever seen.

Agreed. I'd downvote the video if I could. People, if you're in doubt, think of it this way - if the fan could generate more power than the loss of pushing it, then you could just keep adding more fans until it becomes a perpetual motion machine..



Problem, nothing happens at 40 miles an hour in physics for a decrease wind resistance and drag. If anything, the faster you go, the more of a problem wind becomes. There is no possible way that this is extending his drive time. This is exactly equal to holding your hand out the window. If you could turn that blockage into electricity, it will always be less energy than the amount of momentum it sapped via drag. Or else ALL CARS WOULD ALREADY DO THIS! The reason you don't is because it doesn't work.

A simple instance where something like this IS used is the emergency ram air turbine for jumbo jets. When there is a complete loss of power, a ram air turbine drops down to generate emergency power for the hydraulic systems. This increases drag, but it is so small that it isn't a problem. But it is also why air planes don't have windmills on them, anything you use to block the wind is slowing you down more than any recoverable amount of energy via electric conservation of kinetic energy. This is physics 101, entropy, it's a bitch!

Now, if he compressed the incoming air, added a combustion chamber with kerosene or gasoline, then he would have himself a turbine engine for his car, but now, he just has a lesson in why physics is hard.

>> ^spoco2:

Yeah 'DIY'
If you can weld
And can smoothly cut holes in metal
And have a surplus 1500rpm motor lying around
And a hydraulic plug and cap that you have centre drilled, and tapped of course
And you have a bench drill
Oh, and a butane torch
Basically... if you have a complete toolshop and good mechanical skills and spend $45 then sure, you could build this... (And hope that your welding etc. remains intact at 1500rpm) or you could just spend $45 and buy one.
except your plastic chinese-made thing will fall apart after 3 uses, while that contraption will still be making cotton candy for a post-nuclear apocalypse society.

Yeah 'DIY'

If you can weld

And can smoothly cut holes in metal

And have a surplus 1500rpm motor lying around

And a hydraulic plug and cap that you have centre drilled, and tapped of course

And you have a bench drill

Oh, and a butane torch

Basically... if you have a complete toolshop and good mechanical skills and spend $45 then sure, you could build this... (And hope that your welding etc. remains intact at 1500rpm) or you could just spend $45 and buy one.

>> ^AeroMechanical:

I think I'd rather have one of those walking lumber machine things:
http://www.youtube.com/watch?v=CD2V8GFqk_Y&feature=player_detailpa
ge
Even if it is really slow... it's got a chainsaw on a big hydraulic arm. Probably whup this thing in a mech battle.


Bagger 288 eats those things for breakfast! By the handful!

I think I'd rather have one of those walking lumber machine things:

http://www.youtube.com/watch?v=CD2V8GFqk_Y&feature=player_detailpage

Even if it is really slow... it's got a chainsaw on a big hydraulic arm. Probably whup this thing in a mech battle.

hydraulic fluid

Hydraulics package? Whatever it is s'cool as fuck!

This is what I mean, side to side movement can be countered by overcorrecting the tilt. This would explain why the table's apparent movement is so large. >> ^messenger:

If it were above the ship's roll centre, then it would have a lot of side-to-side movement to compensate for which is hard when your range of motion is mostly up and down. It would be easier towards the outside of the ship where there's a lot less side-to-side movement, and more up-and-down, which would merely increase or lessen the gravity on the balls, which is no big deal in a casual game.>> ^Spacedog79:
A mechanical gyro causing the movement would have delay and the balls would roll slightly. Assuming the table is above the ship's roll centre, the table would have to over correct for the ship's movement in order to keep the balls exactly in place. Most likely electronic gyros and good hydraulics with no stiction and powerful enough to not be affected by players putting pressure on the table.

If it were above the ship's roll centre, then it would have a lot of side-to-side movement to compensate for which is hard when your range of motion is mostly up and down. It would be easier towards the outside of the ship where there's a lot less side-to-side movement, and more up-and-down, which would merely increase or lessen the gravity on the balls, which is no big deal in a casual game.>> ^Spacedog79:

A mechanical gyro causing the movement would have delay and the balls would roll slightly. Assuming the table is above the ship's roll centre, the table would have to over correct for the ship's movement in order to keep the balls exactly in place. Most likely electronic gyros and good hydraulics with no stiction and powerful enough to not be affected by players putting pressure on the table.

A mechanical gyro causing the movement would have delay and the balls would roll slightly. Assuming the table is above the ship's roll centre, the table would have to over correct for the ship's movement in order to keep the balls exactly in place. Most likely electronic gyros and good hydraulics with no stiction and powerful enough to not be affected by players putting pressure on the table.

>> ^jmd:

>> ^longde:
Not really. Not saying it wouldn't be expensive, but the technology to do this has been around for a while: a few accelerometers, a gyroscope, and lots of actuators. And someone who knows a little control system programming.
Still pretty cool though.>> ^Spacedog79:
To work that precisely must take some serious engineering. I bet they're really expensive!


Actually, and judging by the title it is what it uses, but this can pretty much be done with a pivoting table and a large spinning gyro placed in the table. Much like a top, the spinning gyro would resist movement. There is probably something else that auto corrects the tilt for any time it is off (a gyro resist forces that try and tilt it, but if it finds a new tilt degree forcefully, it will keep it). It is really hard to tell from just seeing this video. Also if you went with the actuator route, something as simple as the actuators and an ipod alone could be used.
the most expensive part would probably still be the pool table, and the act of building the pool table mounted to the auto level device.

So that's what they mean by hydraulic lunch...

>> ^Jinx:

>> ^bunidblanc:
Woah!! Looks like a Gundam warrior or something

I was just thinking how it had never occurred to me before that Insects were miniture Robots.


Insects run on hydraulics. Kinda.

Awwww c'mon! you telling me that Obama's ride doesn't have hydraulics?
..somebody just lost his presidential street cred.