Author Topic: new Big Dog videos - impressive!  (Read 4027 times)

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Offline AdminTopic starter

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new Big Dog videos - impressive!
« on: March 19, 2008, 12:13:18 PM »
Boston Dynamics has released new video of their 4 legged Big Dog.

The balancing capabilities are amazing!

[youtube]mmVaLp8icoU[/youtube]

Offline airman00

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Re: new Big Dog videos - impressive!
« Reply #1 on: March 19, 2008, 01:10:30 PM »
that is amazing

How are they making the legs move? Muscle wire, servos, what is it?
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Offline hgordon

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Re: new Big Dog videos - impressive!
« Reply #2 on: March 19, 2008, 01:16:18 PM »
Not exactly "stealth", but still very impressive.  It will be nice when they can get rid of that weed-wacker engine.
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Offline IceMetal

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Re: new Big Dog videos - impressive!
« Reply #3 on: March 19, 2008, 01:26:39 PM »
I'm pretty impressed with the run and the jumping, I wonder if it can climb stairs,

Offline JonHylands

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Re: new Big Dog videos - impressive!
« Reply #4 on: March 19, 2008, 02:08:54 PM »
The legs are hydraulic, thus the need for the "weed-whacker" engine...

I would think, given the load-carrying capacity of that thing, that they could give up 50 lbs to some high-end lithium batteries, and run a big brushless motor to drive the hydraulic pump...

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Offline TrickyNekro

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Re: new Big Dog videos - impressive!
« Reply #5 on: March 19, 2008, 03:38:30 PM »
Yep, it's noisy!!!
It's kinda wonder why they would use such an old technology ( inner combustion engine ) for such a high-tech thing!!!
It must be the refuel time which pays the sacrifice!!! Since batteries still need to be recharged, but with an engine you can provide power too!!!
It's still amazing although!!! Actually walking like a dog, or a human on four!!! ( I hope this is not swearing I don't know)
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Offline ed1380

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Re: new Big Dog videos - impressive!
« Reply #6 on: March 19, 2008, 03:55:19 PM »
i dont remember it being so noisy in the old vids.
still walks funny
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Offline TrickyNekro

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Re: new Big Dog videos - impressive!
« Reply #7 on: March 19, 2008, 04:17:09 PM »
i dont remember it being so noisy in the old vids.
still walks funny

But I do... It the gas engine which makes a terrible sound....
But anyways... Amazing...
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Offline superchiku

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Re: new Big Dog videos - impressive!
« Reply #8 on: March 20, 2008, 12:28:59 AM »
cool design work done with the chasisand movement mechanism
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Offline JonHylands

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Re: new Big Dog videos - impressive!
« Reply #9 on: March 20, 2008, 08:01:02 AM »
It's kinda wonder why they would use such an old technology ( inner combustion engine ) for such a high-tech thing!!!

Well, the reason they do this is because there are no batteries on earth that can provide anywhere close to the energy density of gasoline...

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Offline Ro-Bot-X

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Re: new Big Dog videos - impressive!
« Reply #10 on: March 20, 2008, 10:46:54 AM »
Actually, there is wather. There are pure water motors in the works as an alternative to gasoline. Until they are ready for production, there is the Brown Gas Cell (splits H2O {liquid} in HHO {gas}) that increases the mileage on a regular motor up to 100%.
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Offline ed1380

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Re: new Big Dog videos - impressive!
« Reply #11 on: March 20, 2008, 03:25:08 PM »
yeah whatever :p
diesel pwnorz all
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Offline TrickyNekro

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Re: new Big Dog videos - impressive!
« Reply #12 on: March 21, 2008, 04:47:10 AM »
Actually, there is water. There are pure water motors in the works as an alternative to gasoline. Until they are ready for production, there is the Brown Gas Cell (splits H2O {liquid} in HHO {gas}) that increases the mileage on a regular motor up to 100%.

And the engines can provide the same torque at the same RPM??? If yes then Hybrid cars are just a commercial Logo and not the most environmentally friendly.....
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Offline JonHylands

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Re: new Big Dog videos - impressive!
« Reply #13 on: March 21, 2008, 06:13:30 AM »
And if you believe there are water engines coming right around the corner, I've got a perpetual motion machine here I'd like to sell to you...

- Jon

 


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