Subject:
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Re: Video of Cable Shovel In Action
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Newsgroups:
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lugnet.technic
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Date:
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Sat, 1 Oct 2005 12:42:24 GMT
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Viewed:
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8478 times
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On 30/09/05, Benjamin Ventura <generaldisarray2005@yahoo.com> wrote:
> In lugnet.technic, danny staple <orionrobots@gmail.com> wrote:
> > >
> > > Most of the noise is coming from the 'crowd', the part that pushes the
> > > bucket
> > > back and forth. It uses a bunch of 40, 24 and 8 tooth gears to do it's
> > > thing:
> > >
> > > <http://www.brickshelf.com/cgi-bin/gallery.cgi?i=1401966>
> > >
> > > And they make a ton of noise, the gears. The motors there do not have
> > > built-in
> > > gear reduction, so i had to build my own transmission.
> >
> > Cool. Could you get less noise and a reduction in space using a worm
> > gear? I seem to remember them being less efficient, but they would
> > give good reduction, and should lower the noise considerably, although
> > they may require placing motors perpendicular to the output shafts.
> >
> > Danny
> > --
> > http://orionrobots.co.uk - Build Robots
>
> I probably could reduce bulk and noise by using worm gears, but at the time I
> built that part of the machine I only owned two worms and I needed them in
> other
> places. The 'crowd' has two motors and transmissions and I had already used
> one
> worm gear in the bucket's jaw..
>
> However, I really like the noise. The machine is big, and the transmission
> chattering helps give it an even "larger than life" feel. The hoist is even
> better, it has four high-speed motors and transmissions inside of the house
> (the
> red and white body part). Having all those motors and gears inside of a big
> hollow space makes a really cool, deep noise that echos around inside and
> sounds
> great. But you can't hear that sound in the video, the upgraded hoist is new
> and was in a different configuration at the time of the video's filming.
>
> On a different subject I have been starting a new project, a drilling rig. I
> want to make something like this:
>
> <<http://www.bucyrus.com/drills-49.jpg>>
>
> or an offshore oil drilling platform.
>
> I really enjoy building models that are functional, so I want to make one that
> can actually put holes in the ground and lay pipe. I have built a prototype
> drilling attachment that I think will work, I will post pictures ASAP.
>
> -Ben
Ah - understandable. I actually stocked up on them from bricklink, as
I so often found them useful. I admit - I tend to agree with you on
the noise making it "larger than life". Any chance of videos of the
upgraded hoist then?
One other thing - how are you controlling it? I see the huge battery
and counterweights, but what have you got at the other end of that
bundle of control cables?
I am looking forward to the drilling rig - laying pipe as well means
you might even build a small functional Lego TBM - cool.
Danny
--
http://orionrobots.co.uk - Build Robots
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Message has 1 Reply:
 | | Re: Video of Cable Shovel In Action
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| (...) Re: control, I am using switches and a project box that I purchased at radioshack. Unfortunately this does not allow for proportional control of machine functions, it is bang-bang. You can see the tethered remote in the first two pictures in (...) (21 years ago, 3-Oct-05, to lugnet.technic, FTX)
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Message is in Reply To:
| | Re: Video of Cable Shovel In Action
|
| (...) I probably could reduce bulk and noise by using worm gears, but at the time I built that part of the machine I only owned two worms and I needed them in other places. The 'crowd' has two motors and transmissions and I had already used one worm (...) (21 years ago, 30-Sep-05, to lugnet.technic, FTX)
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