Subject:
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Re: Motorized pneumatics
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Newsgroups:
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lugnet.technic
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Date:
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Sat, 14 Aug 2010 21:46:00 GMT
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Viewed:
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51238 times
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In lugnet.technic, Nathan Bell wrote:
> I haven't posted in this forum since 2008 and haven't built much, but upon
> looking at the new 8043 Excavator set at Toy's R'Us, it became apparent that
> although the new linear actuators dramatically simplify the process, they are
> not the only solution. I call them linear actuators because they are typically
> motorized and they extend/retract. It is possible to do the same with
> pneumatics....if you add a differential into the system. By doing this simply
> forwarding or reversing the motor will extend/retract the pistons.
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=440654
>
> This is not the ideal execution of the idea and there have undoubtedly been
> others who found a different way to do this same thing, but it shows the general
> idea. One could obviously incorporate a bigger motor, a different gear ratio,
> or even shrink the size of the assembly.
>
> Hopefully this idea will help those of you who still want to use pneumatics do
> so. Sorry the youtube video is fuzzy.
>
> -Nathan Bell
Hi Nathan,
Don't you love differentials? Smart gearboxes..... I invented the same
pneumatic switch/compressor solution years ago, and its great! As you pointed
out, how fast the switch flips all depends on how hard it is to pump the pump.
Using the larger pumps decreases the time needed to flip the switch, but they
are not as efficient (overall) as using the small pumps.
Life is full of trade offs!
Kevin
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Message has 1 Reply:
 | | Re: Motorized pneumatics
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| (...) I guess great minds think alike! Yeah it works well so far. Right now I'm building my own version of the new excavator with that same system. The thing to remember is to make sure the axles going to the switch can turn freely. I'll post some (...) (14 years ago, 14-Aug-10, to lugnet.technic)
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Message is in Reply To:
| | Motorized pneumatics
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| I haven't posted in this forum since 2008 and haven't built much, but upon looking at the new 8043 Excavator set at Toy's R'Us, it became apparent that although the new linear actuators dramatically simplify the process, they are not the only (...) (14 years ago, 10-Aug-10, to lugnet.technic)
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